persistentstorage/sql/SRC/Server/SqlSrvStatementUtil.cpp
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Wed, 18 Aug 2010 11:30:17 +0300
changeset 41 3256212fc81f
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child 51 7d4490026038
permissions -rw-r--r--
Revision: 201033 Kit: 201033
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// Copyright (c) 2006-2010 Nokia Corporation and/or its subsidiary(-ies).
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// All rights reserved.
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// This component and the accompanying materials are made available
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// under the terms of "Eclipse Public License v1.0"
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// which accompanies this distribution, and is available
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// at the URL "http://www.eclipse.org/legal/epl-v10.html".
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//
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// Initial Contributors:
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// Nokia Corporation - initial contribution.
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//
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// Contributors:
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//
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// Description:
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//
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#include <e32debug.h>
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#include <hal.h>
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#include <sqldb.h>
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#include "sqlite3.h"
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#include "SqlSrvStatementUtil.h"
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#include "SqlAssert.h"
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#include "SqlSrvUtil.h"
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#include "SqlUtil.h"
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#include "SqliteSymbian.h"		//sqlite3SymbianLastOsError()
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#include "OstTraceDefinitions.h"
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#include "SqlSrvResourceProfiler.h"
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#ifdef OST_TRACE_COMPILER_IN_USE
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#include "SqlSrvStatementUtilTraces.h"
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#endif
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#include "SqlTraceDef.h"
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//The database names in all statements are quoted to avoid the "sql injection" threat.
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_LIT8(KPageCountPragma, "PRAGMA \"%S\".page_count\x0");
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_LIT8(KPageSizePragma,  "PRAGMA \"%S\".page_size\x0");
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_LIT8(KCacheSizePragma,  "PRAGMA \"%S\".cache_size\x0");
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_LIT8(KEncodingPragma,  "PRAGMA \"%S\".encoding\x0");
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_LIT8(KFreePageCountPragma, "PRAGMA \"%S\".freelist_count\x0");
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_LIT8(KVacuumModePragma, "PRAGMA \"%S\".auto_vacuum\x0");
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_LIT8(KIncrementalVacuumPragma, "PRAGMA \"%S\".incremental_vacuum(%d)\x0");
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///////////////////////////////////////////////////////////////////////////////////////////////////////////////
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//Calls sqlite3_open16() to create or open database file with aFileNameZ.
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//aFileNameZ is UTF16 encoded, zero-terminated.
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//The function returns system-wide errors or database specific errors.
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//The function may panic with code 7 in _DEBUG mode - internal error: the created database handle is NULL.
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TInt CreateDbHandle16(const TDesC& aFileNameZ, sqlite3*& aDbHandle)
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	{
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	(void)sqlite3SymbianLastOsError();//clear last OS error
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	TInt err = sqlite3_open16(aFileNameZ.Ptr(), &aDbHandle);
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	__ASSERT_DEBUG(err == SQLITE_OK ? aDbHandle != NULL : ETrue, __SQLPANIC2(ESqlPanicInternalError));
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	if(err == SQLITE_OK)
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		{
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		(void)sqlite3_extended_result_codes(aDbHandle, 0);
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		}
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	//Get the return error code now, because the next "if" may destroy it.
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	TInt rc = ::Sql2OsErrCode(err, sqlite3SymbianLastOsError());
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	if(err != SQLITE_OK)
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		{//Yes, it is possible error code != SQLITE_OK and aDbHandle != NULL.
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		CloseDbHandle(aDbHandle);
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		aDbHandle = NULL;
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		}
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	return rc;
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	}
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//Calls sqlite3_open() to create or open database file with aFileNameZ.
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//aFileNameZ is UTF8 encoded, zero-terminated.
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//The function returns system-wide errors or database specific errors.
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//The function may panic with code 7 in _DEBUG mode - internal error: the created database handle is NULL.
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TInt CreateDbHandle8(const TDesC8& aFileNameZ, sqlite3*& aDbHandle)
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	{
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	(void)sqlite3SymbianLastOsError();//clear last OS error
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	TInt err = sqlite3_open((const char *) aFileNameZ.Ptr(), &aDbHandle);
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	__ASSERT_DEBUG(err == SQLITE_OK ? aDbHandle != NULL : ETrue, __SQLPANIC2(ESqlPanicInternalError));
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	if(err == SQLITE_OK)
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		{
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		(void)sqlite3_extended_result_codes(aDbHandle, 0);
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		}
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	//Get the return error code now, because the next "if" may destroy it.
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	TInt rc = ::Sql2OsErrCode(err, sqlite3SymbianLastOsError());
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	if(err != SQLITE_OK)
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		{//Yes, it is possible error code != SQLITE_OK and aDbHandle != NULL.
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		CloseDbHandle(aDbHandle);
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		aDbHandle = NULL;
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		}
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	return rc;
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	}
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///////////////////////////////////////////////////////////////////////////////////////////////////////////////
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/////                     16-bit and 8-bit SQL statements execution upon completion                        ////
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///////////////////////////////////////////////////////////////////////////////////////////////////////////////
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//16-bit SQL statement execution.
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//
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//aSql - zero-terminated string
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//
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//Prepares the supplied as an argument (aSql) 16-bit SQL statement and executes it.
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//If aSql argument contains more than one SQL statements, separated with ';', then
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//the function panics in _DEBUG mode (panic code 7).
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//
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//The function panics in debug mode (panic code 2) if aDbHandle is NULL.
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//
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//If the function completes successfully, it returns SQLITE_ROW or SQLITE_DONE.
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//If the function fails then it returns one of the SQLITE error codes.
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static TInt DoSingleStmtExec16(sqlite3 *aDbHandle, const TDesC16& aSql)
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	{
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    __ASSERT_DEBUG(aDbHandle != NULL, __SQLPANIC2(ESqlPanicInvalidObj));
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    __ASSERT_DEBUG(aSql.Length() > 0 ? (TInt)aSql[aSql.Length() - 1] == 0 : ETrue, __SQLPANIC2(ESqlPanicBadArgument));
0
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	sqlite3_stmt* stmtHandle = NULL;
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	const void* stmtTail = NULL;
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    //sqlite3_prepare16_v2() expects parameter #3 to be one of the following:
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    // - byte length of the sql statement (parameter #2), excluding terminating zero;
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    // - negative value - the sql statement (parameter #2) is zero-terminated;
0
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	TInt err = sqlite3_prepare16_v2(aDbHandle, aSql.Ptr(), aSql.Length() * sizeof(TUint16) - sizeof(TUint16), &stmtHandle, &stmtTail);
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	__ASSERT_DEBUG(err == SQLITE_OK ? !stmtTail || User::StringLength((const TUint16*)stmtTail) == 0 : !stmtHandle, __SQLPANIC2(ESqlPanicInternalError));
0
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	if(stmtHandle)	//stmtHandle can be NULL for statements like this: ";".
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		{
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		if(err == SQLITE_OK)
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			{
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			while((err = sqlite3_step(stmtHandle)) == SQLITE_ROW)
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				{
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				}
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			if(err == SQLITE_ERROR)	//It may be "out of memory" problem
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				{
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				err = sqlite3_reset(stmtHandle);
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				__ASSERT_DEBUG(err != SQLITE_OK, __SQLPANIC2(ESqlPanicInternalError));
0
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				}
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			}
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		(void)sqlite3_finalize(stmtHandle);//sqlite3_finalize() fails only if an invalid statement handle is passed.
0
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		}
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	return err;
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	}
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/**
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This function searches aString argument for ';' occurences.
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Every time when it finds a ';' character, the function places a zero character right after the ';' and
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tests the just created, zero-terminated substring if it is a comlpete SQL statement.
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If it is a SQL statement, the function replaces the found ';' character with zero and returns the just created
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zero-terminated substring.Also the function modifies aString argument to point right after the found
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SQL string. If it is not SQL statement, the function will continue the searching.
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If there is no ';' inside aString argument, the function returns the same string as a return result and
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modifies aString argument - sets it to TPtr(NULL, 0, 0).
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The function expects aString argument to be zero-terminated.
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@internalComponent
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*/
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TPtrC GetFirstSqlStmt(TPtr& aString)
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	{
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	const TChar KDelimitier(';');
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	TPtr originalStr(aString);
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	TPtr str(const_cast <TUint16*> (aString.Ptr()), aString.Length(), aString.Length());
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	TInt afterDelimitierPos = 0;
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	TInt pos;
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	while((pos = str.Locate(KDelimitier) + 1) > 0 && pos < str.Length())
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		{
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		//There is a possibility that the string, which terminates with the found ';' character, is a SQL statement.
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		//Zero terminate the string placing a zero right after the ';' character and test it using sqlite3_complete16().
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		//If it is not a SQL string, restore the original character and continue searching.
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		afterDelimitierPos += pos;
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		TChar ch = aString[afterDelimitierPos];
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		aString[afterDelimitierPos] = 0;
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		TInt res = sqlite3_complete16(aString.Ptr());
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		aString[afterDelimitierPos] = ch;
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		if(res)
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			{
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			str.Set(const_cast <TUint16*> (aString.Ptr()), afterDelimitierPos, afterDelimitierPos);	
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			//Replace the found ';' character with 0.
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			str[afterDelimitierPos - 1] = 0;
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			aString.Set(const_cast <TUint16*> (aString.Ptr()) + afterDelimitierPos, aString.Length() - afterDelimitierPos, aString.Length() - afterDelimitierPos);
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			return str;
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			}
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		str.Set(const_cast <TUint16*> (str.Ptr()) + pos, str.Length() - pos, str.Length() - pos);	
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		}
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	//aString argument does not contain valid SQL statement or there is no ';' character inside aString.
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	//Set aString to TPtr(NULL, 0, 0) and return the original string.
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	aString.Set(NULL, 0, 0);
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	str.Set(originalStr);
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	return str;
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	}
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/**
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Executes one or more 16-bit SQL statements. SQL statements of any kind can be executed, but the 
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method won't return any record(s) if the SQL statement type is "SELECT".
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If the SQL statement(s) contains one or more parameters, the method will execute it giving the parameters
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default NULL values.
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@param aDbHandle Database handle. Not NULL.
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@param aSqlStmt String containing one or more 16-bit SQL statements, separated with ';'. Zero-terminated string.
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				Note: The ExecL() call can modify the content of aSqlStmt argument.
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@return KErrNone, Operation completed successfully;
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		KErrNoMemory, Out of memory;
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		KSqlErrGeneral, Syntax error. A text message describing the problem can be obtained calling
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						RSqlDatabase::LastErrorMessage();
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						Other system-wide error codes or SQL errors of ESqlDbError type.
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@panic SqlDb 4 In _DEBUG mode if aSqlStmt is not zero-terminated string
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@panic SqlDb 7 In _DEBUG mode if aDbHandle is NULL
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@internalComponent
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*/
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TInt DbExecStmt16(sqlite3* aDbHandle, TDes16& aSqlStmt)
0
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	{
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    __SQLTRACE_INTERNALSEXPR(TPtrC sqlprnptr(aSqlStmt.Left(aSqlStmt.Length() - 1)));
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    SQL_TRACE_INTERNALS(OstTraceExt2(TRACE_INTERNALS, DBEXECSTMT16_ENTRY, "Entry;0x%X;DbExecStmt16;sql=%S", (TUint)aDbHandle, __SQLPRNSTR(sqlprnptr)));
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	__ASSERT_DEBUG(aDbHandle != NULL, __SQLPANIC2(ESqlPanicInternalError));
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	__ASSERT_DEBUG(aSqlStmt.Length() > 0 ? (TInt)aSqlStmt[aSqlStmt.Length() - 1] == 0: ETrue, __SQLPANIC2(ESqlPanicBadArgument));
0
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	(void)sqlite3SymbianLastOsError();//clear last OS error
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	TInt err = SQLITE_DONE;
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	//Execute SQL statement(s)
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	//16-bit SQL string - no sqlite3_exec16() function, so the execution is made with 
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	//sqlite3_prepare16_v2() and sqlite3_step() functions.
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	TPtr16 sql(const_cast <TUint16*> (aSqlStmt.Ptr()), aSqlStmt.Length(), aSqlStmt.Length());
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	TPtrC firstSqlStmt(KNullDesC);
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	while(err == SQLITE_DONE && sql.Length() > 1) //"> 1" because it is a zero terminated string
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		{
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		firstSqlStmt.Set(GetFirstSqlStmt(sql));
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        SQLPROFILER_SQL16_PRINT((TUint)aDbHandle, firstSqlStmt.Left(firstSqlStmt.Length() - 1), EFalse);
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		err = ::DoSingleStmtExec16(aDbHandle, firstSqlStmt);
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		}
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	err = ::Sql2OsErrCode(err, sqlite3SymbianLastOsError());
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	if(err == KSqlAtEnd)
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		{
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		err = KErrNone;	
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		}
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	SQL_TRACE_INTERNALS(OstTraceExt2(TRACE_INTERNALS, DBEXECSTMT16_EXIT, "Exit;0x%X;DbExecStmt16;err=%d", (TUint)aDbHandle, err));
0
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	return err;
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	}
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/**
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Executes one or more 8-bit SQL statements. SQL statements of any kind can be executed, but the 
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method won't return any record(s) if the SQL statement type is "SELECT".
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If the SQL statement(s) contains one or more parameters, the method will execute it giving the parameters
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default NULL values.
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@param aDbHandle Database handle. Not NULL.
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@param aSqlStmt String containing one or more 8-bit SQL statements, separated with ';'. Zero-terminated string.
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@return KErrNone, Operation completed successfully;
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		KErrNoMemory, Out of memory;
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		KSqlErrGeneral, Syntax error. A text message describing the problem can be obtained calling
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						RSqlDatabase::LastErrorMessage();
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		Other system-wide error codes or SQL errors of ESqlDbError type.
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@panic SqlDb 4 In _DEBUG mode if aSqlStmt is not zero-terminated string
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@panic SqlDb 7 In _DEBUG mode if aDbHandle is NULL
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@internalComponent
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*/
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TInt DbExecStmt8(sqlite3* aDbHandle, const TDesC8& aSqlStmt)
0
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	{
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    __SQLTRACE_INTERNALSEXPR(TPtrC8 sqlprnptr(aSqlStmt.Left(aSqlStmt.Length() - 1)));
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	__SQLTRACE_INTERNALSVAR(TBuf<100> des16prnbuf);
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    SQL_TRACE_INTERNALS(OstTraceExt2(TRACE_INTERNALS, DBEXECSTMT8_ENTRY, "Entry;0x%X;DbExecStmt8;sql=%s", (TUint)aDbHandle, __SQLPRNSTR8(sqlprnptr, des16prnbuf)));
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	__ASSERT_DEBUG(aDbHandle != NULL, __SQLPANIC2(ESqlPanicInternalError));
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	__ASSERT_DEBUG(aSqlStmt.Length() > 0 ? (TInt)aSqlStmt[aSqlStmt.Length() - 1] == 0: ETrue, __SQLPANIC2(ESqlPanicBadArgument));
0
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    SQLPROFILER_SQL8_PRINT((TUint)aDbHandle, aSqlStmt.Left(aSqlStmt.Length() - 1), EFalse);
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	(void)sqlite3SymbianLastOsError();//clear last OS error
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	TInt err = sqlite3_exec(aDbHandle, reinterpret_cast <const char*> (aSqlStmt.Ptr()), NULL, NULL, NULL);
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	err = ::Sql2OsErrCode(err, sqlite3SymbianLastOsError());
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	if(err == KSqlAtEnd)
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		{
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		err = KErrNone;	
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		}
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	SQL_TRACE_INTERNALS(OstTraceExt2(TRACE_INTERNALS, DBEXECSTMT8_EXIT, "Exit;0x%X;DbExecStmt8;err=%d", (TUint)aDbHandle, err));
0
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	return err;
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	}
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///////////////////////////////////////////////////////////////////////////////////////////////////////////////
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/////                     16-bit and 8-bit SQL statement preparation                                      /////
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///////////////////////////////////////////////////////////////////////////////////////////////////////////////
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//Prepares 16-bit SQL statement, returning in aStmtHandle the statement handle and
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//setting aHasTail to true, if aStmt contains more than one sql statements.
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//aStmt - zero-terminated string.
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//Returns one of SQLITE error codes.
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static TInt DoPrepareStmt16(sqlite3* aDbHandle, const TDesC& aStmt, sqlite3_stmt** aStmtHandle, TBool& aHasTail)
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	{
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	const void* stmtTail = NULL;
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    //sqlite3_prepare16_v2() expects parameter #3 to be one of the following:
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    // - byte length of the sql statement (parameter #2), excluding terminating zero;
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    // - negative value - the sql statement (parameter #2) is zero-terminated;
0
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	TInt err = sqlite3_prepare16_v2(aDbHandle, aStmt.Ptr(), aStmt.Length() * sizeof(TUint16) - sizeof(TUint16), aStmtHandle, &stmtTail);
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	aHasTail = stmtTail && static_cast <const TUint16*> (stmtTail)[0] != 0;
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	__ASSERT_DEBUG(err != SQLITE_OK ? !(*aStmtHandle) : ETrue, __SQLPANIC2(ESqlPanicInternalError));
0
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	//(*aStmtHandle) is NULL for ";" statements, when err == SQLITE_OK. Since the server should not panic
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	//that situation is handled later (not inside the assert above)
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	return err;
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	}
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//Prepares 8-bit SQL statement, returning in aStmtHandle the statement handle and
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//setting aHasTail to true, if aStmt contains more than one sql statements.
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//aStmt - zero-terminated string.
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//Returns one of SQLITE error codes.
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static TInt DoPrepareStmt8(sqlite3* aDbHandle, const TUint8* aStmt, sqlite3_stmt** aStmtHandle, TBool& aHasTail)
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	{
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	const char* stmtTail = NULL;
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    //sqlite3_prepare_v2() expects parameter #3 to be one of the following:
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    // - byte length of the sql statement (parameter #2), excluding terminating zero;
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diff changeset
   312
    // - negative value - the sql statement (parameter #2) is zero-terminated;
0
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diff changeset
   313
	TInt err = sqlite3_prepare_v2(aDbHandle, reinterpret_cast <const char*> (aStmt), -1, aStmtHandle, &stmtTail);
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diff changeset
   314
	aHasTail = stmtTail && stmtTail[0] != 0;
41
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parents: 22
diff changeset
   315
	__ASSERT_DEBUG(err != SQLITE_OK ? !(*aStmtHandle) : ETrue, __SQLPANIC2(ESqlPanicInternalError));
0
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parents:
diff changeset
   316
	//(*aStmtHandle) is NULL for ";" statements, when err == SQLITE_OK. Since the server should not panic
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diff changeset
   317
	//that situation is handled later (not inside the assert above)
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diff changeset
   318
	return err;
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   319
	}
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parents:
diff changeset
   320
17
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parents: 0
diff changeset
   321
//This function accepts as arguments the SQLITE error code, 
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parents: 0
diff changeset
   322
//"aHasTail" boolean flag set to true if the SQL string contains more than one SQL statement 
0
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parents:
diff changeset
   323
//and the statement handle.
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diff changeset
   324
//
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parents:
diff changeset
   325
//It checks the arguments and returns an error if:
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parents:
diff changeset
   326
// - aSqliteError != SQLITE_OK;
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parents:
diff changeset
   327
// - aHasTail is true (possibly more than one SQL statement, separated with ";");
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parents:
diff changeset
   328
// - aStmtHandle is NULL;
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diff changeset
   329
//
22
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parents: 17
diff changeset
   330
static TInt ProcessPrepareError(TInt aSqliteError, TBool aHasTail, sqlite3_stmt*& aStmtHandle)
0
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parents:
diff changeset
   331
	{
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diff changeset
   332
	if(aSqliteError != SQLITE_OK)
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parents:
diff changeset
   333
		{
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diff changeset
   334
		return ::Sql2OsErrCode(aSqliteError, sqlite3SymbianLastOsError());
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diff changeset
   335
		}
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diff changeset
   336
	else if(aHasTail || !aStmtHandle)
22
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parents: 17
diff changeset
   337
		{//Case 1:
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parents: 17
diff changeset
   338
		 // More than one SQL statement or the SQL string is "" or ";;;" or ";   ;; ;". 
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parents: 17
diff changeset
   339
		 // Report it as an error, because there is no statement handle.
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parents: 17
diff changeset
   340
		 //Case 2:
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parents: 17
diff changeset
   341
		 // Non-null aHasTail. In this case the SQL string contains more than one SQL statement.
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parents: 17
diff changeset
   342
		 // The statement handle is not null. The statement has to be finialized before reporting the error.
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parents: 17
diff changeset
   343
		(void)FinalizeStmtHandle(aStmtHandle);
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parents: 17
diff changeset
   344
		aStmtHandle = NULL;
0
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diff changeset
   345
		return KErrArgument;
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parents:
diff changeset
   346
		}
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parents:
diff changeset
   347
	return KErrNone;
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parents:
diff changeset
   348
	}
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parents:
diff changeset
   349
17
55f2396f6d25 Revision: 201018
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parents: 0
diff changeset
   350
//This function accepts as arguments the SQLITE error code, 
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parents: 0
diff changeset
   351
//"aHasTail" boolean flag set to true if the SQL string contains more than one SQL statement 
0
08ec8eefde2f Revision: 201003
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parents:
diff changeset
   352
//and the statement handle.
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parents:
diff changeset
   353
//
08ec8eefde2f Revision: 201003
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parents:
diff changeset
   354
//It checks the arguments and leaves if:
08ec8eefde2f Revision: 201003
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parents:
diff changeset
   355
// - aSqliteError != SQLITE_OK;
08ec8eefde2f Revision: 201003
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parents:
diff changeset
   356
// - aHasTail is true (possibly more than one SQL statement, separated with ";");
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parents:
diff changeset
   357
// - aStmtHandle is NULL;
08ec8eefde2f Revision: 201003
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parents:
diff changeset
   358
//
08ec8eefde2f Revision: 201003
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parents:
diff changeset
   359
static void LeaveIfPrepareErrorL(TInt aSqliteError, TBool aHasTail, sqlite3_stmt* aStmtHandle)
08ec8eefde2f Revision: 201003
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parents:
diff changeset
   360
	{
41
3256212fc81f Revision: 201033
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parents: 22
diff changeset
   361
	__SQLLEAVE_IF_ERROR2(ProcessPrepareError(aSqliteError, aHasTail, aStmtHandle));
0
08ec8eefde2f Revision: 201003
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parents:
diff changeset
   362
	}
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   363
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   364
/**
08ec8eefde2f Revision: 201003
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parents:
diff changeset
   365
Prepares 16-bit aSqlStmt SQL statement.
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   366
08ec8eefde2f Revision: 201003
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parents:
diff changeset
   367
@param aSqlStmt - zero-terminated string.
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   368
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   369
@leave KErrNoMemory, if there is no memory;
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   370
	   KErrArgument, if the SQL string contains more than one SQL statements;
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   371
	   One of the error codes in [KSqlErrGeneral..KSqlErrNotDb] range.
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   372
08ec8eefde2f Revision: 201003
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parents:
diff changeset
   373
@return The prepared SQL statement handle.
08ec8eefde2f Revision: 201003
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parents:
diff changeset
   374
08ec8eefde2f Revision: 201003
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parents:
diff changeset
   375
@internalComponent
08ec8eefde2f Revision: 201003
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parents:
diff changeset
   376
*/
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   377
sqlite3_stmt* StmtPrepare16L(sqlite3* aDbHandle, const TDesC16& aSqlStmt)
08ec8eefde2f Revision: 201003
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parents:
diff changeset
   378
	{
41
3256212fc81f Revision: 201033
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parents: 22
diff changeset
   379
    __SQLTRACE_INTERNALSEXPR(TPtrC sqlprnptr(aSqlStmt.Left(aSqlStmt.Length() - 1)));
3256212fc81f Revision: 201033
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parents: 22
diff changeset
   380
    SQL_TRACE_INTERNALS(OstTraceExt2(TRACE_INTERNALS, STMTPREPARE16L_ENTRY, "Entry;0x%X;StmtPrepare16L;sql=%S", (TUint)aDbHandle, __SQLPRNSTR(sqlprnptr)));	
0
08ec8eefde2f Revision: 201003
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parents:
diff changeset
   381
	(void)sqlite3SymbianLastOsError();//clear last OS error
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   382
	TBool hasTail = EFalse;
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   383
	sqlite3_stmt* stmtHandle = NULL;
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   384
	TInt err = DoPrepareStmt16(aDbHandle, aSqlStmt, &stmtHandle, hasTail);
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   385
	LeaveIfPrepareErrorL(err, hasTail, stmtHandle);
41
3256212fc81f Revision: 201033
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 22
diff changeset
   386
	SQL_TRACE_INTERNALS(OstTraceExt2(TRACE_INTERNALS, STMTPREPARE16L_EXIT, "Exit;0x%X;StmtPrepare16L;stmtHandle=0x%X", (TUint)aDbHandle, (TUint)stmtHandle)); 
0
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   387
	return stmtHandle;
08ec8eefde2f Revision: 201003
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parents:
diff changeset
   388
	}
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   389
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   390
/**
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   391
Prepares 8-bit aSqlStmt SQL statement.
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   392
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   393
@param aSqlStmt - zero-terminated string.
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   394
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   395
@leave KErrNoMemory, if there is no memory;
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   396
	   KErrArgument, if the SQL string contains more than one SQL statements;
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   397
	   One of the error codes in [KSqlErrGeneral..KSqlErrNotDb] range.
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   398
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   399
@return The prepared SQL statement handle.
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   400
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   401
@internalComponent
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   402
*/
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   403
TInt StmtPrepare8(sqlite3* aDbHandle, const TDesC8& aSqlStmt, sqlite3_stmt*& aStmtHandle)
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   404
	{
41
3256212fc81f Revision: 201033
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 22
diff changeset
   405
    __SQLTRACE_INTERNALSEXPR(TPtrC8 sqlprnptr(aSqlStmt.Left(aSqlStmt.Length() - 1)));
3256212fc81f Revision: 201033
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 22
diff changeset
   406
	__SQLTRACE_INTERNALSVAR(TBuf<100> des16prnbuf);
3256212fc81f Revision: 201033
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 22
diff changeset
   407
    SQL_TRACE_INTERNALS(OstTraceExt2(TRACE_INTERNALS, STMTPREPARE8_ENTRY, "Entry;0x%X;StmtPrepare8;sql=%s", (TUint)aDbHandle, __SQLPRNSTR8(sqlprnptr, des16prnbuf))); 
0
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   408
	(void)sqlite3SymbianLastOsError();//clear last OS error
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   409
	TBool hasTail = EFalse;
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   410
	TInt err = DoPrepareStmt8(aDbHandle, aSqlStmt.Ptr(), &aStmtHandle, hasTail);
41
3256212fc81f Revision: 201033
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 22
diff changeset
   411
	err = ProcessPrepareError(err, hasTail, aStmtHandle);
3256212fc81f Revision: 201033
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 22
diff changeset
   412
	SQL_TRACE_INTERNALS(OstTraceExt3(TRACE_INTERNALS, STMTPREPARE8_EXIT, "Exit;0x%X;StmtPrepare8;aStmtHandle=0x%X;err=%d", (TUint)aDbHandle, (TUint)aStmtHandle, err)); 
3256212fc81f Revision: 201033
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 22
diff changeset
   413
	return err;
0
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   414
	}
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   415
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   416
/**
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   417
Prepares 8-bit aSqlStmt SQL statement.
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   418
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   419
@param aSqlStmt - zero-terminated string.
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   420
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   421
@leave KErrNoMemory, if there is no memory;
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   422
	   KErrArgument, if the SQL string contains more than one SQL statements;
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   423
	   One of the error codes in [KSqlErrGeneral..KSqlErrNotDb] range.
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   424
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   425
@return The prepared SQL statement handle.
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   426
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   427
@internalComponent
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   428
*/
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   429
sqlite3_stmt* StmtPrepare8L(sqlite3* aDbHandle, const TDesC8& aSqlStmt)
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   430
	{
41
3256212fc81f Revision: 201033
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 22
diff changeset
   431
    __SQLTRACE_INTERNALSEXPR(TPtrC8 sqlprnptr(aSqlStmt.Left(aSqlStmt.Length() - 1)));
3256212fc81f Revision: 201033
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 22
diff changeset
   432
	__SQLTRACE_INTERNALSVAR(TBuf<100> des16prnbuf);
3256212fc81f Revision: 201033
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 22
diff changeset
   433
    SQL_TRACE_INTERNALS(OstTraceExt2(TRACE_INTERNALS, STMTPREPARE8L_ENTRY, "Entry;0x%X;StmtPrepare8L;sql=%s", (TUint)aDbHandle, __SQLPRNSTR8(sqlprnptr, des16prnbuf))); 
0
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   434
	(void)sqlite3SymbianLastOsError();//clear last OS error
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   435
	TBool hasTail = EFalse;
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   436
	sqlite3_stmt* stmtHandle = NULL;
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   437
	TInt err = DoPrepareStmt8(aDbHandle, aSqlStmt.Ptr(), &stmtHandle, hasTail);
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   438
	LeaveIfPrepareErrorL(err, hasTail, stmtHandle);
41
3256212fc81f Revision: 201033
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 22
diff changeset
   439
	SQL_TRACE_INTERNALS(OstTraceExt2(TRACE_INTERNALS, STMTPREPARE8L_EXIT, "Exit;0x%X;StmtPrepare8L;stmtHandle=0x%X", (TUint)aDbHandle, (TUint)stmtHandle)); 
0
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   440
	return stmtHandle;
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   441
	}
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   442
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   443
/**
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   444
Executes upon completion the prepared SQL statement.
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   445
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   446
@param aStmtHandle Prepared statement handle
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   447
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   448
@return KSqlErrStmtExpired, Statement expired (if new functions or collating sequences are 
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   449
							registered or if an authorizer function is added or changed);
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   450
		KErrNoMemory, Out of memory. The statement will be reset;
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   451
		KErrNone, The reset operation completed successfully.							
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   452
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   453
@panic SqlDb 2 In _DEBUG mode. Invalid (NULL) statement handle.
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   454
@panic SqlDb 7 In _DEBUG mode. SQLITE internal error. (SQLITE_ERROR, followed by a sqlite3_reset(), which returns SQLITE_OK)
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   455
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   456
@internalComponent
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   457
*/	
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   458
TInt StmtExec(sqlite3_stmt* aStmtHandle)
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   459
	{
41
3256212fc81f Revision: 201033
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 22
diff changeset
   460
	SQL_TRACE_INTERNALS(OstTraceExt2(TRACE_INTERNALS, STMTEXEC_ENTRY, "Entry;0x%X;StmtExec;aStmtHandle=0x%X", (TUint)sqlite3_db_handle(aStmtHandle), (TUint)aStmtHandle));
3256212fc81f Revision: 201033
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 22
diff changeset
   461
	__ASSERT_DEBUG(aStmtHandle != NULL, __SQLPANIC2(ESqlPanicInvalidObj));
0
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   462
	
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   463
	(void)sqlite3SymbianLastOsError();//clear last OS error
22
a7ba600cb39d Revision: 201021
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 17
diff changeset
   464
0
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   465
	TInt err;
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   466
	while((err = sqlite3_step(aStmtHandle)) == SQLITE_ROW)
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   467
		{
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   468
		}
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   469
		
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   470
	if(err == SQLITE_ERROR)	//It may be "out of memory" problem
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   471
		{
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   472
		err = sqlite3_reset(aStmtHandle);
41
3256212fc81f Revision: 201033
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 22
diff changeset
   473
		__ASSERT_DEBUG(err != SQLITE_OK, __SQLPANIC2(ESqlPanicInternalError));
0
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   474
		}
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   475
		
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   476
	err = ::Sql2OsErrCode(err, sqlite3SymbianLastOsError());
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   477
	if(err == KSqlAtEnd)
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   478
		{
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   479
		err = KErrNone;	
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   480
		}
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   481
41
3256212fc81f Revision: 201033
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 22
diff changeset
   482
	SQL_TRACE_INTERNALS(OstTraceExt3(TRACE_INTERNALS, STMTEXEC_EXIT, "Exit;0x%X;StmtExec;aStmtHandle=0x%X;err=%d", (TUint)sqlite3_db_handle(aStmtHandle), (TUint)aStmtHandle, err));
0
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   483
	return err;
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   484
	}
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   485
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   486
/**
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   487
Executes the SQL statement moving it to the next row if available.
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   488
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   489
@return KSqlErrStmtExpired Statement expired (if new functions or collating sequences are 
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   490
							registered or if an authorizer function is added or changed)
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   491
@return KSqlAtRow, The next record data is ready for processing by the caller;
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   492
		KSqlAtEnd, No more record data;
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   493
		KSqlErrBusy, Database file is locked;
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   494
		KSqlErrGeneral, Run-time error. Next() should not be called anymore;
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   495
		KSqlErrMisuse, Next() called after KSqlAtEnd or KSqlErrGeneral returned by the previous Next() call;
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   496
		KErrNoMemory, Out of memory. The statement will be reset.
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   497
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   498
@panic SqlDb 2 In _DEBUG mode. Invalid (NULL) statement handle.
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   499
@panic SqlDb 7 In _DEBUG mode. SQLITE internal error. (SQLITE_ERROR, followed by a sqlite3_reset(), which returns SQLITE_OK)
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   500
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   501
@internalComponent
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   502
*/	
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   503
TInt StmtNext(sqlite3_stmt* aStmtHandle)
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   504
	{
41
3256212fc81f Revision: 201033
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 22
diff changeset
   505
	SQL_TRACE_INTERNALS(OstTraceExt2(TRACE_INTERNALS, STMTNEXT_ENTRY, "Entry;0x%X;StmtNext;aStmtHandle=0x%X", (TUint)sqlite3_db_handle(aStmtHandle), (TUint)aStmtHandle));
3256212fc81f Revision: 201033
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 22
diff changeset
   506
	__ASSERT_DEBUG(aStmtHandle != NULL, __SQLPANIC2(ESqlPanicInvalidObj));
0
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   507
	
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   508
	(void)sqlite3SymbianLastOsError();//clear last OS error
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   509
	
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   510
	TInt err = sqlite3_step(aStmtHandle);
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   511
	if(err == SQLITE_ERROR)	//It may be "out of memory" problem
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   512
		{
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   513
		err = sqlite3_reset(aStmtHandle);
41
3256212fc81f Revision: 201033
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 22
diff changeset
   514
		__ASSERT_DEBUG(err != SQLITE_OK, __SQLPANIC2(ESqlPanicInternalError));
0
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   515
		}
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   516
	err = ::Sql2OsErrCode(err, sqlite3SymbianLastOsError());
41
3256212fc81f Revision: 201033
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 22
diff changeset
   517
	SQL_TRACE_INTERNALS(OstTraceExt3(TRACE_INTERNALS, STMTNEXT_EXIT, "Exit;0x%X;StmtNext;aStmtHandle=0x%X;err=%d", (TUint)sqlite3_db_handle(aStmtHandle), (TUint)aStmtHandle, err));
0
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   518
	return err;
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   519
	}
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   520
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   521
/**
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   522
Resets the prepared SQL statement to its initial state and makes it ready to be executed again.
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   523
Any SQL statement parameters that had values bound to them, retain their values.
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   524
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   525
@return KSqlErrStmtExpired, Statement expired (if new functions or collating sequences are 
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   526
							registered or if an authorizer function is added or changed);
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   527
		KErrNone, The reset operation completed successfully.							
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   528
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   529
@panic SqlDb 2 In _DEBUG mode. Invalid (NULL) statement handle.
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   530
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   531
@internalComponent
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   532
*/	
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   533
TInt StmtReset(sqlite3_stmt* aStmtHandle)
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   534
	{
41
3256212fc81f Revision: 201033
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 22
diff changeset
   535
	SQL_TRACE_INTERNALS(OstTraceExt2(TRACE_INTERNALS, STMTRESET_ENTRY, "Entry;0x%X;StmtReset;aStmtHandle=0x%X", (TUint)sqlite3_db_handle(aStmtHandle), (TUint)aStmtHandle));
3256212fc81f Revision: 201033
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 22
diff changeset
   536
	__ASSERT_DEBUG(aStmtHandle != NULL, __SQLPANIC2(ESqlPanicInvalidObj));
0
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   537
	
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   538
	(void)sqlite3SymbianLastOsError();//clear last OS error
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   539
	
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   540
	TInt err = sqlite3_reset(aStmtHandle);
41
3256212fc81f Revision: 201033
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 22
diff changeset
   541
	err = ::Sql2OsErrCode(err, sqlite3SymbianLastOsError());
3256212fc81f Revision: 201033
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 22
diff changeset
   542
	SQL_TRACE_INTERNALS(OstTraceExt3(TRACE_INTERNALS, STMTRESET_EXIT, "Exit;0x%X;StmtReset;aStmtHandle=0x%X;err=%d", (TUint)sqlite3_db_handle(aStmtHandle), (TUint)aStmtHandle, err));
3256212fc81f Revision: 201033
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 22
diff changeset
   543
	return err;
0
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   544
	}
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   545
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   546
/**
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   547
Prepares and executes PRAGMA statement and moves the statement cursor on the first row.
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   548
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   549
@param aDbHandle Database handle
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   550
@param aDbName Attached database name or KNullDesC for the main database
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   551
@param aPragmaSql Pragma sql statement
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   552
@param aStmtHandle An output parameter where the statement handle will be stored
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   553
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   554
@panic SqlDb 7 In _DEBUG mode if aDbHandle is NULL
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   555
@panic SqlDb 4 In _DEBUG mode if aPragmaSql length is 0 or if the statement is not zero-terminated
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   556
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   557
@return KErrNone,     Operation completed successfully;
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   558
		KErrNoMemory, Out of memory;
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   559
					  Other system-wide error codes or SQL errors of ESqlDbError type.
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   560
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   561
@internalComponent
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   562
*/
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   563
static TInt PreRetrievePragmaValue(sqlite3* aDbHandle, const TDesC& aDbName, const TDesC8& aPragmaSql, sqlite3_stmt*& aStmtHandle)
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   564
	{
41
3256212fc81f Revision: 201033
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 22
diff changeset
   565
    __SQLTRACE_INTERNALSEXPR(TPtrC8 sqlprnptr(aPragmaSql.Left(aPragmaSql.Length() - 1)));
3256212fc81f Revision: 201033
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 22
diff changeset
   566
	__SQLTRACE_INTERNALSVAR(TBuf<100> des16prnbuf);
3256212fc81f Revision: 201033
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 22
diff changeset
   567
    SQL_TRACE_INTERNALS(OstTraceExt3(TRACE_INTERNALS, PRERETRIEVEPRAGMAVALUE_ENTRY, "Entry;0x%X;PreRetrievePragmaValue;aDbName=%S;aPragmaSql=%s", (TUint)aDbHandle, __SQLPRNSTR(aDbName), __SQLPRNSTR8(sqlprnptr, des16prnbuf)));
3256212fc81f Revision: 201033
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 22
diff changeset
   568
	__ASSERT_DEBUG(aDbHandle != NULL, __SQLPANIC2(ESqlPanicInternalError));
3256212fc81f Revision: 201033
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 22
diff changeset
   569
	__ASSERT_DEBUG(aPragmaSql.Length() > 0, __SQLPANIC2(ESqlPanicBadArgument));
3256212fc81f Revision: 201033
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 22
diff changeset
   570
	__ASSERT_DEBUG(aPragmaSql[aPragmaSql.Length() - 1] == 0, __SQLPANIC2(ESqlPanicBadArgument));
0
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   571
	TBuf8<KMaxFileName> dbName;
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   572
	if(!UTF16ToUTF8(aDbName, dbName))
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   573
		{
41
3256212fc81f Revision: 201033
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 22
diff changeset
   574
		SQL_TRACE_INTERNALS(OstTrace1(TRACE_INTERNALS, PRERETRIEVEPRAGMAVALUE_EXIT1, "Exit;0x%X;PreRetrievePragmaValue;err=KErrGeneral", (TUint)aDbHandle));
0
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   575
		return KErrGeneral;
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   576
		}
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   577
	TBuf8<KMaxFileName + 64> sql;//64 characters is enough for the longest PRAGMA statement
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   578
	if(dbName == KNullDesC8)
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   579
		{
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   580
		sql.Format(aPragmaSql, &KMainDb8);
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   581
		}
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   582
	else
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   583
		{
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   584
		sql.Format(aPragmaSql, &dbName);
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   585
		}
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   586
	aStmtHandle = NULL;
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   587
	TInt err = ::StmtPrepare8(aDbHandle, sql, aStmtHandle);
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   588
	if(err == KErrNone)
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   589
		{
41
3256212fc81f Revision: 201033
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 22
diff changeset
   590
		__ASSERT_DEBUG(aStmtHandle != NULL, __SQLPANIC2(ESqlPanicInvalidObj));
0
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   591
		err = ::StmtNext(aStmtHandle);
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   592
		}
41
3256212fc81f Revision: 201033
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 22
diff changeset
   593
	SQL_TRACE_INTERNALS(OstTraceExt3(TRACE_INTERNALS, PRERETRIEVEPRAGMAVALUE_EXIT2, "Exit;0x%X;PreRetrievePragmaValue;aStmtHandle=0x%X;err=%d", (TUint)aDbHandle, (TUint)aStmtHandle, err));
0
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   594
	return err;
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   595
	}
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   596
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   597
/**
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   598
Prepares and executes PRAGMA statement and retrieves the value of column 0 (the pragma value).
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   599
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   600
@param aDbHandle Database handle
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   601
@param aDbName Attached database name or KNullDesC for the main database
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   602
@param aPragmaSql Pragma sql statement
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   603
@param aPragmaValue An output parameter where the pragma value will be stored
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   604
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   605
@panic SqlDb 7 In _DEBUG mode if aDbHandle is NULL
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   606
@panic SqlDb 4 In _DEBUG mode if aPragmaSql length is 0 or if the statement is not zero-terminated
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   607
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   608
@return KErrNone,     Operation completed successfully;
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   609
		KErrNoMemory, Out of memory;
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   610
					  Other system-wide error codes or SQL errors of ESqlDbError type.
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   611
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   612
@internalComponent
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   613
*/
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   614
static TInt RetrievePragmaValue(sqlite3* aDbHandle, const TDesC& aDbName, const TDesC8& aPragmaSql, TInt& aPragmaValue)
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   615
	{
41
3256212fc81f Revision: 201033
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 22
diff changeset
   616
	__ASSERT_DEBUG(aDbHandle != NULL, __SQLPANIC2(ESqlPanicInternalError));
3256212fc81f Revision: 201033
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 22
diff changeset
   617
	__ASSERT_DEBUG(aPragmaSql.Length() > 0, __SQLPANIC2(ESqlPanicBadArgument));
3256212fc81f Revision: 201033
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 22
diff changeset
   618
	__ASSERT_DEBUG(aPragmaSql[aPragmaSql.Length() - 1] == 0, __SQLPANIC2(ESqlPanicBadArgument));
0
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   619
	sqlite3_stmt* stmtHandle = NULL;
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   620
	TInt err = PreRetrievePragmaValue(aDbHandle, aDbName, aPragmaSql, stmtHandle);
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   621
	if(err == KSqlAtRow)
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   622
		{
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   623
		aPragmaValue = sqlite3_column_int(stmtHandle, 0);
22
a7ba600cb39d Revision: 201021
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 17
diff changeset
   624
		err = aPragmaValue >= 0 ? KErrNone : KErrCorrupt;
0
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   625
		}
22
a7ba600cb39d Revision: 201021
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 17
diff changeset
   626
	(void)FinalizeStmtHandle(stmtHandle);//sqlite3_finalize() fails only if an invalid statement handle is passed.
0
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   627
	return err;
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   628
	}
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   629
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   630
/**
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   631
Prepares and executes PRAGMA statement and retrieves the value of column 0 (the pragma value) as text.
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   632
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   633
@param aDbHandle Database handle
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   634
@param aDbName Attached database name or KNullDesC for the main database
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   635
@param aPragmaSql Pragma sql statement
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   636
@param aPragmaValue An output parameter where the pragma value will be stored (as text)
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   637
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   638
@panic SqlDb 7 In _DEBUG mode if aDbHandle is NULL
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   639
@panic SqlDb 4 In _DEBUG mode if aPragmaSql length is 0 or if the statement is not zero-terminated
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   640
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   641
@return KErrNone,     Operation completed successfully;
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   642
		KErrNoMemory, Out of memory;
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   643
					  Other system-wide error codes or SQL errors of ESqlDbError type.
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   644
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   645
@internalComponent
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   646
*/
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   647
static TInt RetrievePragmaValue(sqlite3* aDbHandle, const TDesC& aDbName, const TDesC8& aPragmaSql, TDes8& aPragmaValue)
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   648
	{
41
3256212fc81f Revision: 201033
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 22
diff changeset
   649
	__ASSERT_DEBUG(aDbHandle != NULL, __SQLPANIC2(ESqlPanicInternalError));
3256212fc81f Revision: 201033
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 22
diff changeset
   650
	__ASSERT_DEBUG(aPragmaSql.Length() > 0, __SQLPANIC2(ESqlPanicBadArgument));
3256212fc81f Revision: 201033
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 22
diff changeset
   651
	__ASSERT_DEBUG(aPragmaSql[aPragmaSql.Length() - 1] == 0, __SQLPANIC2(ESqlPanicBadArgument));
0
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   652
	sqlite3_stmt* stmtHandle = NULL;
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   653
	TInt err = PreRetrievePragmaValue(aDbHandle, aDbName, aPragmaSql, stmtHandle);
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   654
	if(err == KSqlAtRow)
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   655
		{
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   656
		TPtrC8 ptr(sqlite3_column_text(stmtHandle, 0));
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   657
		aPragmaValue.Copy(ptr);
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   658
		err = KErrNone;
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   659
		}
22
a7ba600cb39d Revision: 201021
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 17
diff changeset
   660
	(void)FinalizeStmtHandle(stmtHandle);//sqlite3_finalize() fails only if an invalid statement handle is passed.
0
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   661
	return err;
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   662
	}
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   663
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   664
/**
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   665
Retrieves the database pages count.
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   666
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   667
@param aDbHandle Database handle
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   668
@param aDbName Attached database name or KNullDesC for the main database
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   669
@param aPageCount An output parameter where the database pages count will be stored
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   670
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   671
@return KErrNone,     Operation completed successfully;
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   672
		KErrNoMemory, Out of memory;
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   673
					  Other system-wide error codes or SQL errors of ESqlDbError type.
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   674
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   675
@panic SqlDb 7 In _DEBUG mode if aDbHandle is NULL
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   676
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   677
@internalComponent
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   678
*/
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   679
TInt DbPageCount(sqlite3* aDbHandle, const TDesC& aDbName, TInt& aPageCount)
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   680
	{
41
3256212fc81f Revision: 201033
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 22
diff changeset
   681
	__ASSERT_DEBUG(aDbHandle != NULL, __SQLPANIC2(ESqlPanicInternalError));
0
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   682
	return RetrievePragmaValue(aDbHandle, aDbName, KPageCountPragma, aPageCount);
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   683
	}
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   684
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   685
/**
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   686
Retrieves the database page size.
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   687
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   688
@param aDbHandle Database handle
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   689
@param aDbName Attached database name or KNullDesC for the main database
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   690
@param aPageSize An output parameter where the page size will be stored
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   691
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   692
@return KErrNone,     Operation completed successfully;
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   693
		KErrNoMemory, Out of memory;
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   694
					  Other system-wide error codes or SQL errors of ESqlDbError type.
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   695
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   696
@panic SqlDb 7 In _DEBUG mode if aDbHandle is NULL
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   697
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   698
@internalComponent
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   699
*/
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   700
TInt DbPageSize(sqlite3* aDbHandle, const TDesC& aDbName, TInt& aPageSize)
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   701
	{
41
3256212fc81f Revision: 201033
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 22
diff changeset
   702
	__ASSERT_DEBUG(aDbHandle != NULL, __SQLPANIC2(ESqlPanicInternalError));
0
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   703
	return RetrievePragmaValue(aDbHandle, aDbName, KPageSizePragma, aPageSize);
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   704
	}
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   705
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   706
/**
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   707
Retrieves the database cache size in pages.
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   708
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   709
@param aDbHandle Database handle
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   710
@param aDbName Attached database name or KNullDesC for the main database
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   711
@param aCacheSize An output parameter where the cache size will be stored
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   712
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   713
@return KErrNone,     Operation completed successfully;
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   714
		KErrNoMemory, Out of memory;
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   715
					  Other system-wide error codes or SQL errors of ESqlDbError type.
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   716
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   717
@panic SqlDb 7 In _DEBUG mode if aDbHandle is NULL
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   718
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   719
@internalComponent
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   720
*/
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   721
TInt DbCacheSize(sqlite3* aDbHandle, const TDesC& aDbName, TInt& aCacheSize)
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   722
	{
41
3256212fc81f Revision: 201033
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 22
diff changeset
   723
	__ASSERT_DEBUG(aDbHandle != NULL, __SQLPANIC2(ESqlPanicInternalError));
0
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   724
	return RetrievePragmaValue(aDbHandle, aDbName, KCacheSizePragma, aCacheSize);
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   725
	}
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   726
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   727
/**
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   728
Retrieves the database encoding.
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   729
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   730
@param aDbHandle Database handle
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   731
@param aDbName Attached database name or KNullDesC for the main database
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   732
@param aEncoding An output parameter where the encoding type will be stored (as text)
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   733
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   734
@return KErrNone,     Operation completed successfully;
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   735
		KErrNoMemory, Out of memory;
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   736
					  Other system-wide error codes or SQL errors of ESqlDbError type.
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   737
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   738
@panic SqlDb 7 In _DEBUG mode if aDbHandle is NULL
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   739
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   740
@internalComponent
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   741
*/
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   742
TInt DbEncoding(sqlite3* aDbHandle, const TDesC& aDbName, TDes8& aEncoding)
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   743
	{
41
3256212fc81f Revision: 201033
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 22
diff changeset
   744
	__ASSERT_DEBUG(aDbHandle != NULL, __SQLPANIC2(ESqlPanicInternalError));
0
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   745
	return RetrievePragmaValue(aDbHandle, aDbName, KEncodingPragma, aEncoding);
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   746
	}
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   747
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   748
/**
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   749
Retrieves the database free pages count.
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   750
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   751
@param aDbHandle Database handle
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   752
@param aDbName Attached database name or KNullDesC for the main database
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   753
@param aPageCount An output parameter where the free pages count will be stored
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   754
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   755
@return KErrNone,     Operation completed successfully;
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   756
		KErrNoMemory, Out of memory;
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   757
					  Other system-wide error codes or SQL errors of ESqlDbError type.
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   758
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   759
@panic SqlDb 7 In _DEBUG mode if aDbHandle is NULL
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   760
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   761
@internalComponent
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   762
*/
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   763
TInt DbFreePageCount(sqlite3* aDbHandle, const TDesC& aDbName, TInt& aPageCount)
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   764
	{
41
3256212fc81f Revision: 201033
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 22
diff changeset
   765
	__ASSERT_DEBUG(aDbHandle != NULL, __SQLPANIC2(ESqlPanicInternalError));
0
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   766
	return RetrievePragmaValue(aDbHandle, aDbName, KFreePageCountPragma, aPageCount);
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   767
	}
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   768
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   769
/**
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   770
Retrieves the current vacuum mode of the database.
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   771
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   772
@param aDbHandle Database handle
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   773
@param aDbName Attached database name or KNullDesC for the main database
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   774
@param aVacuumMode An output parameter where the current vacuum mode will be stored
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   775
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   776
@return KErrNone,     Operation completed successfully;
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   777
		KErrNoMemory, Out of memory;
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   778
					  Other system-wide error codes or SQL errors of ESqlDbError type.
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   779
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   780
@panic SqlDb 7 In _DEBUG mode if aDbHandle is NULL
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   781
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   782
@internalComponent
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   783
*/
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   784
TInt DbVacuumMode(sqlite3* aDbHandle, const TDesC& aDbName, TInt& aVacuumMode)
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   785
	{
41
3256212fc81f Revision: 201033
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 22
diff changeset
   786
	__ASSERT_DEBUG(aDbHandle != NULL, __SQLPANIC2(ESqlPanicInternalError));
0
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   787
	return RetrievePragmaValue(aDbHandle, aDbName, KVacuumModePragma, aVacuumMode);
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   788
	}
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   789
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   790
static TBool IsCompactTimeLimitReached(TUint32 aStartTicks, TUint32 aCurrTicks, TInt aMaxTime)
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   791
	{
41
3256212fc81f Revision: 201033
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 22
diff changeset
   792
	__ASSERT_DEBUG(aMaxTime > 0, __SQLPANIC2(ESqlPanicBadArgument));
0
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   793
	TInt64 tickDiff64 = (TInt64)aCurrTicks - (TInt64)aStartTicks;
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   794
	if(tickDiff64 < 0)
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   795
		{
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   796
		tickDiff64 = KMaxTUint32 + tickDiff64 + 1;
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   797
		}
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   798
	static TInt freq = 0;
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   799
	TInt err = KErrNone;
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   800
	if(freq == 0)
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   801
		{
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   802
		err = HAL::Get(HAL::EFastCounterFrequency, freq);
41
3256212fc81f Revision: 201033
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 22
diff changeset
   803
		SQL_TRACE_INTERNALS(OstTraceExt2(TRACE_INTERNALS, ISCOMPACTTIMELIMITREACHED, "0;IsCompactTimeLimitReached;fast counter frequency=%d;err=%d", freq, err));
0
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   804
		}
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   805
	if(err == KErrNone && freq > 0)
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   806
		{
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   807
		const TInt KMicroSecIn1Sec = 1000000;
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   808
		const TInt KMicroSecIn1Ms = 1000;
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   809
		TInt64 usDiff64 = (tickDiff64 * KMicroSecIn1Sec) / freq;
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   810
		if(usDiff64 > aMaxTime * KMicroSecIn1Ms)
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   811
			{
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   812
			return ETrue;	
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   813
			}
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   814
		}
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   815
	return EFalse;
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   816
	}
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   817
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   818
/**
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   819
Compacts the database.
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   820
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   821
@param aDbHandle 			Database handle.
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   822
@param aPageCount 			Count of the free database pages to be removed from the file.
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   823
@param aProcessedPageCount	Output parameter. How many pages actually have been removed from the file.
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   824
@param aMaxTime				The max allowed time in milliseconds for the compact operation.
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   825
							If aMaxTime is zero, then aPageCount pages will be removed regardless the time.
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   826
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   827
@return KErrNone,     Operation completed successfully;
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   828
					  Other system-wide error codes or SQL errors of ESqlDbError type.
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   829
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   830
@panic SqlDb 4 In _DEBUG mode if aPageCount is negative
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   831
@panic SqlDb 4 In _DEBUG mode if aMaxTime is negative
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   832
@panic SqlDb 7 In _DEBUG mode if aDbHandle is NULL
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   833
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   834
@internalComponent
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   835
*/
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   836
TInt DbCompact(sqlite3* aDbHandle, const TDesC& aDbName, TInt aPageCount, TInt& aProcessedPageCount, TInt aMaxTime)
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   837
	{
41
3256212fc81f Revision: 201033
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 22
diff changeset
   838
	SQL_TRACE_INTERNALS(OstTraceExt4(TRACE_INTERNALS, DBCOMPACT_ENTRY, "Entry;0x%X;DbCompact;aDbName=%S;aPageCount=%d;aMaxTime=%d", (TUint)aDbHandle, __SQLPRNSTR(aDbName), aPageCount, aMaxTime));
3256212fc81f Revision: 201033
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 22
diff changeset
   839
	__ASSERT_DEBUG(aPageCount >= 0, __SQLPANIC2(ESqlPanicBadArgument));
3256212fc81f Revision: 201033
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 22
diff changeset
   840
	__ASSERT_DEBUG(aMaxTime >= 0, __SQLPANIC2(ESqlPanicBadArgument));
3256212fc81f Revision: 201033
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 22
diff changeset
   841
	__ASSERT_DEBUG(aDbHandle != NULL, __SQLPANIC2(ESqlPanicInternalError));
0
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   842
	TBuf8<KMaxFileName> dbName;
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   843
	if(!UTF16ToUTF8(aDbName, dbName))
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   844
		{
41
3256212fc81f Revision: 201033
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 22
diff changeset
   845
		SQL_TRACE_INTERNALS(OstTrace1(TRACE_INTERNALS, DBCOMPACT_EXIT1, "Exit;0x%X;DbCompact;err=KErrGeneral", (TUint)aDbHandle));
0
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   846
		return KErrGeneral;
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   847
		}
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   848
	TBuf8<KMaxFileName + sizeof(KIncrementalVacuumPragma) + 1> sql;
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   849
	if(dbName == KNullDesC8)
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   850
		{
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   851
		sql.Format(KIncrementalVacuumPragma, &KMainDb8, aPageCount);
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   852
		}
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   853
	else
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   854
		{
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   855
		sql.Format(KIncrementalVacuumPragma, &dbName, aPageCount);
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   856
		}
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   857
	//Currently there is no way to check how many pages have been compacted without executing a "PRAGMA freelist_count"	
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   858
	//statement, if sqlite3_exec() is used. 
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   859
	//So, instead of calling sqlite3_exec(), the function prepares and executes the "PRAGMA incremental_vacuum(N)"
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   860
	//statement using sqlite3_step() and counts the steps, because each step compacts one page.
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   861
	(void)sqlite3SymbianLastOsError();//clear last OS error
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   862
	sqlite3_stmt* stmtHandle = NULL;
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   863
	const char* stmtTail = NULL;
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   864
	aProcessedPageCount = 0;
17
55f2396f6d25 Revision: 201018
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 0
diff changeset
   865
	//sqlite3_prepare_v2() expects parameter #3 to be one of the following:
55f2396f6d25 Revision: 201018
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 0
diff changeset
   866
	// - byte length of the sql statement (parameter #2), excluding terminating zero;
55f2396f6d25 Revision: 201018
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 0
diff changeset
   867
	// - negative value - the sql statement (parameter #2) is zero-terminated;
0
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   868
	TInt err = sqlite3_prepare_v2(aDbHandle, (const char*)sql.Ptr(), sql.Length() - sizeof(TUint8), &stmtHandle, &stmtTail);
41
3256212fc81f Revision: 201033
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 22
diff changeset
   869
	__ASSERT_DEBUG(err == SQLITE_OK ? !stmtTail || User::StringLength((const TUint8*)stmtTail) == 0 : !stmtHandle, __SQLPANIC2(ESqlPanicInternalError));
0
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   870
	if(stmtHandle)	//stmtHandle can be NULL for statements like this: ";".
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   871
		{
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   872
		if(err == SQLITE_OK)
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   873
			{
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   874
			TUint32 startTicks = 0;
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   875
			if(aMaxTime > 0)
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   876
				{
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   877
				startTicks = User::FastCounter();
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   878
				}
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   879
			while((err = sqlite3_step(stmtHandle)) == SQLITE_ROW)
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   880
				{
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   881
				++aProcessedPageCount;
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   882
				if(aMaxTime > 0 && IsCompactTimeLimitReached(startTicks, User::FastCounter(), aMaxTime))
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   883
					{
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   884
					err = SQLITE_DONE;//The statement execution did not complete because of the time limit
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   885
					break;	
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   886
					}
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   887
				}
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   888
			if(err == SQLITE_ERROR)	//It may be "out of memory" problem
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   889
				{
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   890
				err = sqlite3_reset(stmtHandle);
41
3256212fc81f Revision: 201033
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 22
diff changeset
   891
				__ASSERT_DEBUG(err != SQLITE_OK, __SQLPANIC2(ESqlPanicInternalError));
0
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   892
				}
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   893
			}
22
a7ba600cb39d Revision: 201021
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 17
diff changeset
   894
		(void)sqlite3_finalize(stmtHandle);//sqlite3_finalize() fails only if an invalid statement handle is passed.
0
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   895
		}
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   896
	err = ::Sql2OsErrCode(err, sqlite3SymbianLastOsError());
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   897
	if(err == KSqlAtEnd)
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   898
		{
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   899
		err = KErrNone;	
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   900
		}
41
3256212fc81f Revision: 201033
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 22
diff changeset
   901
	SQL_TRACE_INTERNALS(OstTraceExt3(TRACE_INTERNALS, DBCOMPACT_EXIT2, "Exit;0x%X;DbCompact;aProcessedPageCount=%d;err=%d", (TUint)aDbHandle, aProcessedPageCount, err));
0
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   902
	return err;
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   903
	}
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   904
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   905
/**
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   906
Finalizes the statement handle.
22
a7ba600cb39d Revision: 201021
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 17
diff changeset
   907
Although the function can return an error, it is ok not to check the returned error,
a7ba600cb39d Revision: 201021
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 17
diff changeset
   908
because sqlite3_finalize() fails only if invalid statement handle is passed as an argument.
a7ba600cb39d Revision: 201021
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 17
diff changeset
   909
a7ba600cb39d Revision: 201021
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 17
diff changeset
   910
@return KErrNone,     Operation completed successfully;
a7ba600cb39d Revision: 201021
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 17
diff changeset
   911
					  Other system-wide error codes or SQL errors of ESqlDbError type.
0
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   912
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   913
@internalComponent
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   914
*/
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   915
TInt FinalizeStmtHandle(sqlite3_stmt* aStmtHandle)
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   916
	{
41
3256212fc81f Revision: 201033
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 22
diff changeset
   917
	SQL_TRACE_INTERNALS(OstTraceExt2(TRACE_INTERNALS, FINALIZESTMTHANDLE_ENTRY, "Entry;0x%X;FinalizeStmtHandle;aStmtHandle=0x%X", (TUint)sqlite3_db_handle(aStmtHandle), (TUint)aStmtHandle));
0
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   918
	TInt err = KErrNone;
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   919
	if(aStmtHandle)
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   920
		{
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   921
		(void)sqlite3SymbianLastOsError();//clear last OS error
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   922
		err = sqlite3_finalize(aStmtHandle);
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   923
		err = ::Sql2OsErrCode(err, sqlite3SymbianLastOsError());
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   924
		}
41
3256212fc81f Revision: 201033
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 22
diff changeset
   925
	SQL_TRACE_INTERNALS(OstTrace1(TRACE_INTERNALS, FINALIZESTMTHANDLE_EXIT, "Exit;0;FinalizeStmtHandle;err=%d", err));
0
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   926
	return err;
08ec8eefde2f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   927
	}