--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/internetradio2.0/sessionlogsrc/irsessiondb.cpp Mon Apr 19 14:01:53 2010 +0300
@@ -0,0 +1,449 @@
+/*
+* Copyright (c) 2006-2007 Nokia Corporation and/or its subsidiary(-ies).
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of "Eclipse Public License v1.0"
+* which accompanies this distribution, and is available
+* at the URL "http://www.eclipse.org/legal/epl-v10.html".
+*
+* Initial Contributors:
+* Nokia Corporation - initial contribution.
+*
+* Contributors:
+*
+* Description: ?Description
+*
+*/
+
+
+#include <bautils.h>
+
+#include "irdebug.h"
+#include "irsessiondb.h"
+#include "irsessionloggerutility.h"
+
+_LIT(KSessionTable,"Session");
+_LIT(KID,"id");
+_LIT(KSessionLogCol, "SessionData");
+_LIT(KSessionIndex,"SessionIndex");
+
+const TInt KMaxNoSession = 15;
+
+
+// ======== LOCAL FUNCTIONS ========
+
+
+// ======== MEMBER FUNCTIONS ========
+
+// ---------------------------------------------------------------------------
+// Function : NewL()
+// two phased construction
+// ---------------------------------------------------------------------------
+//
+ CIRSessionDb* CIRSessionDb::NewL()
+ {
+ IRLOG_DEBUG( "CIRSessionDb::NewL" );
+ CIRSessionDb* self;
+ self=CIRSessionDb::NewLC();
+ CleanupStack::Pop(self);
+ IRLOG_DEBUG( "CIRSessionDb::NewL - Exiting." );
+ return self;
+ }
+
+
+// ---------------------------------------------------------------------------
+// Function : NewLC()
+// Two phased construction
+// ---------------------------------------------------------------------------
+//
+ CIRSessionDb* CIRSessionDb::NewLC()
+ {
+ IRLOG_DEBUG( "CIRSessionDb::NewLC" );
+ CIRSessionDb *self;
+ self=new(ELeave)CIRSessionDb;
+ CleanupStack::PushL(self);
+ self->ConstructL();
+ IRLOG_DEBUG( "CIRSessionDb::NewLC - Exiting." );
+ return self;
+ }
+
+
+// ---------------------------------------------------------------------------
+// CIRSessionDb::~CIRSessionDb()
+// default destructor
+// ---------------------------------------------------------------------------
+//
+CIRSessionDb::~CIRSessionDb()
+ {
+ IRLOG_DEBUG( "CIRSessionDb::~CIRSessionDb" );
+ CloseDb();
+ iFsSession.Close();
+ IRLOG_DEBUG( "CIRSessionDb::~CIRSessionDb - Exiting." );
+ }
+
+// ---------------------------------------------------------------------------
+// CIRSessionDb::CreateDbConditional()
+// Creates both the dbms files conditionally(only if not yet created)
+// calls CreateDbL()
+// ---------------------------------------------------------------------------
+//
+ TInt CIRSessionDb::CreateDbConditional(TFileName &aSession)
+ {
+ IRLOG_DEBUG( "CIRSessionDb::CreateDbConditional" );
+ iDbFile.Copy(aSession);
+ if( !BaflUtils::FileExists(iFsSession, iDbFile) )
+ {
+ TRAPD(error,CreateDbL(iDbFile));
+ if( error )
+ {
+ IRLOG_DEBUG( "CIRSessionDb::CreateDbConditional - Exiting (1)." );
+ return error;
+ }
+ }
+ IRLOG_DEBUG( "CIRSessionDb::CreateDbConditional - Exiting (2)." );
+ return KErrNone;
+ }
+
+// ---------------------------------------------------------------------------
+// CIRSessionDb:AddSessionStartL()
+// adds the session log entry into data base
+// ---------------------------------------------------------------------------
+//
+void CIRSessionDb::AddSessionStartL(CIRSessionLogger& aSession)
+ {
+ IRLOG_DEBUG( "CIRSessionDb::AddSessionStartL" );
+ OpenDbL();
+ RDbTable sessionlogtable;
+ TInt error=sessionlogtable.Open(iSessionDb,KSessionTable,sessionlogtable.
+ EUpdatable);
+ CleanupClosePushL(sessionlogtable);
+ if( error )
+ {
+ CloseDb();
+ User::LeaveIfError(error);
+ }
+
+ //! arrange the presets in incresing order of index
+ sessionlogtable.SetIndex(KSessionIndex);
+ sessionlogtable.Reset();
+
+ //if session log is greater or equal to than 5
+ if( sessionlogtable.CountL() >= KMaxNoSession )
+ {
+ //first row is selected
+ sessionlogtable.FirstL();
+ //the current row is selected
+ sessionlogtable.GetL();
+ //delete that entry
+ sessionlogtable.DeleteL();
+ }
+ CleanupStack::PopAndDestroy(&sessionlogtable);
+ //Algorithm : else condition need not handle seperatly
+ //Algorithm : add sessionid and informations like
+ //starttime,connectedfrom,sessionid,connectiontype,channelid
+ //currentnetwork,homenetwork,sessiontable
+ //Algorithm: if no. of session is greater than 5
+
+ _LIT(query,"SELECT * FROM %S");
+ HBufC* sqlStr=HBufC::NewLC(query().Length() + KSessionTable().Length());
+ sqlStr->Des().Format(query,&KSessionTable);
+
+ // Create a view on the database
+ RDbView view;
+ error = view.Prepare(iSessionDb,*sqlStr);
+ if( error )
+ {
+ CloseDb();
+ User::LeaveIfError(error);
+ }
+ CleanupStack::PopAndDestroy(sqlStr);
+ CleanupClosePushL(view);
+ error = view.EvaluateAll();
+ if( error )
+ {
+ CloseDb();
+ User::LeaveIfError(error);
+ }
+ CDbColSet* columns = view.ColSetL();
+ CleanupStack::PushL(columns);
+
+ RDbColWriteStream writeStream;
+ TRAP(error,//trap start
+ // Insert a row. Column order matches sql select statement
+ view.InsertL();
+ //get index
+ view.SetColL(columns->ColNo(KID), aSession.SessionId());
+ //!open stream
+ writeStream.OpenLC(view,columns->ColNo(KSessionLogCol));
+ aSession.ExternalizeL(writeStream);
+ writeStream.CommitL();
+ CleanupStack::PopAndDestroy(&writeStream);
+ );
+
+ CleanupStack::PopAndDestroy(columns);
+ if( error!=KErrNone )
+ {
+ CloseDb();
+ User::LeaveIfError(error);
+ }
+ view.PutL();
+ CleanupStack::PopAndDestroy(&view);
+ CloseDb();
+ IRLOG_DEBUG( "CIRSessionDb::AddSessionStartL - Exiting." );
+ }
+
+// ---------------------------------------------------------------------------
+// CIRSessionDb::GetAllPresetL()
+// gets all the preset into an array
+// ---------------------------------------------------------------------------
+//
+void CIRSessionDb::GetAllSessionL(
+ CArrayPtrFlat<CIRSessionLogger>& aSessionDataList)
+ {
+ IRLOG_DEBUG( "CIRSessionDb::GetAllSessionL" );
+ OpenDbL();
+ //not sure about this resetanddestroy
+ //! Open for preset master
+ aSessionDataList.ResetAndDestroy();
+ //! temp item for holding the retrived data
+ CIRSessionLogger *item;
+ RDbColReadStream instream;
+ RDbTable table;
+ TInt error = table.Open(iSessionDb, KSessionTable, table.EReadOnly);
+ CleanupClosePushL(table);
+ if( error!=KErrNone )
+ {
+ //if open fails function leaves
+ CloseDb();
+ User::LeaveIfError(error);
+ }
+
+ CDbColSet* colSet = table.ColSetL();
+ CleanupStack::PushL(colSet);
+
+ //! arrange the presets in incresing order of index
+ table.SetIndex(KSessionIndex);
+ table.Reset();
+ //! recursively retrive the preset data from the master table
+ for (table.FirstL(); table.AtRow(); table.NextL())
+ {
+ item=CIRSessionLogger::NewL();
+ CleanupStack::PushL(item);
+ table.GetL();
+ instream.OpenLC( table, colSet->ColNo( KSessionLogCol ) );
+ item->InternalizeL(instream);
+ //update sessionid
+ aSessionDataList.AppendL(item);
+ CleanupStack::PopAndDestroy(&instream);
+ CleanupStack::Pop(item);
+ }
+
+ CleanupStack::PopAndDestroy(colSet);
+ //!close the master table
+ CleanupStack::PopAndDestroy(&table);
+ CloseDb();
+ IRLOG_DEBUG( "CIRSessionDb::GetAllSessionL - Exiting." );
+ }
+
+// ---------------------------------------------------------------------------
+// Function : DeleteAllSession
+// delete all the session from session log entry
+// ---------------------------------------------------------------------------
+//
+void CIRSessionDb::DeleteAllSessionL()
+ {
+ IRLOG_DEBUG( "CIRSessionDb::DeleteAllSessionL" );
+ //opening a data base
+ OpenDbL();
+ RDbTable sessionlogtable;
+ //data base table opened
+ TInt error=sessionlogtable.Open(iSessionDb,KSessionTable,sessionlogtable.
+ EUpdatable);
+ CleanupClosePushL(sessionlogtable);
+ if( error!=KErrNone )
+ {
+ //if error we leave
+ CloseDb();
+ User::LeaveIfError(error);
+ }
+ //data base begin
+ error = iSessionDb.Begin();
+ if( error!=KErrNone )
+ {
+ //if open fails function leaves
+ CloseDb();
+ User::LeaveIfError(error);
+ }
+
+ //! arrange the presets in incresing order of index
+ sessionlogtable.SetIndex(KSessionIndex);
+ sessionlogtable.Reset();
+ sessionlogtable.FirstL();
+ while(sessionlogtable.AtRow())
+ {
+ //deleting all the rows in the table
+ sessionlogtable.GetL();
+ sessionlogtable.DeleteL();
+ sessionlogtable.FirstL();
+ }
+ //saving the change
+ CleanupStack::PopAndDestroy(&sessionlogtable);
+ iSessionDb.Commit();
+ CloseDb();
+ IRLOG_DEBUG( "CIRSessionDb::DeleteAllSessionL - Exiting." );
+ }
+
+// ---------------------------------------------------------------------------
+// CIRSessionDb::ConstructL()
+// Standard 2nd phase construction
+// ---------------------------------------------------------------------------
+//
+void CIRSessionDb::ConstructL()
+ {
+ IRLOG_DEBUG( "CIRSessionDb::ConstructL" );
+ User::LeaveIfError(iFsSession.Connect());
+ IRLOG_DEBUG( "CIRSessionDb::ConstructL- Exiting." );
+ }
+
+// ---------------------------------------------------------------------------
+// CIRSessionDb::CloseDb()
+// Closes the database
+// ---------------------------------------------------------------------------
+//
+void CIRSessionDb::CloseDb()
+ {
+ IRLOG_DEBUG( "CIRSessionDb::CloseDb" );
+ iSessionDb.Close();
+ IRLOG_DEBUG( "CIRSessionDb::CloseDb - Exiting." );
+ }
+
+
+// ---------------------------------------------------------------------------
+// Function : CreateSessionTableL
+// creates sessionlogtable with two column one is sessionid and rest of session
+// log data
+// ---------------------------------------------------------------------------
+//SessionTable
+//---------------------------
+//| KID | KSessionLogCol |
+//---------------------------
+//|TInt32 | EDbColLongText8 |
+//---------------------------
+//
+void CIRSessionDb::CreateSessionTableL()
+ {
+ IRLOG_DEBUG( "CIRSessionDb::CreateSessionTableL" );
+ //start time of session
+ TDbCol sessionid(KID, EDbColInt32);
+ sessionid.iAttributes = TDbCol::ENotNull;
+
+ //!this column is used to store preset data
+ //!The column stores a potentially large amount of non-Unicode text data.
+ TDbCol sessionlogcol(KSessionLogCol, EDbColLongText8);
+ sessionlogcol.iAttributes = TDbCol::ENotNull;
+
+ CDbColSet* sessionlogcolset = CDbColSet::NewLC();
+ sessionlogcolset->AddL(sessionid);
+ sessionlogcolset->AddL(sessionlogcol);
+
+ // Create the sessionlog table with two columns
+
+ User::LeaveIfError(iSessionDb.CreateTable(KSessionTable,
+ *sessionlogcolset));
+
+ //Create the KeyIndex for the table
+ CreateSessionIndexL();
+ CleanupStack::PopAndDestroy(sessionlogcolset);
+ IRLOG_DEBUG( "CIRSessionDb::CreateSessionTableL - Exiting." );
+ }
+
+// ---------------------------------------------------------------------------
+// Function : CreateSessionIndexL
+// sets sessionid as the primary key
+// ---------------------------------------------------------------------------
+//
+void CIRSessionDb::CreateSessionIndexL()
+ {
+ IRLOG_DEBUG( "CIRSessionDb::CreateSessionIndexL" );
+ TDbKeyCol sessionid(KID);
+ CDbKey* index = CDbKey::NewLC();
+ index->AddL(sessionid);
+ User::LeaveIfError(iSessionDb.CreateIndex( KSessionIndex, KSessionTable,
+ *index));
+ CleanupStack::PopAndDestroy(index);
+ IRLOG_DEBUG( "CIRSessionDb::CreateSessionIndexL - Exiting." );
+ }
+
+// ---------------------------------------------------------------------------
+// CIRSessionDb::OpenDbL()
+// opening the data base
+// ---------------------------------------------------------------------------
+//
+ void CIRSessionDb::OpenDbL()
+ {
+ IRLOG_DEBUG( "CIRSessionDb::OpenDbL" );
+ CloseDb();
+ TInt error = KErrNone;
+ if( !BaflUtils::FileExists(iFsSession, iDbFile) )
+ {
+ //if file doesn't exist function leaves with error code
+ //KErrNotFound
+ error = KErrNotFound;
+ User::LeaveIfError(error);
+ }
+
+ error = iSessionDb.Open(iFsSession,iDbFile);
+ if( error!=KErrNone )
+ {
+ //if database is failed to open then
+ //function leaves
+ IRLOG_ERROR2( "CIRSessionDb::OpenDbL - Opening session database failed (%d)", error );
+ User::LeaveIfError(error);
+ }
+ if( iSessionDb.IsDamaged() || !iSessionDb.InTransaction() )
+ {
+ //if data base is damaged then
+ //it tried to recover
+ //if recovery is not possible function leaves
+ error = iSessionDb.Recover();
+ if ( KErrNone == error)
+ {
+ //if recovered data base is compacted
+ error = iSessionDb.Compact();
+ }
+ User::LeaveIfError(error);
+ }
+ IRLOG_DEBUG( "CIRSessionDb::OpenDbL - Exiting." );
+ }
+
+
+// ---------------------------------------------------------------------------
+// CIRSessionDb::CreateDbL()
+// Creates both the dbms files
+// calls CreateFavMasterTableL(),CreateFavUrlTableL
+// database filename
+// ---------------------------------------------------------------------------
+//
+ void CIRSessionDb::CreateDbL(TFileName& aSession)
+ {
+ IRLOG_DEBUG( "CIRSessionDb::CreateDbL" );
+ CloseDb();
+ TInt error = iSessionDb.Replace(iFsSession,aSession);
+ if ( error != KErrNone )
+ {
+ IRLOG_ERROR2( "CIRSessionDb::CreateDbL - Creating session database failed (%d)", error );
+ }
+ User::LeaveIfError(error);
+ CreateSessionTableL();
+ IRLOG_DEBUG( "CIRSessionDb::CreateDbL - Exiting." );
+ }
+
+
+
+
+
+
+
+
+
+