landmarks/locationlandmarks/server/src/epos_poslmserverutility.cpp
changeset 0 667063e416a2
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/landmarks/locationlandmarks/server/src/epos_poslmserverutility.cpp	Tue Feb 02 01:06:48 2010 +0200
@@ -0,0 +1,121 @@
+/*
+* Copyright (c) 2002-2005 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: Landmarks Server's utilities
+*
+*
+*/
+
+
+#include "epos_landmarkdatabasestructure.h"
+#include "epos_cposlmlocaldbaccess.h"
+#include "epos_poslmserverutility.h"
+
+const TInt KIdIndexStartSize = 1100;
+const TInt KIdIndexGrowth = 9;
+
+// ================= MEMBER FUNCTIONS =======================
+
+// -----------------------------------------------------------------------------
+// -----------------------------------------------------------------------------
+//
+TInt PosLmServerUtility::EstimatedDiskSizeOfIndex(
+    TLmOperation aOperation,
+    TInt aCountOfRecords )
+    {
+    ASSERT( aOperation == ECreateFieldsLmIdIndex || aOperation == ECreateCategoriesLmIdIndex );
+
+    return KIdIndexStartSize + aCountOfRecords * KIdIndexGrowth;
+    }
+
+// -----------------------------------------------------------------------------
+// -----------------------------------------------------------------------------
+//
+TBool PosLmServerUtility::IndexExistsL(
+    const RDbNamedDatabase& aDatabase,
+    const TDesC& aTable,
+    const TDesC& aIndex )
+    {
+    TBool found( EFalse );
+    CDbIndexNames* indexes = aDatabase.IndexNamesL( aTable );
+    for ( TInt i = 0; i < indexes->Count(); ++i ) 
+        {
+        if ( (*indexes)[i].Compare( aIndex ) == 0 )
+            {
+            found = ETrue;
+            break;
+            }
+        }
+    delete indexes;
+    return found;
+    }
+
+// -----------------------------------------------------------------------------
+// -----------------------------------------------------------------------------
+//
+TUint PosLmServerUtility::GetTableRowCountL( 
+    CPosLmLocalDbAccess& aDbAccess,
+    const TDesC& aTableName )
+    {
+    RDbNamedDatabase db;
+    aDbAccess.GetDatabase( db );
+    
+    RDbTable table;
+    User::LeaveIfError( table.Open( db, aTableName, RDbRowSet::EReadOnly ) );
+    CleanupClosePushL( table );
+    TInt numRows = table.CountL();
+    CleanupStack::PopAndDestroy( &table );
+
+    if ( numRows < 0 )
+        {
+        User::Leave( KErrNotFound );
+        }
+    
+    return numRows;
+    }
+    
+// -----------------------------------------------------------------------------
+// -----------------------------------------------------------------------------
+//
+TUint PosLmServerUtility::TotalLandmarkCountL( CPosLmLocalDbAccess& aDbAccess )
+    {
+    return PosLmServerUtility::GetTableRowCountL( aDbAccess, KPosLmLandmarkTable );
+    }
+
+// -----------------------------------------------------------------------------
+// -----------------------------------------------------------------------------
+//
+HBufC* PosLmServerUtility::ReadFromLongTextColumnLC(
+    RDbRowSet& aView,
+    TDbColNo aCol )
+    {
+    TInt len = aView.ColLength( aCol );
+    if ( len > 0 )
+        {
+        HBufC* text = HBufC::NewLC( len );
+        TPtr ptr = text->Des();
+
+        RDbColReadStream readStream;
+        readStream.OpenL( aView, aCol );
+        CleanupClosePushL( readStream );
+        readStream.ReadL( ptr, len );
+        CleanupStack::PopAndDestroy( &readStream );
+
+        return text;
+        }
+    else
+        {
+        return KNullDesC().AllocLC();
+        }
+    }
+