--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/wvuing/wvuistorage/src/CCAStorage.cpp	Thu Dec 17 08:41:52 2009 +0200
@@ -0,0 +1,303 @@
+/*
+* Copyright (c) 2003-2005 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:  Takes care of persistent storaging
+*
+*/
+
+
+// INCLUDE FILES
+
+#include <f32file.h>
+#include <sysutil.h>
+
+#include "ChatDebugPrint.h"
+
+#include "CCAStorage.h"
+#include "MCAExtendedStoredGroup.h"
+
+#include "CCAStorageDefs.h"
+
+// Database overhead
+const TInt KDbOverhead = 32;
+const TInt KEmptyDbSize = 1024;
+
+// ================= MEMBER FUNCTIONS =======================
+
+// constructor
+CCAStorage::CCAStorage()
+    {
+    }
+
+// destructor
+CCAStorage::~CCAStorage()
+    {
+    delete iGroupStorage;
+    CloseDb();
+    iFs.Close();
+    }
+
+// -----------------------------------------------------------
+// CCAStorage::NewL
+// -----------------------------------------------------------
+//
+CCAStorage* CCAStorage::NewL()
+    {
+    CCAStorage* self = new ( ELeave ) CCAStorage();
+    CleanupStack::PushL( self );
+    self->ConstructL();
+    CleanupStack::Pop( self );
+    return self;
+    }
+
+// -----------------------------------------------------------
+// CCAStorage::LoadL
+// -----------------------------------------------------------
+//
+void CCAStorage::LoadL( MCAExtendedStoredGroup* aGroup )
+    {
+    iGroupStorage->ReadGroupL( aGroup );
+    }
+
+// -----------------------------------------------------------
+// CCAStorage::SaveL
+// -----------------------------------------------------------
+//
+void CCAStorage::SaveL( MCAExtendedStoredGroup* aGroup )
+    {
+    CheckFreespaceLevelL( aGroup );
+    iGroupStorage->WriteGroupL( aGroup );
+    iDb.Compact();
+    }
+
+// -----------------------------------------------------------
+// CCAStorage::DeleteL
+// -----------------------------------------------------------
+//
+void CCAStorage::DeleteL( MCAExtendedStoredGroup* aGroup )
+    {
+    CHAT_DP_FUNC_ENTER( "DeleteL" );
+
+    if ( ! aGroup )
+        {
+        CHAT_DP_FUNC_DP( "DeleteL", "Group is NULL!" );
+        return; // can't do anything!
+        }
+
+    if ( ! iGroupStorage )
+        {
+        CHAT_DP_FUNC_DP( "DeleteL", "Group storage is NULL!" );
+        return; // can't do anything!
+        }
+
+    iGroupStorage->DeleteGroupL( aGroup );
+    iDb.Compact();
+
+    CHAT_DP_FUNC_DONE( "DeleteL" );
+    }
+
+// -----------------------------------------------------------
+// CCAStorage::LoadFirstL
+// -----------------------------------------------------------
+//
+TInt CCAStorage::LoadFirstL( MCAExtendedStoredGroup* aGroup )
+    {
+    return iGroupStorage->ReadFirstL( aGroup );
+    }
+
+// -----------------------------------------------------------
+// CCAStorage::LoadNextL
+// -----------------------------------------------------------
+//
+TInt CCAStorage::LoadNextL( MCAExtendedStoredGroup* aGroup )
+    {
+    return iGroupStorage->ReadNextL( aGroup );
+    }
+
+// -----------------------------------------------------------
+// CCAStorage::DbExists
+// -----------------------------------------------------------
+//
+TBool CCAStorage::DbExists()
+    {
+    RFile temp;
+
+    TBuf< KMaxPath > storagePath;
+    iFs.PrivatePath( storagePath );
+    storagePath.Append( KStorageName );
+
+    TInt err( temp.Open( iFs, *( &storagePath ), EFileRead ) );
+
+    TInt size( 0 );
+    if ( err == KErrNone )
+        {
+        temp.Size( size );
+        }
+
+    temp.Close();
+
+    if ( size == 0 )
+        {
+        return EFalse;
+        }
+
+    return ( err == KErrNone );
+    }
+
+// -----------------------------------------------------------
+// CCAStorage::CreateDbL
+// -----------------------------------------------------------
+//
+void CCAStorage::CreateDbL()
+    {
+    TBuf< KMaxPath > storagePath;
+    iFs.PrivatePath( storagePath );
+    iFs.MkDirAll( storagePath );    // make sure the directory exists
+
+    storagePath.Append( KStorageName );
+    iFileStore = CPermanentFileStore::ReplaceL( iFs, storagePath, EFileWrite );
+
+    iFileStore->SetTypeL( iFileStore->Layout() );
+
+    TStreamId streamId( 0 );
+    TRAPD( err, streamId = iDb.CreateL( iFileStore ) );
+
+    if ( err )
+        {
+        delete iFileStore;
+        iFileStore = NULL;
+
+        // remember to keep this updated
+        iFs.Delete( storagePath );
+        User::Leave( err );
+        }
+
+    iFileStore->SetRootL( streamId );
+    TInt err2( iFileStore->Commit() );
+    User::LeaveIfError( err2 );
+
+    TRAPD( err3, CreateTablesL() );
+    if ( err3 )
+        {
+        delete iFileStore;
+        iFileStore = NULL;
+        iDb.Close();
+        iFs.Delete( storagePath );
+        User::Leave( err3 );
+        }
+    }
+
+// -----------------------------------------------------------
+// CCAStorage::OpenDbL
+// -----------------------------------------------------------
+//
+void CCAStorage::OpenDbL()
+    {
+    TBuf< KMaxPath > storagePath;
+    iFs.PrivatePath( storagePath );
+    storagePath.Append( KStorageName );
+
+    iFileStore = CPermanentFileStore::OpenL( iFs, storagePath, EFileWrite );
+    iFileStore->SetTypeL( iFileStore->Layout() );
+    iDb.OpenL( iFileStore, iFileStore->Root() );
+    }
+
+// -----------------------------------------------------------
+// CCAStorage::CloseDb
+// -----------------------------------------------------------
+//
+void CCAStorage::CloseDb()
+    {
+    delete iFileStore;
+    iFileStore = NULL;
+    iDb.Close();
+    }
+
+// -----------------------------------------------------------
+// CCAStorage::CreateTablesL
+// -----------------------------------------------------------
+//
+void CCAStorage::CreateTablesL()
+    {
+    CDbColSet* groups = CDbColSet::NewLC();
+
+    AddColumnL( KGroupId, EDbColText, groups, KDbUndefinedLength );
+    AddColumnL( KGroupData, EDbColLongBinary, groups );
+    AddColumnL( KGroupDataSize, EDbColInt32, groups );
+
+    TInt err = iDb.CreateTable( KGroupTable, *groups );
+    User::LeaveIfError( err );
+
+    CleanupStack::PopAndDestroy( groups );	// groups
+    }
+
+// -----------------------------------------------------------
+// CCAStorage::AddColumnL
+// -----------------------------------------------------------
+//
+void CCAStorage::AddColumnL( const TDesC& aName, TDbColType aType,
+                             CDbColSet* aColset, TInt aMaxLength /* =0 */ )
+    {
+    TDbCol column( aName, aType );
+    if ( aMaxLength != 0 )
+        {
+        column.iMaxLength = aMaxLength;
+        }
+    aColset->AddL( column );
+    }
+
+// -----------------------------------------------------------
+// CCAStorage::CheckFreespaceLeveL
+// -----------------------------------------------------------
+//
+void CCAStorage::CheckFreespaceLevelL( MCAExtendedStoredGroup* aGroup )
+    {
+    DoFreespaceLevelCheckL( aGroup->MaximalSize() + KDbOverhead );
+    }
+
+// -----------------------------------------------------------
+// CCAStorage::DoFreespaceLevelCheckL
+// -----------------------------------------------------------
+//
+void CCAStorage::DoFreespaceLevelCheckL( TInt aSize )
+    {
+    if ( SysUtil::FFSSpaceBelowCriticalLevelL( &iFs, aSize ) )
+        {
+        User::Leave( KErrDiskFull );
+        }
+    }
+
+// -----------------------------------------------------------
+// CCAStorage::ConstructL
+// -----------------------------------------------------------
+//
+void CCAStorage::ConstructL()
+    {
+    User::LeaveIfError( iFs.Connect() );
+
+    iGroupStorage = CCAGroupStorage::NewL();
+
+    // Open existing or create new database.
+    if ( DbExists() )
+        {
+        OpenDbL();
+        }
+    else
+        {
+        DoFreespaceLevelCheckL( KEmptyDbSize );
+        CreateDbL();
+        }
+    iGroupStorage->SetDbL( iDb );
+    }
+
+//  End of File