// Copyright (c) 2003-2009 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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 +
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#include "DbUndo.h"+
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+
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+
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// UNDO Class for Integers+
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void CDbUndoInt::ConstructL(const TDesC &aColumn, const TUint32 &aValue)+
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	{+
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	iColumn.Set(aColumn);+
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	iValue=aValue;+
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	}+
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+
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CDbUndoInt *CDbUndoInt::NewL(const TDesC &aColumn, const TUint32 &aValue)+
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	{+
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	CDbUndoInt *undo = new(ELeave) CDbUndoInt();+
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	CleanupStack::PushL(undo);+
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	undo->ConstructL(aColumn, aValue);+
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	CleanupStack::Pop();+
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	return undo;+
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	}+
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+
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void CDbUndoInt::UndoL(CDbAgtBase *aDb)+
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	{+
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	// Reset value in the table back to the values stored in this undo object+
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	aDb->ModifyColumnIntL(iColumn, iValue);+
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	}+
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+
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// UNDO Class for Booleans+
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void CDbUndoBool::ConstructL(const TDesC &aColumn, const TBool &aValue)+
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	{+
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	iColumn.Set(aColumn);+
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	iValue=aValue;+
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	}+
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+
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CDbUndoBool *CDbUndoBool::NewL(const TDesC &aColumn, const TBool &aValue)+
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	{+
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	CDbUndoBool *undo = new(ELeave) CDbUndoBool();+
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	CleanupStack::PushL(undo);+
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	undo->ConstructL(aColumn, aValue);+
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	CleanupStack::Pop();+
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	return undo;+
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	}+
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+
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void CDbUndoBool::UndoL(CDbAgtBase *aDb)+
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	{+
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	// Reset value in the table back to the values stored in this undo object+
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	aDb->ModifyColumnBoolL(iColumn, iValue);+
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	}+
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+
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// UNDO Class for text+
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void CDbUndoText::ConstructL(const TDesC &aColumn, const TDesC16& aValue)+
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	{+
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	iColumn.Set(aColumn);+
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	iText.Copy(aValue);+
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	}+
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+
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CDbUndoText *CDbUndoText::NewL(const TDesC &aColumn, const TDesC16& aValue)+
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	{+
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	CDbUndoText *undo = new(ELeave) CDbUndoText();+
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	CleanupStack::PushL(undo);+
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	undo->ConstructL(aColumn, aValue);+
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	CleanupStack::Pop();+
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	return undo;+
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	}+
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+
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void CDbUndoText::UndoL(CDbAgtBase *aDb)+
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	{+
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	// Reset text value in the table back to the text values stored in this undo object+
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	aDb->ModifyColumnTextL(iColumn, iText);+
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	}+
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+
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// UNDO Class for long text+
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void CDbUndoLongText::ConstructL(const TDesC &aColumn, const HBufC* aValue)+
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	{+
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	iColumn.Set(aColumn);+
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	// Save the long text from CommDB, allocate it!+
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	iLongText = aValue->AllocL();+
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	}+
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+
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CDbUndoLongText *CDbUndoLongText::NewL(const TDesC &aColumn, const HBufC* aValue)+
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	{+
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	CDbUndoLongText *undo = new(ELeave) CDbUndoLongText();+
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	CleanupStack::PushL(undo);+
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	undo->ConstructL(aColumn, aValue);+
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	CleanupStack::Pop();+
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	return undo;+
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	}+
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+
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void CDbUndoLongText::UndoL(CDbAgtBase *aDb)+
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	{+
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	// Reset text value in the table back to the text values stored in this undo object+
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	TPtr value(iLongText->Des());+
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	aDb->ModifyColumnLongTextL(iColumn, value);+
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	// Allocated in ConstructL, remeber to delete!+
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	delete iLongText;+
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	}+
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+
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// UNDO Class for Agent Extension name+
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void CDbUndoAgentExt::ConstructL(const TDesC &aService, const TDesC& aAgentExt)+
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	{+
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	iColumn.Set(aService);+
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	iText.Copy(aAgentExt);+
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	}+
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+
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CDbUndoAgentExt *CDbUndoAgentExt::NewL(const TDesC &aService, const TDesC& aAgentExt)+
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	{+
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	CDbUndoAgentExt *undo = new(ELeave) CDbUndoAgentExt();+
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	CleanupStack::PushL(undo);+
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	undo->ConstructL(aService, aAgentExt);+
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	CleanupStack::Pop();+
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	return undo;+
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	}+
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+
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void CDbUndoAgentExt::UndoL(CDbAgtBase* /*aDb*/)+
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	{+
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	}+
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+
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// Base class routines, used to open a CCommsDatabase and modify records+
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CDbAgtBase::CDbAgtBase() : iQHeader(_FOFF(CDbUndoBase,iLink)), iQIter(iQHeader)+
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	{+
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	}+
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+
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void CDbAgtBase::ConstructL()+
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	{+
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#ifdef SYMBIAN_NON_SEAMLESS_NETWORK_BEARER_MOBILITY+
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	iDb = CMDBSession::NewL(KCDVersion1_2);+
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#else+
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	iDb = CMDBSession::NewL(KCDVersion1_1);+
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#endif+
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	}+
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+
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CDbAgtBase::~CDbAgtBase()+
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	{+
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	delete iDb;+
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	}+
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+
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+
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void CDbAgtBase::SetColumnIntL(const TDesC &aColumn, const TUint32 &aValue)+
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	{+
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	// Used by a client to set a value in the database, also remembers the change+
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	// for undo purposes later+
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	+
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	TUint32 OldValue;+
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	CDbUndoInt *oldRecord;+
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+
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	// Get the current value in the table+
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	TInt ValType;+
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	CMDBField<TUint>* field = static_cast<CMDBField<TUint>*>(iTable->iRecords[iCurrentRecord]->GetFieldByNameL(aColumn, ValType));+
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	OldValue = *field;+
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+
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	// Add to the undo list+
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	oldRecord = CDbUndoInt::NewL(aColumn, OldValue);+
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	iQHeader.AddLast(*oldRecord);+
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+
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	// Change the record to the new value+
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	ModifyColumnIntL(aColumn, aValue);+
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	}+
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+
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+
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void CDbAgtBase::ModifyColumnIntL(const TDesC &aColumn, const TUint32 &aValue)+
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	{+
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	TInt ValType;+
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	CMDBField<TUint>* field = static_cast<CMDBField<TUint>*>(iTable->iRecords[iCurrentRecord]->GetFieldByNameL(aColumn, ValType));+
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	*field = aValue;+
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	field->ModifyL(*iDb);+
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	}+
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+
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void CDbAgtBase::SetColumnBoolL(const TDesC &aColumn, const TBool &aValue)+
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	{+
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	// Used by a client to set a value in the database, also remembers the change+
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	// for undo purposes later+
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	+
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	TBool OldValue;+
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	CDbUndoBool *oldRecord;+
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	+
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	// Get the current value in the table+
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	TInt ValType;+
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	CMDBField<TBool>* field = static_cast<CMDBField<TBool>*>(iTable->iRecords[iCurrentRecord]->GetFieldByNameL(aColumn, ValType));+
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	OldValue = static_cast<TBool>(*field);+
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+
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	// Add to the undo list+
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	oldRecord = CDbUndoBool::NewL(aColumn, OldValue);+
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	iQHeader.AddLast(*oldRecord);+
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+
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	// Change the record to the new value+
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	ModifyColumnBoolL(aColumn, aValue);+
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	}+
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+
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+
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void CDbAgtBase::ModifyColumnBoolL(const TDesC &aColumn, const TBool &aValue)+
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	{+
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	TInt ValType;+
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	CMDBField<TBool>* field = static_cast<CMDBField<TBool>*>(iTable->iRecords[iCurrentRecord]->GetFieldByNameL(aColumn, ValType));+
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	*field = aValue;+
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	field->ModifyL(*iDb);+
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	}+
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+
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void CDbAgtBase::SetColumnTextL(const TDesC &aColumn, const TDesC16& aValue)+
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	{+
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	// Used by a client to set a text value in the database, also remembers the change+
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	// for undo purposes later+
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	+
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	TBuf16<KCommsDbSvrMaxFieldLength> OldText;+
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	CDbUndoText *oldRecord;+
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+
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	// Get the current value in the table+
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	TInt ValType;+
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	CMDBField<TDesC>* field = static_cast<CMDBField<TDesC>*>(iTable->iRecords[iCurrentRecord]->GetFieldByNameL(aColumn, ValType));+
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	OldText = static_cast<TDesC>(*field);+
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+
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	// Add to the undo list+
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	oldRecord = CDbUndoText::NewL(aColumn, OldText);+
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	iQHeader.AddLast(*oldRecord);+
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+
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	// Change the record to the new value+
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	ModifyColumnTextL(aColumn, aValue);+
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	}+
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+
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void CDbAgtBase::ModifyColumnTextL(const TDesC &aColumn, const TDesC16& aValue)+
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	{+
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	TInt ValType;+
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	CMDBField<TDesC>* field = static_cast<CMDBField<TDesC>*>(iTable->iRecords[iCurrentRecord]->GetFieldByNameL(aColumn, ValType));+
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	*field = aValue;+
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	field->ModifyL(*iDb);+
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	}+
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+
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void CDbAgtBase::SetColumnLongTextL(const TDesC &aColumn, const TDesC16& aValue)+
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	{+
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	// Used by a client to set a long text value in the database, also remembers the change+
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	// for undo purposes later+
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	+
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	CDbUndoLongText *oldRecord;+
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+
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	// Get the current long text in the table, it is allocated in CommDB in ReadLongTextLC.+
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	// The method returns a pointer into HBufC.+
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	TInt ValType;+
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	CMDBField<TDesC>* field = static_cast<CMDBField<TDesC>*>(iTable->iRecords[iCurrentRecord]->GetFieldByNameL(aColumn, ValType));+
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	HBufC* OldLongText = HBufC::NewL(static_cast<TDesC>(*field).Length());+
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	CleanupStack::PushL(OldLongText);+
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	*OldLongText = *field;+
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+
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	// Add to the undo list+
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	oldRecord = CDbUndoLongText::NewL(aColumn, OldLongText);+
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	iQHeader.AddLast(*oldRecord);+
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+
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	// Allocated into CDbUndoLongText in ConstructL, and this one was created in CommDB so delete it!+
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	// this is pushed above so clean up properly+
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	CleanupStack::PopAndDestroy(OldLongText);+
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+
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	// Change the record to the new value+
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	ModifyColumnLongTextL(aColumn, aValue);+
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	}+
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+
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void CDbAgtBase::ModifyColumnLongTextL(const TDesC &aColumn, const TDesC16& aValue)+
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	{+
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	TInt ValType;+
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	CMDBField<TDesC>* field = static_cast<CMDBField<TDesC>*>(iTable->iRecords[iCurrentRecord]->GetFieldByNameL(aColumn, ValType));+
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	field->SetMaxLengthL(aValue.Length());+
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	*field = aValue;+
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	field->ModifyL(*iDb);+
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	}+
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+
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+
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void CDbAgtBase::UndoDatabaseChangesL()+
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	{+
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	CDbUndoBase* currentitem;+
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+
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	// Traverse back through the changes and reset database to the way it was+
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	iQIter.SetToLast();+
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+
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	while((currentitem = iQIter--) != NULL)+
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        {+
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        // reset the value of this record in the database+
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		currentitem->UndoL(this);+
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        currentitem->iLink.Deque();+
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        delete currentitem;+
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        };+
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	}+
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+
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+
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// GPRS OUTGOING TABLE access class+
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CDbGPRSOutgoingTable *CDbGPRSOutgoingTable::NewL()+
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	{+
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	CDbGPRSOutgoingTable *gprs = new(ELeave) CDbGPRSOutgoingTable();+
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	CleanupStack::PushL(gprs);+
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	gprs->ConstructL();+
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	CleanupStack::Pop();+
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	return gprs;+
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	}+
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+
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CDbGPRSOutgoingTable::CDbGPRSOutgoingTable()+
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	{+
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	}+
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+
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void CDbGPRSOutgoingTable::ConstructL()+
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	{+
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	CDbAgtBase::ConstructL();+
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	iTable = new CMDBRecordSet<CCDWCDMAPacketServiceRecord>(KCDTIdWCDMAPacketServiceRecord);+
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	iTable->LoadL(*iDb);+
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	iCurrentRecord = 0;+
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	}+
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+
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CDbGPRSOutgoingTable::~CDbGPRSOutgoingTable()+
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	{+
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	delete iTable;+
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	}+
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+
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// CSD DIAL OUT table class+
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CDbCsdTable *CDbCsdTable::NewL()+
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	{+
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	CDbCsdTable *csd = new(ELeave) CDbCsdTable();+
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	CleanupStack::PushL(csd);+
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	csd->ConstructL();+
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	CleanupStack::Pop();+
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	return csd;+
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	}+
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+
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CDbCsdTable::CDbCsdTable()+
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	{+
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	}+
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+
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void CDbCsdTable::ConstructL()+
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	{+
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	CDbAgtBase::ConstructL();+
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	iTable = new CMDBRecordSet<CCDDialOutISPRecord>(KCDTIdDialOutISPRecord);+
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	iTable->LoadL(*iDb);+
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	iCurrentRecord = 0;+
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	}+
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+
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CDbCsdTable::~CDbCsdTable()+
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	{+
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	delete iTable;+
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	}+
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+
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+
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// MODEM table class+
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CDbModemTable *CDbModemTable::NewL()+
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	{+
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	CDbModemTable *modem = new(ELeave) CDbModemTable();+
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	CleanupStack::PushL(modem);+
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	modem->ConstructL();+
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	CleanupStack::Pop();+
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	return modem;+
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	}+
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+
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CDbModemTable::CDbModemTable()+
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	{+
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	}+
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+
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void CDbModemTable::ConstructL()+
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	{+
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	CDbAgtBase::ConstructL();+
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	iTable = new CMDBRecordSet<CCDModemBearerRecord>(KCDTIdModemBearerRecord);+
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	iTable->LoadL(*iDb);+
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	iCurrentRecord = 0;+
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	}+
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+
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CMDBRecordSetBase*CDbCsdTable::Table()+
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	{+
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	return(iTable);+
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	}+
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CDbModemTable::~CDbModemTable()+
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	{+
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	delete iTable;+
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	}+
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