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/*
* Copyright (c) 2007-2009 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:
*
*/
/**
@file
@internalComponent
@released
*/
#ifndef __CNTSQLPROVIDER_H__
#define __CNTSQLPROVIDER_H__
#include "cntsqlprovider.h"
#include <e32cmn.h>
#include <e32base.h>
#include <badesca.h>
/**
Enumeration defining sql statement type.
@internalComponent
@released
*/
enum TCntSqlStatement
{
EInsert,
EUpdate,
EDelete,
ESelect
};
/**
Class used to build a sql statement class. It holds the statement type and the
database table against which sql statement is run
@internalComponent
@released
*/
NONSHARABLE_CLASS(TCntSqlStatementType)
{
public:
TCntSqlStatementType(TCntSqlStatement aSqlStatement, const TDesC& aTableName);
void SetSqlStatement(TCntSqlStatement aSqlStatement);
TCntSqlStatement SqlStatement() const;
const TDesC& TableName() const;
private:
TCntSqlStatement iSqlStatement;
const TDesC& iTableName;
};
/**
An abstract object representing a sql statement.
@internalComponent
@released
*/
NONSHARABLE_CLASS(CCntSqlStatement) : public CBase
{
public:
virtual TDesC& SqlStringL() = 0;
void SetParamL(const TDesC& aParam, const TDesC& aValue);
void SetConditionL(const TDesC& aCondition);
void ClearCondition();
TInt ParameterIndex(const TDesC& aParam) const;
void Reset();
void ClearParams();
~CCntSqlStatement();
// aTableName New table name, ownership is transferred
void SetTableName(HBufC* aTableName);
void ClearSqlString();
protected:
void ConstructL(const TDesC& aTableName);
protected:
HBufC* iTableName;
CDesCArrayFlat* iParams;
CDesCArrayFlat* iValues;
HBufC* iCondition;
HBufC* iSqlString;
TBool iProcessed;
};
/**
Concrete implementation for sql update statement.
@internalComponent
@released
*/
NONSHARABLE_CLASS(CCntSqlUpdate) : public CCntSqlStatement
{
public:
static CCntSqlUpdate* NewL(const TDesC& aTableName);
TDesC& SqlStringL();
};
/**
Concrete implementation for sql delete statement.
@internalComponent
@released
*/
NONSHARABLE_CLASS(CCntSqlDelete) : public CCntSqlStatement
{
public:
static CCntSqlDelete* NewL(const TDesC& aTableName);
TDesC& SqlStringL();
};
/**
Concrete implementation for sql insert statement.
@internalComponent
@released
*/
NONSHARABLE_CLASS(CCntSqlInsert) : public CCntSqlStatement
{
public:
static CCntSqlInsert* NewL(const TDesC& aTableName);
TDesC& SqlStringL();
};
/**
Concrete implementation for sql select statement.
@internalComponent
@released
*/
NONSHARABLE_CLASS(CCntSqlSelect) : public CCntSqlStatement
{
public:
static CCntSqlSelect* NewL(const TDesC& aTableName);
TDesC& SqlStringL();
};
/**
Factory class. Used to build CCntSqlStatement objects based on statement type provided
@internalComponent
@released
*/
NONSHARABLE_CLASS(TSqlProvider)
{
public:
static CCntSqlStatement* GetSqlStatementL(TCntSqlStatementType aStatementType);
};
#endif //__CNTSQLPROVIDER_H__
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