/*

 * Copyright (C) 2007 Apple Inc. All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions

 * are met:

 *

 * 1.  Redistributions of source code must retain the above copyright

 *     notice, this list of conditions and the following disclaimer.

 * 2.  Redistributions in binary form must reproduce the above copyright

 *     notice, this list of conditions and the following disclaimer in the

 *     documentation and/or other materials provided with the distribution.

 * 3.  Neither the name of Apple Computer, Inc. ("Apple") nor the names of

 *     its contributors may be used to endorse or promote products derived

 *     from this software without specific prior written permission.

 *

 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY

 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED

 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE

 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY

 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES

 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;

 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND

 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF

 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

 */

#ifndef SQLStatement_h

#define SQLStatement_h

#if ENABLE(DATABASE)

#include "PlatformString.h"

#include "SQLResultSet.h"

#include "SQLValue.h"

#include <wtf/Forward.h>

#include <wtf/Vector.h>

namespace WebCore {

class Database;

class SQLError;

class SQLStatementCallback;

class SQLStatementErrorCallback;

class SQLTransaction;

class SQLStatement : public ThreadSafeShared<SQLStatement> {

public:

    static PassRefPtr<SQLStatement> create(const String&, const Vector<SQLValue>&, PassRefPtr<SQLStatementCallback>, PassRefPtr<SQLStatementErrorCallback>, bool readOnly);

    bool execute(Database*);

    bool lastExecutionFailedDueToQuota() const;

    bool hasStatementCallback() const { return m_statementCallback; }

    bool hasStatementErrorCallback() const { return m_statementErrorCallback; }

    void setDatabaseDeletedError();

    void setVersionMismatchedError();

    bool performCallback(SQLTransaction*);

    SQLError* sqlError() const { return m_error.get(); }

private:

    SQLStatement(const String& statement, const Vector<SQLValue>& arguments, PassRefPtr<SQLStatementCallback>, PassRefPtr<SQLStatementErrorCallback>, bool readOnly);

    void setFailureDueToQuota();

    void clearFailureDueToQuota();

    String m_statement;

    Vector<SQLValue> m_arguments;

    RefPtr<SQLStatementCallback> m_statementCallback;

    RefPtr<SQLStatementErrorCallback> m_statementErrorCallback;

    RefPtr<SQLError> m_error;

    RefPtr<SQLResultSet> m_resultSet;

    bool m_readOnly;

};

} // namespace WebCore

#endif // ENABLE(DATABASE)

#endif // SQLStatement_h