/*

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

 * Copyright (C) 2010 Google 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.

 */

#include "config.h"

#include "SQLStatementSync.h"

#if ENABLE(DATABASE)

#include "DatabaseSync.h"

#include "SQLException.h"

#include "SQLResultSet.h"

#include "SQLValue.h"

#include "SQLiteDatabase.h"

#include "SQLiteStatement.h"

#include <wtf/PassRefPtr.h>

#include <wtf/RefPtr.h>

namespace WebCore {

SQLStatementSync::SQLStatementSync(const String& statement, const Vector<SQLValue>& arguments, bool readOnly)

    : m_statement(statement)

    , m_arguments(arguments)

    , m_readOnly(readOnly)

{

    ASSERT(!m_statement.isEmpty());

}

PassRefPtr<SQLResultSet> SQLStatementSync::execute(DatabaseSync* db, ExceptionCode& ec)

{

    if (m_readOnly)

        db->setAuthorizerReadOnly();

    SQLiteDatabase* database = &db->sqliteDatabase();

    SQLiteStatement statement(*database, m_statement);

    int result = statement.prepare();

    if (result != SQLResultOk) {

        ec = SQLException::SYNTAX_ERR;

        return 0;

    }

    if (statement.bindParameterCount() != m_arguments.size()) {

        ec = SQLException::SYNTAX_ERR;

        return 0;

    }

    for (unsigned i = 0; i < m_arguments.size(); ++i) {

        result = statement.bindValue(i + 1, m_arguments[i]);

        if (result == SQLResultFull) {

            ec = SQLException::QUOTA_ERR;

            return 0;

        }

        if (result != SQLResultOk) {

            ec = SQLException::DATABASE_ERR;

            return 0;

        }

    }

    RefPtr<SQLResultSet> resultSet = SQLResultSet::create();

    // Step so we can fetch the column names.

    result = statement.step();

    if (result == SQLResultRow) {

        int columnCount = statement.columnCount();

        SQLResultSetRowList* rows = resultSet->rows();

        for (int i = 0; i < columnCount; i++)

            rows->addColumn(statement.getColumnName(i));

        do {

            for (int i = 0; i < columnCount; i++)

                rows->addResult(statement.getColumnValue(i));

            result = statement.step();

        } while (result == SQLResultRow);

        if (result != SQLResultDone) {

            ec = SQLException::DATABASE_ERR;

            return 0;

        }

    } else if (result == SQLResultDone) {

        // Didn't find anything, or was an insert.

        if (db->lastActionWasInsert())

            resultSet->setInsertId(database->lastInsertRowID());

    } else if (result == SQLResultFull) {

        // Quota error, the delegate will be asked for more space and this statement might be re-run.

        ec = SQLException::QUOTA_ERR;

        return 0;

    } else {

        ec = SQLException::DATABASE_ERR;

        return 0;

    }

    resultSet->setRowsAffected(database->lastChanges());

    return resultSet.release();

}

} // namespace WebCore

#endif // ENABLE(DATABASE)