/*
 * Copyright (c) 2002, 2018, Oracle and/or its affiliates. All rights reserved.
 *
 * This program is free software; you can redistribute it and/or modify it under
 * the terms of the GNU General Public License, version 2.0, as published by the
 * Free Software Foundation.
 *
 * This program is also distributed with certain software (including but not
 * limited to OpenSSL) that is licensed under separate terms, as designated in a
 * particular file or component or in included license documentation. The
 * authors of MySQL hereby grant you an additional permission to link the
 * program and your derivative works with the separately licensed software that
 * they have included with MySQL.
 *
 * Without limiting anything contained in the foregoing, this file, which is
 * part of MySQL Connector/J, is also subject to the Universal FOSS Exception,
 * version 1.0, a copy of which can be found at
 * http://oss.oracle.com/licenses/universal-foss-exception.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE. See the GNU General Public License, version 2.0,
 * for more details.
 *
 * You should have received a copy of the GNU General Public License along with
 * this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301  USA
 */

package com.mysql.cj.jdbc;

import java.sql.SQLException;
import java.sql.Savepoint;

import com.mysql.cj.Messages;
import com.mysql.cj.exceptions.ExceptionInterceptor;
import com.mysql.cj.exceptions.MysqlErrorNumbers;
import com.mysql.cj.jdbc.exceptions.SQLError;
import com.mysql.cj.util.StringUtils;

/**
 * Represents SQL SAVEPOINTS in MySQL.
 */
public class MysqlSavepoint implements Savepoint {

    private String savepointName;

    private ExceptionInterceptor exceptionInterceptor;

    /**
     * Creates an unnamed savepoint.
     * 
     * @param conn
     * 
     * @throws SQLException
     *             if an error occurs
     */
    MysqlSavepoint(ExceptionInterceptor exceptionInterceptor) throws SQLException {
        this(StringUtils.getUniqueSavepointId(), exceptionInterceptor);
    }

    /**
     * Creates a named savepoint
     * 
     * @param name
     *            the name of the savepoint.
     * 
     * @throws SQLException
     *             if name == null or is empty.
     */
    MysqlSavepoint(String name, ExceptionInterceptor exceptionInterceptor) throws SQLException {
        if (name == null || name.length() == 0) {
            throw SQLError.createSQLException(Messages.getString("MysqlSavepoint.0"), MysqlErrorNumbers.SQL_STATE_ILLEGAL_ARGUMENT, exceptionInterceptor);
        }

        this.savepointName = name;

        this.exceptionInterceptor = exceptionInterceptor;
    }

    /**
     * @see java.sql.Savepoint#getSavepointId()
     */
    public int getSavepointId() throws SQLException {
        throw SQLError.createSQLException(Messages.getString("MysqlSavepoint.1"), MysqlErrorNumbers.SQL_STATE_DRIVER_NOT_CAPABLE, this.exceptionInterceptor);
    }

    /**
     * @see java.sql.Savepoint#getSavepointName()
     */
    public String getSavepointName() throws SQLException {
        return this.savepointName;
    }
}