com.mysql.jdbc.NoSubInterceptorWrapper Maven / Gradle / Ivy

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MySQL JDBC Type 4 driver
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/*
  Copyright (c) 2009, 2014, Oracle and/or its affiliates. All rights reserved.

  The MySQL Connector/J is licensed under the terms of the GPLv2
  , like most MySQL Connectors.
  There are special exceptions to the terms and conditions of the GPLv2 as it is applied to
  this software, see the FOSS License Exception
  .

  This program is free software; you can redistribute it and/or modify it under the terms
  of the GNU General Public License as published by the Free Software Foundation; version 2
  of the License.

  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 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.jdbc;

import java.sql.SQLException;
import java.util.Properties;

/**
 * Wraps statement interceptors during driver startup so that they don't produce different result sets than we expect.
 */
public class NoSubInterceptorWrapper implements StatementInterceptorV2 {

    private final StatementInterceptorV2 underlyingInterceptor;

    public NoSubInterceptorWrapper(StatementInterceptorV2 underlyingInterceptor) {
        if (underlyingInterceptor == null) {
            throw new RuntimeException("Interceptor to be wrapped can not be NULL");
        }

        this.underlyingInterceptor = underlyingInterceptor;
    }

    public void destroy() {
        this.underlyingInterceptor.destroy();
    }

    public boolean executeTopLevelOnly() {
        return this.underlyingInterceptor.executeTopLevelOnly();
    }

    public void init(Connection conn, Properties props) throws SQLException {
        this.underlyingInterceptor.init(conn, props);
    }

    public ResultSetInternalMethods postProcess(String sql, Statement interceptedStatement, ResultSetInternalMethods originalResultSet, Connection connection,
            int warningCount, boolean noIndexUsed, boolean noGoodIndexUsed, SQLException statementException) throws SQLException {
        this.underlyingInterceptor.postProcess(sql, interceptedStatement, originalResultSet, connection, warningCount, noIndexUsed, noGoodIndexUsed,
                statementException);

        return null; // don't allow result set substitution
    }

    public ResultSetInternalMethods preProcess(String sql, Statement interceptedStatement, Connection connection) throws SQLException {
        this.underlyingInterceptor.preProcess(sql, interceptedStatement, connection);

        return null; // don't allow result set substitution
    }

    public StatementInterceptorV2 getUnderlyingInterceptor() {
        return this.underlyingInterceptor;
    }
}