com.mysql.cj.jdbc.ha.LoadBalancedMySQLConnection Maven / Gradle / Ivy

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JDBC Type 4 driver for MySQL
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/*
 * Copyright (c) 2007, 2020, Oracle and/or its affiliates.
 *
 * 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.ha;

import java.sql.SQLException;

import com.mysql.cj.Messages;
import com.mysql.cj.exceptions.MysqlErrorNumbers;
import com.mysql.cj.jdbc.exceptions.SQLError;

public class LoadBalancedMySQLConnection extends MultiHostMySQLConnection implements LoadBalancedConnection {
    public LoadBalancedMySQLConnection(LoadBalancedConnectionProxy proxy) {
        super(proxy);
    }

    @Override
    public LoadBalancedConnectionProxy getThisAsProxy() {
        return (LoadBalancedConnectionProxy) super.getThisAsProxy();
    }

    @Override
    public void close() throws SQLException {
        getThisAsProxy().doClose();
    }

    @Override
    public void ping() throws SQLException {
        ping(true);
    }

    @Override
    public void ping(boolean allConnections) throws SQLException {
        if (allConnections) {
            getThisAsProxy().doPing();
        } else {
            getActiveMySQLConnection().ping();
        }
    }

    @Override
    public boolean addHost(String host) throws SQLException {
        return getThisAsProxy().addHost(host);
    }

    @Override
    public void removeHost(String host) throws SQLException {
        getThisAsProxy().removeHost(host);
    }

    @Override
    public void removeHostWhenNotInUse(String host) throws SQLException {
        getThisAsProxy().removeHostWhenNotInUse(host);
    }

    @Override
    public boolean isWrapperFor(Class iface) throws SQLException {
        // This works for classes that aren't actually wrapping anything
        return iface.isInstance(this);
    }

    @Override
    public  T unwrap(java.lang.Class iface) throws java.sql.SQLException {
        try {
            // This works for classes that aren't actually wrapping anything
            return iface.cast(this);
        } catch (ClassCastException cce) {
            throw SQLError.createSQLException(Messages.getString("Common.UnableToUnwrap", new Object[] { iface.toString() }),
                    MysqlErrorNumbers.SQL_STATE_ILLEGAL_ARGUMENT, getExceptionInterceptor());
        }
    }
}