/*
* Copyright 2006 Ralf Joachim
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.castor.cpa.persistence.sql.connection;
import java.lang.reflect.InvocationHandler;
import java.lang.reflect.Proxy;
import java.sql.CallableStatement;
import java.sql.Connection;
import java.sql.PreparedStatement;
/**
* Factory class for proxies for JDBC Connection, PreparedStatement and CallableStatement
* classes. The proxies allow to gather information for the purpose of SQL statement
* logging.
*
* @author <a href="mailto:ralf DOT joachim AT syscon DOT eu">Ralf Joachim</a>
* @version $Revision: 5951 $ $Date$
* @since 1.0.4
*/
public final class ConnectionProxyFactory {
//--------------------------------------------------------------------------
/**
* Factory method for creating a ConnectionProxy.
*
* @param connection The JDBC connection to proxy.
* @param calledBy Name of the class using creating and this proxy class.
* @return The JDBC connection proxy.
*/
public static Connection newConnectionProxy(
final Connection connection, final String calledBy) {
ClassLoader loader = connection.getClass().getClassLoader();
Class<?>[] interfaces = new Class<?>[] {Connection.class};
InvocationHandler handler = new ConnectionProxy(connection, calledBy);
return (Connection) Proxy.newProxyInstance(loader, interfaces, handler);
}
/**
* Factory method for creating a PreparedStamentProxy.
*
* @param statement Prepared statement to be proxied.
* @param sql SQL string.
* @return Prepared statement proxy.
*/
protected static PreparedStatement newPreparedStatementProxy(
final PreparedStatement statement, final String sql) {
ClassLoader loader = statement.getClass().getClassLoader();
Class<?>[] interfaces = new Class<?>[] {PreparedStatement.class};
InvocationHandler handler = new PreparedStatementProxy(statement, sql);
return (PreparedStatement) Proxy.newProxyInstance(loader, interfaces, handler);
}
/**
* Factory method for creating a CallableStamentProxy.
*
* @param statement Callable statement to be proxied.
* @param sql SQL string.
* @return Callable statement proxy.
*/
protected static CallableStatement newCallableStatementProxy(
final CallableStatement statement, final String sql) {
ClassLoader loader = statement.getClass().getClassLoader();
Class<?>[] interfaces = new Class<?>[] {CallableStatement.class};
InvocationHandler handler = new CallableStatementProxy(statement, sql);
return (CallableStatement) Proxy.newProxyInstance(loader, interfaces, handler);
}
//--------------------------------------------------------------------------
/**
* Hide utility class constructor.
*/
private ConnectionProxyFactory() { }
//--------------------------------------------------------------------------
}