- /*
- * $Header: /home/cvs/jakarta-commons/dbutils/src/java/org/apache/commons/dbutils/ProxyFactory.java,v 1.3 2003/11/09 04:54:32 dgraham Exp $
- * $Revision: 1.3 $
- * $Date: 2003/11/09 04:54:32 $
- *
- * ====================================================================
- *
- * The Apache Software License, Version 1.1
- *
- * Copyright (c) 2003 The Apache Software Foundation. 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. The end-user documentation included with the redistribution, if
- * any, must include the following acknowledgement:
- * "This product includes software developed by the
- * Apache Software Foundation (http://www.apache.org/)."
- * Alternately, this acknowledgement may appear in the software itself,
- * if and wherever such third-party acknowledgements normally appear.
- *
- * 4. The names "The Jakarta Project", "Commons", and "Apache Software
- * Foundation" must not be used to endorse or promote products derived
- * from this software without prior written permission. For written
- * permission, please contact apache@apache.org.
- *
- * 5. Products derived from this software may not be called "Apache"
- * nor may "Apache" appear in their names without prior written
- * permission of the Apache Software Foundation.
- *
- * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED 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 THE APACHE SOFTWARE FOUNDATION 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.
- * ====================================================================
- *
- * This software consists of voluntary contributions made by many
- * individuals on behalf of the Apache Software Foundation. For more
- * information on the Apache Software Foundation, please see
- * <http://www.apache.org/>.
- *
- */
-
- package org.apache.commons.dbutils;
-
- import java.lang.reflect.InvocationHandler;
- import java.lang.reflect.Proxy;
- import java.sql.CallableStatement;
- import java.sql.Connection;
- import java.sql.Driver;
- import java.sql.PreparedStatement;
- import java.sql.ResultSet;
- import java.sql.ResultSetMetaData;
- import java.sql.Statement;
-
- /**
- * Creates proxy implementations of JDBC interfaces. This avoids
- * incompatibilities between the JDBC 2 and JDBC 3 interfaces. This class is
- * thread safe.
- *
- * @see java.lang.reflect.Proxy
- * @see java.lang.reflect.InvocationHandler
- *
- * @author David Graham
- */
- public class ProxyFactory {
-
- /**
- * Class[] for CallableStatement interface.
- */
- private static final Class[] callableStatementClass =
- new Class[] { CallableStatement.class };
-
- /**
- * Class[] for Connection interface.
- */
- private static final Class[] connectionClass =
- new Class[] { Connection.class };
-
- /**
- * Class[] for Driver interface.
- */
- private static final Class[] driverClass = new Class[] { Driver.class };
-
- /**
- * The Singleton instance of this class.
- */
- private static final ProxyFactory instance = new ProxyFactory();
-
- /**
- * Class[] for ResultSetMetaData interface.
- */
- private static final Class[] metaClass =
- new Class[] { ResultSetMetaData.class };
-
- /**
- * Class[] for PreparedStatement interface.
- */
- private static final Class[] preparedStatementClass =
- new Class[] { PreparedStatement.class };
-
- /**
- * Class[] for ResultSet interface.
- */
- private static final Class[] resultSetClass =
- new Class[] { ResultSet.class };
-
- /**
- * Class[] for Statement interface.
- */
- private static final Class[] statementClass =
- new Class[] { Statement.class };
-
- /**
- * Returns the Singleton instance of this class.
- */
- public static ProxyFactory instance() {
- return instance;
- }
-
- /**
- * Protected constructor for ProxyFactory subclasses to use.
- */
- protected ProxyFactory() {
- super();
- }
-
- /**
- * Creates a new proxy <code>CallableStatement</code> object.
- * @param handler The handler that intercepts/overrides method calls.
- */
- public CallableStatement createCallableStatement(InvocationHandler handler) {
- return (CallableStatement) Proxy.newProxyInstance(
- handler.getClass().getClassLoader(),
- callableStatementClass,
- handler);
- }
-
- /**
- * Creates a new proxy <code>Connection</code> object.
- * @param handler The handler that intercepts/overrides method calls.
- */
- public Connection createConnection(InvocationHandler handler) {
- return (Connection) Proxy.newProxyInstance(
- handler.getClass().getClassLoader(),
- connectionClass,
- handler);
- }
-
- /**
- * Creates a new proxy <code>Driver</code> object.
- * @param handler The handler that intercepts/overrides method calls.
- */
- public Driver createDriver(InvocationHandler handler) {
- return (Driver) Proxy.newProxyInstance(
- handler.getClass().getClassLoader(),
- driverClass,
- handler);
- }
-
- /**
- * Creates a new proxy <code>PreparedStatement</code> object.
- * @param handler The handler that intercepts/overrides method calls.
- */
- public PreparedStatement createPreparedStatement(InvocationHandler handler) {
- return (PreparedStatement) Proxy.newProxyInstance(
- handler.getClass().getClassLoader(),
- preparedStatementClass,
- handler);
- }
-
- /**
- * Creates a new proxy <code>ResultSet</code> object.
- * @param handler The handler that intercepts/overrides method calls.
- */
- public ResultSet createResultSet(InvocationHandler handler) {
- return (ResultSet) Proxy.newProxyInstance(
- handler.getClass().getClassLoader(),
- resultSetClass,
- handler);
- }
-
- /**
- * Creates a new proxy <code>ResultSetMetaData</code> object.
- * @param handler The handler that intercepts/overrides method calls.
- */
- public ResultSetMetaData createResultSetMetaData(InvocationHandler handler) {
- return (ResultSetMetaData) Proxy.newProxyInstance(
- handler.getClass().getClassLoader(),
- metaClass,
- handler);
- }
-
- /**
- * Creates a new proxy <code>Statement</code> object.
- * @param handler The handler that intercepts/overrides method calls.
- */
- public Statement createStatement(InvocationHandler handler) {
- return (Statement) Proxy.newProxyInstance(
- handler.getClass().getClassLoader(),
- statementClass,
- handler);
- }
-
- }