org.springframework.jdbc.datasource.DelegatingDataSource Maven / Gradle / Ivy
/*
* Copyright 2002-2005 the original author or authors.
*
* 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.springframework.jdbc.datasource;
import java.io.PrintWriter;
import java.sql.Connection;
import java.sql.SQLException;
import javax.sql.DataSource;
import org.springframework.beans.factory.InitializingBean;
/**
* DataSource implementation that delegates all calls to a given target DataSource.
* Abstract because it is meant to be to be subclasses, overriding specific methods
* (such as getConnection()
that should not simply delegate to the target.
*
* @author Juergen Hoeller
* @since 1.1
* @see #getConnection()
* @see #getConnection(String, String)
*/
public abstract class DelegatingDataSource implements DataSource, InitializingBean {
private DataSource targetDataSource;
/**
* Set the target DataSource that this DataSource should delegate to.
*/
public void setTargetDataSource(DataSource targetDataSource) {
this.targetDataSource = targetDataSource;
}
/**
* Return the target DataSource that this DataSource should delegate to.
*/
public DataSource getTargetDataSource() {
return targetDataSource;
}
public void afterPropertiesSet() {
if (getTargetDataSource() == null) {
throw new IllegalArgumentException("targetDataSource is required");
}
}
public Connection getConnection() throws SQLException {
return getTargetDataSource().getConnection();
}
public Connection getConnection(String username, String password) throws SQLException {
return getTargetDataSource().getConnection(username, password);
}
public int getLoginTimeout() throws SQLException {
return getTargetDataSource().getLoginTimeout();
}
public void setLoginTimeout(int seconds) throws SQLException {
getTargetDataSource().setLoginTimeout(seconds);
}
public PrintWriter getLogWriter() throws SQLException {
return getTargetDataSource().getLogWriter();
}
public void setLogWriter(PrintWriter out) throws SQLException {
getTargetDataSource().setLogWriter(out);
}
}