/* | |
* Licensed to the Apache Software Foundation (ASF) under one | |
* or more contributor license agreements. See the NOTICE file | |
* distributed with this work for additional information | |
* regarding copyright ownership. The ASF licenses this file | |
* to you 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.apache.openjpa.slice.jdbc; | |
import java.io.PrintWriter; | |
import java.sql.Connection; | |
import java.sql.SQLException; | |
import java.util.ArrayList; | |
import java.util.Iterator; | |
import java.util.List; | |
import javax.sql.DataSource; | |
import javax.sql.XADataSource; | |
import org.apache.openjpa.lib.jdbc.DecoratingDataSource; | |
/** | |
* A virtual datasource that contains many physical datasources. | |
* | |
* @author Pinaki Poddar | |
* | |
*/ | |
class DistributedDataSource extends DecoratingDataSource implements | |
Iterable<DataSource> { | |
private List<DataSource> real = new ArrayList<DataSource>(); | |
private DataSource master; | |
public DistributedDataSource(List<DataSource> dataSources) { | |
super(dataSources.get(0)); | |
real = dataSources; | |
master = dataSources.get(0); | |
} | |
Connection getConnection(DataSource ds) throws SQLException { | |
if (ds instanceof DecoratingDataSource) | |
return getConnection(((DecoratingDataSource)ds).getInnermostDelegate()); | |
if (ds instanceof XADataSource) | |
return ((XADataSource)ds).getXAConnection().getConnection(); | |
return ds.getConnection(); | |
} | |
Connection getConnection(DataSource ds, String user, String pwd) throws SQLException { | |
if (ds instanceof DecoratingDataSource) | |
return getConnection(((DecoratingDataSource)ds).getInnermostDelegate(), user, pwd); | |
if (ds instanceof XADataSource) | |
return ((XADataSource)ds).getXAConnection(user, pwd).getConnection(); | |
return ds.getConnection(user, pwd); | |
} | |
public Iterator<DataSource> iterator() { | |
return real.iterator(); | |
} | |
public Connection getConnection() throws SQLException { | |
List<Connection> c = new ArrayList<Connection>(); | |
for (DataSource ds : real) | |
c.add(ds.getConnection()); | |
return new DistributedConnection(c); | |
} | |
public Connection getConnection(String username, String password) | |
throws SQLException { | |
List<Connection> c = new ArrayList<Connection>(); | |
for (DataSource ds : real) | |
c.add(ds.getConnection(username, password)); | |
return new DistributedConnection(c); | |
} | |
public PrintWriter getLogWriter() throws SQLException { | |
return master.getLogWriter(); | |
} | |
public int getLoginTimeout() throws SQLException { | |
return master.getLoginTimeout(); | |
} | |
public void setLogWriter(PrintWriter out) throws SQLException { | |
for (DataSource ds:real) | |
ds.setLogWriter(out); | |
} | |
public void setLoginTimeout(int seconds) throws SQLException { | |
for (DataSource ds:real) | |
ds.setLoginTimeout(seconds); | |
} | |
} |