| /* |
| * 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); |
| } |
| } |