| /* |
| * 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.cocoon.ojb.components; |
| |
| import org.apache.avalon.excalibur.datasource.DataSourceComponent; |
| import org.apache.avalon.framework.CascadingRuntimeException; |
| import org.apache.avalon.framework.activity.Disposable; |
| import org.apache.avalon.framework.component.Component; |
| import org.apache.avalon.framework.service.ServiceException; |
| import org.apache.avalon.framework.service.ServiceManager; |
| import org.apache.avalon.framework.service.ServiceSelector; |
| import org.apache.avalon.framework.service.Serviceable; |
| import org.apache.avalon.framework.thread.ThreadSafe; |
| |
| import org.apache.ojb.broker.accesslayer.ConnectionFactory; |
| import org.apache.ojb.broker.accesslayer.LookupException; |
| import org.apache.ojb.broker.metadata.JdbcConnectionDescriptor; |
| |
| import java.sql.Connection; |
| import java.sql.SQLException; |
| |
| /** |
| * OJB ConnectionFactory implemenation to bridge into the Avalon DataSource |
| * connection pooling component defined in the Cocoon configuration. |
| * |
| * <p>This class has two faces to it: |
| * <dl> |
| * <dt>Avalon Component</dt> |
| * <dd>Instance of the class created and managed by Avalon container. |
| * When instance is initialized, it looks up datasource components |
| * service selector.</dd> |
| * <dt>OJB Managed Class</dt> |
| * <dd>Instances of the class are created and managed by OJB, as defined |
| * in the OJB <code>repository.xml</code> file. Each OJB managed instance |
| * of the class will have access to the datasource components service |
| * selector initialized by Avalon managed instance of the class.</dd> |
| * </dl> |
| * |
| * It is important that Avalon component is initialized before any access |
| * to OJB API is made.</p> |
| * |
| * @author giacomo at apache.org |
| * @author <a href="mailto:vgritsenko@apache.org">Vadim Gritsenko</a> |
| * @version $Id$ |
| */ |
| public class ConnectionFactoryImpl implements Component, ThreadSafe, Serviceable, Disposable, |
| ConnectionFactory { |
| |
| /** The <code>ServiceManager</code> to be used */ |
| private static ServiceManager manager; |
| |
| /** The <code>ServiceSelector</code> to be used */ |
| private static ServiceSelector datasources; |
| |
| /** The <code>JdbcConnectionDescriptor</code> */ |
| private JdbcConnectionDescriptor conDesc; |
| |
| /** |
| * Default constructor |
| */ |
| public ConnectionFactoryImpl() { |
| } |
| |
| /** |
| * OJB 1.1 constructor |
| */ |
| public ConnectionFactoryImpl(JdbcConnectionDescriptor conDesc) { |
| this.conDesc = conDesc; |
| } |
| |
| public void service(ServiceManager manager) throws ServiceException { |
| ConnectionFactoryImpl.manager = manager; |
| ConnectionFactoryImpl.datasources = (ServiceSelector) manager.lookup(DataSourceComponent.ROLE + "Selector"); |
| } |
| |
| public void dispose() { |
| if (ConnectionFactoryImpl.manager != null) { |
| ConnectionFactoryImpl.manager.release(ConnectionFactoryImpl.datasources); |
| ConnectionFactoryImpl.datasources = null; |
| ConnectionFactoryImpl.manager = null; |
| } |
| } |
| |
| // |
| // OJB 1.1 ConnectionFactory Implementation |
| // |
| |
| public Connection lookupConnection() |
| throws LookupException { |
| return lookupConnection(this.conDesc); |
| } |
| |
| public void releaseConnection(Connection connection) { |
| releaseConnection(this.conDesc, connection); |
| } |
| |
| public int getActiveConnections() { |
| return 0; |
| } |
| |
| public int getIdleConnections() { |
| return 0; |
| } |
| |
| // |
| // OJB 1.0 ConnectionFactory Implementation |
| // |
| |
| public Connection lookupConnection(final JdbcConnectionDescriptor conDesc) |
| throws LookupException { |
| if (ConnectionFactoryImpl.manager == null) { |
| throw new LookupException("ConnectionFactoryImpl is not initialized! Please check your cocoon.xconf"); |
| } |
| |
| try { |
| return ((DataSourceComponent) ConnectionFactoryImpl.datasources.select(conDesc.getJcdAlias())).getConnection(); |
| } catch (final ServiceException e) { |
| throw new LookupException("Cannot lookup DataSource " + |
| conDesc.getJcdAlias(), e); |
| } catch (final SQLException e) { |
| throw new LookupException("Cannot get connection from DataSource " + |
| conDesc.getJcdAlias(), e); |
| } |
| } |
| |
| public void releaseConnection(JdbcConnectionDescriptor conDesc, Connection connection) { |
| try { |
| // The DataSource of this connection will take care of pooling |
| connection.close(); |
| } catch (final SQLException e) { |
| // This should not happen, but in case |
| throw new CascadingRuntimeException("Cannot release SQL Connection to DataSource", e); |
| } |
| } |
| |
| public void releaseAllResources() { |
| // Nothing to do here |
| } |
| } |