diff options
Diffstat (limited to 'sca-java-1.x/tags/1.3.2/modules/binding-jms/src/main/java/org/apache/tuscany/sca/binding/jms/provider/JMSResourceFactory.java')
-rw-r--r-- | sca-java-1.x/tags/1.3.2/modules/binding-jms/src/main/java/org/apache/tuscany/sca/binding/jms/provider/JMSResourceFactory.java | 175 |
1 files changed, 175 insertions, 0 deletions
diff --git a/sca-java-1.x/tags/1.3.2/modules/binding-jms/src/main/java/org/apache/tuscany/sca/binding/jms/provider/JMSResourceFactory.java b/sca-java-1.x/tags/1.3.2/modules/binding-jms/src/main/java/org/apache/tuscany/sca/binding/jms/provider/JMSResourceFactory.java new file mode 100644 index 0000000000..9b5e8e64b9 --- /dev/null +++ b/sca-java-1.x/tags/1.3.2/modules/binding-jms/src/main/java/org/apache/tuscany/sca/binding/jms/provider/JMSResourceFactory.java @@ -0,0 +1,175 @@ +/* + * 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.tuscany.sca.binding.jms.provider; + +import java.util.Properties; + +import javax.jms.Connection; +import javax.jms.ConnectionFactory; +import javax.jms.Destination; +import javax.jms.JMSException; +import javax.jms.Session; +import javax.naming.Context; +import javax.naming.InitialContext; +import javax.naming.NamingException; + +import org.apache.tuscany.sca.binding.jms.impl.JMSBindingException; + +/** + * Abstracts away any JMS provide specific feature from the JMS binding + * + * @version $Rev$ $Date$ + */ +public class JMSResourceFactory { + + private String initialContextFactoryName; + private String connectionFactoryName = "ConnectionFactory"; + private String jndiURL; + + private Connection connection; + private Context context; + private boolean isConnectionStarted; + + public JMSResourceFactory(String connectionFactoryName, String initialContextFactoryName, String jndiURL) { + if (connectionFactoryName != null && connectionFactoryName.trim().length() > 0) { + this.connectionFactoryName = connectionFactoryName.trim(); + } + if (initialContextFactoryName != null && initialContextFactoryName.trim().length() > 0) { + this.initialContextFactoryName = initialContextFactoryName.trim(); + } + if (jndiURL != null) { + this.jndiURL = jndiURL.trim(); + } + } + + /* + * This is a simple implementation where a connection is created per binding Ideally the resource factory should be + * able to leverage the host environment to provide connection pooling if it can. E.g. if Tuscany is running inside + * an AppServer Then we could leverage the JMS resources it provides + * + * @see org.apache.tuscany.binding.jms.JMSResourceFactory#getConnection() + */ + public Connection getConnection() throws NamingException, JMSException { + if (connection == null) { + createConnection(); + } + return connection; + } + + /* + * (non-Javadoc) + * + * @see org.apache.tuscany.binding.jms.JMSResourceFactory#createSession() + */ + public Session createSession() throws JMSException, NamingException { + return getConnection().createSession(false, Session.AUTO_ACKNOWLEDGE); + } + + /* + * (non-Javadoc) + * + * @see org.apache.tuscany.binding.jms.JMSResourceFactory#startConnection() + */ + public void startConnection() throws JMSException, NamingException { + if (!isConnectionStarted) { + getConnection().start(); + isConnectionStarted = true; + } + } + + /* + * (non-Javadoc) + * + * @see org.apache.tuscany.binding.jms.JMSResourceFactory#closeConnection() + */ + public void closeConnection() throws JMSException { + if (connection != null) { + connection.close(); + } + } + + private void createConnection() throws NamingException, JMSException { + ConnectionFactory connectionFactory = (ConnectionFactory)jndiLookUp(connectionFactoryName); + if (connectionFactory == null) { + throw new JMSBindingException("connection factory not found: " + connectionFactoryName); + } + connection = connectionFactory.createConnection(); + } + + private synchronized Context getInitialContext() throws NamingException { + if (context == null) { + Properties props = new Properties(); + + if (initialContextFactoryName != null) { + props.setProperty(Context.INITIAL_CONTEXT_FACTORY, initialContextFactoryName); + } + if (jndiURL != null) { + props.setProperty(Context.PROVIDER_URL, jndiURL); + } + + initJREEnvironment(props); + + context = new InitialContext(props); + } + return context; + } + + /** + * If using the WAS JMS Client with a non-IBM JRE then an additional + * environment property needs to be set to initialize the ORB correctly. + * See: http://www-1.ibm.com/support/docview.wss?uid=swg24012804 + */ + private void initJREEnvironment(Properties props) { + if ("com.ibm.websphere.naming.WsnInitialContextFactory".equals(props.get(Context.INITIAL_CONTEXT_FACTORY))) { + String vendor = System.getProperty("java.vendor"); + if (vendor == null || !vendor.contains("IBM")) { + props.setProperty("com.ibm.CORBA.ORBInit","com.ibm.ws.sib.client.ORB"); + } + } + } + + public Destination lookupDestination(String jndiName) throws NamingException { + return (Destination)jndiLookUp(jndiName); + } + + /** + * You can create a destination in ActiveMQ (and have it appear in JNDI) by putting "dynamicQueues/" in front of the + * queue name being looked up + */ + public Destination createDestination(String jndiName) throws NamingException { + return lookupDestination("dynamicQueues/" + jndiName); + } + + protected Object jndiLookUp(String name) { + Object o = null; + try { + o = getInitialContext().lookup("java:comp/env/" + name); + } catch (NamingException ex) { + // ignore + } + if (o == null) { + try { + o = getInitialContext().lookup(name); + } catch (NamingException ex) { + // ignore + } + } + return o; + } +} |