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Diffstat (limited to '')
-rw-r--r-- | sca-java-2.x/tags/2.0-Beta4-RC1/modules/binding-jms-runtime-activemq/src/main/java/org/apache/tuscany/sca/binding/jms/runtime/activemq/ActiveMQJMSResourceFactory.java | 113 |
1 files changed, 113 insertions, 0 deletions
diff --git a/sca-java-2.x/tags/2.0-Beta4-RC1/modules/binding-jms-runtime-activemq/src/main/java/org/apache/tuscany/sca/binding/jms/runtime/activemq/ActiveMQJMSResourceFactory.java b/sca-java-2.x/tags/2.0-Beta4-RC1/modules/binding-jms-runtime-activemq/src/main/java/org/apache/tuscany/sca/binding/jms/runtime/activemq/ActiveMQJMSResourceFactory.java new file mode 100644 index 0000000000..f8c06058a0 --- /dev/null +++ b/sca-java-2.x/tags/2.0-Beta4-RC1/modules/binding-jms-runtime-activemq/src/main/java/org/apache/tuscany/sca/binding/jms/runtime/activemq/ActiveMQJMSResourceFactory.java @@ -0,0 +1,113 @@ +/* + * 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.runtime.activemq; + +import java.util.Properties; + +import javax.naming.Context; +import javax.naming.InitialContext; +import javax.naming.NamingException; + +import org.apache.activemq.jndi.ActiveMQInitialContextFactory; +import org.apache.tuscany.sca.binding.jms.provider.JMSResourceFactoryImpl; +import org.apache.tuscany.sca.extensibility.ClassLoaderContext; + +public class ActiveMQJMSResourceFactory extends JMSResourceFactoryImpl { + + public ActiveMQJMSResourceFactory(String connectionFactoryName, + String responseConnectionFactoryName, + String initialContextFactoryName, + String jndiURL) { + super(connectionFactoryName, responseConnectionFactoryName, initialContextFactoryName, jndiURL); + } + + protected 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); + + try { + // Load the JNDI InitialContext (will load the InitialContextFactory, if present) + context = new InitialContext(props); + if( context == null ) { + throw new NamingException(); + } else if ( context.getEnvironment().get(InitialContext.INITIAL_CONTEXT_FACTORY) == null ) { + throw new NamingException(); + } // end if + } catch (NamingException e ) { + context = getInitialContextOsgi( props ); + } // end try + // In the case where the InitialContext fails, check whether performing an OSGi based load succeeds... + + + } + return context; + } // end method getInitialContext + + static final String ACTIVEMQ_FACTORY = "org.apache.activemq.jndi.ActiveMQInitialContextFactory"; + private Context getInitialContextOsgi( Properties props ) throws NamingException { + /** + * For OSGi, need to provide access to the InitialContextFactory for the JMS provider that is going to be used. + * + * The situation is that the InitialContext constructor instantiates an instance of the InitialContextFactory by + * calling "new" using the TCCL - thus there is a need to prepare the TCCL. + * 03/12/2010 MJE - for the present, only worry about ActiveMQ - other providers can be added later + * 10/12/2010 MJE - the following code attempts to get the classloader for the ActiveMQ initial context factory + * it will fail if the ActiveMQ classes are not available in the runtime, but the code will still + * execute (although under OSGi the new InitialContext() operation will fail to find a suitable + * InitialContextFactory object...) + */ + + String contextFactoryName = (String)props.get(Context.INITIAL_CONTEXT_FACTORY); + + ClassLoader ActiveMQCl = null; + try { + if( contextFactoryName == null || ACTIVEMQ_FACTORY.equals(contextFactoryName) ) { + ActiveMQCl = ActiveMQInitialContextFactory.class.getClassLoader(); + props.setProperty(Context.INITIAL_CONTEXT_FACTORY, ACTIVEMQ_FACTORY); + if( props.getProperty(Context.PROVIDER_URL) == null ) { + props.setProperty(Context.PROVIDER_URL, "vm://localhost?broker.persistent=false" ); + } // end if + } // end if + } catch (Exception e) { + // Nothing to do in this case - the ActiveMQCl classloader will simply be null + } // end try + + ClassLoader tccl = ClassLoaderContext.setContextClassLoader(JMSResourceFactoryImpl.class.getClassLoader(), + ActiveMQCl, + Thread.currentThread().getContextClassLoader() ); + try { + // Load the JNDI InitialContext (will load the InitialContextFactory, if present) + return new InitialContext(props); + } finally { + // Restore the TCCL if we changed it + if( tccl != null ) Thread.currentThread().setContextClassLoader(tccl); + } // end try + + } // end method getInitialContextOsgi +} |