1 files changed, 223 insertions, 0 deletions
diff --git a/sandbox/event/modules/binding-jms-runtime/src/main/java/org/apache/tuscany/sca/binding/jms/provider/JMSResourceFactoryImpl.java b/sandbox/event/modules/binding-jms-runtime/src/main/java/org/apache/tuscany/sca/binding/jms/provider/JMSResourceFactoryImpl.java
new file mode 100644
index 0000000000..6efcb2010f
--- /dev/null
+++ b/sandbox/event/modules/binding-jms-runtime/src/main/java/org/apache/tuscany/sca/binding/jms/provider/JMSResourceFactoryImpl.java
@@ -0,0 +1,223 @@
+/*
+ * 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.JMSBindingConstants;
+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 JMSResourceFactoryImpl implements JMSResourceFactory {
+
+    private String initialContextFactoryName;
+    private String connectionFactoryName = "ConnectionFactory";
+    private String jndiURL;
+
+    private Connection connection;
+    private Context context;
+    private boolean isConnectionStarted;
+
+    public JMSResourceFactoryImpl(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.sca.binding.jms.provider.JMSResourceFactory#getConnection()
+     */
+    public Connection getConnection() throws NamingException, JMSException {
+        if (connection == null) {
+            createConnection();
+        }
+        return connection;
+    }
+
+    /*
+     * (non-Javadoc)
+     * 
+     * @see org.apache.tuscany.sca.binding.jms.provider.JMSResourceFactory#createSession()
+     */
+    public Session createSession() throws JMSException, NamingException {
+        return getConnection().createSession(false, Session.AUTO_ACKNOWLEDGE);
+    }
+
+    /*
+     * (non-Javadoc)
+     * 
+     * @see org.apache.tuscany.sca.binding.jms.provider.JMSResourceFactory#startConnection()
+     */
+    public void startConnection() throws JMSException, NamingException {
+        if (!isConnectionStarted) {
+            getConnection().start();
+            isConnectionStarted = true;
+        }
+    }
+
+    /*
+     * (non-Javadoc)
+     * 
+     * @see org.apache.tuscany.sca.binding.jms.provider.JMSResourceFactory#closeConnection()
+     */
+    public void closeConnection() throws JMSException {
+        if (connection != null) {
+            try {
+                connection.close();
+            } catch (JMSException e) {
+                // if using an embedded broker then when shutting down Tuscany the broker may get closed
+                // before this stop method is called. I can't see how to detect that so for now just
+                // ignore the exception if the message is that the transport is already disposed
+                if (!e.getMessage().contains("disposed")) {
+                    throw e;
+                }
+            }
+        }
+    }
+
+    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");
+            }
+        }
+    }
+
+    /* (non-Javadoc)
+     * @see org.apache.tuscany.sca.binding.jms.provider.JMSResourceFactory#lookupDestination(java.lang.String)
+     */
+    public Destination lookupDestination(String destName) throws NamingException {
+        if (JMSBindingConstants.DEFAULT_DESTINATION_NAME.equals(destName)) {
+            return null;
+        }
+        
+        Destination dest = (Destination)jndiLookUp(destName);
+        if (dest == null) {
+            dest = lookupPhysical(destName);
+        }
+        return dest;
+    }
+
+    protected Destination lookupPhysical(String jndiName) {
+
+        // TODO: the SCA JMS spec says a destination name may be a non-jndi plain destination name 
+        
+//        Session session = null;
+//        try {
+//
+//            Destination dest;
+//            session = createSession();
+//            dest = session.createQueue(jndiName);
+//            return dest;
+//
+//        } catch (JMSException e) {
+//            throw new JMSBindingException(e);
+//        } catch (NamingException e) {
+//            throw new JMSBindingException(e);
+//        } finally {
+//            if (session != null) {
+//                try {
+//                    session.close();
+//                } catch (JMSException e) {
+//                    throw new JMSBindingException(e);
+//                }
+//            }
+//        }
+        return null;
+    }
+
+    /* (non-Javadoc)
+     * @see org.apache.tuscany.sca.binding.jms.provider.JMSResourceFactory#createDestination(java.lang.String)
+     */
+    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;
+    }
+}