1 files changed, 123 insertions, 0 deletions
diff --git a/plugins/org.eclipse.net4j.examples.installer/examples/org.eclipse.net4j.jms.api/src/javax/jms/TopicRequestor.java b/plugins/org.eclipse.net4j.examples.installer/examples/org.eclipse.net4j.jms.api/src/javax/jms/TopicRequestor.java
new file mode 100644
index 0000000000..0ef194b428
--- /dev/null
+++ b/plugins/org.eclipse.net4j.examples.installer/examples/org.eclipse.net4j.jms.api/src/javax/jms/TopicRequestor.java
@@ -0,0 +1,123 @@
+/*
+ * The contents of this file are subject to the terms 
+ * of the Common Development and Distribution License 
+ * (the License).  You may not use this file except in
+ * compliance with the License.
+ * 
+ * You can obtain a copy of the license at 
+ * https://glassfish.dev.java.net/public/CDDLv1.0.html or
+ * glassfish/bootstrap/legal/CDDLv1.0.txt.
+ * See the License for the specific language governing 
+ * permissions and limitations under the License.
+ * 
+ * When distributing Covered Code, include this CDDL 
+ * Header Notice in each file and include the License file 
+ * at glassfish/bootstrap/legal/CDDLv1.0.txt.  
+ * If applicable, add the following below the CDDL Header, 
+ * with the fields enclosed by brackets [] replaced by
+ * you own identifying information: 
+ * "Portions Copyrighted [year] [name of copyright owner]"
+ * 
+ * Copyright 2006 Sun Microsystems, Inc. All rights reserved.
+ */
+
+package javax.jms;
+
+/** The <CODE>TopicRequestor</CODE> helper class simplifies
+  * making service requests.
+  *
+  * <P>The <CODE>TopicRequestor</CODE> constructor is given a non-transacted 
+  * <CODE>TopicSession</CODE> and a destination <CODE>Topic</CODE>. It creates a 
+  * <CODE>TemporaryTopic</CODE> for the responses and provides a 
+  * <CODE>request</CODE> method that sends the request message and waits 
+  * for its reply.
+  *
+  * <P>This is a basic request/reply abstraction that should be sufficient 
+  * for most uses. JMS providers and clients are free to create more 
+  * sophisticated versions.
+  *
+  * @version     1.0 - 8 July 1998
+  * @author      Mark Hapner
+  * @author      Rich Burridge
+  *
+  * @see         javax.jms.QueueRequestor
+  */
+
+public class TopicRequestor {
+
+    TopicSession    session;    // The topic session the topic belongs to.
+    Topic           topic;      // The topic to perform the request/reply on.  
+    TemporaryTopic  tempTopic;
+    TopicPublisher  publisher;
+    TopicSubscriber subscriber;
+
+
+    /** Constructor for the <CODE>TopicRequestor</CODE> class.
+      * 
+      * <P>This implementation assumes the session parameter to be non-transacted,
+      * with a delivery mode of either <CODE>AUTO_ACKNOWLEDGE</CODE> or 
+      * <CODE>DUPS_OK_ACKNOWLEDGE</CODE>.
+      *
+      * @param session the <CODE>TopicSession</CODE> the topic belongs to
+      * @param topic the topic to perform the request/reply call on
+      *
+      * @exception JMSException if the JMS provider fails to create the
+      *                         <CODE>TopicRequestor</CODE> due to some internal
+      *                         error.
+      * @exception InvalidDestinationException if an invalid topic is specified.
+      */ 
+
+    public 
+    TopicRequestor(TopicSession session, Topic topic) throws JMSException {
+	this.session = session;
+	this.topic   = topic;
+        tempTopic    = session.createTemporaryTopic();
+        publisher    = session.createPublisher(topic);
+        subscriber   = session.createSubscriber(tempTopic);
+    }
+
+
+    /** Sends a request and waits for a reply. The temporary topic is used for
+      * the <CODE>JMSReplyTo</CODE> destination; the first reply is returned, 
+      * and any following replies are discarded.
+      *
+      * @param message the message to send
+      *  
+      * @return the reply message
+      *  
+      * @exception JMSException if the JMS provider fails to complete the
+      *                         request due to some internal error.
+      */
+
+    public Message
+    request(Message message) throws JMSException {
+	message.setJMSReplyTo(tempTopic);
+        publisher.publish(message);
+	return(subscriber.receive());
+    }
+
+
+    /** Closes the <CODE>TopicRequestor</CODE> and its session.
+      *
+      * <P>Since a provider may allocate some resources on behalf of a 
+      * <CODE>TopicRequestor</CODE> outside the Java virtual machine, clients 
+      * should close them when they 
+      * are not needed. Relying on garbage collection to eventually reclaim 
+      * these resources may not be timely enough.
+      *
+      * <P>Note that this method closes the <CODE>TopicSession</CODE> object 
+      * passed to the <CODE>TopicRequestor</CODE> constructor.
+      *  
+      * @exception JMSException if the JMS provider fails to close the
+      *                         <CODE>TopicRequestor</CODE> due to some internal
+      *                         error.
+      */
+
+    public void
+    close() throws JMSException {
+
+	// publisher and consumer created by constructor are implicitly closed.
+	session.close();
+	tempTopic.delete();
+    }
+}