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Diffstat (limited to 'plugins/org.eclipse.net4j.examples.installer/examples/org.eclipse.net4j.jms.api/src/javax/jms/QueueRequestor.java')
-rw-r--r--plugins/org.eclipse.net4j.examples.installer/examples/org.eclipse.net4j.jms.api/src/javax/jms/QueueRequestor.java124
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diff --git a/plugins/org.eclipse.net4j.examples.installer/examples/org.eclipse.net4j.jms.api/src/javax/jms/QueueRequestor.java b/plugins/org.eclipse.net4j.examples.installer/examples/org.eclipse.net4j.jms.api/src/javax/jms/QueueRequestor.java
new file mode 100644
index 0000000000..68860de448
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+++ b/plugins/org.eclipse.net4j.examples.installer/examples/org.eclipse.net4j.jms.api/src/javax/jms/QueueRequestor.java
@@ -0,0 +1,124 @@
+/*
+ * 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>QueueRequestor</CODE> helper class simplifies
+ * making service requests.
+ *
+ * <P>The <CODE>QueueRequestor</CODE> constructor is given a non-transacted
+ * <CODE>QueueSession</CODE> and a destination <CODE>Queue</CODE>. It creates a
+ * <CODE>TemporaryQueue</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.TopicRequestor
+ */
+
+public class QueueRequestor {
+
+ QueueSession session; // The queue session the queue belongs to.
+ Queue queue; // The queue to perform the request/reply on.
+ TemporaryQueue tempQueue;
+ QueueSender sender;
+ QueueReceiver receiver;
+
+
+ /** Constructor for the <CODE>QueueRequestor</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>QueueSession</CODE> the queue belongs to
+ * @param queue the queue to perform the request/reply call on
+ *
+ * @exception JMSException if the JMS provider fails to create the
+ * <CODE>QueueRequestor</CODE> due to some internal
+ * error.
+ * @exception InvalidDestinationException if an invalid queue is specified.
+ */
+
+ public
+ QueueRequestor(QueueSession session, Queue queue) throws JMSException {
+ this.session = session;
+ this.queue = queue;
+ tempQueue = session.createTemporaryQueue();
+ sender = session.createSender(queue);
+ receiver = session.createReceiver(tempQueue);
+ }
+
+
+ /** Sends a request and waits for a reply. The temporary queue is used for
+ * the <CODE>JMSReplyTo</CODE> destination, and only one reply per request
+ * is expected.
+ *
+ * @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(tempQueue);
+ sender.send(message);
+ return (receiver.receive());
+ }
+
+
+ /** Closes the <CODE>QueueRequestor</CODE> and its session.
+ *
+ * <P>Since a provider may allocate some resources on behalf of a
+ * <CODE>QueueRequestor</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>QueueSession</CODE> object
+ * passed to the <CODE>QueueRequestor</CODE> constructor.
+ *
+ * @exception JMSException if the JMS provider fails to close the
+ * <CODE>QueueRequestor</CODE> due to some internal
+ * error.
+ */
+
+ public void
+ close() throws JMSException {
+
+ // publisher and consumer created by constructor are implicitly closed.
+ session.close();
+ tempQueue.delete();
+ }
+}

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