O'Reilly - Java Message Service

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} if (message != null){ int orderQty = message.getIntProperty("QTY"); if ( orderQty > bestQty && orderQty
} qConnect.start( ); // Start the connection javax.jms.TextMessage textMessage = null; while( true ){ textMessage = (javax.jms.TextMessage)qReceiver.receive(1000); if ( textMessage == null ){ qConnect.stop( ); break; // No more messages to get } String text = textMessage.getText( ); int qty = textMessage.getIntProperty("QTY"); System.out.println("\nOrder received - "+text+ " from " + textMessage.getJMSCorrelationID( )); } ... if (qty == bestQty){ System.out.println("Fulfilling order"); // Do some processing to fulfill order } else { System.out.println("Placing in BACK-ORDER status"); // Do some processing to create BACK-ORDER status } Java Message Service Messages obtained from a QueueBrowser are copies of messages contained in the queue and are not considered to be consumed - they are merely for browsing. It is important to note that the QueueBrowser is not guaranteed to have a definitive list of messages in the queue. The JMS specification allows the QueueBrowser to contain a snapshot, or a copy of, the queue as it appears at the time the QueueBrowser is created. The behavior may vary depending on vendor implementation, since the contents of the queue may change between the time the browser is created and the time you examine its contents. No matter how small that window of time is, new messages may arrive and other messages may be consumed by other JMS clients. Some JMS providers will update QueueBrowsers as the status of the queue changes while others will not. 83
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Java Message Service Richard Monson
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Chapter 7. Deployment Consideration
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Java Message Service Although this
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Java Message Service Examples devel
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Java Message Service Chapter 1. Und
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Java Message Service Before we disc
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Java Message Service to naming and
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1.3.1 Enterprise Application Integr
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Java Message Service Figure 1.5. Dy
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Java Message Service With J2EE, JSP
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Java Message Service recognition of
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TopicConnectionFactory conFactory =
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Java Message Service Before examini
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Understanding JNDI Java Message Ser
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Java Message Service The TopicConne
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protected void writeMessage(String
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Java Message Service When the Topic
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Page 40 and 41: 3.1.1.3 JMSMessageID Java Message S
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Page 44 and 45: Java Message Service The following
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Page 52 and 53: Java Message Service Table 3.1 show
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Page 56 and 57: 3.4.9 Interoperability and Portabil
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Page 60 and 61: jne.printStackTrace( ); System.exit
Page 62 and 63: try { Properties env = new Properti
Page 64 and 65: Java Message Service Once the Retai
Page 66 and 67: Java Message Service We can demonst
Page 68 and 69: Java Message Service publish( ) met
Page 70 and 71: Java Message Service The receive( )
Page 72 and 73: 4.7 Unsubscribing Java Message Serv
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Page 76 and 77: import javax.jms.TopicConnectionFac
Page 78 and 79: } } try { System.out.println("\nRet
Page 80 and 81: TopicConnectionFactory tFactory = n
Page 82 and 83: public QWholesaler(String broker, S
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Page 90 and 91: 6.2.1 AUTO_ACKNOWLEDGE Java Message
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Page 100 and 101: Figure 6.8. Transactional messages
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Page 104 and 105: } return; session.commit(); } else
Page 106 and 107: Else, commit (that's what just happ
Page 108 and 109: XAResource jmsXA = session.getXARes
Page 110 and 111: ... } { try { Thread.sleep(10000);
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Page 120 and 121: 7.2.5 The Bottom Line Java Message
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Page 128 and 129: Java Message Service JNDI ENC. In a
Page 130 and 131: 8.3 The JMS Resource in J2EE Java M
Page 132 and 133: Java Message Service Although sessi
Page 134 and 135: Figure 8.3. Lifecycle of a message-
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Java Message Service With the messa
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Java Message Service It's also supp
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Java Message Service The FioranoMQ
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Java Message Service The iBus//Mobi
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9.6.2 Next Version Java Message Ser
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A.1.2 Connection Java Message Servi
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A.1.8 JMSException Java Message Ser
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} public void setInt(String name, i
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} public Message receiveNoWait( ) t
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} public void writeInt(int value) t
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A.2.6 QueueSender Java Message Serv
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} throws JMSException; public Conne
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Appendix B. Message Headers Java Me
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Java Message Service are delivered
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Java Message Service JMSTimestamp P
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UTC Java Message Service UTC (Unive
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Java Message Service JMSReplyTo Pur
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Java Message Service JMSType Purpos
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} public void setByteProperty(Strin
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Java Message Service Each of the ac
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JMSXAppID Java Message Service This
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Appendix D. Message Selectors Java
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The BETWEEN operator can be used to
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D.5 Declaring a Message Selector Ja
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Colophon Java Message Service Our l
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