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JMSXAppID Java Message Service This property is a String that is set automatically by the JMS provider when the message is sent. Some JMS providers can assign an identifier to a specific JMS application, which is a set of consumers and subscribers that communicate using a set of destinations. JMSXProducerTXID and JMSXConsumerTXID Messages can be produced and consumed within a transaction. Every transaction in a system has a unique identity that can be obtained from the producer or consumer using these properties. The JMSXProducerTXID is set by the JMS provider when the message is sent, and the JMSXConsumerTXID is set by the JMS provider when the message is received. JMSXRcvTimestamp This property is a primitive long value that is set automatically by the JMS provider when the message is received. It represents the UTC time (see UTC in Appendix B) that the message was received by the consumer. JMSXDeliveryCount JMSXState This property is an int that is set automatically by the JMS provider when the message is received. If a message is not properly acknowledged by a consumer it may be redelivered. This property keeps a tally of the number of times the message server attempts to deliver the message to that particular consumer. This property is an int that is set automatically by the JMS provider. The property is for use by repositories and JMS provider tools and is not available to either the consumer or producer - as a developer, you will never have access to this property. The property provides a standard way for a JMS provider to annotate the state of a message. States can be one of the following: 1 (waiting), 2 (ready), 3 (expired), or 4 (retained). This property can be safely ignored by most JMS developers, but an explanation of its purpose is provided for completeness. The JMS-defined properties that are assigned when the message is received (JMSXConsumerTXID, JMSXRcvTimestamp, and JMSXDeliveryCount) are not available to the message's producer, but only available to the message consumer. C.7.2 Group JMS-Defined Properties While the bulk of JMSX properties are optional, the group properties are not optional; they must be supported by the JMS provider. The group properties allow a JMS client to group messages together and assign each message in the group with a sequence ID. Here are the group properties: 172
JMSXGroupID Java Message Service This property is a String that is set by the JMS client before the message is sent. It is the identity of the group to which the message belongs. JMSXGroupSeq This property is a primitive int type that is set by the JMS client before the message is sent. It is the sequence number of the message within a group of messages. C.8 Provider-Specific Properties Every JMS provider can define a set of proprietary properties of any type. These properties can be set by the client or the provider automatically. Provider-specific properties must start with the prefix "JMS_" followed by the property name (JMS_). The purpose of the provider-specific properties is to support proprietary vendor features. 173
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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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Java Message Service publishing a m
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Java Message Service Messages come
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3.1.1.3 JMSMessageID Java Message S
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3.2 Properties Java Message Service
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Java Message Service The following
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Notification of certain bids on inv
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Java Message Service When a consume
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UTF-8 Java Message Service UTF-8 en
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Java Message Service Table 3.1 show
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Java Message Service Essentially, M
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3.4.9 Interoperability and Portabil
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4.1.1 Running the B2B Application J
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jne.printStackTrace( ); System.exit
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try { Properties env = new Properti
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Java Message Service Once the Retai
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Java Message Service We can demonst
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Java Message Service publish( ) met
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Java Message Service The receive( )
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4.7 Unsubscribing Java Message Serv
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Java Message Service multiple consu
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import javax.jms.TopicConnectionFac
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} } try { System.out.println("\nRet
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TopicConnectionFactory tFactory = n
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public QWholesaler(String broker, S
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Java Message Service have already p
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} if (message != null){ int orderQt
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Java Message Service Chapter 6. Gua
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6.2.1 AUTO_ACKNOWLEDGE Java Message
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Java Message Service via publish-an
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Java Message Service message. If th
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Java Message Service QWholesaler an
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Java Message Service avoids process
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Figure 6.8. Transactional messages
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Java Message Service uses a JMS tra
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} return; session.commit(); } else
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Else, commit (that's what just happ
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XAResource jmsXA = session.getXARes
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... } { try { Thread.sleep(10000);
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Chapter 7. Deployment Consideration
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Java Message Service A vendor may h
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Java Message Service that your memo
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Java Message Service only really vi
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7.2.5 The Bottom Line Java Message
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Java Message Service There are two
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Java Message Service Figure 7.2. Us
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Page 134 and 135: Figure 8.3. Lifecycle of a message-
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Page 140 and 141: Java Message Service The FioranoMQ
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Page 144 and 145: 9.6.2 Next Version Java Message Ser
Page 146 and 147: A.1.2 Connection Java Message Servi
Page 148 and 149: A.1.8 JMSException Java Message Ser
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Page 156 and 157: A.2.6 QueueSender Java Message Serv
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Page 170 and 171: Java Message Service JMSType Purpos
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Page 178 and 179: Appendix D. Message Selectors Java
Page 180 and 181: The BETWEEN operator can be used to
Page 182 and 183: D.5 Declaring a Message Selector Ja
Page 184: Colophon Java Message Service Our l
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