Header fields in an XMS message
To allow an XMS application to exchange messages with a WebSphere JMS application, the header of an XMS message contains the JMS message header fields.
The names of these header fields commence with the prefix JMS. For a description of the JMS message header fields, see the Java Message Service Specification.
XMS implements the JMS message header fields as attributes of a Message object. Each header field has its own methods for setting and getting its value. For a description of these methods, see IMessage. A header field is always readable and writable.
Table 1 lists the JMS message header fields and indicates how the value of each field is set for a transmitted message. Some of the fields are set automatically by XMS when an application sends a message or, in the case of JMSRedelivered, when an application receives a message.| Name of the JMS message header field | How the value is set for a transmitted message (in the format method [class]) |
|---|---|
| JMSCorrelationID | Set JMSCorrelationID [Message] |
| JMSDeliveryMode | Send [MessageProducer] |
| JMSDestination | Send [MessageProducer] |
| JMSExpiration | Send [MessageProducer] |
| JMSMessageID | Send [MessageProducer] |
| JMSPriority | Send [MessageProducer] |
| JMSRedelivered | Receive [MessageConsumer] |
| JMSReplyTo | Set JMSReplyTo [Message] |
| JMSTimestamp | Send [MessageProducer] |
| JMSType | Set JMSType [Message] |