Chapter 2 Messages Message objects carry application data between client program processes. This chapter presents the structure of messages, JMS message selector syntax to specify a subset of messages based on their property values, the message types and their functions. Topics • Parts of a Message • Body Types • Headers • Properties • Message Selectors • tibemsMsg • tibemsBytesMsg • tibemsMapMsg • tibemsObjectMsg • tibemsStreamMsg • tibemsTextMsg • tibemsData • tibemsDeliveryMode • tibemsNpCheckMode • tibemsMsgCompletionCallback • tibemsMsgEnum • tibemsMsgField • tibemsMsgType