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Oracle Service Bus 11g Development Cookbook

You're reading from   Oracle Service Bus 11g Development Cookbook

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Product type Paperback
Published in Jan 2012
Publisher Packt
ISBN-13 9781849684446
Length 522 pages
Edition 1st Edition
Languages
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Toc

Table of Contents (19) Chapters Close

Oracle Service Bus 11g Development Cookbook
Credits
About the Authors
About the Reviewers
www.PacktPub.com
Preface
1. Creating a basic OSB service 2. Working Efficiently with OSB Artifacts in Eclipse OEPE FREE CHAPTER 3. Messaging with JMS Transport 4. Using EJB and JEJB transport 5. Using HTTP Transport 6. Using File and Email Transports 7. Communicating with the Database 8. Communicating with SOA Suite 9. Communication, Flow Control, and Message Processing 10. Reliable Communication with the OSB 11. Handling Message-level Security Requirements 12. Handling Transport-level Security Requirements Index

Consuming messages from a JMS queue/topic selectively


A proxy service can be configured to only consume messages that match a given criteria. This is done through the Message Selector in the JMS Transport Advanced Settings. A message selector is a logical statement similar to an SQL WHERE clause that the JMS provider evaluates against each message header or properties to determine whether the consumer should receive the message.

In this recipe, we will change the proxy service from the previous recipe Consuming messages from a JMS queue to only consume message with a priority higher than 5.

Getting ready

For this recipe, we will use the queue SourceQueue from the OSB Cookbook standard environment.

You can import the base OSB project containing the solution from the previous recipe into Eclipse from \chapter-3\getting-ready\consuming-messages-from-queue-topic-selectively.

How to do it...

To add a message selector, which only consumes messages with a priority greater than 5, perform the following...

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