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Eclipse Amlen

Working with Eclipse Amlen JMS

The following topics cover specific Eclipse Amlen JMS client features, including the creation of administered objects and capabilities that can add value.

Creating administered objects
To use JMS applications with Eclipse Amlen, you must first create Eclipse Amlen administered objects for JMS.
Shared subscriptions in JMS
The Eclipse Amlen JMS client provides support for shared subscriptions as an extension of the JMS 1.1 specification. JMS applications that use this extension to the JMS 1.1 specification can be compiled and run only with Eclipse Amlen JMS client implementations. You can use the client to configure durable and non-durable topic subscriptions to be shared. In a non-shared subscription, each consumer to a particular topic receives a copy of all of the messages that are published to that topic string. In a shared subscription, each message is delivered to only one of the consumers for that subscription. This is similar to message sharing on a multi-consumer queue.
Poison messages
A poison message is a message that a receiving application cannot process. You can handle poison messages in your Eclipse Amlen JMS application by using the JMSXDeliveryCount message property.
Securing Eclipse Amlen JMS client by using Java runtime environment global properties
You can configure secure connections for the Eclipse Amlen JMS client by using Java™ runtime environment (JRE) global properties. This configuration approach affects all outbound connections from the process.
Running Eclipse Amlen JMS client applications under the Java Security Manager
The Eclipse Amlen JMS client can run with the Java™ Security Manager enabled. To successfully run applications with the Security Manager enabled, you must configure your JVM with a suitable policy definition file.
Exception Handling
It is important to consider implementing a JMS exception listener so that your client application is aware of errors that are reported asynchronously. If you do not implement an exception listener, some error conditions can cause the Eclipse Amlen JMS client to automatically close connections.
Using client trace facilities
Client trace facilities are used primarily for debugging tools.

Parent topic: Developing JMS applications