International Business Machines Corporation

Andrew M Leonard

Doina Liliana Klinger

Mario Ernesto De Armas

Andrew Ian Hickson

David Ware

Vernon Maurice Green

Malcolm David Ayres

Stephen Rea

Steve Groeger

David Currie

Andrew J Whitfield

Embodiments of the present invention provide a method, system and computer program product for watch list oriented processing of events in a multi-object event data processing system. In an embodiment of the invention, a method for watch list oriented processing of events in a multi-object event data processing system, can include pre-processing a set of subscriptions against a pool of objects monitored for events in the data processing system to produce a watch list of objects. The method further can include receiving events in the data processing system corresponding to different ones of the objects in the pool of objects. The method yet further can include comparing the received events to the watch list to determine which events pertain to objects referenced in the watch list. Finally, for each one of the received events, a notification can be forwarded to one or more subscribers corresponding to an object in the watch list matching an object implicated by the one of the received events.

Subscription watch lists for event handling

The present invention provides a method, system and computer program product for watch list oriented processing of events in a multi-object event data processing system. In an embodiment of the invention, a method for watch list oriented processing of events in a multi-object event data processing system, can include pre-processing a set of subscriptions against a pool of objects monitored for events in the data processing system to produce a watch list of objects. The method further can include receiving events in the data processing system corresponding to different ones of the objects in the pool of objects. The method yet further can include comparing the received events to the watch list to determine which events pertain to objects referenced in the watch list.

Disclosed is a method for administering messages. In response to a determination that one or more consuming applications have failed to process the same message on a queue a predetermined number of times, the message is made unavailable to consuming applications. Responsive to determining that a predetermined number of messages have been made unavailable to consuming applications, one or more consuming applications are prevented from consuming messages from the queue.

Method, apparatus and computer program for administering messages which a consuming application fails to process

A JMS implementation integrates into an application server based on the JCA Architecture. A JMS Connection is integrated based on one implementation of a JCA which sets transactional context for the JMS Connection to 'no transaction', and the JMS Session is integrated based on a second implementation of the JCA which ignores any security credentials provided. The application is unaware that it is dealing with a JCA implementation and not directly with the JMS implementation and the JMS implementation is unaware that it is being called via the JCA implementation and not directly from the application.

JMS integration into an application server

Thus the present invention provides a method which enables a JMS implementation to be integrated into an application server based on the JCA Architecture. In this method the JMS Connection is integrated based on one implementation of the JCA which sets transactional context for the JMS Connection to no transaction, and the JMS Session is integrated based on a second implementation of the JCA which sets the security property to no security. In the method the application is unaware that is it dealing with a JCA implementation and not directly with the JMS implementation and the JMS implementation is unaware that it is being called via the JCA and not directly from the application. The method thus provides an architecture for integration of a JMS into an application server which takes advantage of the JCA such as provision of security properties and transactional context to the JMS in a standard way, and JMS connection pooling and sharing.

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Winchester, United Kingdom

Andrew M Leonard