Location of objects/services in a distributed objects/services system

• US 20040122862A1
• Filed: 03/20/2003
• Published: 06/24/2004
• Est. Priority Date: 12/18/2002
• Status: Active Grant

• Current Assignee: International Business Machines Corporation
• Original Assignee: International Business Machines Corporation
• Inventors: Todd, Stephen J.
• Granted Patent: US 7,203,705 B2
• Time in Patent Office: Days
• US Class Current: 707/104.1
• CPC Class Codes: G06F 9/546 Message passing systems or structures, e.g. queues
• CPC Class Codes: Y10S 707/99945 Object-oriented database structure processing
• CPC Class Codes: Y10S 707/99948 Application of database or data structure, e.g. distributed, multimedia, or image

Abstract

The invention provides a system whereby both queues and objects/services in a messaging system can be located via the same mechanism (message clustering).

Claims

1. A method for sending a request for a target service to perform an operation, the method comprising the steps of:

receiving a request for a target service to perform an operation;

creating a message for a message queue, the message being representative of the request, the message including an indication of the message queue and the operation to perform;

determining the location of said message queue, said queue being a cluster queue in a messaging cluster; and

sending the message to the queue, wherein the queue represents the target service.

2. The method of claim 1 wherein the queue is an alias queue, said alias queue mapping to a real queue.

7. A computer program comprising program code means for performing the method of claim 1 when executed on a computer.

3. A system for requesting a target service to perform an operation, the system comprising:

a target service;

means for receiving a request for a target service to perform an operation;

means for creating a message representative of the request, said message including an indication of the target service and the operation to perform;

a queue representing the target service, said queue being a cluster queue in a messaging cluster;

means for determining the location of said queue;

means, responsive to determining the location of said queue, for sending the message to said queue;

an agent for reading the message from said queue; and

means for performing the operation against the target service.

4. The system of claim 3 wherein the queue is an alias queue, said alias queue mapping to a real queue.

5. The system of claim 4 comprising a plurality of alias queues, each queue representing a target service and mapping to the same real queue.

6. The system of claim 4 wherein the agent reads messages from the real queue.

8. Apparatus for sending a request for a target service to perform an operation, the apparatus comprising:

means for receiving a request for a target service to perform an operation;

means for creating a message for a message queue, the message being representative of the request, the message including an indication of the message queue and the operation to perform;

means for determining the location of said message queue, said queue being a cluster queue in a messaging cluster; and

means for sending the message to the queue, wherein the queue represents the target service.

9. The apparatus of claim 8 wherein the queue is an alias queue, said alias queue mapping to a real queue.