DATA SUBSET RETRIEVAL FROM A QUEUED MESSAGE

• US 20100228748A1
• Filed: 02/23/2009
• Published: 09/09/2010
• Est. Priority Date: 02/23/2009
• Status: Active Application

• Current Assignee: International Business Machines Corporation
• Original Assignee: International Business Machines Corporation
• Inventors: Dixon, Bret
• Application Number:
  US12/391,176
• Publication Number:
  US 20100228748A1
• Time in Patent Office: Days
• US Class Current: 707/754
• CPC Class Codes: G06F 9/546 Message passing systems or structures, e.g. queues

Abstract

Embodiments of the present invention provide a method, system and computer program product for data subset retrieval from a queued message. In an embodiment of the invention, a method for data subset retrieval from a queued message can include receiving from a requesting application a message retrieval request for a message in a message queue and retrieving the message from the message queue. A field specified by the request can be identified and only data in the message corresponding to the identified field specified by the request can be transmitted to the requesting application.

Claims

1. A method for data subset retrieval from a queued message comprising:

receiving from a requesting application a message retrieval request for a message in a message queue;

retrieving the message from the message queue;

identifying a field specified by the request; and

,

transmitting to the requesting application only data in the message corresponding to the identified field specified by the request.

2. The method of claim 1, wherein transmitting to the requesting application only data in the message corresponding to the at least one identified field specified by the request, comprises:

determining from the request a specified template;

loading the specified template in memory;

mapping data in the retrieved message to a field in the template corresponding to the field specified by the request; and

,

transmitting the mapped data to the requesting application as a data subset.

3. The method of claim 1, wherein transmitting to the requesting application only data in the message corresponding to the at least one identified field specified by the request, comprises:

determining from the request a specified template included as part of the request;

loading the specified template in memory;

mapping data in the retrieved message to a field in the template corresponding to the field specified by the request; and

,

transmitting the mapped data to the requesting application as a data subset.

4. A message queuing data processing system comprising:

a host computing system comprising a processor and memory;

a message queue coupled to the host computing system; and

,

a data subset retrieval module executing in the host computing system, the module comprising program code enabled to receive from a requesting application a message retrieval request for a message in the message queue, to retrieve the message from the message queue, to identify a field specified by the request, and to transmit to the requesting application only data in the message corresponding to the identified field specified by the request.

5. The system of claim 4, further comprising a plurality of templates, each template comprising a plurality of fields in a message in the message queue, the program code of the data subset retrieval module being further enabled to determine from the request a specified one of the templates, to load the specified template in the memory, to map data in the retrieved message to a field in the specified one of the templates corresponding to the field specified by the request, and to transmit the mapped data to the requesting application as a data subset.

6. A computer program product comprising a computer usable medium embodying computer usable program code for data subset retrieval from a queued message, the computer program product comprising:

computer usable program code for receiving from a requesting application a message retrieval request for a message in a message queue;

computer usable program code for retrieving the message from the message queue;

computer usable program code for identifying a field specified by the request; and

,

computer usable program code for transmitting to the requesting application only data in the message corresponding to the identified field specified by the request.

7. The computer program product of claim 6, wherein the computer usable program code for transmitting to the requesting application only data in the message corresponding to the at least one identified field specified by the request, comprises:

computer usable program code for determining from the request a specified template;

computer usable program code for loading the specified template in memory;

computer usable program code for mapping data in the retrieved message to a field in the template corresponding to the field specified by the request; and

,

computer usable program code for transmitting the mapped data to the requesting application as a data subset.

8. The computer program product of claim 6, wherein the computer usable program code for transmitting to the requesting application only data in the message corresponding to the at least one identified field specified by the request, comprises:

computer usable program code for determining from the request a specified template included as part of the request;

computer usable program code for loading the specified template in memory;

computer usable program code for mapping data in the retrieved message to a field in the template corresponding to the field specified by the request; and

,

computer usable program code for transmitting the mapped data to the requesting application as a data subset.