Method and apparatus for processing multiple service requests within a global transaction by a single server application program instance

A computer implemented method for processing multiple service requests of a global transaction by a single server application program instance, comprising the steps of:

• issuing a first service request that is part of a global transaction directly to the server application program instance;
• associating said first service request with the server application program instance through an identifier which identifies said global transaction;
• processing said first service request by the server application program instance;
• providing access to a first transaction control endpoint to the server application program instance;
• monitoring said first transaction control endpoint by the server application program instance for transaction control messages associated with said first service request, wherein said transaction control messages contain transaction control functions;
• issuing a second service request that is part of the global transaction directly to the server application program instance;
• associating said second service request with the server application program instance through said identifier which identifies said global transaction;
• providing access to a second transaction control endpoint to the server application program instance;
• restarting the server application program instance to process said second service request;
• monitoring said second transaction control endpoint by the server application program instance for transaction control messages associated with said second service request;
• processing said transaction control functions included in said transaction control messages, said transaction control functions to ensure that when a transaction manager sends a commit message to said server application program instance, either both of said first and second service requests are processed successfully to completion for commitment or the processing results from both of said first and second service requests are not retained;
• and
• issuing responses to said transaction control messages.

A computer implemented method for processing multiple service requests of a global transaction, comprising the steps of:

• establishing a global transaction identifier;
• generating a first service request by a client application program instance, wherein said first service request includes said global transaction identifier;
• obtaining a first transaction thread identifier for said client application program instance;
• obtaining a first transaction control endpoint for said first service request;
• associating said first transaction thread identifier with said global transaction identifier;
• associating said first transaction control endpoint with said first transaction thread identifier;
• issuing said first service request to a server application program instance using said first transaction control endpoint;
• receiving said first service request on a server system;
• obtaining a second transaction thread identifier on said server system for said server application program instance;
• associating said second transaction thread identifier with said global transaction identifier from said first service request;
• initiating said server application program instance to process said first service request;
• and
• providing said server application program instance with a second transaction control endpoint for sending and receiving transaction control messages for said first service request, said transaction control messages to ensure that said first service request and any subsequent ones of the multiple service requests of the global transaction which are received by said server application program instance are either all processed or none are processed.

A global transaction processing system, comprising:

• a client data processing system;
• a server data processing system coupled to said client data processing system;
• issue means operable on said client data processing system for issuing a plurality of service requests belonging to a global transaction, wherein each of said plurality of service requests contains a global transaction identifier that identifies the global transaction of which said plurality of service requests are a part;
• establishment means operable on said server data processing system for establishing a list of transaction control endpoints for receiving transaction control messages and sending responses to said transaction control messages;
• server application program instance means operable on said server data processing system for sequentially processing said plurality of service requests and for monitoring transaction control endpoints specified in said list of transaction control endpoints for transaction control messages, wherein each of said transaction control messages contains a function and is respectively associated with one of said plurality of service requests;
• association means coupled to said server application program instance means for associating the server application program instance means with said global transaction identifier;
• and
• process means coupled to said server application program instance means for processing said transaction control messages.