3.3.4.1 XA Lookup

The XA Lookup event MUST be signaled with the following arguments:

• XID - The XA Transaction Branch Identifier to look for.

• Resource Manager Identifier - The resource manager ID to be used to look for the corresponding XA Superior Proxy object.

The XA Lookup event MUST return the following value:

• Transaction Identifier - Identifier field of the associated OleTx transaction object. Null indicates a failure.

If the XA Lookup event is signaled, the XA Superior Transaction Manager MUST perform the following actions:

• Attempt to find the XA Superior Proxy object whose key is set to the provided Resource Manager Identifier in the XA Superior Proxy Table.

• If the XA Superior Proxy object is found:

  • Attempt to find XA Transaction Object whose key is set to the provided XID in the XA Transaction Table referenced by the located XA Superior Proxy object:

    • If the XA Transaction Object is found:

      • Return the Transaction Identifier field of the located XA Transaction Object.

    • Otherwise:

      • Return NULL.

• Otherwise:

  • Return NULL.