This package contains the classes and interfaces that define the interaction between the transaction manager and the resources it manages.

Classes and interfaces here are conforming to the Java Transaction API (JTA) 1.0.1 specification.

The interaction is modelled after the X/Open CAE Specification (Distributed Transaction Processing: The XA Specification). The CORBA CosTransactions specification is freely available, and gives a pretty good overview of the XA protocol.