TIBCO ActiveMatrix BusinessWorks ActiveAspects Plug-in provides a feature for the activities of the JAVA palette in TIBCO ActiveMatrix BusinessWorks and advice implementations to pass objects between each other by means of defining a "JAVA Object Reference" type for Input and/or Output schema of the activities involved.
An Advice Implementation or a JAVA Activity can check-in and check-out objects from the engine data structure by using API's. You have to pass a unique key which will act as a unique identifier for the object in the engine data structure.