Abstract: A computer implemented method, apparatus, and computer usable program product for processing application code. In one embodiment, a call is received to invoke a set of methods of annotated application code. The annotated application code includes a set of annotations specifying a selection of the set of methods. A selected method from the set of methods is invoked in response to determining that the call is valid according to the set of annotations. Thereafter, a subsequent set of valid methods for execution is identified based upon an annotation associated with the selected method.

Abstract: Efficient differencing and update mechanisms operate directly on the native representation of the data. No irrelevant differences are introduced by the process. The difference reports generated are stated in terms of the basic operations that can be performed on a data tree, thus requiring no additional interpretation, and making it amenable to direct human inspection and understanding. This mechanism can become a central part of any version management system.