By the same authors

An IDE-based, Integrated Solution to Schema Evolution of Object-Oriented Software

Research output: Contribution to conferencePaper



Publication details

DatePublished - 1 Nov 2009
Number of pages4
Original languageUndefined/Unknown


With the wide support for serialization in object-oriented programming languages, persistent objects have become common place. Retrieving previously ¿persisted¿ objects from classes whose schema changed is however difficult, and may lead to invalidating the consistency of the application. The ESCHER framework addresses this issues through an IDE-based approach that handles schema evolution by managing versions of the code and generating transformation functions automatically. The infrastructure also enforces class invariants to prevent the introduction of any corrupt objects. This article describes the principles behind invariant-safe schema evolution,and the design and implementation of the ESCHER system.

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