Maintaining behavioral consistency during schema evolution

Bergstein, Paul L.; Hürsch, Walter L.

doi:10.1007/3-540-57342-9_73

Cited by 8 publications

(5 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The container classes are specified manually, and code must be transformed manually if a container class is required by a code transformation rule and none is available. For strongly typed languages there are the complications discussed in [7].…”

Section: Cg Program Transformationsmentioning

confidence: 98%

“…In this case, the code transformation rules had to be augmented somewhat in order to satisfy the type system. For a more complete discussion of type system issues see [7].…”

Section: Practical Experiencementioning

confidence: 99%

“…In the future, we will eliminate the Object class, and modify our transformations to satisfy the C++ type system. Many of the issues relevant to type system support in program transformations have already been investigated [7].…”

Section: Limitations Of the Language Modelmentioning

confidence: 99%

“…These object-extending class transformations are much easier to manage than the language-preserving transformations described here. A complete set of primitive object-extending transformations, and corresponding code update rules is described in [7]. The maintenance techniques for language-preserving transformations are intended to augment, rather than replace, existing techniques to allow for automatic maintenance over a much larger set of class reorganizations.…”

Section: Reorganizations That Are Not Language Preservingmentioning

confidence: 99%

See 3 more Smart Citations

Maintenance of object-oriented systems during structural evolution

Bergstein

1997

Theory Pract. Obj. Syst.

Self Cite

View full text Add to dashboard Cite

We have previously developed a mathematical treatment of a calculus for class transformations that preserve or extend a set of objects. Methods for automating the maintenance of structural and behavioral consistency in systems based on evolving class structures have been provided for the object-preserving and object-extending transformations. This work extends the calculus of class transformations to include certain transformations that reflect not only the extension and reclassification of existing objects, but also structural changes (other than addition of attributes) in the original objects.Language-preserving transformations are a special case of transformations that change the structure of existing objects. If an object schema is decorated with concrete syntax, it defines not only a class structure, but also a language for describing the objects. When two schemas define the same language but different classes, the language may be used to guide the transportation of functionality between domains. The languagepreserving transformations defined here form the basis of a complete transformation system for a subset of class graphs powerful enough to express the regular languages.

show abstract

Section: Cg Program Transformationsmentioning

confidence: 98%

“…In this case, the code transformation rules had to be augmented somewhat in order to satisfy the type system. For a more complete discussion of type system issues see [7].…”

Section: Practical Experiencementioning

confidence: 99%

Section: Limitations Of the Language Modelmentioning

confidence: 99%

Section: Reorganizations That Are Not Language Preservingmentioning

confidence: 99%

See 2 more Smart Citations

Maintenance of object-oriented systems during structural evolution

Bergstein

1997

Theory Pract. Obj. Syst.

Self Cite

View full text Add to dashboard Cite

show abstract

“…However, there has been surprisingly little attention paid in the database community toward this direction, although software reuse has been one of the critical issues in software engineering for the last decade. As [3] has shown, program adaptation can be exceedingly hard for typed languages (such as C++) even for simple schema changes. Therefore, it is important and beneficial to put some research effort on avoiding or minimizing program changes in anticipation of schema updates rather than trying to fix things after changes occured.…”

Section: Related Researchmentioning

confidence: 99%

The role of polymorphic reuse mechanisms in schema evolution in an object-oriented database

Liu

Zicari

Hürsch³

et al. 1997

IEEE Trans. Knowl. Data Eng.

View full text Add to dashboard Cite

A seamless approach to the incremental design and reuse of object-oriented methods and query specifications is presented. We argue for avoiding or minimizing the effort required for manually reprogramming methods and queries due to schema modifications, and demonstrate how the role of polymorphic reuse mechanisms is exploited for enhancing the adaptiveness of database programs against schema evolution in an object-oriented database. The salient features of our approach are the use of propagation patterns and a mechanism for propagation pattern refinement. Propagation patterns are employed as an interesting specification formalism for modeling operational requirements. They encourage the reuse of operational specifications against the structural modification of an object-oriented schema. Propagation pattern refinement is suited for the specification of reusable operational modules. It promotes the reusability of propagation patterns toward the operational requirement changes. This approach has a formal basis and emphasizes structural derivation of specifications. The main innovations are in raising the level of abstraction for behavioral schema design, and for making possible the derivation of operational semantics from structural specifications. As a result, both the modularity and reusability of object-oriented schemas are increased.

show abstract

Designing object systems for evolution

Mätzel

Bischofberger²

1997

Theory Pract. Obj. Syst.

View full text Add to dashboard Cite

Maintaining behavioral consistency during schema evolution

Cited by 8 publications

References 10 publications

Maintenance of object-oriented systems during structural evolution

Maintenance of object-oriented systems during structural evolution

The role of polymorphic reuse mechanisms in schema evolution in an object-oriented database

Designing object systems for evolution

Contact Info

Product

Resources

About