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Composable Metamodeling Environment

http://www.isis.vanderbilt.edu. Composable Metamodeling Environment. Akos Ledeczi Institute for Software Integrated Systems Vanderbilt University. Metaprogramming Interface. Application Domain. Environment Evolution. Application Evolution. App. 1. App. 2. App. 3. DSDE.

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Composable Metamodeling Environment

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  1. http://www.isis.vanderbilt.edu Composable Metamodeling Environment Akos Ledeczi Institute for Software Integrated Systems Vanderbilt University

  2. Metaprogramming Interface Application Domain Environment Evolution Application Evolution App. 1 App. 2 App. 3 DSDE Model Builder Meta-Level Translation Model Interpretation Formal Specifications Model Interpreters Models Model Integrated Computing

  3. Signal Flow Models

  4. Signal Flow MetaModels

  5. Signal Flow Constraints • Event-based and on-demand • Context • Based on the Object Constraint Language (OCL) • Priority

  6. GME 2000 Components GME GUI Interpreter GME Core MGA Meta Browser Other GUI Add-on Constraint Manager

  7. GME 2000 Features • COM-based modular architecture • Database storage • Distributed, multi-user access • Type inheritance • Libraries • Event-based constraint manager • Multi-level undo/redo • GME-, paradigm-, project-specific help

  8. Design goals • Simplify metamodels (increase readability) • Reuse existing metamodels • Compose paradigms from subparadigms • Create metamodel libraries • Do NOT modify reused metamodels

  9. New features • Multi-sheet capability: • Proxy: Reference to a UML class • represents the exact same object • only attribute: abstract • New operators: • Equivalence • Implementation inheritance • Interface inheritance

  10. Equivalence (union) • Two objects are the “same”, i.e. a new object is created that is the union of the two • Represent the points where two subparadigms join together • Can be emulated by a new UML class derived from both and making the originals abstract

  11. Implementation Inheritance • Finer control over inheritance • Analogous to private inheritance in C++ • Inherits what’s “inside” a class: • Attributes • All composition relations where given class is the parent

  12. Interface Inheritance • Finer control over inheritance • Analogous to interface inheritance in Java • Inherits what’s “outside” a class: • All associations • All composition relations where given class is the child

  13. Inheritance cont’d. • Can be emulated using regular UML, but only by modifying original metamodel • The union of implementation and interface inheritance is pure UML inheritance (operators are applied sequentially in any order)

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