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Plug & Play Adapters

Plug & Play Adapters. Adapter = “adapter” AdapterName “{“ <ground> CollabName <super> CollabName List(MemberDefinition) List(AdaptClause) ”}”. AdaptClause = <ground> ClassName “as” <super> ClassName AdaptationBody. AdaptationBody = List(MethodDefinition). Plug & Play Adapters.

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Plug & Play Adapters

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  1. Plug & Play Adapters Adapter = “adapter” AdapterName “{“ <ground> CollabName <super> CollabName List(MemberDefinition) List(AdaptClause) ”}”. AdaptClause = <ground> ClassName “as” <super> ClassName AdaptationBody. AdaptationBody = List(MethodDefinition).

  2. Plug & Play Adapters provides super collaboration Y requires Adapter provides ground collaboration X requires

  3. Plug & Play Adapters: they are partitioned provides super collaboration Y1 Y requires XY Adapter provides ground collaboration X1 X requires

  4. Why partitioning? • When we implement the required interface of Y, we might want to use the provided interface of X1 and Y1. Why is this not needed? • Mira writes: in XY part of connector all public provided X and Y definitions are visible. Why cannot we use the provided X1 definitions? Why are they not needed?

  5. Why partitioning? • I argue that implementing the required interface of Y may require services of multiple participants of the ground collaboration. Example (in DJ): • class Y {Z required() { return TraversalGraph.compute(cd, new Strategy(“from Y to Z”)).fetch();} may traverse through several participants.

  6. Personalities • By partitioning the adapters we say that X + XY is a personality that requires exactly what Y provides. Therefore Y personifies X + XY.

  7. Subclasses X as Y XY is equivalent to class X extends Y { Xbody;XYbody} • X gets the provided interface of Y • The methods that Y requires are provided in subclass X.

  8. Proposal • In XY part of connector all public provided Y methods and all provided methods of ground collaboration are visible.

  9. Collaboration Refinement provides super collaboration Y requires provides more May have more participants, including hidden participants. sub collaboration X requires less

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