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Modelling Behaviour

5.0 Describing Behaviour. Dynamic Modelling1State Diagram2Sequence Diagram (MSC)3Collaboration Diagram4Activity Diagram. 5.1State Diagram. Each Class may have an optional associated State Diagram.Developed by Harel.Incorporated into OO methods by Rumbaugh (OMT).. Example. Pop-up menu

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Modelling Behaviour

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    1. Modelling Behaviour Object Interactions System Dynamics Models

    2. 5.0 Describing Behaviour Dynamic Modelling 1 State Diagram 2 Sequence Diagram (MSC) 3 Collaboration Diagram 4 Activity Diagram

    3. 5.1 State Diagram Each Class may have an optional associated State Diagram. Developed by Harel. Incorporated into OO methods by Rumbaugh (OMT).

    4. Example Pop-up menu control

    5. Activity An activity is an operation that takes time to complete. Activities are associated with states

    6. Action An action is an instantaneous operation associated with an event. Semantics of instantaneous is ambiguous.

    7. Message Notation Synchronous: blocking call. Asynchronous: non blocking call Simple: no details about communication. Synchronous with immediate return.

    8. Nesting State Diagrams State diagrams for an Object may be nested, allowing the control mechanism to be viewed at different levels.

    9. Example: Vending Machine

    10. Example: Select Item

    11. Generalisation of States Groups of substates with common transitions can be combined into a single superstate, and inherit transitions from the superstate.

    12. Example: Transmission

    14. Dynamic Model

    15. Dynamic Model: Ignition

    18. Concurrency (cont..) Concurrency within an Object:- Concurrency within the state of a single Object arises when an object can be partitioned into subsets of attributes or links, each of which has its own state diagram.

    19. Example: Programmable Thermostat

    20. State Diagram Notation Styled on work of David Harel. Used also in OMT, Syntropy and most other OO methods. Each Class may be modelled with a STD, if important dynamic behaviour is exhibited by that Class.

    21. Modelling Behaviour Object Interactions System Dynamics Models

    22. 5.0 Describing Behaviour Dynamic Modelling 1 State Diagram 2 Sequence Diagram (MSC) 3 Collaboration Diagram 4 Activity Diagram

    23. 5.1 State Diagram Each Class may have an optional associated State Diagram. Developed by Harel. Incorporated into OO methods by Rumbaugh (OMT).

    24. Example Pop-up menu control

    25. Activity An activity is an operation that takes time to complete. Activities are associated with states

    26. Action An action is an instantaneous operation associated with an event. Semantics of instantaneous is ambiguous.

    27. Message Notation Synchronous: blocking call. Asynchronous: non blocking call Simple: no details about communication. Synchronous with immediate return.

    28. Nesting State Diagrams State diagrams for an Object may be nested, allowing the control mechanism to be viewed at different levels.

    29. Example: Vending Machine

    30. Example: Select Item

    31. Generalisation of States Groups of substates with common transitions can be combined into a single superstate, and inherit transitions from the superstate.

    32. Example: Transmission

    34. Dynamic Model

    35. Dynamic Model: Ignition

    38. Concurrency (cont..) Concurrency within an Object:- Concurrency within the state of a single Object arises when an object can be partitioned into subsets of attributes or links, each of which has its own state diagram.

    39. Example: Programmable Thermostat

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