Object Oriented Role Analysis and Modeling

The Object Oriented Role Analysis and Modeling (OOram) is a method, based on the concept of role, for performing object-oriented modeling. OOram is a precursor for the Unified Modeling Language (UML).[1]

Originally (1989) coined Object Oriented Role Analysis, Synthesis and Structuring (OORASS), the method focuses on describing patterns of interaction without connecting the interaction to particular objects/instances. OOram was originally developed by Trygve Reenskaug (1996), a professor at the University of Oslo and the founder of the Norwegian IT company Taskon.

Enterprise models created according to OOram may have a number of views, with each view presenting certain aspects of a model.[2] The following ten views are proposed[3]:

  1. Area of concern view: Textual description of a phenomenon represented in the role model.
  2. Stimulus-response view: Describes how environment roles may trigger activities in the organization (stimulus), together with the effect (response).
  3. Role list view: List describing all roles of a role model together with attributes and textual explanation.
  4. Semantic view: Describes meaning of roles and relationships between roles.
  5. Collaboration view: Describes patterns of roles and message paths.
  6. Interface view: Describes all messages that can be sent along a message path.
  7. Scenario view: Provides a sample sequence of messages flowing between roles (a concrete example).
  8. Process view: Describes data flow between roles and associated activities performed by the roles.
  9. State diagram view: For each role, the legal states can be described together with messages that triggers transitions.
  10. Method specification view: Describes what messages to send for each method belonging to a role. May also specify procedures to perform.

OOram suggests a varied mix of formal and informal notations and languages for representing and communicating models. Which view to use depends upon the needs in a particular situation.[2]

See also

References

  1. ^ Reenskaug, Trygve (1996). "Working with Objects: OOram Framework Design Principles". Taskon, Norway. http://home.ifi.uio.no/trygver/1996/Frameworks/frameworks.pdf.  (Presented at OOPSLA 1996 Workshop: Exploration of Framework Design Principles)
  2. ^ a b Terje Totland (1997). 5.2.8 Object-Oriented role analysis and modeling (OOram) Thesis, Norwegian University of Science and Technology (NTNU), Trondheim.
  3. ^ (Reenskaug, 1996:60)

Further reading