1 / 14

Visualizing Design Patterns in Their Applications and Compositions

Visualizing Design Patterns in Their Applications and Compositions. Design pattern overview. A design pattern is a formally documented solution to a design problem. Patterns are used to communicate architectural knowledge, teach new design paradigms, and convey design experience

dava
Download Presentation

Visualizing Design Patterns in Their Applications and Compositions

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Visualizing Design Patterns in Their Applications and Compositions

  2. Design pattern overview • A design pattern is a formally documented solution to a design problem. • Patterns are used to communicate architectural knowledge, teach new design paradigms, and convey design experience • They are normally modeled in natural languages and visual notations (UML)

  3. Design pattern UML • Each design pattern typically contains several participants. • When the pattern is applied names are changed to suit the application domain • This means pattern information represented by the role names is lost. • When this happens it becomes difficult to identify the patterns used in the system.

  4. Design pattern

  5. UML Solutions • Several approaches have been suggested. • -Venn diagram-style annotation • -UML collaboration annotation • -Pattern:role annotation

  6. Composition of patterns Venn diagram-style

  7. UML collaboration Pattern:Role

  8. Problems with existing solutions • Static notations attached to UML diagrams • Cannot distinguish between two instantiations of the same pattern • Only applied in class diagrams not in sequence or behavioral diagrams • Do not cover the roles of operations or attributes.

  9. Previously proposed solutions • Design pattern modeling language (DPML) • Adds new symbols to UML • Design recovery frameworks • Logic based languages • Specialized version of UML meta-model

  10. New Solution • An extension to the existing UML specification through stereotypes • Tagged Values for each stereotype • role@name [instance] • Multiple tags per class are allowed.

  11. Visualization tool • On-demand visualization techniques based on coloring and mouse movement • VisDP – tool that can hide/show design pattern information on demand. • Mouse-over a class in a pattern, and all classes in that pattern turn a different color. • Pattern information overlaid over diagram

More Related