1 / 17

Object-Oriented Design of Spatial Entities Todd Bacastow

An approach to specify software solutions using collaborating objects, attributes, and methods. Learn the structure of classes and their unique features.

glyn
Download Presentation

Object-Oriented Design of Spatial Entities Todd Bacastow

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. Object-Oriented Design of Spatial EntitiesTodd Bacastow

  2. Object-Oriented Design • an approach used to specify the software solution in terms of collaborating objects, their attributes, and their methods.

  3. MyClassName +SomePublicAttribute : SomeType -SomePrivateAttribute : SomeType #SomeProtectedAttribute : SomeType +ClassMethodOne() +ClassMethodTwo() Responsibilities -- can optionally be described here. Parts of a Class • Classes can have four parts • Name • Attributes • Operations • Responsibilities • Classes can show visibility and types. • All parts but the Name are optional.

  4. UML Class Diagram

  5. What’s Unique About Spatial? • Topology rules – e.g., political boundaries • Semantic integrity – e.g., roads do not run through structures • User defined business rules – e.g., one way streets

  6. Geospatial Classes Symbols

  7. Geospatial Field Classes

  8. Geo-Object w/ Geometry

  9. Geo-Objects w/ geometry & topology

  10. Relationships

  11. Relationships (Cont)

  12. Cardinality

  13. Generalization (not spatial)

  14. Generalization (spatial)

  15. Aggregation (not spatial)

  16. Aggregation (spatial)

  17. Cartographic Generalization

More Related