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Class definition

A class declaration corresponds to the definition of a persistent data type in ODABA. Since ODABA does not differ between classes and interfaces, a persistent data type provides intentional but also extensional features. In contrast to ODMG ODL, ODABA supports multiple class inheritance via EXTENDS relationship

A class definition consists of the class header and the class definition. Several of the class header properties are shared with other type definitions and are described in topic "Type extensions":

  • Type properties
  • Inheritance specifications

Since classes are name spaces, classes may contain local extent definitions, classes or views, again.

Subtopics

  1. Class declaration
  2. Class header definition
  3. Persistent definition
  4. Class definition (body)
  5. Class or interface features
  6. Feature or member definition
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