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Sun OpenDS Standard Edition 2.0 Architectural Reference

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Document Information

The Directory Server Access Control Model

Understanding the Directory Server Schema

Understanding Matching Rules

Matching Rule Description Format

Commonly Used Matching Rules

Value Normalization

Understanding Attribute Syntaxes

The Attribute Syntax Description Format

Commonly Used Attribute Syntaxes

Understanding Attribute Types

Attribute Type Description Format

Attribute Type Inheritance

Attribute Type Implementation

Understanding Object Classes

Object Class Description Format

Object Class Kinds

Object Class Inheritance

Directory Server Object Class Implementation

Understanding Name Forms

Name Form Description Format

Name Form Implementation

Understanding DIT Content Rules

DIT Content Rule Description Format

DIT Content Rule Implementation

Understanding DIT Structure Rules

DIT Structure Rule Description Format

DIT Structure Rules and Multiple Schemas

DIT Structure Rule Implementation

Understanding Matching Rule Uses

Matching Rule Use Implementation

Index Databases

Understanding Directory Server Plug-Ins

Directory Server Replication

Root Users and the Privilege Subsystem

Supported Controls and Operations

Directory Server Object Class Implementation

Object classes in the directory server do not require any custom logic, so they can be implemented as data structures that are populated from information contained in the schema configuration files, much in the same way as for attribute type definitions. All object class instances in the directory server are instances of the org.opends.server.types.ObjectClass class. Object class objects can be retrieved from the directory server schema using their OIDs or any of their human-readable names.

At the present time, the mechanism used to handle object classes varies from the LDAPv3 specification in that object classes are allowed to have at most one superior class, whereas the specification allows multiple superior classes in some cases.