ADSI Extensions

An ADSI extension is a special COM object that enable a developer to extend an ADSI object. Each extension is associated with a specified class in the directory. With this extension model, developers can add methods to give more dynamic meaning to an object. In a traditional directory programming model, an object is accessed by getting and setting the object attributes. Using ADSI extensions, you can add more features to a directory object.

This section discusses the following topics:

• Benefits of Using ADSI Extensions
• ADSI Extension Architecture
• How ADSI Integrates Extensions
• What Does a Client See?
• Getting ADSI Interfaces From Your Extension
• ADSI Extension Type Libraries
• Early Binding Support
• Late Binding Support
• IADsExtension Interface
• Supporting Dual or Dispatch Interfaces
• Revisiting COM Aggregation Rules with ADSI Extensions
• Resolution of Multiple Aggregation Components Supporting the Same Interface
• Resolution of Function/Property Name Conflicts in Automation in Extensions