Advanced Customization > Info*Engine Java Adapter Development > JADK Classes and Interfaces > Common JADK Classes
  
Common JADK Classes
Several other JADK classes are commonly used.
JADKAdapter and JADKMultithreadedAdapter
JADKAdapter and JADKMultithreadedAdapter provide prototypes for developers who want to write standalone adapters. As the name suggests, JADKMultithreadedAdapter is for multi-threaded adapters and JADKAdapter is for single-threaded adapters.
For an adapter that runs coresident with Info*Engine, these adapter main classes are unnecessary because they only do some of the initializations, such as reading the properties file or log file before passing it to the SocketAccess server class. The SocketAccess server class then creates the server port based on the port defined in your LDAP directory, and then invokes the appropriate implementation class if it receives a request at this port.
RequestContext
This class provides an encapsulation of full-fledged JADK APIs that are intended to make the development process easier by hiding all of the server classes. This way, you do not have to understand much about Info*Engine classes to write your own adapter, and you can focus on the back-end APIs that implement your adapter functionalities. For a detailed API description, see JADK Structures and APIs.
AdapterWebject
This class provides a super class for all of the webjects you develop. Any webject you want to be invoked by the processRequest method has to extend this class.
The AdapterWebject class provides the following methods for you to override: init and processWebject. While the init method passes the RequestContext instance to the adapter for use with your webject, the processWebject method allows you to put in any of your adapter-specific code to implement the adapter webject functionalities. The AdapterWebject class also parses the request name from Info*Engine and builds the webject class name based on the request.
IeQueryObjects, IeCreateObjects, IeDeleteObjects, and IeUpdateObjects
These classes provide the most frequently used adapter webjects that can be used with caching and also provide a prototype for the adapter development.