This acts as an interface for the application service to access service extensions. The implementing class creates an instance each of all the extensions defined in the service extensions configuration file. If no extensions are defined for a particular service, the executor creates an instance of the default extension for the service. The executor also has a pair of pre and post methods for each method of the actual service. These methods in turn call the corresponding methods of all the extension classes defined for the service (extension chaining).

Naming convention

The naming convention for extension executor class is as below:

Interface : I<Service_Name>ExtExecutor

Implementation : <Service_Name>ExtExecutor

For example, consider below code sample.