If your plug-in defines and manipulates its own resource types, you may have special requirements for searching a resource. For example, the Java IDE plug-in implements a search engine specialized for Java files.
The search plug-in allows you to add a specialized page describing your search to the workbench search dialog. This allows you to obtain any specialized information needed from the user and perform a search using your plug-in's internal model.
You should also provide a specialized class for displaying the search results. Abstract implementations of a search result page are provided to give you a head start.
These services are contributed using search plug-in extension points.