| Interface | Description | 
|---|---|
| RequestHandler | A service invoked by  CayenneFilterthat provides a callback mechanism to bind
 appropriate ObjectContext to the request thread, handle transactions, etc. | 
| Class | Description | 
|---|---|
| CayenneFilter | A filter that creates a Cayenne server runtime, possibly including custom modules. | 
| SessionContextRequestHandler | Default implementation of the  RequestHandlerthat stores per-userObjectContextin a web session and binds it to request thread. | 
| StatelessContextRequestHandler | Stateless implementation of  RequestHandlerthat creates a newObjectContextfor each request and binds it to the request thread. | 
| WebConfiguration | A class that provides access to common Cayenne web configuration parameters retrieved
 either from a FilterConfig or a ServletConfig configuration. | 
| WebModule | |
| WebUtil | A helper class to retrieve and store  CayenneRuntimein theServletContext. | 
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