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The Request Handler Chain is responsible for processing a request according to the JAX-RS specification by accepting the request, searching for the resource method to invoke, de-serializing the request entity and finally for invoking the resource method. It is responsible for invoking sub-resource locators by moving up and down the chain as needed. A Request handler is a class that implements the comorg.hpapache.wink.server.handlers.RequestHandler interface.

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The Response Handler Chain is responsible for handling the object returned from invoking a resource method or sub-resource method according to the JAX-RS specification. It is responsible for determining the response status code, selecting the response media type and for serializing the response entity.
A Response handler is a class that implements the comorg.hpapache.wink.server.handlers.ResponseHandler interface.

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