org.glassfish.jersey.server.model
Class AbstractJavaResourceMethodDispatcher

java.lang.Object
  org.glassfish.jersey.server.model.AbstractJavaResourceMethodDispatcher

All Implemented Interfaces:

ResourceMethodDispatcher

public abstract class AbstractJavaResourceMethodDispatcher
extends Object
implements ResourceMethodDispatcher

Abstract resource method dispatcher that provides skeleton implementation of dispatching requests to a particular Java method using supplied Java method invocation handler.

Author:

Marek Potociar (marek.potociar at oracle.com)

Nested Class Summary

Nested classes/interfaces inherited from interface org.glassfish.jersey.server.spi.internal.ResourceMethodDispatcher

ResourceMethodDispatcher.Provider

Constructor Summary

protected

AbstractJavaResourceMethodDispatcher(InvocableResourceMethod resourceMethod, InvocationHandler methodHandler) Initialize common java resource method dispatcher structures.

Method Summary

javax.ws.rs.core.Response	dispatch(Object resource, javax.ws.rs.core.Request request) Reflectively dispatch a request to the underlying invocable resource method via the configured invocation handler using the provided resource class instance.
protected abstract javax.ws.rs.core.Response	doDispatch(Object resource, javax.ws.rs.core.Request request) Dispatching functionality to be implemented by a concrete dispatcher implementation sub-class.
protected Object	invoke(Object resource, Object... args) Use the underlying invocation handler to invoke the underlying Java method with the supplied input method argument values on a given resource instance.
String	toString()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

AbstractJavaResourceMethodDispatcher

protected AbstractJavaResourceMethodDispatcher(InvocableResourceMethod resourceMethod,
                                               InvocationHandler methodHandler)

Initialize common java resource method dispatcher structures.

Parameters:

resourceMethod - invocable resource class Java method.

methodHandler - method invocation handler.

Method Detail

dispatch

public final javax.ws.rs.core.Response dispatch(Object resource,
                                                javax.ws.rs.core.Request request)
                                         throws ProcessingException

Description copied from interface: ResourceMethodDispatcher

Reflectively dispatch a request to the underlying invocable resource method via the configured invocation handler using the provided resource class instance.

In summary, the main job of the dispatcher is to convert a request into an array of the Java method input parameters and subsequently convert the returned response of an arbitrary Java type to a JAX-RS response instance.

When the method is invoked, the dispatcher will extract the Java method information from the invocable resource method and use the information to retrieve the required input parameters from either the request instance or any other available run-time information. Once the set of input parameter values is computed, the underlying invocation handler instance is invoked to process (invoke) the Java resource method with the computed input parameter values. The returned response is subsequently converted into a JAX-RS Response type and returned from the dispatcher.

It is assumed that the supplied resource implements the invocable method. Dispatcher implementation should not need to do any additional checks in that respect.

Specified by:

dispatch in interface ResourceMethodDispatcher

Parameters:

resource - the resource class instance.

request - request to be dispatched.

Returns:

response for the dispatched request.

Throws:

ProcessingException - (possibly mappable) container exception that will be handled by the Jersey server container.

doDispatch

protected abstract javax.ws.rs.core.Response doDispatch(Object resource,
                                                        javax.ws.rs.core.Request request)
                                                 throws ProcessingException

Dispatching functionality to be implemented by a concrete dispatcher implementation sub-class.

Parameters:

resource - resource class instance.

request - request to be dispatched.

Returns:

response for the dispatched request.

Throws:

ProcessingException

See Also:

ResourceMethodDispatcher.dispatch(java.lang.Object, javax.ws.rs.core.Request)

invoke

protected final Object invoke(Object resource,
                              Object... args)
                       throws ProcessingException

Use the underlying invocation handler to invoke the underlying Java method with the supplied input method argument values on a given resource instance.

Parameters:

resource - resource class instance.

args - input argument values for the invoked Java method.

Returns:

invocation result.

Throws:

ProcessingException - (possibly mappable) container exception in case the invocation failed.

toString

public String toString()

Overrides:

toString in class Object