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/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
* Copyright (c) 2011-2012 Oracle and/or its affiliates. All rights reserved.
*
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* General Public License Version 2 only ("GPL") or the Common Development
* and Distribution License("CDDL") (collectively, the "License"). You
* may not use this file except in compliance with the License. You can
* obtain a copy of the License at
* http://glassfish.java.net/public/CDDL+GPL_1_1.html
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* file and include the License file at packager/legal/LICENSE.txt.
*
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package org.glassfish.jersey.server.model;
import java.lang.reflect.InvocationHandler;
import java.lang.reflect.Type;
import java.util.List;
import javax.ws.rs.core.GenericEntity;
import javax.ws.rs.core.Request;
import javax.ws.rs.core.Response;
import javax.inject.Inject;
import org.glassfish.jersey.internal.ProcessingException;
import org.glassfish.jersey.server.spi.internal.ParameterValueHelper;
import org.glassfish.jersey.server.spi.internal.ResourceMethodDispatcher;
import org.glassfish.hk2.api.Factory;
import org.glassfish.hk2.api.ServiceLocator;
/**
* An implementation of {@link ResourceMethodDispatcher.Provider} that
* creates instances of {@link ResourceMethodDispatcher}.
*
* @author Paul Sandoz
* @author Marek Potociar (marek.potociar at oracle.com)
*/
class JavaResourceMethodDispatcherProvider implements ResourceMethodDispatcher.Provider {
@Inject
private ServiceLocator serviceLocator;
@Override
public ResourceMethodDispatcher create(Invocable resourceMethod, InvocationHandler invocationHandler) {
final List> valueProviders = resourceMethod.getValueProviders(serviceLocator);
final Class returnType = resourceMethod.getHandlingMethod().getReturnType();
if (Response.class.isAssignableFrom(returnType)) {
return new ResponseOutInvoker(resourceMethod, invocationHandler, valueProviders);
// TODO should we support JResponse?
// } else if (JResponse.class.isAssignableFrom(returnType)) {
// return new JResponseOutInvoker(resourceMethod, pp, invocationHandler);
} else if (returnType != void.class) {
if (returnType == Object.class || GenericEntity.class.isAssignableFrom(returnType)) {
return new ObjectOutInvoker(resourceMethod, invocationHandler, valueProviders);
} else {
return new TypeOutInvoker(resourceMethod, invocationHandler, valueProviders);
}
} else {
return new VoidOutInvoker(resourceMethod, invocationHandler, valueProviders);
}
}
/**
* Get the application-configured HK2 service locator.
*
* @return application-configured HK2 service locator.
*/
final ServiceLocator getServiceLocator() {
return serviceLocator;
}
private static abstract class AbstractMethodParamInvoker extends AbstractJavaResourceMethodDispatcher {
private final List> valueProviders;
public AbstractMethodParamInvoker(
Invocable resourceMethod,
InvocationHandler handler,
List> valueProviders) {
super(resourceMethod, handler);
this.valueProviders = valueProviders;
}
final Object[] getParamValues() {
return ParameterValueHelper.getParameterValues(valueProviders);
}
}
private static final class VoidOutInvoker extends AbstractMethodParamInvoker {
public VoidOutInvoker(
Invocable resourceMethod,
InvocationHandler handler,
List> valueProviders) {
super(resourceMethod, handler, valueProviders);
}
@Override
protected Response doDispatch(Object resource, Request request) throws ProcessingException {
invoke(resource, getParamValues());
return Response.noContent().build();
}
}
private static final class ResponseOutInvoker extends AbstractMethodParamInvoker {
public ResponseOutInvoker(
Invocable resourceMethod,
InvocationHandler handler,
List> valueProviders) {
super(resourceMethod, handler, valueProviders);
}
@Override
protected Response doDispatch(Object resource, Request request) throws ProcessingException {
return Response.class.cast(invoke(resource, getParamValues()));
}
}
private static final class ObjectOutInvoker extends AbstractMethodParamInvoker {
public ObjectOutInvoker(
Invocable resourceMethod,
InvocationHandler handler,
List> valueProviders) {
super(resourceMethod, handler, valueProviders);
}
@Override
protected Response doDispatch(Object resource, Request request) throws ProcessingException {
final Object o = invoke(resource, getParamValues());
if (o instanceof Response) {
return Response.class.cast(o);
// } else if (o instanceof JResponse) {
// context.getResponseContext().setResponse(((JResponse)o).toResponse());
} else if (o != null) {
return Response.ok().entity(o).build();
} else {
return Response.noContent().build();
}
}
}
private static final class TypeOutInvoker extends AbstractMethodParamInvoker {
private final Type t;
public TypeOutInvoker(
Invocable resourceMethod,
InvocationHandler handler,
List> valueProviders) {
super(resourceMethod, handler, valueProviders);
this.t = resourceMethod.getHandlingMethod().getGenericReturnType();
}
@Override
protected Response doDispatch(Object resource, Request request) throws ProcessingException {
final Object o = invoke(resource, getParamValues());
if (o != null) {
Response response = Response.ok().entity(o).build();
// TODO set the method return Java type to the proper context.
// Response r = new ResponseBuilderImpl().
// entityWithType(o, t).status(200).build();
return response;
} else {
return Response.noContent().build();
}
}
}
}
