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A bundle project producing JAX-RS RI bundles. The primary artifact is an "all-in-one" OSGi-fied JAX-RS RI bundle (jaxrs-ri.jar). Attached to that are two compressed JAX-RS RI archives. The first archive (jaxrs-ri.zip) consists of binary RI bits and contains the API jar (under "api" directory), RI libraries (under "lib" directory) as well as all external RI dependencies (under "ext" directory). The secondary archive (jaxrs-ri-src.zip) contains buildable JAX-RS RI source bundle and contains the API jar (under "api" directory), RI sources (under "src" directory) as well as all external RI dependencies (under "ext" directory). The second archive also contains "build.xml" ANT script that builds the RI sources. To build the JAX-RS RI simply unzip the archive, cd to the created jaxrs-ri directory and invoke "ant" from the command line.

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/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright (c) 2011-2013 Oracle and/or its affiliates. All rights reserved.
 *
 * The contents of this file are subject to the terms of either the GNU
 * 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
 * or packager/legal/LICENSE.txt.  See the License for the specific
 * language governing permissions and limitations under the License.
 *
 * When distributing the software, include this License Header Notice in each
 * file and include the License file at packager/legal/LICENSE.txt.
 *
 * GPL Classpath Exception:
 * Oracle designates this particular file as subject to the "Classpath"
 * exception as provided by Oracle in the GPL Version 2 section of the License
 * file that accompanied this code.
 *
 * Modifications:
 * If applicable, add the following below the License Header, with the fields
 * enclosed by brackets [] replaced by your own identifying information:
 * "Portions Copyright [year] [name of copyright owner]"
 *
 * Contributor(s):
 * If you wish your version of this file to be governed by only the CDDL or
 * only the GPL Version 2, indicate your decision by adding "[Contributor]
 * elects to include this software in this distribution under the [CDDL or GPL
 * Version 2] license."  If you don't indicate a single choice of license, a
 * recipient has the option to distribute your version of this file under
 * either the CDDL, the GPL Version 2 or to extend the choice of license to
 * its licensees as provided above.  However, if you add GPL Version 2 code
 * and therefore, elected the GPL Version 2 license, then the option applies
 * only if the new code is made subject to such option by the copyright
 * holder.
 */
package org.glassfish.jersey.server.model.internal;

import java.lang.reflect.InvocationHandler;
import java.lang.reflect.Type;
import java.util.List;

import javax.ws.rs.ProcessingException;
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.server.model.Invocable;
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();

        ResourceMethodDispatcher resourceMethodDispatcher;
        if (Response.class.isAssignableFrom(returnType)) {
            resourceMethodDispatcher = 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)) {
                resourceMethodDispatcher = new ObjectOutInvoker(resourceMethod, invocationHandler, valueProviders);
            } else {
                resourceMethodDispatcher = new TypeOutInvoker(resourceMethod, invocationHandler, valueProviders);
            }
        } else {
            resourceMethodDispatcher = new VoidOutInvoker(resourceMethod, invocationHandler, valueProviders);
        }

        // Inject validator.
        serviceLocator.inject(resourceMethodDispatcher);

        return resourceMethodDispatcher;
    }

    /**
     * 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();
            }
        }
    }
}




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