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• Resource.java

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org.glassfish.jersey.server.model.Resource Maven / Gradle / Ivy

/*
 * Copyright (c) 2010, 2019 Oracle and/or its affiliates. All rights reserved.
 *
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License v. 2.0, which is available at
 * http://www.eclipse.org/legal/epl-2.0.
 *
 * This Source Code may also be made available under the following Secondary
 * Licenses when the conditions for such availability set forth in the
 * Eclipse Public License v. 2.0 are satisfied: GNU General Public License,
 * version 2 with the GNU Classpath Exception, which is available at
 * https://www.gnu.org/software/classpath/license.html.
 *
 * SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0
 */

package org.glassfish.jersey.server.model;

import java.lang.reflect.Modifier;
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashSet;
import java.util.IdentityHashMap;
import java.util.Iterator;
import java.util.LinkedHashSet;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.stream.Collectors;

import javax.ws.rs.Path;
import javax.ws.rs.core.MultivaluedHashMap;
import javax.ws.rs.core.MultivaluedMap;

import org.glassfish.jersey.Severity;
import org.glassfish.jersey.internal.Errors;
import org.glassfish.jersey.internal.guava.Preconditions;
import org.glassfish.jersey.internal.util.collection.Value;
import org.glassfish.jersey.internal.util.collection.Values;
import org.glassfish.jersey.server.internal.LocalizationMessages;
import org.glassfish.jersey.server.model.internal.ModelHelper;
import org.glassfish.jersey.uri.PathPattern;

/**
 * Model of a single resource component.
 * 

 * Resource component model represents a collection of {@link ResourceMethod methods}
 * grouped under the same parent request path template. {@code Resource} class is also
 * the main entry point to the programmatic resource modeling API that provides ability
 * to programmatically extend the existing JAX-RS annotated resource classes or build
 * new resource models that may be utilized by Jersey runtime.
 * 
 * 

 * For example:
 * 
 * @Path("hello")
 * public class HelloResource {
 *      @GET
 *      @Produces("text/plain")
 *      public String sayHello() {
 *          return "Hello!";
 *      }
 * }
 *
 * ...
 *
 * // Register the annotated resource.
 * ResourceConfig resourceConfig = new ResourceConfig(HelloResource.class);
 *
 * // Add new "hello2" resource using the annotated resource class
 * // and overriding the resource path.
 * Resource.Builder resourceBuilder =
 *         Resource.builder(HelloResource.class, new LinkedList<ResourceModelIssue>())
 *         .path("hello2");
 *
 * // Add a new (virtual) sub-resource method to the "hello2" resource.
 * resourceBuilder.addChildResource("world").addMethod("GET")
 *         .produces("text/plain")
 *         .handledBy(new Inflector<Request, String>() {
 *                 @Override
 *                 public String apply(Request request) {
 *                     return "Hello World!";
 *                 }
 *         });
 *
 * // Register the new programmatic resource in the application's configuration.
 * resourceConfig.registerResources(resourceBuilder.build());
 * 
 * The following table illustrates the supported requests and provided responses
 * for the application configured in the example above.
 * 
 * 
 * 
 * 
 * 
 * 
 * 
 * 
 * 
 * 
 * 
 * 
 * 
 * 
Request
Response
Method invoked
{@code "GET /hello"}
{@code "Hello!"}
{@code HelloResource.sayHello()}
{@code "GET /hello2"}
{@code "Hello!"}
{@code HelloResource.sayHello()}
{@code "GET /hello2/world"}
{@code "Hello World!"}
{@code Inflector.apply()}
 * 

 *
 * @author Marek Potociar
 * @author Miroslav Fuksa
 */
public final class Resource implements Routed, ResourceModelComponent {

    /**
     * Immutable resource data holder.
     */
    private static class Data {

        private final List names;
        private final String path;
        private final PathPattern pathPattern;

        private final List resourceMethods;
        private final ResourceMethod.Data subResourceLocator;
        private final List childResources;

        private final Set> handlerClasses;
        private final Set