usersresource.java

来自「resetful样式的ws样例,一种面向资源的webservices服务」· Java 代码 · 共 96 行

/*
 *
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 * 
 * Copyright 1997-2007 Sun Microsystems, Inc. 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 https://jersey.dev.java.net/CDDL+GPL.html
 * or jersey/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 jersey/legal/LICENSE.txt.
 * Sun designates this particular file as subject to the "Classpath" exception
 * as provided by Sun in the GPL Version 2 section of the License file that
 * accompanied this code.  If applicable, add the following below the License
 * Header, with the fields enclosed by brackets [] replaced by your own
 * identifying information: "Portions Copyrighted [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 com.sun.jersey.samples.bookmark.resources;

import com.sun.jersey.samples.bookmark.entities.UserEntity;
import java.net.URI;
import java.util.List;
import javax.persistence.EntityManagerFactory;
import javax.persistence.PersistenceUnit;
import javax.ws.rs.GET;
import javax.ws.rs.ProduceMime;
import javax.ws.rs.Path;
import javax.ws.rs.PathParam;
import javax.ws.rs.core.Context;
import javax.ws.rs.core.UriBuilder;
import javax.ws.rs.core.UriInfo;
import org.codehaus.jettison.json.JSONArray;


/**
 *
 * @author japod
 */
@Path("/users/")
//@Views({"index.jsp"})
public class UsersResource {
    
    @Context UriInfo uriInfo;    

    @PersistenceUnit(unitName = "BookmarkPU")
    EntityManagerFactory emf;

    /** Creates a new instance of Users */
    public UsersResource() {
    }
    
    public List<UserEntity> getUsers() {
        return emf.createEntityManager().createQuery("SELECT u from UserEntity u").getResultList();
    }
    
    @Path("{userid}/")
    public UserResource getUser(@PathParam("userid") String userid) {
        return new UserResource(uriInfo, emf.createEntityManager(), userid);
    }

    @GET
    @ProduceMime("application/json")
    public JSONArray getUsersAsJsonArray() {
        JSONArray uriArray = new JSONArray();
        UriBuilder ub = null;
        for (UserEntity userEntity : getUsers()) {
            ub = (ub == null) ? uriInfo.getAbsolutePathBuilder() : ub.clone();
            URI userUri = ub.
                    path(userEntity.getUserid()).
                    build();
            uriArray.put(userUri.toASCIIString());
        }
        return uriArray;
    }
}