com.grummages.app.rest.service.UsersRESTFacade.java Source code

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Here is the source code for com.grummages.app.rest.service.UsersRESTFacade.java

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package com.grummages.app.rest.service;

import javax.persistence.EntityManager;
import com.grummages.app.rest.entity.Users;
import java.net.URI;
import java.util.List;
import javax.persistence.Query;
import javax.persistence.PersistenceContext;
import javax.ws.rs.Consumes;
import javax.ws.rs.DELETE;
import javax.ws.rs.GET;
import javax.ws.rs.POST;
import javax.ws.rs.PUT;
import javax.ws.rs.Path;
import javax.ws.rs.PathParam;
import javax.ws.rs.Produces;
import javax.ws.rs.core.Response;
import org.springframework.transaction.annotation.Transactional;

/**
 *
 * @author admin
 */
@Path("v1/users")

public class UsersRESTFacade {
    @PersistenceContext(unitName = "com.grummages_GrummagesWebApp_war_1.0-SNAPSHOTPU")
    protected EntityManager entityManager;

    public UsersRESTFacade() {
    }

    @POST
    @Consumes({ "application/json" })
    @Transactional
    public Response create(Users entity) {
        entityManager.persist(entity);
        return Response.created(URI.create(entity.getUsername().toString())).build();
    }

    @PUT
    @Consumes({ "application/json" })
    @Transactional
    public void edit(Users entity) {
        entityManager.merge(entity);
    }

    @DELETE
    @Path("{id}")
    @Transactional
    public void remove(@PathParam("id") String id) {
        Users entity = entityManager.getReference(Users.class, id);
        entityManager.remove(entity);
    }

    @GET
    @Path("{id}")
    @Produces({ "application/json" })
    @Transactional
    public Users find(@PathParam("id") String id) {
        return entityManager.find(Users.class, id);
    }

    @GET
    @Produces({ "application/json" })
    @Transactional
    public List<Users> findAll() {
        return find(true, -1, -1);
    }

    @GET
    @Path("{max}/{first}")
    @Produces({ "application/json" })
    @Transactional
    public List<Users> findRange(@PathParam("max") Integer max, @PathParam("first") Integer first) {
        return find(false, max, first);
    }

    @GET
    @Path("count")
    @Produces("text/plain")
    @Transactional
    public String count() {
        try {
            Query query = entityManager.createQuery("SELECT count(o) FROM Users AS o");
            return query.getSingleResult().toString();
        } finally {
            entityManager.close();
        }
    }

    private List<Users> find(boolean all, int maxResults, int firstResult) {
        try {
            Query query = entityManager.createQuery("SELECT object(o) FROM Users AS o");
            if (!all) {
                query.setMaxResults(maxResults);
                query.setFirstResult(firstResult);
            }
            return query.getResultList();
        } finally {
            entityManager.close();
        }
    }

}