MovieFun REST

package org.superbiz.moviefun.rest;

import javax.ws.rs.ApplicationPath;
import javax.ws.rs.core.Application;
import java.util.Arrays;
import java.util.HashSet;
import java.util.Set;

@ApplicationPath("/rest")
public class ApplicationConfig extends Application {

    @Override
    @SuppressWarnings("unchecked")
    public Set<Class<?>> getClasses() {
        return new HashSet<Class<?>>(Arrays.asList(LoadRest.class, MoviesRest.class));
    }
}

package org.superbiz.moviefun.rest;

import org.superbiz.moviefun.Movie;
import org.superbiz.moviefun.MoviesBean;

import javax.ejb.EJB;
import javax.ws.rs.POST;
import javax.ws.rs.Path;

@Path("load")
public class LoadRest {
    @EJB
    private MoviesBean moviesBean;

    @POST
    public void load() {
        moviesBean.addMovie(new Movie("Wedding Crashers", "David Dobkin", "Comedy", 7, 2005));
        moviesBean.addMovie(new Movie("Starsky & Hutch", "Todd Phillips", "Action", 6, 2004));
        moviesBean.addMovie(new Movie("Shanghai Knights", "David Dobkin", "Action", 6, 2003));
        moviesBean.addMovie(new Movie("I-Spy", "Betty Thomas", "Adventure", 5, 2002));
        moviesBean.addMovie(new Movie("The Royal Tenenbaums", "Wes Anderson", "Comedy", 8, 2001));
        moviesBean.addMovie(new Movie("Zoolander", "Ben Stiller", "Comedy", 6, 2001));
        moviesBean.addMovie(new Movie("Shanghai Noon", "Tom Dey", "Comedy", 7, 2000));
    }

}

package org.superbiz.moviefun.rest;

import org.superbiz.moviefun.Movie;
import org.superbiz.moviefun.MoviesBean;

import javax.ejb.EJB;
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.QueryParam;
import javax.ws.rs.core.MediaType;
import java.util.List;

@Path("movies")
@Produces({"application/json"})
public class MoviesRest {

    @EJB
    private MoviesBean service;

    @GET
    @Path("{id}")
    public Movie find(@PathParam("id") Long id) {
        return service.find(id);
    }

    @GET
    public List<Movie> getMovies(@QueryParam("first") Integer first, @QueryParam("max") Integer max,
                                 @QueryParam("field") String field, @QueryParam("searchTerm") String searchTerm) {
        return service.getMovies(first, max, field, searchTerm);
    }

    @POST
    @Consumes("application/json")
    public Movie addMovie(Movie movie) {
        service.addMovie(movie);
        return movie;
    }

    @PUT
    @Path("{id}")
    @Consumes("application/json")
    public Movie editMovie(Movie movie) {
        service.editMovie(movie);
        return movie;
    }

    @DELETE
    @Path("{id}")
    public void deleteMovie(@PathParam("id") long id) {
        service.deleteMovie(id);
    }

    @GET
    @Path("count")
    @Produces(MediaType.TEXT_PLAIN)
    public int count(@QueryParam("field") String field, @QueryParam("searchTerm") String searchTerm) {
        return service.count(field, searchTerm);
    }

}

package org.superbiz.moviefun;

import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.xml.bind.annotation.XmlRootElement;

@Entity
@XmlRootElement(name = "movie")
public class Movie {
    @Id
    @GeneratedValue(strategy = GenerationType.AUTO)
    private long id;

    private String director;
    private String title;
    private int year;
    private String genre;
    private int rating;

    public Movie() {
    }

    public Movie(String title, String director, String genre, int rating, int year) {
        this.director = director;
        this.title = title;
        this.year = year;
        this.genre = genre;
        this.rating = rating;
    }

    public Movie(String director, String title, int year) {
        this.director = director;
        this.title = title;
        this.year = year;
    }

    public long getId() {
        return id;
    }

    public void setId(long id) {
        this.id = id;
    }

    public String getDirector() {
        return director;
    }

    public void setDirector(String director) {
        this.director = director;
    }

    public String getTitle() {
        return title;
    }

    public void setTitle(String title) {
        this.title = title;
    }

    public int getYear() {
        return year;
    }

    public void setYear(int year) {
        this.year = year;
    }

    public String getGenre() {
        return genre;
    }

    public void setGenre(String genre) {
        this.genre = genre;
    }

    public int getRating() {
        return rating;
    }

    public void setRating(int rating) {
        this.rating = rating;
    }
}

package org.superbiz.moviefun;

import javax.ejb.Stateless;
import javax.persistence.EntityManager;
import javax.persistence.PersistenceContext;
import javax.persistence.TypedQuery;
import javax.persistence.criteria.CriteriaBuilder;
import javax.persistence.criteria.CriteriaQuery;
import javax.persistence.criteria.Path;
import javax.persistence.criteria.Predicate;
import javax.persistence.criteria.Root;
import javax.persistence.metamodel.EntityType;
import java.util.List;

@Stateless
public class MoviesBean {

    @PersistenceContext(unitName = "movie-unit")
    private EntityManager entityManager;

    public Movie find(Long id) {
        return entityManager.find(Movie.class, id);
    }

    public void addMovie(Movie movie) {
        entityManager.persist(movie);
    }

    public void editMovie(Movie movie) {
        entityManager.merge(movie);
    }

    public void deleteMovie(long id) {
        Movie movie = entityManager.find(Movie.class, id);
        entityManager.remove(movie);
    }

    public List<Movie> getMovies(Integer firstResult, Integer maxResults, String field, String searchTerm) {
        CriteriaBuilder qb = entityManager.getCriteriaBuilder();
        CriteriaQuery<Movie> cq = qb.createQuery(Movie.class);
        Root<Movie> root = cq.from(Movie.class);
        EntityType<Movie> type = entityManager.getMetamodel().entity(Movie.class);
        if (field != null && searchTerm != null && !"".equals(field.trim()) && !"".equals(searchTerm.trim())) {
            Path<String> path = root.get(type.getDeclaredSingularAttribute(field.trim(), String.class));
            Predicate condition = qb.like(path, "%" + searchTerm.trim() + "%");
            cq.where(condition);
        }
        TypedQuery<Movie> q = entityManager.createQuery(cq);
        if (maxResults != null) {
            q.setMaxResults(maxResults);
        }
        if (firstResult != null) {
            q.setFirstResult(firstResult);
        }
        return q.getResultList();
    }

    public int count(String field, String searchTerm) {
        CriteriaBuilder qb = entityManager.getCriteriaBuilder();
        CriteriaQuery<Long> cq = qb.createQuery(Long.class);
        Root<Movie> root = cq.from(Movie.class);
        EntityType<Movie> type = entityManager.getMetamodel().entity(Movie.class);
        cq.select(qb.count(root));
        if (field != null && searchTerm != null && !"".equals(field.trim()) && !"".equals(searchTerm.trim())) {
            Path<String> path = root.get(type.getDeclaredSingularAttribute(field.trim(), String.class));
            Predicate condition = qb.like(path, "%" + searchTerm.trim() + "%");
            cq.where(condition);
        }
        return entityManager.createQuery(cq).getSingleResult().intValue();
    }

    public void clean() {
        entityManager.createQuery("delete from Movie").executeUpdate();
    }
}