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Merge pull request #201 from kubamarchwicki/jpa-listeners-injection
JPA listener injection test
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‎jpa/listeners-injection/pom.xml‎

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<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
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<modelVersion>4.0.0</modelVersion>
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<parent>
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<groupId>org.javaee7.jpa</groupId>
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<artifactId>jpa-samples</artifactId>
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<version>1.0-SNAPSHOT</version>
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<relativePath>../pom.xml</relativePath>
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</parent>
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<artifactId>listeners-injection</artifactId>
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<packaging>war</packaging>
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<name>JPA Listeners Injection</name>
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<description>JPA 2.1 Entity Listeners injection</description>
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</project>

‎jpa/listeners-injection/src/main/java/org/javaee7/jpa/listeners/Movie.java‎

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package org.javaee7.jpa.listeners;
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import java.io.Serializable;
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import javax.persistence.Entity;
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import javax.persistence.EntityListeners;
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import javax.persistence.Id;
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import javax.persistence.NamedQueries;
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import javax.persistence.NamedQuery;
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import javax.persistence.Table;
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import javax.persistence.Transient;
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import javax.validation.constraints.NotNull;
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import javax.validation.constraints.Size;
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import javax.xml.bind.annotation.XmlRootElement;
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/**
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* @author Arun Gupta
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*/
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@Entity
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@Table(name = "MOVIE_LISTENER")
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@XmlRootElement
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@NamedQueries({
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@NamedQuery(name = Movie.FIND_BY_NAME, query = "SELECT m FROM Movie m WHERE m.name = :name")
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})
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@EntityListeners(MovieListener.class)
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public class Movie implements Serializable {
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private static final long serialVersionUID = 1L;
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public static final String FIND_BY_NAME = "Movie.findByName";
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@Id
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@NotNull
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private Integer id;
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@NotNull
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@Size(min = 1, max = 50)
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private String name;
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@NotNull
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@Size(min = 1, max = 200)
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private String actors;
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@Transient
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private Integer rating;
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public Movie() {
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}
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public Movie(Integer id) {
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this.id = id;
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}
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public Movie(Integer id, String name, String actors) {
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this.id = id;
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this.name = name;
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this.actors = actors;
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}
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public Integer getId() {
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return id;
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}
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public void setId(Integer id) {
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this.id = id;
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}
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public String getName() {
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return name;
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}
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public void setName(String name) {
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this.name = name;
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}
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public String getActors() {
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return actors;
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}
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public void setActors(String actors) {
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this.actors = actors;
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}
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public Integer getRating() {
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return rating;
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}
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public void setRating(Integer rating) {
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this.rating = rating;
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}
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@Override
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public boolean equals(Object o) {
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if (this == o) { return true; }
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if (o == null || getClass() != o.getClass()) { return false; }
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Movie movie = (Movie) o;
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return id.equals(movie.id);
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}
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@Override
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public int hashCode() {
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return id.hashCode();
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}
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@Override
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public String toString() {
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return name;
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}
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}

‎jpa/listeners-injection/src/main/java/org/javaee7/jpa/listeners/MovieBean.java‎

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package org.javaee7.jpa.listeners;
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import javax.ejb.Stateless;
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import javax.persistence.EntityManager;
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import javax.persistence.PersistenceContext;
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/**
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* @author Kuba Marchwicki
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*/
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@Stateless
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public class MovieBean {
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@PersistenceContext
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private EntityManager em;
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public Movie getMovieByName(String name) {
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return em.createNamedQuery(Movie.FIND_BY_NAME, Movie.class)
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.setParameter("name", name)
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.getSingleResult();
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}
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}

‎jpa/listeners-injection/src/main/java/org/javaee7/jpa/listeners/MovieListener.java‎

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package org.javaee7.jpa.listeners;
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import javax.ejb.EJB;
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import javax.persistence.PostLoad;
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/**
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* @author Kuba Marchwicki
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*/
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public class MovieListener {
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@EJB
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RatingService service;
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@PostLoad
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public void loadMovieRating(Movie movie) {
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Integer rating = service.movieRating(movie.getName());
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movie.setRating(rating);
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}
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}

‎jpa/listeners-injection/src/main/java/org/javaee7/jpa/listeners/Rating.java‎

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package org.javaee7.jpa.listeners;
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import javax.persistence.Entity;
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import javax.persistence.Id;
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import javax.persistence.NamedQueries;
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import javax.persistence.NamedQuery;
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import javax.persistence.Table;
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import javax.validation.constraints.NotNull;
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import javax.validation.constraints.Size;
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import java.io.Serializable;
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/**
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* @author Kuba Marchwicki
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*/
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@Entity
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@Table(name = "MOVIE_RATINGS")
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@NamedQueries({
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@NamedQuery(name = Rating.FIND_BY_NAME, query = "SELECT r FROM Rating r WHERE r.name = :name")
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})
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public class Rating implements Serializable {
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private static final long serialVersionUID = 1L;
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public static final String FIND_BY_NAME = "Rating.findByName";
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@Id
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@NotNull
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private Integer id;
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@NotNull
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@Size(min = 1, max = 50)
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private String name;
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@NotNull
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private Integer rating;
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public Integer getId() {
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return id;
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}
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public void setId(Integer id) {
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this.id = id;
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}
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public String getName() {
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return name;
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}
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public void setName(String name) {
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this.name = name;
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}
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public Integer getRating() {
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return rating;
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}
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public void setRating(Integer rating) {
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this.rating = rating;
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}
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@Override
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public boolean equals(Object o) {
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if (this == o) return true;
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if (!(o instanceof Rating)) return false;
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Rating ratings = (Rating) o;
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return id.equals(ratings.id);
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}
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@Override
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public int hashCode() {
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return id.hashCode();
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}
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@Override
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public String toString() {
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return name;
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}
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}

‎jpa/listeners-injection/src/main/java/org/javaee7/jpa/listeners/RatingService.java‎

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package org.javaee7.jpa.listeners;
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import javax.ejb.Stateless;
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import javax.persistence.EntityManager;
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import javax.persistence.PersistenceContext;
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/**
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* @author Kuba Marchwicki
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*/
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@Stateless
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public class RatingService {
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@PersistenceContext
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private EntityManager em;
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public Integer movieRating(String name) {
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return em.createNamedQuery(Rating.FIND_BY_NAME, Rating.class)
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.setParameter("name", name)
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.getSingleResult()
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.getRating();
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}
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}

‎jpa/listeners-injection/src/main/resources/META-INF/create.sql‎

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CREATE TABLE MOVIE_LISTENER("ID" INTEGER not null primary key, "NAME" VARCHAR(50) not null, "ACTORS" VARCHAR(200) not null)
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CREATE TABLE MOVIE_RATINGS("ID" INTEGER not null primary key, "NAME" VARCHAR(50) not null, "RATING" INTEGER not null)

‎jpa/listeners-injection/src/main/resources/META-INF/drop.sql‎

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DROP TABLE MOVIE_LISTENER
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DROP TABLE MOVIE_RATINGS

‎jpa/listeners-injection/src/main/resources/META-INF/load.sql‎

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INSERT INTO MOVIE_LISTENER("ID", "NAME", "ACTORS") VALUES (1, 'The Matrix', 'Keanu Reeves, Laurence Fishburne, Carrie-Ann Moss')
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INSERT INTO MOVIE_LISTENER("ID", "NAME", "ACTORS") VALUES (2, 'The Lord of The Rings', 'Elijah Wood, Ian Mckellen, Viggo Mortensen')
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INSERT INTO MOVIE_LISTENER("ID", "NAME", "ACTORS") VALUES (3, 'Inception', 'Leonardo DiCaprio')
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INSERT INTO MOVIE_LISTENER("ID", "NAME", "ACTORS") VALUES (4, 'The Shining', 'Jack Nicholson, Shelley Duvall')
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INSERT INTO MOVIE_RATINGS("ID", "NAME", "RATING") VALUES (1, 'The Matrix', 60)
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INSERT INTO MOVIE_RATINGS("ID", "NAME", "RATING") VALUES (2, 'The Lord of The Rings', 70)
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INSERT INTO MOVIE_RATINGS("ID", "NAME", "RATING") VALUES (3, 'Inception', 80)
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INSERT INTO MOVIE_RATINGS("ID", "NAME", "RATING") VALUES (4, 'The Shining', 90)

‎jpa/listeners-injection/src/main/resources/META-INF/persistence.xml‎

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<?xml version="1.0" encoding="UTF-8"?>
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<persistence version="2.1"
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xmlns="http://xmlns.jcp.org/xml/ns/persistence"
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xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/persistence http://xmlns.jcp.org/xml/ns/persistence/persistence_2_1.xsd">
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<persistence-unit name="myPU" transaction-type="JTA">
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<properties>
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<property name="javax.persistence.schema-generation.database.action" value="drop-and-create"/>
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<property name="javax.persistence.schema-generation.create-source" value="script"/>
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<property name="javax.persistence.schema-generation.drop-source" value="script"/>
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<property name="javax.persistence.schema-generation.create-script-source" value="META-INF/create.sql"/>
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<property name="javax.persistence.schema-generation.drop-script-source" value="META-INF/drop.sql"/>
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<property name="javax.persistence.sql-load-script-source" value="META-INF/load.sql"/>
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</properties>
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</persistence-unit>
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</persistence>

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