esercizio e test usando jms e mdb

exercise2/Book.java

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+package exercise2;
+
+import javax.persistence.*;
+import javax.validation.constraints.DecimalMin;
+import javax.validation.constraints.NotNull;
+import java.io.Serializable;
+
+/**
+ * Created by Giovanni on 31/05/2015.
+ */
+
+@Entity
+@NamedQueries({
+        @NamedQuery(name = "findbyisbn", query = "SELECT b FROM Book b WHERE b.isbn =?1"),
+        @NamedQuery(name = "findall", query = "SELECT b FROM Book b")
+})
+public class Book implements Serializable{
+
+    @GeneratedValue @Id
+    private Long id ;
+    @NotNull
+    private String title;
+    @NotNull
+    private String author;
+    @NotNull
+    private Float price;
+    @NotNull
+    private String isbn;
+
+
+    public Book(){}
+
+    public Book(@NotNull String in_isbn,@NotNull String in_title,@NotNull String in_author, @NotNull @DecimalMin("0.0") Float in_price){
+        title = in_title;
+        author = in_author;
+        price = in_price;
+        isbn = in_isbn;
+    }
+
+    public @NotNull String getIsbn() {
+        return isbn;
+    }
+
+    public void setIsbn(@NotNull String isbn) {
+        this.isbn = isbn;
+    }
+
+    public @NotNull String getTitle() {
+        return title;
+    }
+
+    public void setTitle(@NotNull String title) {
+        this.title = title;
+    }
+
+    public @NotNull String getAuthor() {
+        return author;
+    }
+
+    public void setAuthor( @NotNull String author) {
+        this.author = author;
+    }
+
+    public @NotNull @DecimalMin("0.0") Float getPrice() {
+        return price;
+    }
+
+    public void setPrice(@NotNull @DecimalMin("0.0") Float price) {
+        this.price = price;
+    }
+}

exercise2/BookMessage.java

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+package exercise2;
+
+import java.io.Serializable;
+
+/**
+ * Created by Giovanni on 31/05/2015.
+ */
+public class BookMessage implements Serializable{
+
+    public BookMessage (String in_isbn, Float in_price){
+        isbn = in_isbn;
+        price = in_price;
+    }
+
+
+    private String isbn;
+    private Float price;
+
+    public String getIsbn() {
+        return isbn;
+    }
+
+    public Float getPrice() {
+        return price;
+    }
+}

exercise2/EJBBook.java

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+package exercise2;
+
+
+
+import javax.ejb.LocalBean;
+import javax.ejb.Stateless;
+import javax.persistence.EntityManager;
+import javax.persistence.PersistenceContext;
+import javax.persistence.Query;
+import javax.validation.constraints.NotNull;
+import java.util.List;
+
+/**
+ * Created by Giovanni on 24/05/2015.
+ */
+@Stateless
+@LocalBean
+public class EJBBook implements RemoteInterface {
+
+    @PersistenceContext(unitName = "exercise2")
+    EntityManager em ;
+
+
+    public void create_book (@NotNull Book s) {
+        em.persist(s);
+    }
+    public void update_book (@NotNull Book s) {
+        em.merge(s);
+        em.persist(s);
+    }
+    public void delete_book (@NotNull Book s) {
+        em.merge(s);
+        em.remove(s);
+    }
+
+    public @NotNull List<Book> findbyisbn (@NotNull String in_isbn) {
+        Query Q = em.createNamedQuery("findbyisbn");
+        Q.setParameter(1, in_isbn);
+        return (List<Book>)Q.getResultList();
+    }
+
+
+    public  List<Book> findall () {
+        Query Q = em.createNamedQuery("findall");
+        return (List<Book>)Q.getResultList();
+    }
+
+
+}

exercise2/InitializeDB.java

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+package exercise2;
+
+
+
+import javax.annotation.PostConstruct;
+import javax.annotation.PreDestroy;
+import javax.ejb.Singleton;
+import javax.ejb.Startup;
+import javax.inject.Inject;
+
+/**
+ * Created by Giovanni on 24/05/2015.
+ */
+
+@Singleton
+@Startup
+public class InitializeDB {
+
+    private Book b1,b2;
+
+    @Inject
+    private EJBBook e;
+
+    @PostConstruct
+    void pupulate (){
+            b1 = new Book("0001","Titolo1","Author1",10f);
+            b2 = new Book("0010","Titolo2","Author2",30f);
+            e.create_book(b1);
+            e.create_book(b2);
+    }
+
+    @PreDestroy
+    void delete () {
+        e.delete_book(b1);
+        e.delete_book(b2);
+    }
+
+
+
+
+
+
+}

exercise2/MDBBook.java

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+package exercise2;
+
+import javax.ejb.MessageDriven;
+import javax.inject.Inject;
+import javax.jms.JMSException;
+import javax.jms.Message;
+import javax.jms.MessageListener;
+import java.util.Iterator;
+import java.util.List;
+import java.util.logging.Logger;
+
+/**
+ * Created by Giovanni on 31/05/2015.
+ */
+@MessageDriven(mappedName = "jms/javaee7/Topic")
+public class MDBBook implements MessageListener {
+
+    @Inject
+    Logger l;
+
+    @Inject
+    EJBBook e;
+
+    public void onMessage(Message message) {
+        try {
+            BookMessage m = message.getBody(BookMessage.class);
+            l.info("Messaggio: " + m.getIsbn() + " " + m.getPrice());
+
+            List<Book> lb = e.findbyisbn(m.getIsbn());
+            Iterator<Book>ib = lb.iterator();
+            if (ib.hasNext()){
+                Book b = ib.next();
+                b.setPrice(m.getPrice());
+                e.update_book(b);
+            }
+        } catch (JMSException e) {
+            e.printStackTrace();
+        }
+    }
+}

exercise2/RemoteInterface.java

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+package exercise2;
+
+import exercise1.Student;
+
+import javax.ejb.Remote;
+import javax.validation.constraints.NotNull;
+import java.util.List;
+
+/**
+ * Created by Giovanni on 24/05/2015.
+ */
+@Remote
+public interface RemoteInterface {
+
+    @NotNull List<Book> findbyisbn(@NotNull String in_isbn);
+     List<Book> findall() ;
+
+}