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esercizio e test usando jms e mdb

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This commit is contained in:
Giovanni Di Grezia
2015-05-31 21:15:23 +02:00
parent b4e795d64a
commit 620edb5049
15 changed files with 517 additions and 3 deletions
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4
exercise1/InitializeDB.java
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@@ -9,8 +9,8 @@ import javax.inject.Inject;
* Created by Giovanni on 24/05/2015. * Created by Giovanni on 24/05/2015.
*/ */
@Singleton //@Singleton enable
@Startup //@Startup enable
public class InitializeDB { public class InitializeDB {
private Student s1,s2; private Student s1,s2;

2
exercise1_client/client.java
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@@ -40,4 +40,4 @@ public class client {
} }
} }

71
exercise2/Book.java Normal file
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@@ -0,0 +1,71 @@
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;
}
}

26
exercise2/BookMessage.java Normal file
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@@ -0,0 +1,26 @@
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;
}
}

49
exercise2/EJBBook.java Normal file
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@@ -0,0 +1,49 @@
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();
}
}

43
exercise2/InitializeDB.java Normal file
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@@ -0,0 +1,43 @@
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);
}
}

40
exercise2/MDBBook.java Normal file
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@@ -0,0 +1,40 @@
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();
}
}
}

18
exercise2/RemoteInterface.java Normal file
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@@ -0,0 +1,18 @@
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() ;
}

44
exercise2_client/ClientPrintAll.java Normal file
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@@ -0,0 +1,44 @@
package exercise2_client;
import exercise2.Book;
import exercise2.RemoteInterface;
import javax.naming.Context;
import javax.naming.InitialContext;
import javax.naming.NamingException;
import java.util.Iterator;
import java.util.List;
public class ClientPrintAll {
public static void main (String[] args) {
Context ctx = null;
try {
ctx =new InitialContext();
} catch (NamingException e) {
e.printStackTrace();
}
RemoteInterface r = null;
try {
r =(RemoteInterface) ctx.lookup("java:global/web/EJBBook!exercise2.RemoteInterface");
List<Book> l = r.findall();
Iterator<Book> it = l.iterator();
while (it.hasNext()){
Book b = it.next();
System.out.print(b.getIsbn() + " " + b.getTitle() + " " + b.getAuthor() + " " +b.getPrice() + " ");
}
} catch (NamingException e) {
e.printStackTrace();
}
}
}

37
exercise2_client/ClientUpdatePrice.java Normal file
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@@ -0,0 +1,37 @@
package exercise2_client;
import exercise2.BookMessage;
import javax.jms.ConnectionFactory;
import javax.jms.Destination;
import javax.jms.JMSContext;
import javax.naming.Context;
import javax.naming.InitialContext;
import javax.naming.NamingException;
/**
* Created by Giovanni on 31/05/2015.
*/
public class ClientUpdatePrice {
public static void main(String[] args) throws NamingException {
BookMessage m = new BookMessage("0001",Float.valueOf(10000));
Context jndiContext = new InitialContext();
ConnectionFactory connectionFactory = (ConnectionFactory) jndiContext.lookup("jms/javaee7/ConnectionFactory");
Destination topic = (Destination) jndiContext.lookup("jms/javaee7/Topic");
try (JMSContext jmsContext = connectionFactory.createContext()) {
jmsContext.createProducer().send(topic, m);
}
}
}

51
servlet/Servletexercise2.java Normal file
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@@ -0,0 +1,51 @@
package servlet;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.io.PrintWriter;
/**
* Created by Giovanni on 25/04/2015.
*/
@WebServlet(name = "Servletexercise2")
public class Servletexercise2 extends HttpServlet {
protected void processRequest(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
response.setContentType("text/html;charset=UTF-8");
try (PrintWriter out = response.getWriter()) {
/* TODO output your page here. */
out.println("<!DOCTYPE html>");
out.println("<html>");
out.println("<head>");
out.println("<title>Servlet xg</title>");
out.println("</head>");
out.println("<body>");
out.println("<h1>Servlet xg at " + request.getContextPath() + "</h1>");
out.println("</body>");
out.println("</html>");
}
}
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
processRequest(request, response);
}
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
processRequest(request, response);
}
}

58
servlet/Servlettest4.java Normal file
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@@ -0,0 +1,58 @@
package servlet;
import test3_persistence.store_class;
import test3_persistence.test_class;
import javax.ejb.EJB;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
/**
* Created by Giovanni on 25/04/2015.
*/
@WebServlet(name = "Servlettest4")
public class Servlettest4 extends HttpServlet {
protected void processRequest(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
response.setContentType("text/html;charset=UTF-8");
try (PrintWriter out = response.getWriter()) {
/* TODO output your page here. */
out.println("<!DOCTYPE html>");
out.println("<html>");
out.println("<head>");
out.println("<title>Servlet xg</title>");
out.println("</head>");
out.println("<body>");
out.println("<h1>Servlet xg at " + request.getContextPath() + "</h1>");
out.println("</body>");
out.println("</html>");
}
}
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
processRequest(request, response);
}
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
processRequest(request, response);
}
}

12
test4_jms/GeneralMessage.java Normal file
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@@ -0,0 +1,12 @@
package test4_jms;
import java.io.Serializable;
/**
* Created by Giovanni on 31/05/2015.
*/
public class GeneralMessage implements Serializable {
public String s;
}

30
test4_jms/MDB.java Normal file
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@@ -0,0 +1,30 @@
package test4_jms;
import javax.ejb.ActivationConfigProperty;
import javax.ejb.MessageDriven;
import javax.inject.Inject;
import javax.jms.JMSException;
import javax.jms.Message;
import javax.jms.MessageListener;
import java.util.logging.Logger;
/**
* Created by Giovanni on 31/05/2015.
*/
@MessageDriven(mappedName = "jms/javaee7/Topic", activationConfig = {
@ActivationConfigProperty(propertyName = "messageSelector", propertyValue = "author = 0")
})
public class MDB implements MessageListener {
@Inject
Logger l;
public void onMessage(Message message) {
try {
GeneralMessage m = message.getBody(GeneralMessage.class);
l.info("Messaggio: " + m.s);
} catch (JMSException e) {
e.printStackTrace();
}
}
}

35
test4_jms_client/client.java Normal file
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@@ -0,0 +1,35 @@
package test4_jms_client;
import test4_jms.GeneralMessage;
import javax.jms.ConnectionFactory;
import javax.jms.Destination;
import javax.jms.JMSContext;
import javax.naming.Context;
import javax.naming.InitialContext;
import javax.naming.NamingException;
/**
* Created by Giovanni on 31/05/2015.
*/
public class client {
public static void main(String[] args) throws NamingException {
GeneralMessage gm = new GeneralMessage();
gm.s = "messaggio del caiser 2";
Context jndiContext = new InitialContext();
ConnectionFactory connectionFactory = (ConnectionFactory) jndiContext.lookup("jms/javaee7/ConnectionFactory");
Destination topic = (Destination) jndiContext.lookup("jms/javaee7/Topic");
try (JMSContext jmsContext = connectionFactory.createContext()) {
jmsContext.createProducer().setProperty("author", 0).send(topic,gm);
}
}
}