Aggiunto l'esempio del capitolo sul CDI

cdidemo/src/main/java/it/plague/jeedemo/CdiMain.java

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+package it.plague.jeedemo;
+
+import it.plague.jeedemo.beans.Book;
+import it.plague.jeedemo.services.BookService;
+import org.jboss.weld.environment.se.Weld;
+import org.jboss.weld.environment.se.WeldContainer;
+
+public class CdiMain {
+
+  public static void main(String[] args) {
+    Weld weld = new Weld();
+    WeldContainer container = weld.initialize();
+    BookService bookService = container.instance().select(BookService.class).get();
+    Book book = bookService.createBook("H2G2", 12.5f, "Geeky scifi Book");
+    System.out.println(book);
+    weld.shutdown();
+  }
+}

cdidemo/src/main/java/it/plague/jeedemo/annotations/EightDigits.java

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+package it.plague.jeedemo.annotations;
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+import javax.inject.Qualifier;
+
+@Qualifier
+@Retention(RetentionPolicy.RUNTIME)
+@Target({ElementType.FIELD, ElementType.TYPE, ElementType.METHOD})
+public @interface EightDigits {
+
+}

cdidemo/src/main/java/it/plague/jeedemo/annotations/Loggable.java

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+package it.plague.jeedemo.annotations;
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+import javax.interceptor.InterceptorBinding;
+
+@InterceptorBinding
+@Target({ElementType.METHOD, ElementType.TYPE})
+@Retention(RetentionPolicy.RUNTIME)
+public @interface Loggable {
+
+}

cdidemo/src/main/java/it/plague/jeedemo/annotations/ThirteenDigits.java

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+package it.plague.jeedemo.annotations;
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+import javax.inject.Qualifier;
+
+@Qualifier
+@Retention(RetentionPolicy.RUNTIME)
+@Target({ElementType.FIELD, ElementType.TYPE, ElementType.METHOD})
+public @interface ThirteenDigits {
+
+}

cdidemo/src/main/java/it/plague/jeedemo/beans/Book.java

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+package it.plague.jeedemo.beans;
+
+public class Book {
+
+  private String title;
+  private Float price;
+  private String description;
+  private String number;
+
+  public Book(String title, Float price, String description) {
+    this.title = title;
+    this.price = price;
+    this.description = description;
+  }
+
+  public String getTitle() {
+    return title;
+  }
+
+  public void setTitle(String title) {
+    this.title = title;
+  }
+
+  public Float getPrice() {
+    return price;
+  }
+
+  public void setPrice(Float price) {
+    this.price = price;
+  }
+
+  public String getDescription() {
+    return description;
+  }
+
+  public void setDescription(String description) {
+    this.description = description;
+  }
+
+  public String getNumber() {
+    return number;
+  }
+
+  public void setNumber(String number) {
+    this.number = number;
+  }
+
+  @Override
+  public String toString() {
+    return "Book{" +
+        "title='" + title + '\'' +
+        ", price=" + price +
+        ", description='" + description + '\'' +
+        ", number='" + number + '\'' +
+        '}';
+  }
+
+}

cdidemo/src/main/java/it/plague/jeedemo/beans/IsbnGenerator.java

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+package it.plague.jeedemo.beans;
+
+import it.plague.jeedemo.annotations.Loggable;
+import it.plague.jeedemo.annotations.ThirteenDigits;
+import java.util.Random;
+import java.util.logging.Logger;
+import javax.inject.Inject;
+
+@ThirteenDigits
+public class IsbnGenerator implements NumberGenerator {
+
+  @Inject
+  private Logger logger;
+
+  @Override
+  @Loggable
+  public String generateNumber() {
+    String isbn = " 13-84356- " + Math.abs(new Random().nextInt());
+    logger.info("Generated ISBN: " + isbn);
+    return isbn;
+  }
+}

cdidemo/src/main/java/it/plague/jeedemo/beans/IssnGenerator.java

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+package it.plague.jeedemo.beans;
+
+import it.plague.jeedemo.annotations.EightDigits;
+import it.plague.jeedemo.annotations.Loggable;
+import java.util.Random;
+import java.util.logging.Logger;
+import javax.inject.Inject;
+
+@EightDigits
+public class IssnGenerator implements NumberGenerator {
+
+  @Inject
+  private Logger logger;
+
+  @Override
+  @Loggable
+  public String generateNumber() {
+    String issn = " 8- " + Math.abs(new Random().nextInt());
+    logger.info("Generated ISSN: " + issn);
+    return issn;
+  }
+}

cdidemo/src/main/java/it/plague/jeedemo/beans/NumberGenerator.java

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+package it.plague.jeedemo.beans;
+
+public interface NumberGenerator {
+
+  String generateNumber();
+}

cdidemo/src/main/java/it/plague/jeedemo/interceptors/LoggingInterceptor.java

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+package it.plague.jeedemo.interceptors;
+
+import it.plague.jeedemo.annotations.Loggable;
+import java.util.logging.Logger;
+import javax.inject.Inject;
+import javax.interceptor.AroundInvoke;
+import javax.interceptor.Interceptor;
+import javax.interceptor.InvocationContext;
+
+@Interceptor
+@Loggable
+public class LoggingInterceptor {
+
+  @Inject
+  private Logger logger;
+
+  @AroundInvoke
+  public Object logMethod(InvocationContext ic) throws Exception {
+    logger.entering(ic.getTarget().getClass().getName(), ic.getMethod().getName());
+    try {
+      return ic.proceed();
+    } finally {
+      logger.exiting(ic.getTarget().getClass().getName(), ic.getMethod().getName());
+    }
+  }
+}

cdidemo/src/main/java/it/plague/jeedemo/producers/LoggerProducer.java

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+package it.plague.jeedemo.producers;
+
+import java.util.logging.Logger;
+import javax.enterprise.inject.Produces;
+import javax.enterprise.inject.spi.InjectionPoint;
+
+public class LoggerProducer {
+
+  @Produces
+  public Logger produceLogger(InjectionPoint injectionPoint) {
+    return Logger.getLogger(injectionPoint.getMember().getDeclaringClass().getName());
+  }
+}

cdidemo/src/main/java/it/plague/jeedemo/services/BookService.java

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+package it.plague.jeedemo.services;
+
+import it.plague.jeedemo.annotations.Loggable;
+import it.plague.jeedemo.annotations.ThirteenDigits;
+import it.plague.jeedemo.beans.Book;
+import it.plague.jeedemo.beans.NumberGenerator;
+import javax.inject.Inject;
+
+@Loggable
+public class BookService {
+
+  @Inject
+  @ThirteenDigits
+  private NumberGenerator numberGenerator;
+
+  public Book createBook(String title, Float price, String description) {
+    Book book = new Book(title, price, description);
+    book.setNumber(numberGenerator.generateNumber());
+    return book;
+  }
+}

cdidemo/src/main/resources/META-INF/beans.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<beans xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/
+XMLSchema-instance" xsi:schemeLocation="http://java.sun.com/xml/ns/javaee http://
+java.sun.com/xml/ns/javaee/beans_1_0.xsd" version="1.1" bean-discovery-mode="all">
+  <!-- This is empty on purpose. -->
+</beans>

cdidemo/src/test/java/it/plague/jeedemo/BookServiceIT.java

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+package it.plague.jeedemo;
+
+import static org.junit.Assert.assertTrue;
+
+import it.plague.jeedemo.beans.Book;
+import it.plague.jeedemo.services.BookService;
+import org.jboss.weld.environment.se.Weld;
+import org.jboss.weld.environment.se.WeldContainer;
+import org.junit.Test;
+
+public class BookServiceIT {
+
+  @Test
+  public void shouldCheckNumberIsMOCK() {
+    Weld weld = new Weld();
+    WeldContainer container = weld.initialize();
+    BookService bookService = container.instance().select(BookService.class).get();
+    Book book = bookService.createBook("H2G2", 12.5f, "Geeky scifi Book");
+    assertTrue(book.getNumber().startsWith("MOCK"));
+    weld.shutdown();
+  }
+}

cdidemo/src/test/java/it/plague/jeedemo/MockGenerator.java

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+package it.plague.jeedemo;
+
+import it.plague.jeedemo.annotations.Loggable;
+import it.plague.jeedemo.annotations.ThirteenDigits;
+import it.plague.jeedemo.beans.NumberGenerator;
+import java.util.Random;
+import java.util.logging.Logger;
+import javax.enterprise.inject.Alternative;
+import javax.inject.Inject;
+
+@Alternative
+@ThirteenDigits
+public class MockGenerator implements NumberGenerator {
+
+  @Inject
+  private Logger logger;
+
+  @Override
+  @Loggable
+  public String generateNumber() {
+    String mock = "MOCK- " + Math.abs(new Random().nextInt());
+    logger.info("Generated Mock: " + mock);
+    return mock;
+  }
+}

cdidemo/src/test/resources/META-INF/beans.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<beans xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/
+XMLSchema-instance" xsi:schemeLocation="http://java.sun.com/xml/ns/javaee http://
+java.sun.com/xml/ns/javaee/beans_1_0.xsd" version="1.1" bean-discovery-mode="all">
+  <alternatives>
+    <class>it.plague.jeedemo.MockGenerator</class>
+  </alternatives>
+  <interceptors>
+    <class>it.plague.jeedemo.interceptors.LoggingInterceptor</class>
+  </interceptors>
+</beans>