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arjantijmsarjantijms
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Added sample for interceptor factor - prog. adding interceptor
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14 files changed

+173
-9
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14 files changed

+173
-9
lines changed

‎cdi/events-priority/pom.xml‎

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<?xml version="1.0" encoding="UTF-8"?>
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<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 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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<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"><modelVersion>4.0.0</modelVersion>
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<parent>
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<groupId>org.javaee8.cdi</groupId>
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<artifactId>cdi-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>events-priority</artifactId>
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<name>Java EE 8 Samples: CDI - Events Priority</name>
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</project>

‎cdi/interception-factory/pom.xml‎

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<?xml version="1.0" encoding="UTF-8"?>
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<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion>
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<parent>
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<groupId>org.javaee8.cdi</groupId>
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<artifactId>cdi-samples</artifactId>
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<version>1.0-SNAPSHOT</version>
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</parent>
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<artifactId>interception-factory</artifactId>
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<name>Java EE 8 Samples: CDI - Interception factory</name>
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</project>

‎cdi/interception-factory/src/main/java/org/javaee8/cdi/interception/factory/HelloAdder.java‎

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package org.javaee8.cdi.interception.factory;
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import static java.lang.annotation.ElementType.METHOD;
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import static java.lang.annotation.ElementType.TYPE;
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import static java.lang.annotation.RetentionPolicy.RUNTIME;
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import java.lang.annotation.Inherited;
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import java.lang.annotation.Retention;
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import java.lang.annotation.Target;
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import javax.enterprise.util.AnnotationLiteral;
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import javax.interceptor.InterceptorBinding;
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@Inherited
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@InterceptorBinding
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@Retention(RUNTIME)
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@Target({ METHOD, TYPE })
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public @interface HelloAdder {
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@SuppressWarnings("all")
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public static final class Literal extends AnnotationLiteral<HelloAdder> implements HelloAdder {
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public static final Literal INSTANCE = new Literal();
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private static final long serialVersionUID = 1L;
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}
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}

‎cdi/interception-factory/src/main/java/org/javaee8/cdi/interception/factory/HelloAdderInterceptor.java‎

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package org.javaee8.cdi.interception.factory;
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import javax.annotation.Priority;
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import javax.interceptor.AroundInvoke;
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import javax.interceptor.Interceptor;
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import javax.interceptor.InvocationContext;
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@HelloAdder
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@Interceptor
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@Priority(500)
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public class HelloAdderInterceptor {
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@AroundInvoke
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public Object modifyGreet(InvocationContext context) throws Exception {
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if (context.getMethod().getName().equals("setGreet")) {
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context.setParameters(new Object[] { "Hello " + context.getParameters()[0] });
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}
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return context.proceed();
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}
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}

‎cdi/interception-factory/src/main/java/org/javaee8/cdi/interception/factory/MyGreeting.java‎

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package org.javaee8.cdi.interception.factory;
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public interface MyGreeting {
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String getGreet();
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void setGreet(String greet);
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}

‎cdi/interception-factory/src/main/java/org/javaee8/cdi/interception/factory/MyGreetingImpl.java‎

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package org.javaee8.cdi.interception.factory;
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public class MyGreetingImpl implements MyGreeting {
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private String greet;
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public String getGreet() {
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return greet;
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}
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public void setGreet(String greet) {
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this.greet = greet;
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}
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}

‎cdi/interception-factory/src/main/java/org/javaee8/cdi/interception/factory/MyGreetingProducer.java‎

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package org.javaee8.cdi.interception.factory;
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import java.util.logging.Logger;
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import javax.annotation.Priority;
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import javax.enterprise.context.ApplicationScoped;
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import javax.enterprise.inject.Alternative;
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import javax.enterprise.inject.Produces;
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import javax.enterprise.inject.spi.InterceptionFactory;
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@Alternative
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@Priority(500)
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@ApplicationScoped
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public class MyGreetingProducer {
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private static final Logger logger = Logger.getLogger(MyGreetingProducer.class.getName());
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/**
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* This producer produces a MyGreeting alternative for MyGreetingImpl.
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* <p>
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* Note that the alternative is set by making the class, not the method, an
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* alternative.The alternative is activated via the <code>@Priority</code> annotation.
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*
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* @param interceptionFactory InterceptionFactory injected by CDI
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* @return MyGreeting instance, programmatically proxied
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*/
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@Produces
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public MyGreeting produce(InterceptionFactory<MyGreetingImpl> interceptionFactory) {
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logger.info("Producing a MyGreeting");
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// We're telling the InterceptionFactory here to dynamically add the @HelloAdder
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// annotation.
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interceptionFactory.configure().add(HelloAdder.Literal.INSTANCE);
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// This will create a proxy as configured above around the bare
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// instance of MyGreetingImpl that we provide.
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return interceptionFactory.createInterceptedInstance(new MyGreetingImpl());
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}
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}

‎cdi/interception-factory/src/test/java/org/javaee8/cdi/interception/factory/InterceptorFactoryTest.java‎

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package org.javaee8.cdi.interception.factory;
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import static org.jboss.shrinkwrap.api.ShrinkWrap.create;
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import static org.junit.Assert.assertEquals;
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import javax.inject.Inject;
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import org.jboss.arquillian.container.test.api.Deployment;
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import org.jboss.arquillian.junit.Arquillian;
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import org.jboss.shrinkwrap.api.Archive;
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import org.jboss.shrinkwrap.api.spec.JavaArchive;
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import org.junit.Test;
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import org.junit.runner.RunWith;
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@RunWith(Arquillian.class)
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public class InterceptorFactoryTest {
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@Deployment
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public static Archive<?> deploy() {
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return create(JavaArchive.class)
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.addClasses(
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MyGreeting.class, MyGreetingImpl.class, MyGreetingProducer.class,
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HelloAdder.class, HelloAdderInterceptor.class)
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.addAsManifestResource("beans.xml");
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}
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@Inject
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private MyGreeting myGreeting;
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@Test
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public void test() {
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myGreeting.setGreet("Reza");
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assertEquals("Hello Reza", myGreeting.getGreet());
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}
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}

‎cdi/interception-factory/src/test/resources/beans.xml‎

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<?xml version="1.0" encoding="UTF-8"?>
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<beans xmlns="http://xmlns.jcp.org/xml/ns/javaee"
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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/javaee http://xmlns.jcp.org/xml/ns/javaee/beans_2_0.xsd"
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bean-discovery-mode="all">
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</beans>

‎cdi/pom.xml‎

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<groupId>org.javaee8.cdi</groupId>
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<artifactId>cdi-samples</artifactId>
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<packaging>pom</packaging>
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<name>Java EE 8 CDI Samples</name>
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<name>Java EE 8 Samples: CDI</name>
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<modules>
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<module>interception-factory</module>
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<module>events-priority</module>
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</modules>
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