Google Git
Sign in
apache / tomee-site-pub / 0feacca09670d5540d916c30efd0675699b63da4 / . / tomee-8.0 / es / examples / injection-of-ejbs.html
blob: f757ddbef0797757556aa25ba8c3f643714b45f4 [file] [log] [blame]
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Apache TomEE</title>
<meta name="description"
content="Apache TomEE is a lightweight, yet powerful, JavaEE Application server with feature rich tooling." />
<meta name="keywords" content="tomee,asf,apache,javaee,jee,shade,embedded,test,junit,applicationcomposer,maven,arquillian" />
<meta name="author" content="Luka Cvetinovic for Codrops" />
<link rel="icon" href="../../../favicon.ico">
<link rel="icon" type="image/png" href="../../../favicon.png">
<meta name="msapplication-TileColor" content="#80287a">
<meta name="theme-color" content="#80287a">
<link rel="stylesheet" type="text/css" href="../../../css/normalize.css">
<link rel="stylesheet" type="text/css" href="../../../css/bootstrap.css">
<link rel="stylesheet" type="text/css" href="../../../css/owl.css">
<link rel="stylesheet" type="text/css" href="../../../css/animate.css">
<link rel="stylesheet" type="text/css" href="../../../fonts/font-awesome-4.1.0/css/font-awesome.min.css">
<link rel="stylesheet" type="text/css" href="../../../fonts/eleganticons/et-icons.css">
<link rel="stylesheet" type="text/css" href="../../../css/jqtree.css">
<link rel="stylesheet" type="text/css" href="../../../css/idea.css">
<link rel="stylesheet" type="text/css" href="../../../css/cardio.css">
<script type="text/javascript">
var _gaq = _gaq || [];
_gaq.push(['_setAccount', 'UA-2717626-1']);
_gaq.push(['_setDomainName', 'apache.org']);
_gaq.push(['_trackPageview']);
(function() {
var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true;
ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js';
var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s);
})();
</script>
</head>
<body>
<div class="preloader">
<img src="../../../img/loader.gif" alt="Preloader image">
</div>
<nav class="navbar">
<div class="container">
<div class="row"> <div class="col-md-12">
<!-- Brand and toggle get grouped for better mobile display -->
<div class="navbar-header">
<button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#bs-example-navbar-collapse-1">
<span class="sr-only">Toggle navigation</span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
</button>
<a class="navbar-brand" href="/">
<span>
<img src="../../../img/logo-active.png">
</span>
Apache TomEE
</a>
</div>
<!-- Collect the nav links, forms, and other content for toggling -->
<div class="collapse navbar-collapse" id="bs-example-navbar-collapse-1">
<ul class="nav navbar-nav navbar-right main-nav">
<li><a href="../../../docs.html">Documentation</a></li>
<li><a href="../../../community/index.html">Community</a></li>
<li><a href="../../../security/security.html">Security</a></li>
<li><a href="../../../download-ng.html">Downloads</a></li>
</ul>
</div>
<!-- /.navbar-collapse -->
</div></div>
</div>
<!-- /.container-fluid -->
</nav>
<div id="main-block" class="container main-block">
<div class="row title">
<div class="col-md-12">
<div class='page-header'>
<h1>Inyección de Ejbs</h1>
</div>
</div>
</div>
<div class="row">
<div class="col-md-12">
<div id="preamble">
<div class="sectionbody">
<div class="paragraph">
<p>Este ejemplo muestra cómo usar la anotación <code>@EJB</code> en una clase de bean para
referenciar otros beans.</p>
</div>
<div class="paragraph">
<p>Esta funcionalidad a menudo se denomina inyección de dependencia (consulte
<a href="http://www.martinfowler.com/articles/injection.html" class="bare">http://www.martinfowler.com/articles/injection.html</a>), y ha sido
introducido en Java EE 5.</p>
</div>
<div class="paragraph">
<p>En este ejemplo particular, crearemos dos beans de sesión sin estado (stateless)</p>
</div>
<div class="ulist">
<ul>
<li>
<p>un bean de sesión de DataStore</p>
</li>
<li>
<p>un bean de sesión DataReader</p>
</li>
</ul>
</div>
<div class="paragraph">
<p>El bean DataReader usa el bean DataStore para recuperar información,
dentro del bean DataReader se obtiene una referencia
al bean DataStore usando la anotación <code>@EJB</code>, evitando así el uso
de la API JNDI.</p>
</div>
</div>
</div>
<div class="sect1">
<h2 id="_datareader">DataReader</h2>
<div class="sectionbody">
<div class="listingblock">
<div class="content">
<pre class="highlight"><code class="language-java" data-lang="java">package org.superbiz.injection;
import javax.ejb.EJB;
import javax.ejb.Stateless;
/**
* Este es un bean pojo sesión sin estado estilo EJB 3.1
* Cada implementación de bean de sesión sin estado debe estar anotada
* usando la anotación @Stateless
* Este EJB tiene 2 interfaces de negocio: DataReaderRemote, una interfaz remota
* negocio y DataReaderLocal, una interfaz de nogocio local
* &lt;p /&gt;
* Las variables de instancia 'dataStoreRemote' están anotadas con la anotación @EJB:
* esto significa que el servidor de aplicaciones, en tiempo de ejecución, inyectará en esta instancia variable una referencia al EJB DataStoreRemote
* &lt;p /&gt;
* Las variables de instancia 'dataStoreLocal' están anotadas con la anotación @EJB:
* esto significa que el servidor de aplicaciones, en tiempo de ejecución inyectará en esta instancia
* variable una referencia a EJB DataStoreLocal
*/
@Stateless
public class DataReader {
@EJB
private DataStoreRemote dataStoreRemote;
@EJB
private DataStoreLocal dataStoreLocal;
@EJB
private DataStore dataStore;
public String readDataFromLocalStore() {
return "LOCAL:" + dataStoreLocal.getData();
}
public String readDataFromLocalBeanStore() {
return "LOCALBEAN:" + dataStore.getData();
}
public String readDataFromRemoteStore() {
return "REMOTE:" + dataStoreRemote.getData();
}
}</code></pre>
</div>
</div>
</div>
</div>
<div class="sect1">
<h2 id="_datastore">DataStore</h2>
<div class="sectionbody">
<div class="listingblock">
<div class="content">
<pre class="highlight"><code class="language-java" data-lang="java">package org.superbiz.injection;
import javax.ejb.LocalBean;
import javax.ejb.Stateless;
/**
* Este es un bean pojo de sesión sin estado estilo EJB 3
* Cada implementación de bean de sesión sin estado debe estar anotada
* usando la anotación @Stateless
* Este EJB tiene 2 interfaces de negocio: DataStoreRemote, una interfaz de negocio remota
* y DataStoreLocal, una interfaz de negocio local
*/
@Stateless
@LocalBean
public class DataStore implements DataStoreLocal, DataStoreRemote {
public String getData() {
return "42";
}
}</code></pre>
</div>
</div>
</div>
</div>
<div class="sect1">
<h2 id="_datastorelocal">DataStoreLocal</h2>
<div class="sectionbody">
<div class="listingblock">
<div class="content">
<pre class="highlight"><code class="language-java" data-lang="java">package org.superbiz.injection;
import javax.ejb.Local;
/**
* Esta es una interfaz de negociolocal EJB 3
* Una interfaz de negocio local se puede anotar con la anotación @Local,
* @Local es una anotación opcional. Una interfaz de negocio que
* no esta anotado con @Local o @Remote se supone se asume como Local
*/
@Local
public interface DataStoreLocal {
public String getData();
}</code></pre>
</div>
</div>
</div>
</div>
<div class="sect1">
<h2 id="_datastoreremote">DataStoreRemote</h2>
<div class="sectionbody">
<div class="listingblock">
<div class="content">
<pre class="highlight"><code class="language-java" data-lang="java">package org.superbiz.injection;
import javax.ejb.Remote;
/**
* Esta es una interfaz de negocio remota EJB 3
* Se debe anotar una interfaz de negocio remota con la anotación @Remote
*/
@Remote
public interface DataStoreRemote {
public String getData();
}</code></pre>
</div>
</div>
</div>
</div>
<div class="sect1">
<h2 id="_ejbdependencytest">EjbDependencyTest</h2>
<div class="sectionbody">
<div class="listingblock">
<div class="content">
<pre class="highlight"><code class="language-java" data-lang="java">package org.superbiz.injection;
import junit.framework.TestCase;
import javax.ejb.embeddable.EJBContainer;
import javax.naming.Context;
/**
* Un caso de prueba para DataReaderImpl ejb, probando tanto la interfaz remota
* como la local
*/
public class EjbDependencyTest extends TestCase {
public void test() throws Exception {
final Context context = EJBContainer.createEJBContainer().getContext();
DataReader dataReader = (DataReader) context.lookup("java:global/injection-of-ejbs/DataReader");
assertNotNull(dataReader);
assertEquals("LOCAL:42", dataReader.readDataFromLocalStore());
assertEquals("REMOTE:42", dataReader.readDataFromRemoteStore());
assertEquals("LOCALBEAN:42", dataReader.readDataFromLocalBeanStore());
}
}</code></pre>
</div>
</div>
</div>
</div>
<div class="sect1">
<h2 id="_ejecución">Ejecución</h2>
<div class="sectionbody">
<div class="listingblock">
<div class="content">
<pre class="highlight"><code class="language-console" data-lang="console">-------------------------------------------------------
T E S T S
-------------------------------------------------------
Running org.superbiz.injection.EjbDependencyTest
Apache OpenEJB 4.0.0-beta-1 build: 20111002-04:06
http://tomee.apache.org/
INFO - openejb.home = /Users/dblevins/examples/injection-of-ejbs
INFO - openejb.base = /Users/dblevins/examples/injection-of-ejbs
INFO - Using 'javax.ejb.embeddable.EJBContainer=true'
INFO - Configuring Service(id=Default Security Service, type=SecurityService, provider-id=Default Security Service)
INFO - Configuring Service(id=Default Transaction Manager, type=TransactionManager, provider-id=Default Transaction Manager)
INFO - Found EjbModule in classpath: /Users/dblevins/examples/injection-of-ejbs/target/classes
INFO - Beginning load: /Users/dblevins/examples/injection-of-ejbs/target/classes
INFO - Configuring enterprise application: /Users/dblevins/examples/injection-of-ejbs
INFO - Configuring Service(id=Default Stateless Container, type=Container, provider-id=Default Stateless Container)
INFO - Auto-creating a container for bean DataReader: Container(type=STATELESS, id=Default Stateless Container)
INFO - Configuring Service(id=Default Managed Container, type=Container, provider-id=Default Managed Container)
INFO - Auto-creating a container for bean org.superbiz.injection.EjbDependencyTest: Container(type=MANAGED, id=Default Managed Container)
INFO - Enterprise application "/Users/dblevins/examples/injection-of-ejbs" loaded.
INFO - Assembling app: /Users/dblevins/examples/injection-of-ejbs
INFO - Jndi(name="java:global/injection-of-ejbs/DataReader!org.superbiz.injection.DataReader")
INFO - Jndi(name="java:global/injection-of-ejbs/DataReader")
INFO - Jndi(name="java:global/injection-of-ejbs/DataStore!org.superbiz.injection.DataStore")
INFO - Jndi(name="java:global/injection-of-ejbs/DataStore!org.superbiz.injection.DataStoreLocal")
INFO - Jndi(name="java:global/injection-of-ejbs/DataStore!org.superbiz.injection.DataStoreRemote")
INFO - Jndi(name="java:global/injection-of-ejbs/DataStore")
INFO - Jndi(name="java:global/EjbModule355598874/org.superbiz.injection.EjbDependencyTest!org.superbiz.injection.EjbDependencyTest")
INFO - Jndi(name="java:global/EjbModule355598874/org.superbiz.injection.EjbDependencyTest")
INFO - Created Ejb(deployment-id=DataReader, ejb-name=DataReader, container=Default Stateless Container)
INFO - Created Ejb(deployment-id=DataStore, ejb-name=DataStore, container=Default Stateless Container)
INFO - Created Ejb(deployment-id=org.superbiz.injection.EjbDependencyTest, ejb-name=org.superbiz.injection.EjbDependencyTest, container=Default Managed Container)
INFO - Started Ejb(deployment-id=DataReader, ejb-name=DataReader, container=Default Stateless Container)
INFO - Started Ejb(deployment-id=DataStore, ejb-name=DataStore, container=Default Stateless Container)
INFO - Started Ejb(deployment-id=org.superbiz.injection.EjbDependencyTest, ejb-name=org.superbiz.injection.EjbDependencyTest, container=Default Managed Container)
INFO - Deployed Application(path=/Users/dblevins/examples/injection-of-ejbs)
Tests run: 1, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 1.225 sec
Results :
Tests run: 1, Failures: 0, Errors: 0, Skipped: 0</code></pre>
</div>
</div>
</div>
</div>
<div class="sect1">
<h2 id="_apis_used">APIs Used</h2>
<div class="sectionbody">
<div class="ulist">
<ul>
<li>
<p><a href="../../../jakartaee-8.0/javadoc/javax/ejb/EJB.html">javax.ejb.EJB</a></p>
</li>
<li>
<p><a href="../../../jakartaee-8.0/javadoc/javax/ejb/Local.html">javax.ejb.Local</a></p>
</li>
<li>
<p><a href="../../../jakartaee-8.0/javadoc/javax/ejb/LocalBean.html">javax.ejb.LocalBean</a></p>
</li>
<li>
<p><a href="../../../jakartaee-8.0/javadoc/javax/ejb/Remote.html">javax.ejb.Remote</a></p>
</li>
<li>
<p><a href="../../../jakartaee-8.0/javadoc/javax/ejb/Stateless.html">javax.ejb.Stateless</a></p>
</li>
<li>
<p><a href="../../../jakartaee-8.0/javadoc/javax/ejb/embeddable/EJBContainer.html">javax.ejb.embeddable.EJBContainer</a></p>
</li>
</ul>
</div>
</div>
</div>
</div>
</div>
</div>
<footer>
<div class="container">
<div class="row">
<div class="col-sm-6 text-center-mobile">
<h3 class="white">Be simple. Be certified. Be Tomcat.</h3>
<h5 class="light regular light-white">"A good application in a good server"</h5>
<ul class="social-footer">
<li><a href="https://www.facebook.com/ApacheTomEE/"><i class="fa fa-facebook"></i></a></li>
<li><a href="https://twitter.com/apachetomee"><i class="fa fa-twitter"></i></a></li>
<li><a href="https://plus.google.com/communities/105208241852045684449"><i class="fa fa-google-plus"></i></a></li>
</ul>
</div>
<div class="col-sm-6 text-center-mobile">
<div class="row opening-hours">
<div class="col-sm-3 text-center-mobile">
<h5><a href="../../../latest/docs/" class="white">Documentation</a></h5>
<ul class="list-unstyled">
<li><a href="../../../latest/docs/admin/configuration/index.html" class="regular light-white">How to configure</a></li>
<li><a href="../../../latest/docs/admin/file-layout.html" class="regular light-white">Dir. Structure</a></li>
<li><a href="../../../latest/docs/developer/testing/index.html" class="regular light-white">Testing</a></li>
<li><a href="../../../latest/docs/admin/cluster/index.html" class="regular light-white">Clustering</a></li>
</ul>
</div>
<div class="col-sm-3 text-center-mobile">
<h5><a href="../../../latest/examples/" class="white">Examples</a></h5>
<ul class="list-unstyled">
<li><a href="../../../latest/examples/simple-cdi-interceptor.html" class="regular light-white">CDI Interceptor</a></li>
<li><a href="../../../latest/examples/rest-cdi.html" class="regular light-white">REST with CDI</a></li>
<li><a href="../../../latest/examples/ejb-examples.html" class="regular light-white">EJB</a></li>
<li><a href="../../../latest/examples/jsf-managedBean-and-ejb.html" class="regular light-white">JSF</a></li>
</ul>
</div>
<div class="col-sm-3 text-center-mobile">
<h5><a href="../../../community/index.html" class="white">Community</a></h5>
<ul class="list-unstyled">
<li><a href="../../../community/contributors.html" class="regular light-white">Contributors</a></li>
<li><a href="../../../community/social.html" class="regular light-white">Social</a></li>
<li><a href="../../../community/sources.html" class="regular light-white">Sources</a></li>
</ul>
</div>
<div class="col-sm-3 text-center-mobile">
<h5><a href="../../../security/index.html" class="white">Security</a></h5>
<ul class="list-unstyled">
<li><a href="http://apache.org/security" target="_blank" class="regular light-white">Apache Security</a></li>
<li><a href="http://apache.org/security/projects.html" target="_blank" class="regular light-white">Security Projects</a></li>
<li><a href="http://cve.mitre.org" target="_blank" class="regular light-white">CVE</a></li>
</ul>
</div>
</div>
</div>
</div>
<div class="row bottom-footer text-center-mobile">
<div class="col-sm-12 light-white">
<p>Copyright &copy; 1999-2016 The Apache Software Foundation, Licensed under the Apache License, Version 2.0. Apache TomEE, TomEE, Apache, the Apache feather logo, and the Apache TomEE project logo are trademarks of The Apache Software Foundation. All other marks mentioned may be trademarks or registered trademarks of their respective owners.</p>
</div>
</div>
</div>
</footer>
<!-- Holder for mobile navigation -->
<div class="mobile-nav">
<ul>
<li><a hef="../../../latest/docs/admin/index.html">Administrators</a>
<li><a hef="../../../latest/docs/developer/index.html">Developers</a>
<li><a hef="../../../latest/docs/advanced/index.html">Advanced</a>
<li><a hef="../../../community/index.html">Community</a>
</ul>
<a href="#" class="close-link"><i class="arrow_up"></i></a>
</div>
<!-- Scripts -->
<script src="../../../js/jquery-1.11.1.min.js"></script>
<script src="../../../js/owl.carousel.min.js"></script>
<script src="../../../js/bootstrap.min.js"></script>
<script src="../../../js/wow.min.js"></script>
<script src="../../../js/typewriter.js"></script>
<script src="../../../js/jquery.onepagenav.js"></script>
<script src="../../../js/tree.jquery.js"></script>
<script src="../../../js/highlight.pack.js"></script>
<script src="../../../js/main.js"></script>
</body>
</html>