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<h1>CDI @ApplicationScoped</h1>
</div>
</div>
</div>
<div class="row">
<div class="col-md-12">
<div id="preamble">
<div class="sectionbody">
<div class="paragraph">
<p>Este exemplo mostra o uso da anotação <code>@ApplicationScoped</code> para objetos injetados. Um objeto
que é definido como <code>@ApplicationScoped</code> é criado apenas uma vez durante toda a aplicação.</p>
</div>
</div>
</div>
<div class="sect1">
<h2 id="_exemplo">Exemplo</h2>
<div class="sectionbody">
<div class="paragraph">
<p>Este cenário é similar ao do exemplo cdi-request-scope. Um visitante do restaurante pede uma sopa ao garçom.
O garçom então entrega a sopa para o visitante. Outro visitante pode pedir a mesma sopa que visitante anterior pediu - nessa situação que o <code>@ApplicationScoped</code> é usado.</p>
</div>
<div class="sect2">
<h3 id="_garçom_waiter">Garçom (Waiter)</h3>
<div class="paragraph">
<p>O <code>Waiter</code> session bean recebe uma requisição da classe de teste através do método <code>orderSoup()</code> passando o nome pelo parâmetro <code>soup</code> (sopa). O método <code>orderWhatTheOtherGuyHad()</code> retorna o valor (nome da sopa) do campo <code>soup</code>.</p>
</div>
<div class="listingblock">
<div class="content">
<pre class="highlight"><code class="language-java" data-lang="java">@Stateless
public class Waiter {
@Inject
public Soup soup;
public String orderSoup(String name){
soup.setName(name);
return soup.getName();
}
public String orderWhatTheOtherGuyHad() {
String name = soup.getName();
return name;
}
}</code></pre>
</div>
</div>
</div>
<div class="sect2">
<h3 id="_sopa">Sopa</h3>
<div class="paragraph">
<p>A classe <code>Soup</code> (sopa) é um POJO injetável definido como <code>@ApplicationScoped</code>. Isso significa que a instancia será criada apenas uma vez durante toda execução da aplicação. Tente mudar a anotação <code>@ApplicationScoped</code> para <code>@RequestScoped</code> e veja o que acontece.</p>
</div>
<div class="listingblock">
<div class="content">
<pre class="highlight"><code class="language-java" data-lang="java">@ApplicationScoped
public class Soup {
private String name = "Soup of the day";
@PostConstruct
public void afterCreate() {
System.out.println("Soup created");
}
public String getName() {
return name;
}
public void setName(String name){
this.name = name;
}
}</code></pre>
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</div>
<div class="sect1">
<h2 id="_caso_de_teste">Caso de teste</h2>
<div class="sectionbody">
<div class="paragraph">
<p>Esta é a classe de entrada para este exemplo. Primeiramente é feito um pedido da sopa através do método <code>orderSoup()</code>
O atributo <code>soup</code> recebe o nome da sopa. Depois o método <code>orderWhatTheOtherGuyHad()</code> retorna a sopa do contexto da aplicação.</p>
</div>
<div class="listingblock">
<div class="content">
<pre class="highlight"><code class="language-java" data-lang="java">public class RestaurantTest {
private static String TOMATO_SOUP = "Tomato Soup";
private EJBContainer container;
@EJB
private Waiter joe;
@Before
public void startContainer() throws Exception {
container = EJBContainer.createEJBContainer();
container.getContext().bind("inject", this);
}
@Test
public void orderSoup(){
String someSoup = joe.orderSoup(TOMATO_SOUP);
assertEquals(TOMATO_SOUP, someSoup);
String sameSoup = joe.orderWhatTheOtherGuyHad();
assertEquals(TOMATO_SOUP, sameSoup);
}
@After
public void closeContainer() throws Exception {
container.close();
}
}</code></pre>
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</div>
<div class="sect1">
<h2 id="_executando">Executando</h2>
<div class="sectionbody">
<div class="paragraph">
<p>Na saida voce pode ver que existe apenas uma instancia de <code>Soup</code> criada, apenas uma para toda a aplicação.</p>
</div>
<div class="listingblock">
<div class="content">
<pre class="highlight"><code class="language-console" data-lang="console">-------------------------------------------------------
T E S T S
-------------------------------------------------------
Running org.superbiz.cdi.applicationscope.RestaurantTest
Apache OpenEJB 7.0.0-SNAPSHOT build: 20111224-11:09
http://tomee.apache.org/
INFO - openejb.home = C:\Users\Daniel\workspaces\openejb\openejb\examples\cdi-application-scope
INFO - openejb.base = C:\Users\Daniel\workspaces\openejb\openejb\examples\cdi-application-scope
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: c:\Users\Daniel\workspaces\openejb\openejb\examples\cdi-application-scope\target\classes
INFO - Beginning load: c:\Users\Daniel\workspaces\openejb\openejb\examples\cdi-application-scope\target\classes
INFO - Configuring enterprise application: c:\Users\Daniel\workspaces\openejb\openejb\examples\cdi-application-scope
INFO - Configuring Service(id=Default Managed Container, type=Container, provider-id=Default Managed Container)
INFO - Auto-creating a container for bean cdi-application-scope.Comp: Container(type=MANAGED, id=Default Managed Container)
INFO - Configuring Service(id=Default Stateless Container, type=Container, provider-id=Default Stateless Container)
INFO - Auto-creating a container for bean Waiter: Container(type=STATELESS, id=Default Stateless Container)
INFO - Enterprise application "c:\Users\Daniel\workspaces\openejb\openejb\examples\cdi-application-scope" loaded.
INFO - Assembling app: c:\Users\Daniel\workspaces\openejb\openejb\examples\cdi-application-scope
INFO - Jndi(name="java:global/cdi-application-scope/Waiter!org.superbiz.cdi.applicationscope.Waiter")
INFO - Jndi(name="java:global/cdi-application-scope/Waiter")
INFO - Created Ejb(deployment-id=Waiter, ejb-name=Waiter, container=Default Stateless Container)
INFO - Started Ejb(deployment-id=Waiter, ejb-name=Waiter, container=Default Stateless Container)
INFO - Deployed Application(path=c:\Users\Daniel\workspaces\openejb\openejb\examples\cdi-application-scope)
Soup created
INFO - Undeploying app: c:\Users\Daniel\workspaces\openejb\openejb\examples\cdi-application-scope
Tests run: 1, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 1.42 sec
Results :
Tests run: 1, Failures: 0, Errors: 0, Skipped: 0</code></pre>
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