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| Code Block |
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| title | Usable by EJB, Interceptor, Servlet, Filter, or Listener |
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package org.superbiz.refs;
import javax.ejb.EJB;
import javax.ejb.Stateless;
import javax.naming.InitialContext;
@Stateless
@EJB(name = "myFooEjb", beanInterface = FooLocal.class)
public class MyEjbLocalRefBean implements MyBeanInterface {
@EJB
private BarLocal myBarEjb;
public void someBusinessMethod() throws Exception {
if (myBarEjb == null) throw new NullPointerException("myBarEjb not injected");
// Both can be looked up from JNDI as well
InitialContext context = new InitialContext();
FooLocal fooLocal = (FooLocal) context.lookup("java:comp/env/myFooEjb");
BarLocal barLocal = (BarLocal) context.lookup("java:comp/env/org.superbiz.refs.MyEjbLocalRefBean/myBarEjb");
}
}
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Via xml
The above @EJB annotation usage is 100% equivalent to the following xml.
| Code Block |
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| xml |
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| xml |
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| title | ejb-jar.xml or web.xml |
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<ejb-local-ref>
<ejb-ref-name>myFooEjb</ejb-ref-name>
<local>org.superbiz.refs.FooLocal</local>
</ejb-local-ref>
<ejb-local-ref>
<ejb-ref-name>org.superbiz.refs.MyEjbLocalRefBean/myBarEjb</ejb-ref-name>
<local>org.superbiz.refs.BarLocal</local>
<injection-target>
<injection-target-class>org.superbiz.refs.MyEjbLocalRefBean</injection-target-class>
<injection-target-name>myBarEjb</injection-target-name>
</injection-target>
</ejb-local-ref>
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