Ways to Get Resources in EJB

Question

Ways to Get Resources in EJB 3_
source: http://javahowto.blogspot.com/2006/06/5-ways-to-get-resources-in-ejb-3.html
Use resource injection with runtime info mapping.
For example,
package com.foo.ejb;
import javax.ejb.Remote;
@Remote public interface ResourceRemote {
public void hello();
package com.foo.ejb;
import javax.annotation.Resource;
import javax.ejb.Stateless;
import javax.sql.DataSource;
@Stateless
public class ResourceBean implements ResourceRemote {
@Resource(name="jdbc/employee")
private DataSource employeeDataSource;You don't need ejb-jar.xml. For portable applications, you will need appserver-specific deployment plan to map the logical name (jdbc/employee) to the actual DataSource configured in the target runtime environment. For JavaEE SDK 5, Glassfish, and Sun Java System Application Server 9, it's sun-ejb-jar.xml:
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE sun-ejb-jar PUBLIC "-//Sun Microsystems, Inc.//DTD Application Server 9.0 EJB 3.0//EN"
"http://www.sun.com/software/appserver/dtds/sun-ejb-jar_3_0-0.dtd">
<sun-ejb-jar>
<enterprise-beans>
<ejb>
<ejb-name>ResourceBean</ejb-name>
*<jndi-name>ResourceBean</jndi-name>*
<resource-ref>
  <res-ref-name>jdbc/employee</res-ref-name>
    <jndi-name>jdbc/__default</jndi-name>
</resource-ref>
</ejb>
</enterprise-beans>
</sun-ejb-jar>
We have a tag like +<jndi-name>ResourceBean</jndi-name>+  in the above. Do we use this jndi-name ? If so, where ?

Answer 1

user575089 wrote:
Do we use this jndi-name ? If so, where ?If you need to look the bean up from JNDI?