[openejb-scm] [confluence] OPENEJB : Tomcat+ejb-refs

Mon, 07 Nov 2005 11:30:34 -0800

Page Created : OPENEJB : Tomcat ejb-refs

Tomcat ejb-refs has been created by David Blevins (Nov 07, 2005).

Content:

Adding ejb-ref in your web.xml

An example is best for this. Say you had a block like the following in your web.xml file.

<ejb-ref>
 <description> EJB Reference to the bean deployed to OpenEJB </description>
 <ejb-ref-name>ejb/hello</ejb-ref-name>
 <ejb-ref-type>Session</ejb-ref-type>
 <home>org.acme.HelloHome</home>
 <remote>org.acme.Hello</remote> 
</ejb-ref>


Adding the Ejb in your server.xml




To make this ejb refence usable in code by your Servlet or JSP, you need to tell Tomcat how to link that to an actual EJB deployed into OpenEJB. This is done in the webapps <Context> section of Tomcat's server.xml file. Here is an example of that:




<Server> 
 ... 
 <Context path=...> ... 
  <Ejb name="ejb/hello" type="Session" home="org.acme.HelloHome" remote="org.acme.Hello"/> 
  <ResourceParams name="ejb/hello"> 
    <parameter> 
      <name>factory</name>
      <value>org.openejb.client.TomcatEjbFactory</value>
    </parameter>
    <parameter>
      <name>openejb.naming.factory.initial</name>
      <value>org.openejb.client.LocalInitialContextFactory</value> 
    </parameter> 
    <parameter> 
      <name>openejb.ejb-link</name> 
      <value>Hello</value> 
    </parameter> 
  </ResourceParams> 
 </Context>
 ... 
</Server>





This would link the name "ejb/hello" to a bean called "Hello" in the OpenEJB container system.



For more information seeLeveraging J2EE JNDI Lookups

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