Hi mark,

I solved my JNDI federation problem and maybe you are interested to know how ?

<JustToRememberMyProblem>
  I want to get JMS ressources from JNDI. They're stored in a FileSystem JNDI
  and I need to federate it to Tomcat JNDI.
</JustToRememberMyProblem>


I added a custom factory to tomcat (in commons/classes):

import java.util.Enumeration;
import java.util.Hashtable;
import java.util.Properties;
import javax.naming.Context;
import javax.naming.InitialContext;
import javax.naming.Name;
import javax.naming.NameClassPair;
import javax.naming.NamingEnumeration;
import javax.naming.NamingException;
import javax.naming.RefAddr;
import javax.naming.Reference;
import javax.naming.spi.ObjectFactory;

public class JndiFederationFactory implements ObjectFactory {

public Object getObjectInstance(
    Object obj,
    Name name,
    Context nameCtx,
    Hashtable environment)
   throws NamingException {

   Reference ref = (Reference) obj;
   Enumeration addrs = ref.getAll();
   String lookup = null;
   Properties props = new Properties();
   while (addrs.hasMoreElements()) {
      RefAddr addr = (RefAddr) addrs.nextElement();
      String type = addr.getType();
      String value = (String) addr.getContent();
      if (type.equals("lookup")) {
        lookup = value;
      } else {
        props.put(type, value);
      }
   }
   InitialContext ctx = new InitialContext(props);
   if (lookup == null) {
    throw new NamingException("la propri�t?lookup doit �tre d�finie");
   }
   return ctx.lookup(lookup);
}
}


I added IBM MQSeries/JMS client classes to commons/lib

I added this conf in server.xml :

      <Resource name="jms/QueueConnexionFactory" auth="Container"
            type="javax.jms.QueueConnexionFactory"/>
      <ResourceParams name="jms/QueueConnexionFactory">
       <parameter>
        <name>factory</name>
        <value>com.cgey.JndiFederationFactory</value>
       </parameter>
       <parameter>
        <name>lookup</name>
        <value>urlQmgrLocal</value>
       </parameter>
       <parameter>
        <name>java.naming.factory.initial</name>
        <value>com.sun.jndi.fscontext.RefFSContextFactory</value>
       </parameter>
       <parameter>
        <name>java.naming.security.authentication</name>
        <value>none</value>
       </parameter>
       <parameter>
        <name>java.naming.provider.url</name>
        <value>file:///c:/MQSeries/jndi</value>
       </parameter>
      </ResourceParams>

Using this, I can lookup in local JNDI from my webapp for "jms/QueueConnexionFactory" and get the MQSeries
QueueConnexionFactory defined in a FileSystem JNDI Context. This is a pseudo JNDI Federation, but it works fine.

Nico.


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