How to lookup remote JNDI

java jms jndi ibm-mq mq
Chakri picture Chakri · Mar 7, 2013 · Viewed 8.3k times · Source

Is it possible to lookup remote JNDI in IBM MQ. My scenario is I have an MQ installation on machine A, with JNDI resources(JMS Administered objects in MQ Explorer).Now if I want to connect to MQ via JMS from standalone JAVA class, I can lookup from "file://JNDI_FACTORY". All examples only mention this. But is it possible if I want that standalone JAVA class on machine B. That is machine B has JAVA Class which has to connect to remote JNDI(on machine A) and look up for Connection Factory. Can I use some thing like "hostname of A:port" for property ContextProviderUrl in java class in machine B, to access remote objects from machine A?

Also suggest me on remote JNDI lookup.

Please help!

THANKS CHAKRI

Answer

Shashi picture Shashi · Mar 7, 2013

For simplicity all MQ JMS samples use a File JNDI to demonstrate usage of initial context. You can modify the samples to look up a LDAP server for connection factory and destination information.

First in MQExplorer you need to choose LDAP Server option to save the connection factory and destination information to a LDAP server. Then in your application you need to have code that looks like this:

  String initialContextUrl = "ldap://myhost:991/c=uk,o=ACME"
  String contextFactory = "com.sun.jndi.ldap.LdapCtxFactory";
  Hashtable environment = new Hashtable();
  environment.put(Context.INITIAL_CONTEXT_FACTORY, contextFactory);
  environment.put(Context.PROVIDER_URL, initialContextUrl);
  Context context = new InitialDirContext(environment);

Please see the Infocenter topic Using JNDI to retrieve administered objects in a JMS application for details and additional code samples.

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