You must take extra steps to enable your programs to interoperate with non-product JNDI clients and to bind resources from MQSeries® to a namespace.
When an enterprise bean (EJB) application running in WebSphere Application Server is accessed by a non-product EJB client, the JNDI initial context factory is presumed to be a non-product implementation. In this case, the default initial context is the cell root. If the JNDI service provider being used supports CORBA object URLs, the corbaname format can be used to look up the EJB home.
The construction of the stringified name depends on whether the object is installed on a single server or cluster.
initialContext.lookup( "corbaname:iiop:myHost:2809#cell/nodes/node1/servers/server1/myEJB");
initialContext.lookup( "corbaname:iiop:myHost:2809#cell/clusters/myCluster/myEJB");
The lookup works with any name server bootstrap host and port configured in the same cell.
The lookup also works if the bootstrap host and port belong to a member of the cluster itself. To avoid a single point of failure, the bootstrap server host and port for each cluster member can be listed in the URL as follows:
initialContext.lookup( "corbaname:iiop:host1:9810,:host2:9810#cell/clusters/myCluster/myEJB");
The name prefix cell/clusters/myCluster/ is not necessary if boostrapping to the cluster itself, but it will work. The prefix is needed, however, when looking up enterprise beans in other clusters. Name bindings under the clusters context are implemented on the name server to resolve to the server root of a running cluster member during a lookup; thus avoiding a single point of failure.
Hashtable env = new Hashtable(); env.put(CONTEXT.PROVIDER_URL, "iiop://myHost:2809"); Context ic = new InitialContext(env); Object o = ic.lookup("cell/clusters/myCluster/myEJB");
In releases previous to WebSphere Application Server Version 5.0, the MQSeries jmsadmin tool could be used to bind resources to the namespace. When used with a WebSphere Application Server namespace, the resource is bound within a transient partition in the namespace and does not persist past the life of the server process. Instead of binding the MQSeries resources with the jmsadmin tool, bind them from the administrative console, under Resources in the console navigation tree.