JNDI Concepts

[Prakash Dwivedi]

Nowadays I am studying jndi in detail. I have used JNDI to browse my local file system. What I read about JNDI is that it maintains hierarchical tree like structure, where there is a root context, which may contain one or more sub-context and so on. Also when we write the code in an EJB. What app server does is initializes JNDI with proper drivers,
InitialContext ctx = new InitialContext();


Now my question starts here
I tried following code in my EJB

 
InitialContext ctx  = new InitialContext();
String str = ctx.getNameInNamespace();
System.out.println(str);

It prints �localhost/nodes/localhost/servers/server1� (I am using WSAD 5.0 to run this code).

Again when I try

Enumeration enum = ctx.list("localhost/nodes/localhost/servers/server1");

I get javax.naming.NameNotFoundException: localhost/nodes/localhost/servers/server1�

Why is this happening? Also is it possible to parse whole JNDI Tree? If Yes how?

[Nathaniel Stoddard]

I think you should start enumerating things from the initial context. I don't think you need to include the initial context's real name when you try and enumerate its contents, as it thinks you are trying to enumerate "localhost/nodes/localhost/servers/server1/localhost/nodes/localhost/servers/server1" possibly.

[Prakash Dwivedi]

thnaks Nathaniel,
but InitialContext class doesn't have any list() method with empty parameters. So i need to provide name of the initial context.

[Nathaniel Stoddard]

Ah .. good point. You don't need the prepended "/" or "java:/" ?

[Prakash Dwivedi]

Thanks it worked if i pass empty string