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WebLogic Server 5.1.0sp9 API Reference

## weblogic.jndi
Class WLInitialContextFactoryDelegate

    java.lang.Object
      |
      +--weblogic.jndi.WLInitialContextFactoryDelegate

public class WLInitialContextFactoryDelegate
extends java.lang.Object
implements javax.naming.spi.InitialContextFactory

The WLInitialContextFactoryDelegate creates initial contexts for accessing the WebLogic naming service. It can also be used to create a multitier connection to another naming service through a WebLogic Server.

To create a WebLogic context from a client, your code must minimally specify this Factory as the initial context factory, and the URL of a WebLogic Server in the JNDI environment, as properties passed to the constructor of InitialContext. Here's an example of the minimal setup required to establish a context:

       Hashtable env = new Hashtable(5);
       env.put(Context.INITIAL_CONTEXT_FACTORY,
               "weblogic.jndi.WLInitialContextFactory");
       env.put(Context.PROVIDER_URL,
               "t3://weblogicServer:7001");
       Context ctx = new InitialContext(env);

For a complete list of standard JNDI properties, see the contants defined in javax.naming.Context. For a list of WebLogic-specific properties, see the constants defined in weblogic.jndi.WLContext.

An Environment object can be used as a type-safe alternative to specifying properties in a Hashtable. Environment comes with a set of built-in defaults:

- If you don't set an initial context factory, the default is to use WLInitialContextFactory.
- If you don't set a principal and password, the default is to use guest/guest.
- If you don't set a server URL, the default is to use "t3://localhost:7001".

The Environment object offers some convenience "setter" methods that provide type-safety (and less chance of typos). Here's how you would write the same example using an Environment object:

       Environment env = new Environment();
       env.setProviderURL("t3://weblogicServer:7001");
       Context ctx = new env.getInitialContext();

Note that here we've depended on the built-in defaults for the initial context factory and a WebLogic user/password. We've supplied the provider URL since it doesn't match the default.

Creating a context from within a server-side object is simpler. You need not specify any properties; those are set for you by the Server. Here's the same example code written for getting a context from within a server-side object:

       Context ctx = new InitialContext();

There is no need to specify a factory or a URL. By default, the server will use WLInitialContextFactory and connect to the local naming service. Use one of the techniques described above to create a context using special properties on the server.

Author:
  Copyright (c) 1999 by BEA Systems, Inc. All Rights Reserved.
  Copyright © 2001 BEA Systems, Inc. All Rights Reserved.
See Also:
  `Context`, `InitialContext`, `WLContext`, `Environment`

Constructor Summary
`WLInitialContextFactoryDelegate()` Default constructor.

Method Summary
`javax.naming.Context` | `getInitialContext(java.util.Hashtable env)` Creates an InitialContext.

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Constructor Detail

### WLInitialContextFactoryDelegate

    public WLInitialContextFactoryDelegate()

  Default constructor.

Method Detail

### getInitialContext

    public final javax.naming.Context getInitialContext(java.util.Hashtable env)
                                                 throws javax.naming.NamingException

  Creates an InitialContext. These properties affect how the context is created and to what naming service the context refers.
  - `java.naming.provider.url`. String that specifies the URL of the WebLogic server that will provide the name service. Defaults to `t3://localhost:7001` if unset. You can also set this property with the `Environment.setProviderURL()` method.
  - `java.naming.provider.delegate.environment`. Optional `java.util.Hashtable` object that can be used to specify the use of a third-party naming service. It contains all the properties needed to create the third-party InitialContext on the WebLogic Server. If this property is specified, the WebLogic Server acts as a router to the third-party name service. Conceptually, the WebLogic Server creates an InitialContext using these properties and then provides the caller with a local context that delegates to this remote context. If this property is specified, the properties `java.naming.security.principal` and `java.naming.security.credentials` are ignored.
  - `java.naming.security.principal`. String that specifies the identity of the principal (user) for security purposes. Defaults to "guest".
  - `java.naming.security.credentials`. String that specifies the password for the principal or, alternatively, an Object that implements the `weblogic.security.acl.UserInfo` interface. If it is a UserInfo object, the property `javax.naming.security.principal` is ignored. Defaults to "guest".
  Specified by:
    getInitialContext in interface javax.naming.spi.InitialContextFactory

  Parameters:
    `env` - Environment used for creating the context
  Returns:
    javax.naming.Context
  Throws:
    javax.naming.NamingException - if the context cannot be created

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