jrun.naming
Class ENCFactory

java.lang.Object
  |
  +--jrun.naming.ENCFactory

All Implemented Interfaces:

javax.naming.spi.ObjectFactory

public final class ENCFactory

extends java.lang.Object

implements javax.naming.spi.ObjectFactory

The java:comp/env Context, aka the Environmental Naming Context (ENC) is special to J2EE. It is a component-specific namespace not visible to other components (even in the same application). This ENCFactory, which conforms to the JNDI ObjectFactory logic, supplies this unique functionality.

Each component, such as an EJB, owns its own unique ClassLoader. By getting the current requesting Thread's ClassLoader as a key, the factory knows whether a ContextManager exists for the requestor or whether a new one needs to be created. It uses this Thread and ClassLoader association to ensure that each component has a unique ContextManager for the java:comp/env namespace.

Application components should create and initialize their ENC with component-specific values (such as resource refs and the like) at deployment time.

Author:

PS Neville

Constructor Summary

ENCFactory()

Method Summary

java.lang.Object

getObjectInstance(java.lang.Object obj, javax.naming.Name name, javax.naming.Context nameCtx, java.util.Hashtable env)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

ENCFactory

public ENCFactory()

Method Detail

getObjectInstance

public java.lang.Object getObjectInstance(java.lang.Object obj,
                                          javax.naming.Name name,
                                          javax.naming.Context nameCtx,
                                          java.util.Hashtable env)
                                   throws java.lang.Exception

Specified by:

getObjectInstance in interface javax.naming.spi.ObjectFactory