org.apache.bsf.util
Class ObjectRegistry

java.lang.Object
  org.apache.bsf.util.ObjectRegistry

public class ObjectRegistry

extends java.lang.Object

The ObjectRegistry is used to do name-to-object reference lookups. If an ObjectRegistry is passed as a constructor argument, then this ObjectRegistry will be a cascading registry: when a lookup is invoked, it will first look in its own table for a name, and if it's not there, it will cascade to the parent ObjectRegistry. All registration is always local. [??]

Author:

Sanjiva Weerawarana, Matthew J. Duftler

Field Summary

(package private) ObjectRegistry	parent
(package private) java.util.Hashtable	reg

Constructor Summary

ObjectRegistry()

ObjectRegistry(ObjectRegistry parent)

Method Summary

java.lang.Object	lookup(java.lang.String name)
void	register(java.lang.String name, java.lang.Object obj)
void	unregister(java.lang.String name)

Methods inherited from class java.lang.Object

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

Field Detail

reg

java.util.Hashtable reg

parent

ObjectRegistry parent

Constructor Detail

ObjectRegistry

public ObjectRegistry()

ObjectRegistry

public ObjectRegistry(ObjectRegistry parent)

Method Detail

lookup

public java.lang.Object lookup(java.lang.String name)
                        throws java.lang.IllegalArgumentException

Throws:

java.lang.IllegalArgumentException

register

public void register(java.lang.String name,
                     java.lang.Object obj)

unregister

public void unregister(java.lang.String name)