org.jpu.patterns.serviceLocator
Class Locator.DefaultNarrowStrategy

java.lang.Object
  org.jpu.patterns.serviceLocator.Locator.DefaultNarrowStrategy

All Implemented Interfaces:

ILocator.INarrowStrategy

Enclosing class:

Locator

public static class Locator.DefaultNarrowStrategy

extends java.lang.Object

implements ILocator.INarrowStrategy

Simple narrow strategy implementation based on "PortableRemoteObject.narrow()".

Constructor Summary

Locator.DefaultNarrowStrategy()

Method Summary

java.lang.Object

narrow(java.lang.Object o, java.lang.Class c) Narrows the given object to the given type.

Methods inherited from class java.lang.Object

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

Constructor Detail

Locator.DefaultNarrowStrategy

public Locator.DefaultNarrowStrategy()

Method Detail

narrow

public java.lang.Object narrow(java.lang.Object o,
                               java.lang.Class c)
                        throws ServiceLocatorException

Description copied from interface: ILocator.INarrowStrategy

Narrows the given object to the given type. If either o or c are null, this method returns o. Otherwise it attempts to narrow using PortableRemoteObject.narrow() and rethrows any exceptions as ServiceLocatorException, wrapping the original exception.

Subclasses are free to override this method; in particular, local homes should not be narrowed using PortableRemoteObject.narrow().

Specified by:

narrow in interface ILocator.INarrowStrategy

Throws:

ServiceLocatorException