org.onemind.commons.java.datastructure
Class InheritableValueMap

java.lang.Object
  org.onemind.commons.java.datastructure.InheritableValueMap

public class InheritableValueMap

extends java.lang.Object

Associate a class and an value object and resolve the mapping through the class hierachy. For example, if a value object A is assosiated with Number class that means it is associated with the Number class and all the subclasses of object class. However, if a mapping exists for Integer, the InheritableValueMap will return the value object associated for the Integer. The stopClass controls when the InheritableValueMap stop resolving mapping and return null (when c==stopClass.getSuperClass()). The stopClass also control the hierachy of object that can be added the the map - meaning stopClass.isAssignableFrom(c) must evaluate to true when c is added as mapping key.

Version:

$Id: InheritableValueMap.java,v 1.3 2005/02/17 19:57:31 thlee Exp $ $Name: $

Author:

TiongHiang Lee (thlee@onemindsoft.org)

Constructor Summary

InheritableValueMap()
Use Object.class as stop class {@inheritDoc}

InheritableValueMap(java.lang.Class stopClass)
{@inheritDoc}

Method Summary

java.util.Set	keySet() Return the key classes
void	put(java.lang.Class c, java.lang.Object o) Add the mapping between the class c and the object o.
java.lang.Object	resolve(java.lang.Class c) Resolve the object associated with class c
java.util.Collection	resolveAll(java.lang.Class c) Resolve all the mapping that could have apply to c in class c's inheritance hierachy

Methods inherited from class java.lang.Object

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

Constructor Detail

InheritableValueMap

public InheritableValueMap()

Use Object.class as stop class {@inheritDoc}

InheritableValueMap

public InheritableValueMap(java.lang.Class stopClass)

{@inheritDoc}

Parameters:

stopClass - the stop class

Method Detail

put

public void put(java.lang.Class c,
                java.lang.Object o)

Add the mapping between the class c and the object o. The object o must be the stopClass or a subclass of the stopClass

Parameters:

c - the class

o - the object

resolve

public java.lang.Object resolve(java.lang.Class c)

Resolve the object associated with class c

Parameters:

c - the class

Returns:

the object associated with class c, or null

keySet

public final java.util.Set keySet()

Return the key classes

Returns:

the classes

resolveAll

public java.util.Collection resolveAll(java.lang.Class c)

Resolve all the mapping that could have apply to c in class c's inheritance hierachy

Parameters:

c - the class

Returns:

the Collection contains all the mappings