org.apache.woden.ant

Class ObjectIdTable

java.lang.Object

org.apache.woden.ant.ObjectIdTable

public class ObjectIdTable
extends Object

Provides a completely safe way to generate unique ids for equivalence classes of objects. Equivalent objects are assigned the same ids. Inequivalent objects are assigned different ids. Here equivalance is defined by the equals() method which is used by HashMap. Experience has shown that hashCode() occasionally produces the same hash for different objects. Note that the objects are permanently stored, so only use this class when serializing objects in an XML file. A count is kept and assigned to each object equivalence class as it is added.

Author:

Arthur Ryman (ryman@ca.ibm.com, arthur.ryman@gmail.com)

Constructor Summary

Constructors

Constructor and Description
ObjectIdTable()

Method Summary

Modifier and Type	Method and Description
int	id(Object o) Returns a unique integer for the equivalence class of the object.

Methods inherited from class java.lang.Object

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

Constructor Detail

ObjectIdTable

public ObjectIdTable()

Method Detail

id

public int id(Object o)

Returns a unique integer for the equivalence class of the object.

Parameters:

o - An object.

Returns:

A unique id for the object.