gnu.java.io
Class ObjectIdentityMap2Int
This class provides a map from Object to non-negative int values.
Objects are considered equal only if their references are equal.
This can be used to equip objects with an integer id. This class
is implemented to use as little memory as possible, particularly
not to create hashtable buckets and Integer instances for each
mapping.
void | clear()- Clear this map
ensures
((size == 0) && \forall Object o: get(o) == -1)
|
int | get(Object o)- Obtain an element from this map
|
void | put(Object o, int i)- Add a mapping to this Map.
|
clone, equals, extends Object> getClass, finalize, hashCode, notify, notifyAll, toString, wait, wait, wait |
clear
public void clear()
Clear this map
ensures
((size == 0) && \forall Object o: get(o) == -1)
get
public int get(Object o)
Obtain an element from this map
- the corresponding integer id for o or -1 if o has not
been put into this map.
put
public void put(Object o,
int i) Add a mapping to this Map.
ensures
(get(o) == i);
o - object reference or null that is to be mapped.i - the integer id to be associated with o
ObjectIdentityMapToInt.java -- Helper class for faster serialization
Copyright (C) 2006 Free Software Foundation, Inc.
This file is part of GNU Classpath.
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