org.apache.batik.util
Class SoftDoublyIndexedTable

java.lang.Object
  |
  +--org.apache.batik.util.SoftDoublyIndexedTable

public class SoftDoublyIndexedTable

extends java.lang.Object

This class represents a doubly indexed hash table, which holds soft references to the contained values..

Inner Class Summary

protected class

SoftDoublyIndexedTable.Entry To manage collisions

Field Summary

protected int	count The number of entries
protected static int	INITIAL_CAPACITY The initial capacity
protected java.lang.ref.ReferenceQueue	referenceQueue The reference queue.
protected SoftDoublyIndexedTable.Entry[]	table The underlying array

Constructor Summary

SoftDoublyIndexedTable()
Creates a new SoftDoublyIndexedTable.

SoftDoublyIndexedTable(int c)
Creates a new DoublyIndexedTable.

Method Summary

void	clear() Clears the table.
java.lang.Object	get(java.lang.Object o1, java.lang.Object o2) Gets the value of a variable
protected int	hashCode(java.lang.Object o1, java.lang.Object o2) Computes a hash code corresponding to the given objects.
java.lang.Object	put(java.lang.Object o1, java.lang.Object o2, java.lang.Object value) Sets a new value for the given variable
protected void	rehash() Rehash the table
protected void	removeClearedEntries() Removes the cleared entries.
int	size() Returns the size of this table.

Methods inherited from class java.lang.Object

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

Field Detail

INITIAL_CAPACITY

protected static final int INITIAL_CAPACITY

The initial capacity

table

protected SoftDoublyIndexedTable.Entry[] table

The underlying array

count

protected int count

The number of entries

referenceQueue

protected java.lang.ref.ReferenceQueue referenceQueue

The reference queue.

Constructor Detail

SoftDoublyIndexedTable

public SoftDoublyIndexedTable()

Creates a new SoftDoublyIndexedTable.

SoftDoublyIndexedTable

public SoftDoublyIndexedTable(int c)

Creates a new DoublyIndexedTable.

Parameters:

c - The inital capacity.

Method Detail

size

public int size()

Returns the size of this table.

get

public java.lang.Object get(java.lang.Object o1,
                            java.lang.Object o2)

Gets the value of a variable

Returns:

the value or null

put

public java.lang.Object put(java.lang.Object o1,
                            java.lang.Object o2,
                            java.lang.Object value)

Sets a new value for the given variable

Returns:

the old value or null

clear

public void clear()

Clears the table.

rehash

protected void rehash()

Rehash the table

hashCode

protected int hashCode(java.lang.Object o1,
                       java.lang.Object o2)

Computes a hash code corresponding to the given objects.

removeClearedEntries

protected void removeClearedEntries()

Removes the cleared entries.