org.apache.xml.utils
Class Trie

java.lang.Object
  org.apache.xml.utils.Trie

public class Trie

extends Object

A digital search trie for 7-bit ASCII text The API is a subset of java.util.Hashtable The key must be a 7-bit ASCII string The value may be any Java Object

Nested Class Summary

(package private) class

Trie.Node The node representation for the trie.

Field Summary

static int	ALPHA_SIZE Size of the m_nextChar array.
(package private) Trie.Node	m_Root The root node of the tree.

Constructor Summary

Trie()
Construct the trie.

Method Summary

Object	get(String key) Get an object that matches the key.
Object	put(String key, Object value) Put an object into the trie for lookup.

Methods inherited from class java.lang.Object

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

Field Detail

ALPHA_SIZE

public static final int ALPHA_SIZE

Size of the m_nextChar array.

See Also:

Constant Field Values

m_Root

Trie.Node m_Root

The root node of the tree.

Constructor Detail

Trie

public Trie()

Construct the trie.

Method Detail

put

public Object put(String key,
                  Object value)

Put an object into the trie for lookup.

Parameters:

key - must be a 7-bit ASCII string

value - any java object.

Returns:

The old object that matched key, or null.

get

public Object get(String key)

Get an object that matches the key.

Parameters:

key - must be a 7-bit ASCII string

Returns:

The object that matches the key, or null.