com.opmath.util.datastruct
Class LCHashtable

java.lang.Object
  |
  +--java.util.Dictionary
        |
        +--java.util.Hashtable
              |
              +--com.opmath.util.datastruct.OrderedHashtable
                    |
                    +--com.opmath.util.datastruct.LCHashtable

All Implemented Interfaces:

Cloneable, Map, Serializable

Direct Known Subclasses:

ParamTable

public class LCHashtable

extends OrderedHashtable

A functional extension to com.opmath.util.datastruct.OrderedHashtable.

LCHashtable Includes a key normalization method to make keys case-insensitive. In this case keys of type java.lang.String are shifted to lower case. All other keys remain unchanged.

Copyright: (c) 2002 The Open Math Company Limited

The Terms of Distribution of this software are stipulated in the javadoc Overview for this project.

Since:

J2SE 1.3

Version:

utilities-v011

Author:

Bruno Beloff bruno.beloff@opmath.com

See Also:

Serialized Form

Inner classes inherited from class java.util.Map

Map.Entry

Constructor Summary

LCHashtable()
Constructs a new LCHashtable instance.

LCHashtable(ComparableList newKeys)
Constructs a new LCHashtable instance.

LCHashtable(String[] newStrKeys)
Constructs a new LCHashtable instance.

Method Summary

protected Object

normalized(Object key) Used to normalize UCHashtable keys according to the following rules:

Methods inherited from class com.opmath.util.datastruct.OrderedHashtable

containsKey, elements, get, keys, put, putAll, remove, toString

Methods inherited from class java.util.Hashtable

, clear, clone, contains, containsValue, entrySet, equals, hashCode, isEmpty, keySet, rehash, size, values

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

LCHashtable

public LCHashtable()

Constructs a new LCHashtable instance. Its entries will be added later.

Since:

J2SE 1.3

LCHashtable

public LCHashtable(ComparableList newKeys)

Constructs a new LCHashtable instance. Its entries are identified by keys contained in the ComparableList.

NOTE: Multiple instances of the same key are discarded.

Parameters:

newKeys - the ComparableList supplying the keys.

Since:

J2SE 1.3

LCHashtable

public LCHashtable(String[] newStrKeys)

Constructs a new LCHashtable instance. The entries are identified by keys contained in the String array.

NOTE: Multiple instances of the same key are discarded.

Parameters:

newStrKeys - the String[] supplying the keys.

Since:

J2SE 1.3

Method Detail

normalized

protected Object normalized(Object key)

Used to normalize UCHashtable keys according to the following rules:

• If the key is not of type java.lang.String, then return the key unchanged.
• If the key is of type java.lang.String, then return a lowercase version of the key.
• If the key is of type java.lang.String and the class type java.lang.String cannot be found, then report to System.err and return null.

Overrides:

normalized in class OrderedHashtable

Parameters:

key - the Object key to be normalized.

Returns:

the normalized key.

Since:

J2SE 1.3