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

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