com.opmath.util.datastruct
Class UCHashtable

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

All Implemented Interfaces:

Cloneable, Map, Serializable

Direct Known Subclasses:

ComparableTable

public class UCHashtable

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 upper 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

UCHashtable()
Constructs a new UCHashtable instance.

UCHashtable(ComparableList newKeys)
Constructs a new UCHashtable instance.

UCHashtable(String[] newStrKeys)
Constructs a new UCHashtable 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

UCHashtable

public UCHashtable()

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

Since:

J2SE 1.3

UCHashtable

public UCHashtable(ComparableList newKeys)

Constructs a new UCHashtable 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

UCHashtable

public UCHashtable(String[] newStrKeys)

Constructs a new UCHashtable 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 an uppercase 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