net.sf.molae.pipe.trafo
Class KeyTransformedMap

java.lang.Object
  |
  +--java.util.AbstractMap
        |
        +--net.sf.molae.pipe.basic.AbstractMapWithSet
              |
              +--net.sf.molae.pipe.trafo.EntryTransformedMap
                    |
                    +--net.sf.molae.pipe.trafo.KeyTransformedMap

All Implemented Interfaces:

Map

public final class KeyTransformedMap

extends EntryTransformedMap

Provides a different view to an existing map by transforming the key of every entry.

Since:

1.1

Inner classes inherited from class net.sf.molae.pipe.basic.AbstractMapWithSet

AbstractMapWithSet.EntrySet

Inner classes inherited from class java.util.Map

Map.Entry

Constructor Summary

KeyTransformedMap(Map base, Transformer transformer)
Constructs a KeyTransformedMap object.

Method Summary

boolean	containsKey(Object key) Returns true if the base map contains a mapping with a key that would transform into the specified key.
boolean	containsValue(Object value)
Object	get(Object key)
Set	keySet() Returns a set view of the keys contained in this map.
Object	put(Object key, Object value)
Object	remove(Object key)
Collection	values()

Methods inherited from class net.sf.molae.pipe.trafo.EntryTransformedMap

clear, getEntrySetIterator, getTransformer, size

Methods inherited from class net.sf.molae.pipe.basic.AbstractMapWithSet

entrySet

Methods inherited from class java.util.AbstractMap

equals, hashCode, isEmpty, putAll, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

KeyTransformedMap

public KeyTransformedMap(Map base,
                         Transformer transformer)

Constructs a KeyTransformedMap object.

Parameters:

base - the underlying map

transformer - the transformer that maps each key to another one

Throws:

NullPointerException - if any of the specified objects is null.

Method Detail

containsKey

public boolean containsKey(Object key)

Returns true if the base map contains a mapping with a key that would transform into the specified key.

Overrides:

containsKey in class AbstractMap

Parameters:

key - key whose presence in this map is to be tested

Returns:

true if the base map contains a mapping with a key that would transform into the specified element.

containsValue

public boolean containsValue(Object value)

Overrides:

containsValue in class AbstractMap

get

public Object get(Object key)

Overrides:

get in class AbstractMap

put

public Object put(Object key,
                  Object value)

Overrides:

put in class AbstractMap

remove

public Object remove(Object key)

Overrides:

remove in class AbstractMap

keySet

public Set keySet()

Description copied from class: AbstractMapWithSet

Returns a set view of the keys contained in this map. This implementation returns a typesafe version of the key set from AbstractMap

Overrides:

keySet in class AbstractMapWithSet

Following copied from class: net.sf.molae.pipe.basic.AbstractMapWithSet

Returns:

a set view of the keys contained in this map.

values

public Collection values()

Overrides:

values in class AbstractMap