net.sf.molae.pipe.genimpl
Class KeySetIteratorBasedMap<K,V>

java.lang.Object
  java.util.AbstractMap<K,V>
      net.sf.molae.pipe.genimpl.KeySetBasedMap<K,V>
          net.sf.molae.pipe.genimpl.KeySetIteratorBasedMap<K,V>

All Implemented Interfaces:

Map<K,V>

Direct Known Subclasses:

ResourceBundleAsMap

public abstract class KeySetIteratorBasedMap<K,V>
extends KeySetBasedMap<K,V>

Base class for maps that are defined by a key set iterator and a mapping that defines the key for each value. An AbstactSet based skeleton implementaion of the keySet is provided. Inheriting classes must implement getKeySetIterator() and get(Object). To implement a modifiable map, the programmer must additionally override this class's put(Object,Object) method (which otherwise throws an UnsupportedOperationException), and the iterator returned by keySet().iterator() must additionally implement its remove method.

Nested Class Summary

protected class

KeySetIteratorBasedMap.KeySet Provides a standard implementation of the key set of the map.

Nested classes/interfaces inherited from class java.util.AbstractMap

AbstractMap.SimpleEntry<K,V>, AbstractMap.SimpleImmutableEntry<K,V>

Nested classes/interfaces inherited from interface java.util.Map

Map.Entry<K,V>

Constructor Summary

KeySetIteratorBasedMap()

Method Summary

protected abstract Iterator<K>	getKeySetIterator() Returns the iterator of the key set.
Set<K>	keySet() Returns a set view of the keys contained in this map.
int	size() Returns the number of mappings in this map.

Methods inherited from class net.sf.molae.pipe.genimpl.KeySetBasedMap

clear, containsKey, entrySet, get, remove

Methods inherited from class java.util.AbstractMap

clone, containsValue, equals, hashCode, isEmpty, put, putAll, toString, values

Methods inherited from class java.lang.Object

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

Constructor Detail

KeySetIteratorBasedMap

public KeySetIteratorBasedMap()

Method Detail

getKeySetIterator

protected abstract Iterator<K> getKeySetIterator()

Returns the iterator of the key set.

Returns:

the iterator of the key set

size

public int size()

Returns the number of mappings in this map. This implementation uses the key set iterator to count the elements in this set.

Specified by:

size in interface Map<K,V>

Overrides:

size in class KeySetBasedMap<K,V>

Returns:

the number of mappings in this map

keySet

public Set<K> keySet()

Returns a set view of the keys contained in this map. This implementation returns an instance of the inner class KeySet.

Specified by:

keySet in interface Map<K,V>

Specified by:

keySet in class KeySetBasedMap<K,V>

Returns:

a set view of the keys contained in this map.