local.tomas.util.collections
Class MappedMap<K,J,F,T>

java.lang.Object
  local.tomas.util.collections.MappedMap<K,J,F,T>

Type Parameters:

K - mapped map key type

J - base map key type

F - base map value type

T - mapped map value type

All Implemented Interfaces:

Map<K,T>

Direct Known Subclasses:

SimpleMappedMap

public class MappedMap<K,J,F,T>
extends Object
implements Map<K,T>

Mapped map. The mapped map maps the values of a base map to the values of a target map using two mappings passed to the constructor. The resulting map is defined as follows:

 mapped_map[key] := value_mapping(base_map[key_mapping(key)])
 

Author:

tomas.teubner

Nested Class Summary

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

Map.Entry<K,V>

Field Summary

protected ObjectMapping<J>	keyMapping
protected Map<J,F>	map
protected ObjectMapping<T>	valueMapping

Constructor Summary

MappedMap(Map<J,F> map, ObjectMapping<J> keyMapping, ObjectMapping<T> valueMapping)
Construct mapped map.

Method Summary

void	clear()
boolean	containsKey(Object key)
boolean	containsValue(Object value)
Set<Map.Entry<K,T>>	entrySet()
T	get(Object key)
boolean	isEmpty()
Set<K>	keySet()
T	put(K key, T value)
void	putAll(Map<? extends K,? extends T> t)
T	remove(Object key)
int	size()
Collection<T>	values()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface java.util.Map

equals, hashCode

Field Detail

map

protected Map<J,F> map

keyMapping

protected ObjectMapping<J> keyMapping

valueMapping

protected ObjectMapping<T> valueMapping

Constructor Detail

MappedMap

public MappedMap(Map<J,F> map,
                 ObjectMapping<J> keyMapping,
                 ObjectMapping<T> valueMapping)

Construct mapped map.

Parameters:

map - base map

keyMapping - maps target keys to base keys

valueMapping - maps base values to target values

Method Detail

size

public int size()

Specified by:

size in interface Map<K,T>

isEmpty

public boolean isEmpty()

Specified by:

isEmpty in interface Map<K,T>

containsKey

public boolean containsKey(Object key)

Specified by:

containsKey in interface Map<K,T>

containsValue

public boolean containsValue(Object value)

Specified by:

containsValue in interface Map<K,T>

get

public T get(Object key)

Specified by:

get in interface Map<K,T>

put

public T put(K key,
             T value)

Specified by:

put in interface Map<K,T>

Throws:

UnsupportedOperationException - when invoked

remove

public T remove(Object key)

Specified by:

remove in interface Map<K,T>

putAll

public void putAll(Map<? extends K,? extends T> t)

Specified by:

putAll in interface Map<K,T>

Throws:

UnsupportedOperationException - when invoked

clear

public void clear()

Specified by:

clear in interface Map<K,T>

keySet

public Set<K> keySet()

Specified by:

keySet in interface Map<K,T>

Throws:

UnsupportedOperationException - when invoked

values

public Collection<T> values()

Specified by:

values in interface Map<K,T>

entrySet

public Set<Map.Entry<K,T>> entrySet()

Specified by:

entrySet in interface Map<K,T>

Throws:

UnsupportedOperationException - when invoked