common
Class MapWithPreimagesDiff

java.lang.Object
  java.util.AbstractMap
      common.AbstractMapWithPreimages
          common.MapWithPreimagesDiff

All Implemented Interfaces:

MapDiff, MapWithPreimages, java.util.Map

public class MapWithPreimagesDiff
extends AbstractMapWithPreimages
implements MapDiff

Represents a map with preimages as a set of differences relative to an underlying map with preimages. Uses a HashMapDiff for the forward mapping and a HashMultiMapDiff for the reverse mapping.

Nested Class Summary

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

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

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

java.util.Map.Entry<K,V>

Nested classes/interfaces inherited from interface common.MapWithPreimages

MapWithPreimages.EmptyMapWithPreimages

Field Summary

Fields inherited from class common.AbstractMapWithPreimages

map, preimages

Fields inherited from interface common.MapWithPreimages

EMPTY_MAP_WITH_PREIMAGES

Constructor Summary

MapWithPreimagesDiff(MapWithPreimages underlying)
Creates a MapWithPreimagesDiff with the given underlying MapWithPreimages.

Method Summary

void	changeUnderlying() Changes the underlying map so it is equal to this map.
void	clearChanges() Resets this map so it is equal to the underlying map.
java.util.Set	getChangedKeys() Returns the set of keys that map to different values in this map than in the underlying map.

Methods inherited from class common.AbstractMapWithPreimages

clear, containsKey, containsValue, entrySet, get, getPreimage, getPreimages, isCorefPair, isEmpty, keySet, numCorefPairs, put, remove, size, values, valueSet

Methods inherited from class java.util.AbstractMap

clone, equals, hashCode, putAll, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Map

clear, containsKey, containsValue, entrySet, equals, get, hashCode, isEmpty, keySet, put, putAll, remove, size, values

Constructor Detail

MapWithPreimagesDiff

public MapWithPreimagesDiff(MapWithPreimages underlying)

Creates a MapWithPreimagesDiff with the given underlying MapWithPreimages. Initially, this object represents no differences relative to the underlying map.

Method Detail

getChangedKeys

public java.util.Set getChangedKeys()

Description copied from interface: MapDiff

Returns the set of keys that map to different values in this map than in the underlying map. This includes any keys that have values in this map but not the underlying map, or vice versa.

The returned set may or may not be kept up to date as changes are made to this MapDiff.

Specified by:

getChangedKeys in interface MapDiff

Returns:

unmodifiable Set of Object

changeUnderlying

public void changeUnderlying()

Description copied from interface: MapDiff

Changes the underlying map so it is equal to this map.

Specified by:

changeUnderlying in interface MapDiff

clearChanges

public void clearChanges()

Description copied from interface: MapDiff

Resets this map so it is equal to the underlying map.

Specified by:

clearChanges in interface MapDiff