Package de.xima.fc.workflow.model

Class MapDiff<K,V>

java.lang.Object

de.xima.fc.workflow.model.MapDiff<K,V>

Type Parameters:

K - Type of the map's keys.

V - Type of the map's values.

All Implemented Interfaces:

IMapDiff<K,V>, Serializable

public class MapDiff<K,V>
extends Object
implements IMapDiff<K,V>

Implementation of IMapDiff with a static method for creating a diff between two Maps.

Since:

7.0.0

Author:

XIMA MEDIA GmbH

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from interface de.xima.fc.interfaces.IMapDiff

IMapDiff.IModifiedValue<V>

Method Summary

Modifier and Type	Method	Description
void	applyBackward(Map<K,V> map)	Applies the diff represented by this instance to the given map.
void	applyForward(Map<? super K,? super V> map)	Applies the diff represented by this instance to the given map.
static <K,V> IMapDiff<K,V>	betweenMaps(Map<K,V> oldMap, Map<K,V> newMap)	Computes and returns the difference between two Maps.
static <K,V> IMapDiff<K,V>	empty()
boolean	equals(Object obj)
Map<K,V>	getAddedEntries()
Map<K,IMapDiff.IModifiedValue<V>>	getModifiedEntries()
Map<K,V>	getRemovedEntries()
int	hashCode()

Methods inherited from class java.lang.Object

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

Method Detail

applyBackward

public void applyBackward(Map<K,V> map)

Description copied from interface: IMapDiff

Applies the diff represented by this instance to the given map. If this is called on the map new map used to create the diff, this method turns it into the old map.

Specified by:

applyBackward in interface IMapDiff<K,V>

Parameters:

map - Map to modify.

applyForward

public void applyForward(Map<? super K,? super V> map)

Description copied from interface: IMapDiff

Applies the diff represented by this instance to the given map. If this is called on the map old map used to create the diff, this method turns it into the new map.

Specified by:

applyForward in interface IMapDiff<K,V>

Parameters:

map - Map to modify.

equals

public boolean equals(Object obj)

Overrides:

equals in class Object

getAddedEntries

public Map<K,V> getAddedEntries()

Specified by:

getAddedEntries in interface IMapDiff<K,V>

Returns:

A map with the keys of the newly added entries, and the new value for each key.

getModifiedEntries

public Map<K,IMapDiff.IModifiedValue<V>> getModifiedEntries()

Specified by:

getModifiedEntries in interface IMapDiff<K,V>

Returns:

A map with the keys of the modified entries, together with the old and new value for each key.

getRemovedEntries

public Map<K,V> getRemovedEntries()

Specified by:

getRemovedEntries in interface IMapDiff<K,V>

Returns:

A map with the keys of the removed entries, and the old value for each key.

hashCode

public int hashCode()

Overrides:

hashCode in class Object

betweenMaps

public static <K,V> IMapDiff<K,V> betweenMaps(Map<K,V> oldMap,
                                                          Map<K,V> newMap)

Computes and returns the difference between two Maps.

Type Parameters:

K - Type of the map's keys.

V - Type of the map's values.

Parameters:

oldMap - Previous map.

newMap - New map.

Returns:

The diff between the two maps.

empty

public static <K,V> IMapDiff<K,V> empty()

Returns:

A diff with no entries (no added, removed, or modified entries).