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:

  • Method Details

    • 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).