Package de.aristaflow.adept2.model.common.changetracking

Interface ChangeCombiner

All Superinterfaces:
Serializable
All Known Implementing Classes:
DifferentChangeCombiner, EqualChangeCombiner, SimilarChangeCombiner
public interface ChangeCombiner extends Serializable
Combines two changes depending on how they relate to each other. For instance when changing the very same property value, this is an equal change and therefore ADDED and REMOVED combined are a no-op. Obviously this does not apply to different property values were the combination of ADDED and REMOVED is CHANGED.
Author:
Ulrich Kreher

  • Field Summary

    Fields
    Modifier and Type
    Field
    Description
    static final ChangeCombiner
    DIFFERENT_CHANGES
    The changes are different and therefore most combinations of changes lead to CHANGED.
    static final ChangeCombiner
    EQUAL_CHANGES
    The changes are equal, for instance ADDED and REMOVED as well as REMOVED and ADDED are no-ops.
    static final long
    serialVersionUID
    Generated ID for serialisation.
    static final ChangeCombiner
    SIMILAR_CHANGES
    The changes are similar, for instance ADDED and REMOVED is a no-op but REMOVED and ADDED is CHANGED.

  • Method Summary

    Modifier and Type
    Method
    Description
    ChangeType
    combineChanges(ChangeType type1, ChangeType type2)
    Combines two changes, for a property.

  • Field Details

    • serialVersionUID

      static final long serialVersionUID
      Generated ID for serialisation.
      See Also:

    • EQUAL_CHANGES

      static final ChangeCombiner EQUAL_CHANGES
      The changes are equal, for instance ADDED and REMOVED as well as REMOVED and ADDED are no-ops.

    • SIMILAR_CHANGES

      static final ChangeCombiner SIMILAR_CHANGES
      The changes are similar, for instance ADDED and REMOVED is a no-op but REMOVED and ADDED is CHANGED.

    • DIFFERENT_CHANGES

      static final ChangeCombiner DIFFERENT_CHANGES
      The changes are different and therefore most combinations of changes lead to CHANGED.

  • Method Details

    • combineChanges

      ChangeType combineChanges(ChangeType type1, ChangeType type2)
      Combines two changes, for a property.
      Parameters:
      type1 - The first change to combine. null is treated as NONE.
      type2 - The second change to combine. null is treated as NONE.
      Returns:
      The combination of the two changes relative to a property.