Package org.apache.cayenne.graph
Interface GraphDiff
-
- All Superinterfaces:
Serializable
- All Known Implementing Classes:
ArcCreateOperation,ArcDeleteOperation,CompoundDiff,NodeCreateOperation,NodeDeleteOperation,NodeDiff,NodeIdChangeOperation,NodePropertyChangeOperation
public interface GraphDiff extends Serializable
Represents a change in an object graph. This can be a simple change (like a node property update) or a composite change that consists of a number of smaller changes.- Since:
- 1.2
-
-
Method Summary
All Methods Instance Methods Abstract Methods Modifier and Type Method Description voidapply(GraphChangeHandler handler)Calls appropriate methods on the handler to "replay" this change.booleanisNoop()Returns true if this diff is simply a placeholder and does not perform any actual operation.voidundo(GraphChangeHandler handler)Calls appropriate methods on the handler to revert this change.
-
-
-
Method Detail
-
isNoop
boolean isNoop()
Returns true if this diff is simply a placeholder and does not perform any actual operation.
-
apply
void apply(GraphChangeHandler handler)
Calls appropriate methods on the handler to "replay" this change.
-
undo
void undo(GraphChangeHandler handler)
Calls appropriate methods on the handler to revert this change.
-
-