Class ArcDeleteOperation

java.lang.Object

org.apache.cayenne.graph.NodeDiff

org.apache.cayenne.graph.ArcDeleteOperation

All Implemented Interfaces:

Serializable, Comparable<NodeDiff>, GraphDiff

public class ArcDeleteOperation
extends NodeDiff

Since:

1.2

See Also:

• Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
protected ArcId	arcId
protected Object	targetNodeId

Fields inherited from class NodeDiff

diffId, nodeId

Modifier and Type	Field	Description
protected int	diffId
protected Object	nodeId

Constructor Summary

Constructors

Constructor	Description
ArcDeleteOperation(Object nodeId, Object targetNodeId, ArcId arcId)
ArcDeleteOperation(Object nodeId, Object targetNodeId, ArcId arcId, int diffId)

Method Summary

Modifier and Type	Method	Description
void	apply(GraphChangeHandler tracker)	Calls appropriate methods on the handler to "replay" this change.
Object	getArcId()
Object	getTargetNodeId()
void	undo(GraphChangeHandler tracker)	Calls appropriate methods on the handler to revert this change.

Methods inherited from class NodeDiff

compareTo, getDiffId, getNodeId, isNoop, setDiffId

Modifier and Type	Method	Description
int	compareTo(NodeDiff o)	Implements a Comparable interface method to compare based on diffId property.
int	getDiffId()	Returns an id of this diff that can be used for various purposes, such as identifying the order of the diff in a sequence.
Object	getNodeId()
boolean	isNoop()	Returns true if this diff is simply a placeholder and does not perform any actual operation.
void	setDiffId(int diffId)	Sets an id of this diff that can be used for various purposes, such as identifying the order of the diff in a sequence.

Methods inherited from class Object

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

Field Details

targetNodeId

protected Object targetNodeId

arcId

protected ArcId arcId

Constructor Details

ArcDeleteOperation

public ArcDeleteOperation(Object nodeId,
 Object targetNodeId,
 ArcId arcId)

ArcDeleteOperation

public ArcDeleteOperation(Object nodeId,
 Object targetNodeId,
 ArcId arcId,
 int diffId)

Method Details

apply

public void apply(GraphChangeHandler tracker)

Description copied from interface: GraphDiff

Calls appropriate methods on the handler to "replay" this change.

Specified by:

apply in interface GraphDiff

Specified by:

apply in class NodeDiff

undo

public void undo(GraphChangeHandler tracker)

Description copied from interface: GraphDiff

Calls appropriate methods on the handler to revert this change.

Specified by:

undo in interface GraphDiff

Specified by:

undo in class NodeDiff

getArcId

public Object getArcId()

getTargetNodeId

public Object getTargetNodeId()