Class NodePropertyChangeOperation

java.lang.Object

org.apache.cayenne.graph.NodeDiff

org.apache.cayenne.graph.NodePropertyChangeOperation

All Implemented Interfaces:

Serializable, Comparable<NodeDiff>, GraphDiff

public class NodePropertyChangeOperation
extends NodeDiff

Since:

1.2

See Also:

• Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
protected Object	newValue
protected Object	oldValue
protected String	property

Fields inherited from class NodeDiff

diffId, nodeId

Modifier and Type	Field	Description
protected int	diffId
protected Object	nodeId

Constructor Summary

Constructors

Constructor	Description
NodePropertyChangeOperation(Object nodeId, String property, Object oldValue, Object newValue)
NodePropertyChangeOperation(Object nodeId, String property, Object oldValue, Object newValue, int diffId)

Method Summary

Modifier and Type	Method	Description
void	apply(GraphChangeHandler tracker)	Calls appropriate methods on the handler to "replay" this change.
String	getProperty()
boolean	isNoop()	Returns true if both old and new value are equal.
void	undo(GraphChangeHandler tracker)	Calls appropriate methods on the handler to revert this change.

Methods inherited from class NodeDiff

compareTo, getDiffId, getNodeId, 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()
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

property

protected String property

oldValue

protected Object oldValue

newValue

protected Object newValue

Constructor Details

NodePropertyChangeOperation

public NodePropertyChangeOperation(Object nodeId,
 String property,
 Object oldValue,
 Object newValue)

NodePropertyChangeOperation

public NodePropertyChangeOperation(Object nodeId,
 String property,
 Object oldValue,
 Object newValue,
 int diffId)

Method Details

getProperty

public String getProperty()

Since:

3.0

isNoop

public boolean isNoop()

Returns true if both old and new value are equal.

Specified by:

isNoop in interface GraphDiff

Overrides:

isNoop in class NodeDiff

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