Package io.permazen.change

Class SetFieldClear<T>

java.lang.Object

io.permazen.change.Change<T>

io.permazen.change.FieldChange<T>

io.permazen.change.SetFieldChange<T>

io.permazen.change.SetFieldClear<T>

Type Parameters:

T - the type of the object containing the changed field

public class SetFieldClear<T>
extends SetFieldChange<T>

Notification object that gets passed to @OnChange-annotated methods when a set field is cleared.

Constructor Summary

Constructors

Constructor	Description
SetFieldClear(T jobj, String fieldName)	Constructor.

Method Summary

Modifier and Type	Method	Description
void	apply(PermazenTransaction jtx, PermazenObject jobj)	Apply this change to the given object in the given transaction.
String	toString()
<R> R	visit(ChangeSwitch<R> target)	Apply visitor pattern.

Methods inherited from class io.permazen.change.FieldChange

equals, getFieldName, hashCode

Methods inherited from class io.permazen.change.Change

apply, apply, apply, getObject, getPermazenObject

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Details

SetFieldClear

public SetFieldClear(T jobj,
 String fieldName)

Constructor.

Parameters:

jobj - Java object containing the set field that was cleared

fieldName - the name of the field that changed

Throws:

IllegalArgumentException - if jobj or fieldName is null

Method Details

visit

public <R> R visit(ChangeSwitch<R> target)

Description copied from class: Change

Apply visitor pattern. Invokes the method of target corresponding to this instance's type.

Specified by:

visit in class Change<T>

Type Parameters:

R - visitor return type

Parameters:

target - visitor pattern target

Returns:

value returned by the selected method of target

apply

public void apply(PermazenTransaction jtx,
 PermazenObject jobj)

Description copied from class: Change

Apply this change to the given object in the given transaction.

Specified by:

apply in class Change<T>

Parameters:

jtx - the transaction in which to apply this change

jobj - the target object to which to apply this change

toString

public String toString()

Overrides:

toString in class Object