io.permazen.change

Class ListFieldReplace<T,E>

java.lang.Object

io.permazen.change.Change<T>

io.permazen.change.FieldChange<T>

io.permazen.change.ListFieldChange<T>

io.permazen.change.ListFieldReplace<T,E>

Type Parameters:

T - the type of the object containing the changed field

E - the type of the changed list's elements

public class ListFieldReplace<T,E>
extends ListFieldChange<T>

Notification object that gets passed to @OnChange-annotated methods when an element is replaced in a list field.

Constructor Summary

Constructors

Constructor and Description
ListFieldReplace(T jobj, int storageId, String fieldName, int index, E oldValue, E newValue) Constructor.

Method Summary

Modifier and Type	Method and Description
void	apply(JTransaction jtx, JObject jobj) Apply this change to the given object in the given transaction.
boolean	equals(Object obj)
int	getIndex() Get the list index at which the element was replaced.
E	getNewValue() Get the value of the field after the change.
E	getOldValue() Get the value of the field before the change.
int	hashCode()
String	toString()
<R> R	visit(ChangeSwitch<R> target) Apply visitor pattern.

Methods inherited from class io.permazen.change.FieldChange

getFieldName, getStorageId

Methods inherited from class io.permazen.change.Change

apply, apply, apply, getJObject, getObject

Methods inherited from class java.lang.Object

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

Constructor Detail

ListFieldReplace

public ListFieldReplace(T jobj,
                        int storageId,
                        String fieldName,
                        int index,
                        E oldValue,
                        E newValue)

Constructor.

Parameters:

jobj - Java object containing the list field that changed

storageId - the storage ID of the affected field

fieldName - the name of the field that changed

index - the index at which the replacement occurred

oldValue - the old value in the list

newValue - the new value in the list

Throws:

IllegalArgumentException - if jobj or fieldName is null

Method Detail

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(JTransaction jtx,
                  JObject 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

getIndex

public int getIndex()

Get the list index at which the element was replaced.

Returns:

the index at which the value was replaced

getOldValue

public E getOldValue()

Get the value of the field before the change.

Returns:

the replaced value

getNewValue

public E getNewValue()

Get the value of the field after the change.

Returns:

the replacing value

equals

public boolean equals(Object obj)

Overrides:

equals in class FieldChange<T>

hashCode

public int hashCode()

Overrides:

hashCode in class FieldChange<T>

toString

public String toString()

Overrides:

toString in class Object