Package org.eclipse.nebula.widgets.nattable.datachange

Class UpdateDataChange

java.lang.Object

org.eclipse.nebula.widgets.nattable.datachange.UpdateDataChange

All Implemented Interfaces:

DataChange

Direct Known Subclasses:

PersistenceUpdateDataChange, TemporaryUpdateDataChange

public abstract class UpdateDataChange
extends Object
implements DataChange

DataChange implementation that tracks data updates. Contains an UpdateDataCommand that is created as result of a DataUpdateEvent and can be used to revert the data update.

Since:

1.6

Constructor Summary

Constructors

Constructor	Description
UpdateDataChange(Object key, Object value, CellKeyHandler<?> keyHandler)	Create an UpdateDataChange that is able to revert the performed data update.

Method Summary

Modifier and Type	Method	Description
Object	getKey()
protected UpdateDataCommand	getUpdateDataCommand(DataChangeLayer layer)
Object	getValue()
void	updateKey(Object key)	Update the locally stored key.

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.eclipse.nebula.widgets.nattable.datachange.DataChange

discard, save

Constructor Details

UpdateDataChange

public UpdateDataChange(Object key,
 Object value,
 CellKeyHandler<?> keyHandler)

Create an UpdateDataChange that is able to revert the performed data update.

Parameters:

key - The key under which the cell can be found that should be updated.

value - The value that should be set on save or discard.

keyHandler - The CellKeyHandler used to get indexes out of the key.

Method Details

getKey

public Object getKey()

Specified by:

getKey in interface DataChange

Returns:

The key used to identify the change in the backing data.

updateKey

public void updateKey(Object key)

Description copied from interface: DataChange

Update the locally stored key. Used in case the key changed because of structural changes.

Specified by:

updateKey in interface DataChange

Parameters:

key - The updated key.

getValue

public Object getValue()

Returns:

The value that should be set on save or discard.

getUpdateDataCommand

protected UpdateDataCommand getUpdateDataCommand(DataChangeLayer layer)