Package org.eclipse.emf.compare.rcp.ui.internal.contentmergeviewer

Class SingleValuedAttributeModelUpdateStrategy

java.lang.Object

org.eclipse.emf.compare.rcp.ui.internal.contentmergeviewer.SingleValuedAttributeModelUpdateStrategy

All Implemented Interfaces:

IModelUpdateStrategy

public class SingleValuedAttributeModelUpdateStrategy
extends Object
implements IModelUpdateStrategy

A IModelUpdateStrategy for single-valued EAttributes.

This strategy is tolerant in the sense that it will not throw exceptions if the input is not a supported AttributeChange. In this case, this strategy will return false on canUpdate(Diff, MergeViewerSide) and return a command on getModelUpdateCommand(Diff, Object, MergeViewerSide) that specifies false on Command.canExecute(). Therefore, it can be used as default strategy.

Constructor Summary

Constructors

Constructor	Description
SingleValuedAttributeModelUpdateStrategy()

Method Summary

Modifier and Type	Method	Description
boolean	canUpdate(Diff diff, IMergeViewer.MergeViewerSide side)	Specifies whether the value in the model can to be updated on the given side.
Command	getModelUpdateCommand(Diff diff, Object newValue, IMergeViewer.MergeViewerSide side)	Returns a command for updating the underlying model with the given newValue on the given side.

Methods inherited from class java.lang.Object

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

Constructor Details

SingleValuedAttributeModelUpdateStrategy

public SingleValuedAttributeModelUpdateStrategy()

Method Details

canUpdate

public boolean canUpdate(Diff diff,
 IMergeViewer.MergeViewerSide side)

Specifies whether the value in the model can to be updated on the given side.

Specified by:

canUpdate in interface IModelUpdateStrategy

Parameters:

diff - The diff acting as context of the potential model update.

side - The side to check.

Returns:

true if the value can be updated, false otherwise.

See Also:

• IModelUpdateStrategy.canUpdate(Diff, MergeViewerSide)

getModelUpdateCommand

public Command getModelUpdateCommand(Diff diff,
 Object newValue,
 IMergeViewer.MergeViewerSide side)

Returns a command for updating the underlying model with the given newValue on the given side.

Specified by:

getModelUpdateCommand in interface IModelUpdateStrategy

Parameters:

diff - The diff acting as context of the model update.

newValue - The new value to be set.

side - The side on which the update is to be performed.

Returns:

A command to perform the model update.

See Also:

• IModelUpdateStrategy.getModelUpdateCommand(Diff, Object, MergeViewerSide)