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org.eclipse.emf.mapping.command
Class InitializeCopyOverrideCommand

java.lang.Object
  org.eclipse.emf.common.command.AbstractCommand
      org.eclipse.emf.mapping.command.InitializeCopyOverrideCommand

All Implemented Interfaces:

Command

Direct Known Subclasses:

Ecore2EcoreEditor.Ecore2EcoreInitializeCopyOverrideCommand

public class InitializeCopyOverrideCommand

extends AbstractCommand

This command overrides the InitializeCopyCommand for cross-domain copies. This implementation is a no-op unless the objects are suitable ECore classes, in which case it copies the name and possibly the eType. Application specific subclasses should override execute() to complete the initialization, if necessary.

Nested Class Summary

Nested classes inherited from class org.eclipse.emf.common.command.AbstractCommand

AbstractCommand.NonDirtying

Field Summary

protected InitializeCopyCommand	initializeCommand This is command we're overriding
protected MappingDomain	mappingDomain This keeps track of the mapping domain in which the command operates.

Fields inherited from class org.eclipse.emf.common.command.AbstractCommand

description, isExecutable, isPrepared, label

Constructor Summary

InitializeCopyOverrideCommand(MappingDomain domain, InitializeCopyCommand initializeCommand)
This creates a command instance that initializes a copied object

Method Summary

void	execute() Performs the command activity required for the effect.
Collection	getAffectedObjects() Returns an empty list.
Collection	getResult() Returns an empty list.
protected boolean	prepare() Called at most once in AbstractCommand.canExecute() to give the command an opportunity to ready itself for execution.
void	redo() Performs the command activity required to redo the effect after undoing the effect.
String	toString() This gives an abbreviated name using this object's own class' name, without package qualification, followed by a space separated list of field:value pairs.
void	undo() Throws a runtime exception.

Methods inherited from class org.eclipse.emf.common.command.AbstractCommand

canExecute, canUndo, chain, dispose, getDescription, getLabel, setDescription, setLabel

Methods inherited from class java.lang.Object

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

Field Detail

mappingDomain

protected MappingDomain mappingDomain

This keeps track of the mapping domain in which the command operates.

initializeCommand

protected InitializeCopyCommand initializeCommand

This is command we're overriding

Constructor Detail

InitializeCopyOverrideCommand

public InitializeCopyOverrideCommand(MappingDomain domain,
                                     InitializeCopyCommand initializeCommand)

This creates a command instance that initializes a copied object

Method Detail

prepare

protected boolean prepare()

Description copied from class: AbstractCommand

Called at most once in AbstractCommand.canExecute() to give the command an opportunity to ready itself for execution. The returned value is stored in AbstractCommand.canExecute(). In other words, you can override this method to initialize and to yield a cached value for the all subsequent calls to canExecute.

Overrides:

prepare in class AbstractCommand

Returns:

whether the command is executable.

execute

public void execute()

Description copied from interface: Command

Performs the command activity required for the effect. The effect of calling execute when canExecute returns false, or when canExecute hasn't been called, is undefined.

undo

public void undo()

Description copied from class: AbstractCommand

Throws a runtime exception.

Specified by:

undo in interface Command

Overrides:

undo in class AbstractCommand

redo

public void redo()

Description copied from interface: Command

Performs the command activity required to redo the effect after undoing the effect. The effect, if any, of calling redo before undo is called is undefined. Note that if you implement redo to call execute then any derived class will be restricted by that decision also.

getResult

public Collection getResult()

Description copied from class: AbstractCommand

Returns an empty list.

Specified by:

getResult in interface Command

Overrides:

getResult in class AbstractCommand

Returns:

an empty list.

getAffectedObjects

public Collection getAffectedObjects()

Description copied from class: AbstractCommand

Returns an empty list.

Specified by:

getAffectedObjects in interface Command

Overrides:

getAffectedObjects in class AbstractCommand

Returns:

an empty list.

toString

public String toString()

This gives an abbreviated name using this object's own class' name, without package qualification, followed by a space separated list of field:value pairs.

Overrides:

toString in class AbstractCommand

Returns:

string representation.