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org.eclipse.emf.mapping.command
Class CreateCopyOverrideCommand

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

All Implemented Interfaces:

ChildrenToCopyProvider, Command

public class CreateCopyOverrideCommand

extends AbstractCommand

implements ChildrenToCopyProvider

This command overrides the CreateCopyCommand for cross-domain copies.

Nested Class Summary

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

AbstractCommand.NonDirtying

Field Summary

protected EObject	copy This is the copy.
protected CopyCommand.Helper	copyHelper This is a map of objects to their copies
protected MappingDomain	mappingDomain This keeps track of the mapping domain in which the command operates.
protected EObject	owner This is the object being copied.

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

description, isExecutable, isPrepared, label

Constructor Summary

CreateCopyOverrideCommand(MappingDomain domain, CreateCopyCommand createCommand)
This creates a command instance that creates a copy of owner.

Method Summary

void	execute() Performs the command activity required for the effect.
Collection	getChildrenToCopy()
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, getAffectedObjects, 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.

owner

protected EObject owner

This is the object being copied.

copy

protected EObject copy

This is the copy.

copyHelper

protected CopyCommand.Helper copyHelper

This is a map of objects to their copies

Constructor Detail

CreateCopyOverrideCommand

public CreateCopyOverrideCommand(MappingDomain domain,
                                 CreateCopyCommand createCommand)

This creates a command instance that creates a copy of owner.

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.

Specified by:

execute in interface Command

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.

Specified by:

redo in interface Command

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.

getChildrenToCopy

public Collection getChildrenToCopy()

Specified by:

getChildrenToCopy in interface ChildrenToCopyProvider

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.