org.eclipse.jpt.common.core.utility.command
Class JobCommand.Null

java.lang.Object
  org.eclipse.jpt.common.core.utility.command.JobCommand.Null

All Implemented Interfaces:

Serializable, InterruptibleJobCommand, JobCommand

Enclosing interface:

JobCommand

public static final class JobCommand.Null
extends Object
implements JobCommand, Serializable

Singleton implementation of the job command interface that will do nothing when executed.

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from interface org.eclipse.jpt.common.core.utility.command.JobCommand

JobCommand.Disabled, JobCommand.Null

Nested classes/interfaces inherited from interface org.eclipse.jpt.common.core.utility.command.InterruptibleJobCommand

InterruptibleJobCommand.Interrupted

Field Summary

static JobCommand

INSTANCE

Method Summary

IStatus	execute(IProgressMonitor monitor) Execute the command.
static JobCommand	instance()
String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

INSTANCE

public static final JobCommand INSTANCE

Method Detail

instance

public static JobCommand instance()

execute

public IStatus execute(IProgressMonitor monitor)

Description copied from interface: JobCommand

Execute the command. The semantics of the command is determined by the contract between the client and server. The command should check, as appropriate, whether the specified progress monitor is "canceled"; if it is, the command should return a result status of severity IStatus.CANCEL. The singleton cancel status Status.CANCEL_STATUS can be used for this purpose.

Nested methods can also check the progress monitor and, if it is "canceled", throw an OperationCanceledException.

Specified by:

execute in interface InterruptibleJobCommand

Specified by:

execute in interface JobCommand

See Also:

IProgressMonitor.isCanceled(), Job.run(IProgressMonitor monitor)

toString

public String toString()

Overrides:

toString in class Object