Class ParallelTaskBase<T>

java.lang.Object

org.eclipse.rdf4j.federated.evaluation.concurrent.ParallelTaskBase<T>

All Implemented Interfaces:

ParallelTask<T>

Direct Known Subclasses:

ParallelBindLeftJoinTask, ParallelBoundJoinTask, ParallelCheckJoinTask, ParallelEmptyBindLeftJoinTask, ParallelGetStatementsTask, ParallelJoinTask, ParallelLeftJoinTask, ParallelPreparedAlgebraUnionTask, ParallelPreparedUnionTask, ParallelServiceJoinTask, ParallelUnionOperatorTask, ParallelUnionTask, SourceSelection.ParallelCheckTask

public abstract class ParallelTaskBase<T>
extends Object
implements ParallelTask<T>

Field Summary

Fields

Modifier and Type	Field	Description
protected Future<?>	scheduledFuture

Constructor Summary

Constructors

Constructor	Description
ParallelTaskBase()

Method Summary

Modifier and Type	Method	Description
void	cancel()	Optional implementation to cancel this task on a best effort basis
void	close()	Optional implementation to close this task on a best effort basis.
CloseableIteration<T>	performTask()
protected abstract CloseableIteration<T>	performTaskInternal()
void	setScheduledFuture(Future<?> future)
String	toString()

Methods inherited from class Object

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

Methods inherited from interface ParallelTask

getControl, getQueryInfo

Modifier and Type	Method	Description
ParallelExecutor<T>	getControl()	return the controlling instance, e.g. in most cases the instance of a thread.
default QueryInfo	getQueryInfo()

Field Details

scheduledFuture

protected Future<?> scheduledFuture

Constructor Details

ParallelTaskBase

public ParallelTaskBase()

Method Details

cancel

public void cancel()

Description copied from interface: ParallelTask

Optional implementation to cancel this task on a best effort basis

Specified by:

cancel in interface ParallelTask<T>

performTask

public CloseableIteration<T> performTask()
                                  throws Exception

Specified by:

performTask in interface ParallelTask<T>

Throws:

Exception

performTaskInternal

protected abstract CloseableIteration<T> performTaskInternal()
                                                      throws Exception

Throws:

Exception

setScheduledFuture

public void setScheduledFuture(Future<?> future)

toString

public String toString()

Overrides:

toString in class Object

close

public void close()

Description copied from interface: ParallelTask

Optional implementation to close this task on a best effort basis.

Specified by:

close in interface ParallelTask<T>