Class SourceSelection.SourceSelectionExecutorWithLatch

java.lang.Object

org.eclipse.rdf4j.federated.optimizer.SourceSelection.SourceSelectionExecutorWithLatch

All Implemented Interfaces:

Runnable, ParallelExecutor<BindingSet>

Enclosing class:

SourceSelection

protected static class SourceSelection.SourceSelectionExecutorWithLatch
extends Object
implements ParallelExecutor<BindingSet>

Author:

Andreas Schwarte

Field Summary

Fields

Modifier and Type	Field	Description
protected List<Exception>	errors

Method Summary

Modifier and Type	Method	Description
void	addResult(CloseableIteration<BindingSet> res)	Handle the result appropriately, e.g. add it to the result iteration.
void	done()	Inform the controlling instance that some job is done from a different thread.
QueryInfo	getQueryInfo()	Return the query info of the associated query
boolean	isFinished()	Return true if this executor is finished or aborted
void	run()
static void	run(SourceSelection sourceSelection, List<SourceSelection.CheckTaskPair> tasks, SourceSelectionCache cache)	Execute the given list of tasks in parallel, and block the thread until all tasks are completed.
void	toss(Exception e)	Toss some exception to the controlling instance

Methods inherited from class Object

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

Field Details

errors

protected List<Exception> errors

Method Details

run

public static void run(SourceSelection sourceSelection,
 List<SourceSelection.CheckTaskPair> tasks,
 SourceSelectionCache cache)

Execute the given list of tasks in parallel, and block the thread until all tasks are completed. Synchronization is achieved by means of a latch. Results are added to the map of the source selection instance. Errors are reported as OptimizationException instances.

Parameters:

tasks -

run

public void run()

Specified by:

run in interface Runnable

addResult

public void addResult(CloseableIteration<BindingSet> res)

Description copied from interface: ParallelExecutor

Handle the result appropriately, e.g. add it to the result iteration. Take care for synchronization in a multithreaded environment

Specified by:

addResult in interface ParallelExecutor<BindingSet>

Parameters:

res -

toss

public void toss(Exception e)

Description copied from interface: ParallelExecutor

Toss some exception to the controlling instance

Specified by:

toss in interface ParallelExecutor<BindingSet>

Parameters:

e -

done

public void done()

Description copied from interface: ParallelExecutor

Inform the controlling instance that some job is done from a different thread. In most cases this is a no-op.

Specified by:

done in interface ParallelExecutor<BindingSet>

isFinished

public boolean isFinished()

Description copied from interface: ParallelExecutor

Return true if this executor is finished or aborted

Specified by:

isFinished in interface ParallelExecutor<BindingSet>

Returns:

whether the execution is finished

getQueryInfo

public QueryInfo getQueryInfo()

Description copied from interface: ParallelExecutor

Return the query info of the associated query

Specified by:

getQueryInfo in interface ParallelExecutor<BindingSet>

Returns:

the query info