ParallelTaskBase (Eclipse RDF4J 4.3.2)

java.lang.Object
- org.eclipse.rdf4j.federated.evaluation.concurrent.ParallelTaskBase<T>

All Implemented Interfaces:

ParallelTask<T>

Direct Known Subclasses:

ParallelBoundJoinTask, ParallelCheckJoinTask, 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

All Methods Instance Methods Abstract Methods Concrete Methods
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,QueryEvaluationException>`	`performTask()`
`protected abstract CloseableIteration<T,QueryEvaluationException>`	`performTaskInternal()`
`void`	`setScheduledFuture(Future<?> future)`
`String`	`toString()`

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.eclipse.rdf4j.federated.evaluation.concurrent.ParallelTask
getControl, getQueryInfo

- Field Detail
  - scheduledFuture
```
protected Future<?> scheduledFuture
```
- Constructor Detail
  - ParallelTaskBase
```
public ParallelTaskBase()
```
- Method Detail
  - 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,QueryEvaluationException> performTask()
                                                                 throws Exception
```
    Specified by:
    
    performTask in interface ParallelTask<T>
    
    Throws:
    
    Exception
  - performTaskInternal
```
protected abstract CloseableIteration<T,QueryEvaluationException> 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>