Package org.aksw.jenax.arq.service.vfs

Class ServiceExecutorFactoryRegistratorVfs.ChainingServiceExecutorConcurrentSimple

java.lang.Object

org.aksw.jenax.arq.service.vfs.ServiceExecutorFactoryRegistratorVfs.ChainingServiceExecutorConcurrentSimple

All Implemented Interfaces:

org.apache.jena.sparql.service.bulk.ChainingServiceExecutorBulk

Enclosing class:

ServiceExecutorFactoryRegistratorVfs

public static class ServiceExecutorFactoryRegistratorVfs.ChainingServiceExecutorConcurrentSimple
extends Object
implements org.apache.jena.sparql.service.bulk.ChainingServiceExecutorBulk

Read ahead a certain amount of items from the lhs and concurrently start fetching the corresponding data for the rhs. Incorrect use may waste resources by reading ahead too many items that will not be needed.

Field Summary

Fields

Modifier and Type	Field	Description
protected static final org.apache.jena.graph.Node	CONCURRENT
protected ExecutorService	executorService
protected int	maxConcurrentTasks

Constructor Summary

Constructors

Constructor	Description
ChainingServiceExecutorConcurrentSimple(ExecutorService executorService, int maxConcurrentTasks)

Method Summary

Modifier and Type	Method	Description
org.apache.jena.sparql.engine.QueryIterator	createExecution(org.apache.jena.sparql.algebra.op.OpService opService, org.apache.jena.sparql.engine.QueryIterator input, org.apache.jena.sparql.engine.ExecutionContext execCxt, org.apache.jena.sparql.service.bulk.ServiceExecutorBulk chain)

Methods inherited from class java.lang.Object

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

Field Details

CONCURRENT

protected static final org.apache.jena.graph.Node CONCURRENT

executorService

protected ExecutorService executorService

maxConcurrentTasks

protected int maxConcurrentTasks

Constructor Details

ChainingServiceExecutorConcurrentSimple

public ChainingServiceExecutorConcurrentSimple(ExecutorService executorService,
 int maxConcurrentTasks)

Method Details

createExecution

public org.apache.jena.sparql.engine.QueryIterator createExecution(org.apache.jena.sparql.algebra.op.OpService opService,
 org.apache.jena.sparql.engine.QueryIterator input,
 org.apache.jena.sparql.engine.ExecutionContext execCxt,
 org.apache.jena.sparql.service.bulk.ServiceExecutorBulk chain)

Specified by:

createExecution in interface org.apache.jena.sparql.service.bulk.ChainingServiceExecutorBulk