Class RepositoryFederatedService.FallbackServiceIteration

java.lang.Object

org.eclipse.rdf4j.common.iteration.AbstractCloseableIteration<BindingSet, QueryEvaluationException>

org.eclipse.rdf4j.common.iteration.LookAheadIteration<BindingSet, QueryEvaluationException>

org.eclipse.rdf4j.repository.sparql.federation.JoinExecutorBase<BindingSet>

org.eclipse.rdf4j.repository.sparql.federation.RepositoryFederatedService.FallbackServiceIteration

All Implemented Interfaces:

AutoCloseable, CloseableIteration<BindingSet, QueryEvaluationException>, Iteration<BindingSet, QueryEvaluationException>

Enclosing class:

RepositoryFederatedService

private class RepositoryFederatedService.FallbackServiceIteration
extends JoinExecutorBase<BindingSet>

Helper iteration to evaluate a block of BindingSets using the simple RepositoryFederatedService.select(Service, Set, BindingSet, String) routine.

Field Summary

Fields

Modifier and Type	Field	Description
private final List<BindingSet>	allBindings
private final String	baseUri
private final Service	service

Fields inherited from class JoinExecutorBase

bindings, closed, finished, leftIter, NEXT_JOIN_ID, rightArg, rightIter, rightQueue

Constructor Summary

Constructors

Constructor	Description
FallbackServiceIteration(Service service, List<BindingSet> allBindings, String baseUri)

Method Summary

Modifier and Type	Method	Description
protected void	handleBindings()	Implementations must implement this method to handle bindings.

Methods inherited from class JoinExecutorBase

addResult, done, getNextElement, handleClose, isFinished, run, toss

Methods inherited from class LookAheadIteration

hasNext, next, remove

Methods inherited from class AbstractCloseableIteration

close, isClosed

Methods inherited from class Object

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

Methods inherited from interface CloseableIteration

stream

Field Details

service

private final Service service

allBindings

private final List<BindingSet> allBindings

baseUri

private final String baseUri

Constructor Details

FallbackServiceIteration

public FallbackServiceIteration(Service service,
 List<BindingSet> allBindings,
 String baseUri)

Method Details

handleBindings

protected void handleBindings()
                       throws Exception

Description copied from class: JoinExecutorBase

Implementations must implement this method to handle bindings. Use the following as a template while (!closed invalid input: '&'invalid input: '&' leftIter.hasNext()) { // your code } and add results to rightQueue. Note that addResult() is implemented synchronized and thus thread safe. In case you can guarantee sequential access, it is also possible to directly access rightQueue

Specified by:

handleBindings in class JoinExecutorBase<BindingSet>

Throws:

Exception