org.eclipse.rdf4j.query.algebra.evaluation.iterator

Class DescribeIteration

java.lang.Object

org.eclipse.rdf4j.common.iteration.AbstractCloseableIteration<E,X>

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

org.eclipse.rdf4j.query.algebra.evaluation.iterator.DescribeIteration

All Implemented Interfaces:

AutoCloseable, org.eclipse.rdf4j.common.iteration.CloseableIteration<org.eclipse.rdf4j.query.BindingSet,org.eclipse.rdf4j.query.QueryEvaluationException>, org.eclipse.rdf4j.common.iteration.Iteration<org.eclipse.rdf4j.query.BindingSet,org.eclipse.rdf4j.query.QueryEvaluationException>

public class DescribeIteration
extends org.eclipse.rdf4j.common.iteration.LookAheadIteration<org.eclipse.rdf4j.query.BindingSet,org.eclipse.rdf4j.query.QueryEvaluationException>

Iteration that implements a simplified version of Symmetric Concise Bounded Description (omitting reified statements).

Author:

Jeen Broekstra

See Also:

Concise Bounded Description - alternatives

Constructor Summary

Constructors

Constructor and Description
DescribeIteration(org.eclipse.rdf4j.common.iteration.Iteration<org.eclipse.rdf4j.query.BindingSet,org.eclipse.rdf4j.query.QueryEvaluationException> sourceIter, EvaluationStrategy strategy, Set<String> describeExprNames, org.eclipse.rdf4j.query.BindingSet parentBindings)

Method Summary

Modifier and Type	Method and Description
protected org.eclipse.rdf4j.query.BindingSet	getNextElement()

Methods inherited from class org.eclipse.rdf4j.common.iteration.LookAheadIteration

handleClose, hasNext, next, remove

Methods inherited from class org.eclipse.rdf4j.common.iteration.AbstractCloseableIteration

close, isClosed

Methods inherited from class java.lang.Object

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

Constructor Detail

DescribeIteration

public DescribeIteration(org.eclipse.rdf4j.common.iteration.Iteration<org.eclipse.rdf4j.query.BindingSet,org.eclipse.rdf4j.query.QueryEvaluationException> sourceIter,
                         EvaluationStrategy strategy,
                         Set<String> describeExprNames,
                         org.eclipse.rdf4j.query.BindingSet parentBindings)

Method Detail

getNextElement

protected org.eclipse.rdf4j.query.BindingSet getNextElement()
                                                     throws org.eclipse.rdf4j.query.QueryEvaluationException

Specified by:

getNextElement in class org.eclipse.rdf4j.common.iteration.LookAheadIteration<org.eclipse.rdf4j.query.BindingSet,org.eclipse.rdf4j.query.QueryEvaluationException>

Throws:

org.eclipse.rdf4j.query.QueryEvaluationException