Package org.eclipse.rdf4j.sail.memory.model

Class MemTripleIterator<X extends Exception>

java.lang.Object

org.eclipse.rdf4j.common.iteration.AbstractCloseableIteration<MemTriple>

org.eclipse.rdf4j.common.iteration.LookAheadIteration<MemTriple>

org.eclipse.rdf4j.sail.memory.model.MemTripleIterator<X>

All Implemented Interfaces:

AutoCloseable, Iterator<MemTriple>, CloseableIteration<MemTriple>

public class MemTripleIterator<X extends Exception>
extends LookAheadIteration<MemTriple>

An Iteration that can iterate over a list of Triple objects.

Author:

Jeen Broekstra

Constructor Summary

Constructors

Constructor	Description
MemTripleIterator(MemStatementList statementList, MemResource subject, MemIRI predicate, MemValue object, int snapshot)	Creates a new MemTripleIterator that will iterate over the triples contained in the supplied MemStatementList searching for triples that occur as either subject or object in those statements, and which match the specified pattern of subject, predicate, object.

Method Summary

Modifier and Type	Method	Description
protected MemTriple	getNextElement()	Searches through statementList, starting from index _nextStatementIdx + 1, for triples that match the constraints that have been set for this iterator.
protected void	handleClose()	Called by AbstractCloseableIteration.close() when it is called for the first time.

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

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

Methods inherited from interface org.eclipse.rdf4j.common.iteration.CloseableIteration

stream

Methods inherited from interface java.util.Iterator

forEachRemaining

Constructor Details

MemTripleIterator

public MemTripleIterator(MemStatementList statementList,
 MemResource subject,
 MemIRI predicate,
 MemValue object,
 int snapshot)
                  throws InterruptedException

Creates a new MemTripleIterator that will iterate over the triples contained in the supplied MemStatementList searching for triples that occur as either subject or object in those statements, and which match the specified pattern of subject, predicate, object.

Parameters:

statementList - the statements over which to iterate.

subject - subject of pattern.

predicate - predicate of pattern.

object - object of pattern.

Throws:

InterruptedException

Method Details

getNextElement

protected MemTriple getNextElement()

Searches through statementList, starting from index _nextStatementIdx + 1, for triples that match the constraints that have been set for this iterator.

Specified by:

getNextElement in class LookAheadIteration<MemTriple>

Returns:

The next element, or null if no more elements are available.

handleClose

protected void handleClose()

Description copied from class: AbstractCloseableIteration

Called by AbstractCloseableIteration.close() when it is called for the first time. This method is only called once on each iteration. By default, this method does nothing.

Specified by:

handleClose in class AbstractCloseableIteration<MemTriple>