Class IteratingGraphQueryResult

java.lang.Object

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

org.eclipse.rdf4j.common.iteration.IterationWrapper<Statement>

org.eclipse.rdf4j.query.impl.IteratingGraphQueryResult

All Implemented Interfaces:

AutoCloseable, Iterable<Statement>, Iterator<Statement>, CloseableIteration<Statement>, GraphQueryResult, QueryResult<Statement>

public class IteratingGraphQueryResult
extends IterationWrapper<Statement>
implements GraphQueryResult

An iterating implementation of the GraphQueryResult interface.

Author:

Arjohn Kampman, Jeen Broekstra

Field Summary

Fields inherited from class IterationWrapper

wrappedIter

Modifier and Type	Field	Description
protected final CloseableIteration<? extends Statement>	wrappedIter	Deprecated. This will be changed to private, possibly with an accessor in future.

Fields inherited from interface CloseableIteration

EMPTY_STATEMENT_ITERATION

Modifier and Type	Field	Description
static final EmptyIteration<Statement>	EMPTY_STATEMENT_ITERATION

Constructor Summary

Constructors

Constructor	Description
IteratingGraphQueryResult(Map<String,String> namespaces, Iterable<? extends Statement> statements)
IteratingGraphQueryResult(Map<String,String> namespaces, Iterator<? extends Statement> statementIter)
IteratingGraphQueryResult(Map<String,String> namespaces, CloseableIteration<? extends Statement> statementIter)

Method Summary

Modifier and Type	Method	Description
Map<String,String>	getNamespaces()	Retrieves relevant namespaces from the query result.

Methods inherited from class IterationWrapper

handleClose, hasNext, next, remove

Modifier and Type	Method	Description
protected void	handleClose()	Deprecated. Closes this Iteration and also closes the wrapped Iteration if it is a CloseableIteration.
boolean	hasNext()	Deprecated. Checks whether the wrapped Iteration contains more elements, closing this Iteration when this is not the case.
Statement	next()	Deprecated. Returns the next element from the wrapped Iteration.
void	remove()	Deprecated. Removes the last element that has been returned from the wrapped Iteration.

Methods inherited from class AbstractCloseableIteration

close, isClosed

Modifier and Type	Method	Description
final void	close()	Calls AbstractCloseableIteration.handleClose() upon first call and makes sure the resource closures are only executed once.
final boolean	isClosed()	Checks whether this CloseableIteration has been closed.

Methods inherited from class Object

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

Methods inherited from interface Iterable

forEach, spliterator

Methods inherited from interface Iterator

forEachRemaining

Methods inherited from interface QueryResult

hasNext, iterator, next, stream

Modifier and Type	Method	Description
boolean	hasNext()	Returns true if the query result has more elements.
default Iterator<Statement>	iterator()
Statement	next()	Returns the next element in the query result.
default Stream<Statement>	stream()	Convert the result elements to a Java Stream.

Constructor Details

IteratingGraphQueryResult

public IteratingGraphQueryResult(Map<String,String> namespaces,
 Iterable<? extends Statement> statements)

IteratingGraphQueryResult

public IteratingGraphQueryResult(Map<String,String> namespaces,
 Iterator<? extends Statement> statementIter)

IteratingGraphQueryResult

public IteratingGraphQueryResult(Map<String,String> namespaces,
 CloseableIteration<? extends Statement> statementIter)

Method Details

getNamespaces

public Map<String,String> getNamespaces()

Description copied from interface: GraphQueryResult

Retrieves relevant namespaces from the query result.
The contents of the Map may be modified after it is returned, as the initial return may be performed when the first RDF Statement is encountered.

Specified by:

getNamespaces in interface GraphQueryResult

Returns:

a Map<String, String> object containing (prefix, namespace) pairs.