Package org.eclipse.rdf4j.spring.resultcache

Class ReusableTupleQueryResult

java.lang.Object

org.eclipse.rdf4j.spring.resultcache.ReusableTupleQueryResult

All Implemented Interfaces:

AutoCloseable, Iterable<org.eclipse.rdf4j.query.BindingSet>, Iterator<org.eclipse.rdf4j.query.BindingSet>, org.eclipse.rdf4j.common.iteration.CloseableIteration<org.eclipse.rdf4j.query.BindingSet>, org.eclipse.rdf4j.query.QueryResult<org.eclipse.rdf4j.query.BindingSet>, org.eclipse.rdf4j.query.TupleQueryResult, ThrowableRecorder

public class ReusableTupleQueryResult
extends Object
implements org.eclipse.rdf4j.query.TupleQueryResult, ThrowableRecorder

Wrapper for a TupleQueryResult, allowing the result to be replayed. The wrapper copies the result data, consuming the original result fully on close().

Example:

 TupleQueryResult result = tupleQuery.execute();
 ReuseableTupleQueryResult reusable = new ReuseableTupleQueryResult(result);
 while (reusable.hasNext()) {
        reuseable.next();
 }
 reuseable.close();
 TupleQueryResult cached = reuseable.recreateTupleQueryResult();
 while (cached.hasNext()) {
        cached.next();
 }
 cached.close();

 

Since:

4.0.0

Author:

Florian Kleedorfer

Constructor Summary

Constructors

Constructor	Description
ReusableTupleQueryResult(org.eclipse.rdf4j.query.TupleQueryResult result, org.eclipse.rdf4j.query.BindingSet queryBindings)

Method Summary

Modifier and Type	Method	Description
boolean	canReuse()
void	close()
void	forEach(Consumer<? super org.eclipse.rdf4j.query.BindingSet> action)
List<String>	getBindingNames()
boolean	hasNext()
Iterator<org.eclipse.rdf4j.query.BindingSet>	iterator()
org.eclipse.rdf4j.query.BindingSet	next()
boolean	queryBindingsAreIdentical(org.eclipse.rdf4j.query.BindingSet candidate)
void	recordThrowable(Throwable t)
CachedTupleQueryResult	recreateTupleQueryResult()
void	remove()
Spliterator<org.eclipse.rdf4j.query.BindingSet>	spliterator()
Stream<org.eclipse.rdf4j.query.BindingSet>	stream()

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Iterator

forEachRemaining

Constructor Detail

ReusableTupleQueryResult

public ReusableTupleQueryResult(org.eclipse.rdf4j.query.TupleQueryResult result,
                                org.eclipse.rdf4j.query.BindingSet queryBindings)

Method Detail

queryBindingsAreIdentical

public boolean queryBindingsAreIdentical(org.eclipse.rdf4j.query.BindingSet candidate)

canReuse

public boolean canReuse()

recreateTupleQueryResult

public CachedTupleQueryResult recreateTupleQueryResult()

recordThrowable

public void recordThrowable(Throwable t)

Specified by:

recordThrowable in interface ThrowableRecorder

getBindingNames

public List<String> getBindingNames()
                             throws org.eclipse.rdf4j.query.QueryEvaluationException

Specified by:

getBindingNames in interface org.eclipse.rdf4j.query.TupleQueryResult

Throws:

org.eclipse.rdf4j.query.QueryEvaluationException

iterator

public Iterator<org.eclipse.rdf4j.query.BindingSet> iterator()

Specified by:

iterator in interface Iterable<org.eclipse.rdf4j.query.BindingSet>

Specified by:

iterator in interface org.eclipse.rdf4j.query.QueryResult<org.eclipse.rdf4j.query.BindingSet>

close

public void close()
           throws org.eclipse.rdf4j.query.QueryEvaluationException

Specified by:

close in interface AutoCloseable

Specified by:

close in interface org.eclipse.rdf4j.common.iteration.CloseableIteration<org.eclipse.rdf4j.query.BindingSet>

Throws:

org.eclipse.rdf4j.query.QueryEvaluationException

hasNext

public boolean hasNext()
                throws org.eclipse.rdf4j.query.QueryEvaluationException

Specified by:

hasNext in interface Iterator<org.eclipse.rdf4j.query.BindingSet>

Specified by:

hasNext in interface org.eclipse.rdf4j.query.QueryResult<org.eclipse.rdf4j.query.BindingSet>

Throws:

org.eclipse.rdf4j.query.QueryEvaluationException

next

public org.eclipse.rdf4j.query.BindingSet next()
                                        throws org.eclipse.rdf4j.query.QueryEvaluationException

Specified by:

next in interface Iterator<org.eclipse.rdf4j.query.BindingSet>

Specified by:

next in interface org.eclipse.rdf4j.query.QueryResult<org.eclipse.rdf4j.query.BindingSet>

Throws:

org.eclipse.rdf4j.query.QueryEvaluationException

remove

public void remove()
            throws org.eclipse.rdf4j.query.QueryEvaluationException

Specified by:

remove in interface Iterator<org.eclipse.rdf4j.query.BindingSet>

Throws:

org.eclipse.rdf4j.query.QueryEvaluationException

stream

public Stream<org.eclipse.rdf4j.query.BindingSet> stream()

Specified by:

stream in interface org.eclipse.rdf4j.common.iteration.CloseableIteration<org.eclipse.rdf4j.query.BindingSet>

Specified by:

stream in interface org.eclipse.rdf4j.query.QueryResult<org.eclipse.rdf4j.query.BindingSet>

forEach

public void forEach(Consumer<? super org.eclipse.rdf4j.query.BindingSet> action)

Specified by:

forEach in interface Iterable<org.eclipse.rdf4j.query.BindingSet>

spliterator

public Spliterator<org.eclipse.rdf4j.query.BindingSet> spliterator()

Specified by:

spliterator in interface Iterable<org.eclipse.rdf4j.query.BindingSet>