Package org.eclipse.rdf4j.spring.resultcache

Class ReusableGraphQueryResult

java.lang.Object

org.eclipse.rdf4j.spring.resultcache.ReusableGraphQueryResult

All Implemented Interfaces:

AutoCloseable, Iterable<org.eclipse.rdf4j.model.Statement>, org.eclipse.rdf4j.common.iteration.CloseableIteration<org.eclipse.rdf4j.model.Statement,org.eclipse.rdf4j.query.QueryEvaluationException>, org.eclipse.rdf4j.common.iteration.Iteration<org.eclipse.rdf4j.model.Statement,org.eclipse.rdf4j.query.QueryEvaluationException>, org.eclipse.rdf4j.query.GraphQueryResult, org.eclipse.rdf4j.query.QueryResult<org.eclipse.rdf4j.model.Statement>, ThrowableRecorder

public class ReusableGraphQueryResult
extends Object
implements org.eclipse.rdf4j.query.GraphQueryResult, ThrowableRecorder

Wrapper for a TupleQueryResult, allowing the result to be replayed. Not thread-safe. 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();
 GraphQueryResult cached = reuseable.recreateGraphQueryResult();
 while (cached.hasNext()) {
        cached.next();
 }
 cached.close();

 

Since:

4.0.0

Author:

Florian Kleedorfer

Constructor Summary

Constructors

Constructor	Description
ReusableGraphQueryResult(org.eclipse.rdf4j.query.GraphQueryResult 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.model.Statement> action)
Map<String,String>	getNamespaces()
boolean	hasNext()
Iterator<org.eclipse.rdf4j.model.Statement>	iterator()
org.eclipse.rdf4j.model.Statement	next()
boolean	queryBindingsAreIdentical(org.eclipse.rdf4j.query.BindingSet candidate)
void	recordThrowable(Throwable t)
CachedGraphQueryResult	recreateGraphQueryResult()
void	remove()
Spliterator<org.eclipse.rdf4j.model.Statement>	spliterator()
Stream<org.eclipse.rdf4j.model.Statement>	stream()

Methods inherited from class java.lang.Object

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

Constructor Detail

ReusableGraphQueryResult

public ReusableGraphQueryResult(org.eclipse.rdf4j.query.GraphQueryResult result,
                                org.eclipse.rdf4j.query.BindingSet queryBindings)

Method Detail

queryBindingsAreIdentical

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

canReuse

public boolean canReuse()

recreateGraphQueryResult

public CachedGraphQueryResult recreateGraphQueryResult()

recordThrowable

public void recordThrowable(Throwable t)

Specified by:

recordThrowable in interface ThrowableRecorder

getNamespaces

public Map<String,String> getNamespaces()
                                       throws org.eclipse.rdf4j.query.QueryEvaluationException

Specified by:

getNamespaces in interface org.eclipse.rdf4j.query.GraphQueryResult

Throws:

org.eclipse.rdf4j.query.QueryEvaluationException

iterator

public Iterator<org.eclipse.rdf4j.model.Statement> iterator()

Specified by:

iterator in interface Iterable<org.eclipse.rdf4j.model.Statement>

Specified by:

iterator in interface org.eclipse.rdf4j.query.QueryResult<org.eclipse.rdf4j.model.Statement>

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.model.Statement,org.eclipse.rdf4j.query.QueryEvaluationException>

Throws:

org.eclipse.rdf4j.query.QueryEvaluationException

hasNext

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

Specified by:

hasNext in interface org.eclipse.rdf4j.common.iteration.Iteration<org.eclipse.rdf4j.model.Statement,org.eclipse.rdf4j.query.QueryEvaluationException>

Specified by:

hasNext in interface org.eclipse.rdf4j.query.QueryResult<org.eclipse.rdf4j.model.Statement>

Throws:

org.eclipse.rdf4j.query.QueryEvaluationException

next

public org.eclipse.rdf4j.model.Statement next()
                                       throws org.eclipse.rdf4j.query.QueryEvaluationException

Specified by:

next in interface org.eclipse.rdf4j.common.iteration.Iteration<org.eclipse.rdf4j.model.Statement,org.eclipse.rdf4j.query.QueryEvaluationException>

Specified by:

next in interface org.eclipse.rdf4j.query.QueryResult<org.eclipse.rdf4j.model.Statement>

Throws:

org.eclipse.rdf4j.query.QueryEvaluationException

remove

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

Specified by:

remove in interface org.eclipse.rdf4j.common.iteration.Iteration<org.eclipse.rdf4j.model.Statement,org.eclipse.rdf4j.query.QueryEvaluationException>

Throws:

org.eclipse.rdf4j.query.QueryEvaluationException

stream

public Stream<org.eclipse.rdf4j.model.Statement> stream()

Specified by:

stream in interface org.eclipse.rdf4j.common.iteration.CloseableIteration<org.eclipse.rdf4j.model.Statement,org.eclipse.rdf4j.query.QueryEvaluationException>

Specified by:

stream in interface org.eclipse.rdf4j.common.iteration.Iteration<org.eclipse.rdf4j.model.Statement,org.eclipse.rdf4j.query.QueryEvaluationException>

Specified by:

stream in interface org.eclipse.rdf4j.query.QueryResult<org.eclipse.rdf4j.model.Statement>

forEach

public void forEach(Consumer<? super org.eclipse.rdf4j.model.Statement> action)

Specified by:

forEach in interface Iterable<org.eclipse.rdf4j.model.Statement>

spliterator

public Spliterator<org.eclipse.rdf4j.model.Statement> spliterator()

Specified by:

spliterator in interface Iterable<org.eclipse.rdf4j.model.Statement>