Class ReusableTupleQueryResult
java.lang.Object
org.eclipse.rdf4j.spring.resultcache.ReusableTupleQueryResult
- All Implemented Interfaces:
AutoCloseable
,Iterable<BindingSet>
,CloseableIteration<BindingSet,
,QueryEvaluationException> Iteration<BindingSet,
,QueryEvaluationException> QueryResult<BindingSet>
,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
-
Method Summary
Modifier and TypeMethodDescriptionboolean
canReuse()
void
close()
Closes this iteration, freeing any resources that it is holding.void
forEach
(Consumer<? super BindingSet> action) Gets the names of the bindings, in order of projection.boolean
hasNext()
Returnstrue
if the query result has more elements.iterator()
next()
Returns the next element in the query result.boolean
queryBindingsAreIdentical
(BindingSet candidate) void
void
remove()
Removes from the underlying collection the last element returned by the iteration (optional operation).stream()
Convert the result elements to a JavaStream
.
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Constructor Details
-
ReusableTupleQueryResult
-
-
Method Details
-
queryBindingsAreIdentical
-
canReuse
public boolean canReuse() -
recreateTupleQueryResult
-
recordThrowable
- Specified by:
recordThrowable
in interfaceThrowableRecorder
-
getBindingNames
Description copied from interface:TupleQueryResult
Gets the names of the bindings, in order of projection.- Specified by:
getBindingNames
in interfaceTupleQueryResult
- Returns:
- The binding names, in order of projection.
- Throws:
QueryEvaluationException
-
iterator
- Specified by:
iterator
in interfaceIterable<BindingSet>
- Specified by:
iterator
in interfaceQueryResult<BindingSet>
-
close
Description copied from interface:CloseableIteration
Closes this iteration, freeing any resources that it is holding. If the iteration has already been closed then invoking this method has no effect.- Specified by:
close
in interfaceAutoCloseable
- Specified by:
close
in interfaceCloseableIteration<BindingSet,
QueryEvaluationException> - Throws:
QueryEvaluationException
-
hasNext
Description copied from interface:QueryResult
Returnstrue
if the query result has more elements. (In other words, returnstrue
ifQueryResult.next()
would return an element rather than throwing aNoSuchElementException
.)- Specified by:
hasNext
in interfaceIteration<BindingSet,
QueryEvaluationException> - Specified by:
hasNext
in interfaceQueryResult<BindingSet>
- Returns:
true
if the iteration has more elements.- Throws:
QueryEvaluationException
- if an error occurs while executing the query.
-
next
Description copied from interface:QueryResult
Returns the next element in the query result.- Specified by:
next
in interfaceIteration<BindingSet,
QueryEvaluationException> - Specified by:
next
in interfaceQueryResult<BindingSet>
- Returns:
- the next element in the query result.
- Throws:
QueryEvaluationException
- if an error occurs while executing the query.
-
remove
Description copied from interface:Iteration
Removes from the underlying collection the last element returned by the iteration (optional operation). This method can be called only once per call to next.- Specified by:
remove
in interfaceIteration<BindingSet,
QueryEvaluationException> - Throws:
QueryEvaluationException
-
stream
Description copied from interface:QueryResult
Convert the result elements to a JavaStream
. Note that the consumer should take care to close the stream (by calling Stream#close() or using try-with-resource) if it is not fully consumed.- Specified by:
stream
in interfaceCloseableIteration<BindingSet,
QueryEvaluationException> - Specified by:
stream
in interfaceIteration<BindingSet,
QueryEvaluationException> - Specified by:
stream
in interfaceQueryResult<BindingSet>
- Returns:
- stream a
Stream
of query result elements.
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forEach
- Specified by:
forEach
in interfaceIterable<BindingSet>
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spliterator
- Specified by:
spliterator
in interfaceIterable<BindingSet>
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