Package org.eclipse.rdf4j.query
Class QueryResults.TupleQueryResultFilter
- java.lang.Object
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- org.eclipse.rdf4j.common.iteration.AbstractCloseableIteration<BindingSet,QueryEvaluationException>
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- org.eclipse.rdf4j.query.QueryResults.TupleQueryResultFilter
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- All Implemented Interfaces:
java.lang.AutoCloseable
,java.lang.Iterable<BindingSet>
,CloseableIteration<BindingSet,QueryEvaluationException>
,Iteration<BindingSet,QueryEvaluationException>
,QueryResult<BindingSet>
,TupleQueryResult
- Enclosing class:
- QueryResults
private static class QueryResults.TupleQueryResultFilter extends AbstractCloseableIteration<BindingSet,QueryEvaluationException> implements TupleQueryResult
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Field Summary
Fields Modifier and Type Field Description private DistinctIteration<BindingSet,QueryEvaluationException>
filter
private TupleQueryResult
unfiltered
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Constructor Summary
Constructors Constructor Description TupleQueryResultFilter(TupleQueryResult wrappedResult)
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description java.util.List<java.lang.String>
getBindingNames()
Gets the names of the bindings, in order of projection.void
handleClose()
Called byAbstractCloseableIteration.close()
when it is called for the first time.boolean
hasNext()
Returnstrue
if the query result has more elements.BindingSet
next()
Returns the next element in the query result.void
remove()
Removes from the underlying collection the last element returned by the iteration (optional operation).-
Methods inherited from class org.eclipse.rdf4j.common.iteration.AbstractCloseableIteration
close, isClosed
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Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
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Methods inherited from interface org.eclipse.rdf4j.common.iteration.CloseableIteration
close
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Methods inherited from interface org.eclipse.rdf4j.query.QueryResult
iterator, stream
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Field Detail
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filter
private final DistinctIteration<BindingSet,QueryEvaluationException> filter
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unfiltered
private final TupleQueryResult unfiltered
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Constructor Detail
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TupleQueryResultFilter
public TupleQueryResultFilter(TupleQueryResult wrappedResult)
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Method Detail
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hasNext
public boolean hasNext() throws QueryEvaluationException
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.
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next
public BindingSet next() throws QueryEvaluationException
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.
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remove
public void remove() throws QueryEvaluationException
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
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handleClose
public void handleClose() throws QueryEvaluationException
Description copied from class:AbstractCloseableIteration
Called byAbstractCloseableIteration.close()
when it is called for the first time. This method is only called once on each iteration. By default, this method does nothing.- Overrides:
handleClose
in classAbstractCloseableIteration<BindingSet,QueryEvaluationException>
- Throws:
QueryEvaluationException
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getBindingNames
public java.util.List<java.lang.String> getBindingNames() throws QueryEvaluationException
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
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