Class CleanerGraphQueryResult
- java.lang.Object
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- org.eclipse.rdf4j.common.concurrent.locks.diagnostics.CleanerGraphQueryResult
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- All Implemented Interfaces:
java.lang.AutoCloseable,java.lang.Iterable<Statement>,CloseableIteration<Statement,QueryEvaluationException>,Iteration<Statement,QueryEvaluationException>,GraphQueryResult,QueryResult<Statement>
@InternalUseOnly public class CleanerGraphQueryResult extends java.lang.Object implements GraphQueryResult
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Nested Class Summary
Nested Classes Modifier and Type Class Description private static classCleanerGraphQueryResult.CleanableState
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Field Summary
Fields Modifier and Type Field Description private java.lang.ref.Cleaner.Cleanablecleanableprivate GraphQueryResultdelegateprivate static org.slf4j.Loggerloggerprivate CleanerGraphQueryResult.CleanableStatestate
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Constructor Summary
Constructors Constructor Description CleanerGraphQueryResult(GraphQueryResult delegate, ConcurrentCleaner cleaner)
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description voidclose()Closes this iteration, freeing any resources that it is holding.java.util.Map<java.lang.String,java.lang.String>getNamespaces()Retrieves relevant namespaces from the query result.booleanhasNext()Returnstrueif the query result has more elements.Statementnext()Returns the next element in the query result.voidremove()Removes from the underlying collection the last element returned by the iteration (optional operation).-
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.query.QueryResult
iterator, stream
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Field Detail
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logger
private static final org.slf4j.Logger logger
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delegate
private final GraphQueryResult delegate
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cleanable
private final java.lang.ref.Cleaner.Cleanable cleanable
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state
private final CleanerGraphQueryResult.CleanableState state
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Constructor Detail
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CleanerGraphQueryResult
public CleanerGraphQueryResult(GraphQueryResult delegate, ConcurrentCleaner cleaner)
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Method Detail
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close
public void close()
Description copied from interface:CloseableIterationCloses 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:
closein interfacejava.lang.AutoCloseable- Specified by:
closein interfaceCloseableIteration<Statement,QueryEvaluationException>
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hasNext
public boolean hasNext()
Description copied from interface:QueryResultReturnstrueif the query result has more elements. (In other words, returnstrueifQueryResult.next()would return an element rather than throwing aNoSuchElementException.)- Specified by:
hasNextin interfaceIteration<Statement,QueryEvaluationException>- Specified by:
hasNextin interfaceQueryResult<Statement>- Returns:
trueif the iteration has more elements.
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next
public Statement next()
Description copied from interface:QueryResultReturns the next element in the query result.- Specified by:
nextin interfaceIteration<Statement,QueryEvaluationException>- Specified by:
nextin interfaceQueryResult<Statement>- Returns:
- the next element in the query result.
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remove
public void remove()
Description copied from interface:IterationRemoves 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:
removein interfaceIteration<Statement,QueryEvaluationException>
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getNamespaces
public java.util.Map<java.lang.String,java.lang.String> getNamespaces() throws QueryEvaluationExceptionDescription copied from interface:GraphQueryResultRetrieves 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:
getNamespacesin interfaceGraphQueryResult- Returns:
- a Map<String, String> object containing (prefix, namespace) pairs.
- Throws:
QueryEvaluationException
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