Class AbstractCloseableIteration<E>
java.lang.Object
org.eclipse.rdf4j.common.iteration.AbstractCloseableIteration<E>
- All Implemented Interfaces:
AutoCloseable,Iterator<E>,CloseableIteration<E>
- Direct Known Subclasses:
AbstractCloseableIteratorIteration,CloseDependentConnectionIteration,CollectionIteration,ConvertingIteration,DelayedIteration,ExceptionConvertingIteration,GraphToBindingSetConversionIteration,IterationWrapper,LookAheadIteration,PrintingIteration,QueryContextIteration,QueryResultIteration,RepositoryResult,SingleBindingSetIteration,SingletonIteration,StatementConversionIteration,StopRemainingExecutionsOnCloseIteration,ThreadSafeDelayedIteration
Base class for
CloseableIterations offering common functionality. This class keeps track of whether the
iteration has been closed and handles multiple calls to close() by ignoring all but the first call.
Instances of this class is not safe to be accessed from multiple threads at the same time.
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Constructor Summary
Constructors -
Method Summary
Modifier and TypeMethodDescriptionfinal voidclose()CallshandleClose()upon first call and makes sure the resource closures are only executed once.protected abstract voidCalled byclose()when it is called for the first time.final booleanisClosed()Checks whether this CloseableIteration has been closed.Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, waitMethods inherited from interface org.eclipse.rdf4j.common.iteration.CloseableIteration
streamMethods inherited from interface java.util.Iterator
forEachRemaining, hasNext, next, remove
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Constructor Details
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AbstractCloseableIteration
public AbstractCloseableIteration()
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Method Details
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isClosed
public final boolean isClosed()Checks whether this CloseableIteration has been closed.- Returns:
- true if the CloseableIteration has been closed, false otherwise.
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close
public final void close()CallshandleClose()upon first call and makes sure the resource closures are only executed once.- Specified by:
closein interfaceAutoCloseable- Specified by:
closein interfaceCloseableIteration<E>
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handleClose
protected abstract void handleClose()Called byclose()when it is called for the first time. This method is only called once on each iteration. By default, this method does nothing.
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