Class IterationWrapper<E>

java.lang.Object
org.eclipse.rdf4j.common.iteration.AbstractCloseableIteration<E>
org.eclipse.rdf4j.common.iteration.IterationWrapper<E>
All Implemented Interfaces:
AutoCloseable, Iterator<E>, CloseableIteration<E>
Direct Known Subclasses:
BackgroundGraphResult, InsertBindingSetCursor, IteratingGraphQueryResult, IteratingTupleQueryResult, LimitIteration, LockingIteration, SilentIteration, TimeLimitIteration
@Deprecated(since="4.1.0") public class IterationWrapper<E> extends AbstractCloseableIteration<E>
Deprecated.
Abstract superclass for Iterations that wrap other Iterations. The abstract class IterationWrapper itself provides default methods that forward method calls to the wrapped Iteration. Subclasses of IterationWrapper should override some of these methods and may also provide additional methods and fields.

  • Field Details

    • wrappedIter

      @Deprecated(since="4.1.0") protected final CloseableIteration<? extends E> wrappedIter
      Deprecated.
      This will be changed to private, possibly with an accessor in future. Do not rely on it.
      The wrapped Iteration.

  • Constructor Details

    • IterationWrapper

      protected IterationWrapper(CloseableIteration<? extends E> iter)
      Deprecated.
      Creates a new IterationWrapper that operates on the supplied Iteration.
      Parameters:
      iter - The wrapped Iteration for this IterationWrapper, must not be null.

  • Method Details

    • hasNext

      public boolean hasNext()
      Deprecated.
      Checks whether the wrapped Iteration contains more elements, closing this Iteration when this is not the case.
      Returns:
      true if the wrapped Iteration contains more elements, false otherwise.

    • next

      public E next()
      Deprecated.
      Returns the next element from the wrapped Iteration.
      Throws:
      NoSuchElementException - If all elements have been returned or it has been closed.

    • remove

      public void remove()
      Deprecated.
      Removes the last element that has been returned from the wrapped Iteration.
      Throws:
      UnsupportedOperationException - If the wrapped Iteration does not support the remove operation.
      IllegalStateException - if the Iteration has been closed, or if next() has not yet been called, or remove() has already been called after the last call to next().

    • handleClose

      protected void handleClose()
      Deprecated.
      Closes this Iteration and also closes the wrapped Iteration if it is a CloseableIteration.
      Specified by:
      handleClose in class AbstractCloseableIteration<E>