org.apache.xml.dtm.ref

## Class EmptyIterator

- java.lang.Object
- - org.apache.xml.dtm.ref.EmptyIterator

- All Implemented Interfaces:
    java.lang.Cloneable, DTMAxisIterator

      public final class EmptyIterator
      extends java.lang.Object
      implements DTMAxisIterator

  DTM Empty Axis Iterator. The class is immutable

- - ### Field Summary

    - ### Fields inherited from interface org.apache.xml.dtm.DTMAxisIterator

      `END`

  - ### Method Summary

    Methods
    Modifier and Type | Method and Description
    --- | ---
    `DTMAxisIterator` | `cloneIterator()`
    `static DTMAxisIterator` | `getInstance()`
    `int` | `getLast()`
    `int` | `getNodeByPosition(int position)` Return the node at the given position.
    `int` | `getPosition()`
    `int` | `getStartNode()` Get start to END should 'close' the iterator, i.e. subsequent call to next() should return END.
    `void` | `gotoMark()` Restores the current node remembered by setMark().
    `boolean` | `isReverse()`
    `int` | `next()` Get the next node in the iteration.
    `DTMAxisIterator` | `reset()` Resets the iterator to the last start node.
    `void` | `setMark()` Remembers the current node for the next call to gotoMark().
    `void` | `setRestartable(boolean isRestartable)` Set if restartable.
    `DTMAxisIterator` | `setStartNode(int node)` Set start to END should 'close' the iterator, i.e. subsequent call to next() should return END.

    - ### Methods inherited from class java.lang.Object

      `equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

- - ### Method Detail

    - #### getInstance

          public static DTMAxisIterator getInstance()

    - #### next

          public final int next()

      Description copied from interface: `DTMAxisIterator`
      Get the next node in the iteration.
      Specified by:
        `next` in interface `DTMAxisIterator`
      Returns:
        The next node handle in the iteration, or END.

    - #### reset

          public final DTMAxisIterator reset()

      Description copied from interface: `DTMAxisIterator`
      Resets the iterator to the last start node.
      Specified by:
        `reset` in interface `DTMAxisIterator`
      Returns:
        A DTMAxisIterator, which may or may not be the same as this iterator.

    - #### getLast

          public final int getLast()

      Specified by:
        `getLast` in interface `DTMAxisIterator`
      Returns:
        the number of nodes in this iterator. This may be an expensive operation when called the first time.

    - #### getPosition

          public final int getPosition()

      Specified by:
        `getPosition` in interface `DTMAxisIterator`
      Returns:
        The position of the current node in the set, as defined by XPath.

    - #### setMark

          public final void setMark()

      Description copied from interface: `DTMAxisIterator`
      Remembers the current node for the next call to gotoMark().
      Specified by:
        `setMark` in interface `DTMAxisIterator`

    - #### gotoMark

          public final void gotoMark()

      Description copied from interface: `DTMAxisIterator`
      Restores the current node remembered by setMark().
      Specified by:
        `gotoMark` in interface `DTMAxisIterator`

    - #### setStartNode

          public final DTMAxisIterator setStartNode(int node)

      Description copied from interface: `DTMAxisIterator`
      Set start to END should 'close' the iterator, i.e. subsequent call to next() should return END.
      Specified by:
        `setStartNode` in interface `DTMAxisIterator`
      Parameters:
        `node` - Sets the root of the iteration.
      Returns:
        A DTMAxisIterator set to the start of the iteration.

    - #### getStartNode

          public final int getStartNode()

      Description copied from interface: `DTMAxisIterator`
      Get start to END should 'close' the iterator, i.e. subsequent call to next() should return END.
      Specified by:
        `getStartNode` in interface `DTMAxisIterator`
      Returns:
        The root node of the iteration.

    - #### isReverse

          public final boolean isReverse()

      Specified by:
        `isReverse` in interface `DTMAxisIterator`
      Returns:
        true if this iterator has a reversed axis, else false.

    - #### cloneIterator

          public final DTMAxisIterator cloneIterator()

      Specified by:
        `cloneIterator` in interface `DTMAxisIterator`
      Returns:
        a deep copy of this iterator. The clone should not be reset from its current position.

    - #### setRestartable

          public final void setRestartable(boolean isRestartable)

      Description copied from interface: `DTMAxisIterator`
      Set if restartable.
      Specified by:
        `setRestartable` in interface `DTMAxisIterator`

    - #### getNodeByPosition

          public final int getNodeByPosition(int position)

      Description copied from interface: `DTMAxisIterator`
      Return the node at the given position.
      Specified by:
        `getNodeByPosition` in interface `DTMAxisIterator`
      Parameters:
        `position` - The position
      Returns:
        The node at the given position.

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