Class Navigator.DescendantEnumeration

  • All Implemented Interfaces:
    AtomizableIterator, AxisIterator, SequenceIterator
    Enclosing class:
    Navigator

    public static final class Navigator.DescendantEnumeration
    extends Navigator.BaseEnumeration
    General-purpose implementation of the descendant and descendant-or-self axes, in terms of the child axis. But it also has the option to return the descendants in reverse document order; this is used when evaluating the preceding axis. Note that the includeSelf option should not be used when scanning in reverse order, as the self node will always be returned first.
    • Constructor Detail

      • DescendantEnumeration

        public DescendantEnumeration​(NodeInfo start,
                                     boolean includeSelf,
                                     boolean forwards)
    • Method Detail

      • advance

        public void advance()
        Description copied from class: Navigator.BaseEnumeration
        The advance() method must be provided in each concrete implementation. It must leave the variable current set to the next node to be returned in the iteration, or to null if there are no more nodes to be returned.
        Specified by:
        advance in class Navigator.BaseEnumeration
      • getAnother

        public SequenceIterator getAnother()
        Description copied from interface: AxisIterator
        Get another iterator over the same sequence of items, positioned at the start of the sequence. It must be possible to call this method at any time, whether none, some, or all of the items in the original iterator have been read. The method is non-destructive: it does not change the state of the original iterator.
        Specified by:
        getAnother in interface AxisIterator
        Specified by:
        getAnother in interface SequenceIterator
        Specified by:
        getAnother in class Navigator.BaseEnumeration
        Returns:
        a new iterator over the same sequence