Class ForwardPositionIterator

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

    public final class ForwardPositionIterator
    extends DTMAxisIteratorBase
    Deprecated.
    This class exists only for backwards compatibility with old translets. New code should not reference it.
    This iterator is a wrapper that always returns the position of a node in document order. It is needed for the case where a call to position() occurs in the context of an XSLT element such as xsl:for-each, xsl:apply-templates, etc. The getPosition() methods in DTMAxisIterators defined in DTMDefaultBaseIterators always return the position in document order, which is backwards for XPath in the case of the ancestor, ancestor-or-self, previous and previous-sibling. XSLTC implements position() with the BasisLibrary.positionF() method, and uses the DTMAxisIterator.isReverse() method to determine whether the result of getPosition() should be interpreted as being equal to position(). But when the expression appears in apply-templates of for-each, the position() function operates in document order. The only effect of the ForwardPositionIterator is to force the result of isReverse() to false, so that BasisLibrary.positionF() calculates position() in a way that's consistent with the context in which the iterator is being used." (Apparently the correction of isReverse() occurs implicitly, by inheritance. This class also appears to maintain its own position counter, which seems redundant.)
    • Constructor Detail

      • ForwardPositionIterator

        public ForwardPositionIterator​(DTMAxisIterator source)
        Deprecated.
    • Method Detail

      • next

        public int next()
        Deprecated.
        Description copied from interface: DTMAxisIterator
        Get the next node in the iteration.
        Returns:
        The next node handle in the iteration, or END.
      • setStartNode

        public DTMAxisIterator setStartNode​(int node)
        Deprecated.
        Description copied from interface: DTMAxisIterator
        Set start to END should 'close' the iterator, i.e. subsequent call to next() should return END.
        Parameters:
        node - Sets the root of the iteration.
        Returns:
        A DTMAxisIterator set to the start of the iteration.
      • setMark

        public void setMark()
        Deprecated.
        Description copied from interface: DTMAxisIterator
        Remembers the current node for the next call to gotoMark().
      • gotoMark

        public void gotoMark()
        Deprecated.
        Description copied from interface: DTMAxisIterator
        Restores the current node remembered by setMark().