ForwardPositionIterator

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Class

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Deprecated

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org.apache.xalan.xsltc.dom
Class ForwardPositionIterator

java.lang.Object
  org.apache.xml.dtm.ref.DTMAxisIteratorBase
      org.apache.xalan.xsltc.dom.ForwardPositionIterator

All Implemented Interfaces:: java.lang.Cloneable, org.apache.xml.dtm.DTMAxisIterator

Deprecated. This class exists only for backwards compatibility with old translets. New code should not reference it.

public final class ForwardPositionIterator
extends org.apache.xml.dtm.ref.DTMAxisIteratorBase

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.)

Field Summary

private org.apache.xml.dtm.DTMAxisIterator _source
          Deprecated.

Fields inherited from class org.apache.xml.dtm.ref.DTMAxisIteratorBase

_includeSelf, _isRestartable, _last, _markedNode, _position, _startNode

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

END

Constructor Summary

ForwardPositionIterator(org.apache.xml.dtm.DTMAxisIterator source)
          Deprecated.

Method Summary

org.apache.xml.dtm.DTMAxisIterator cloneIterator()
          Deprecated. Returns a deep copy of this iterator.

void gotoMark()
          Deprecated. Restores the current node remembered by setMark().

int next()
          Deprecated. Get the next node in the iteration.

org.apache.xml.dtm.DTMAxisIterator reset()
          Deprecated. Resets the iterator to the last start node.

void setMark()
          Deprecated. Remembers the current node for the next call to gotoMark().

org.apache.xml.dtm.DTMAxisIterator setStartNode(int node)
          Deprecated. Set start to END should 'close' the iterator, i.e.

Methods inherited from class org.apache.xml.dtm.ref.DTMAxisIteratorBase

getAxis, getLast, getNodeByPosition, getPosition, getStartNode, includeSelf, isDocOrdered, isReverse, resetPosition, returnNode, setRestartable

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

_source

private org.apache.xml.dtm.DTMAxisIterator _source

Deprecated.

Constructor Detail