org.apache.xalan.xsltc.dom
Class ForwardPositionIterator

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

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

public final class ForwardPositionIterator
extends 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.)


Constructor Summary
ForwardPositionIterator(DTMAxisIterator source)
          Deprecated.  
 
Method Summary
 DTMAxisIterator cloneIterator()
          Deprecated.  
 void gotoMark()
          Deprecated.  
 int next()
          Deprecated.  
 DTMAxisIterator reset()
          Deprecated.  
 void setMark()
          Deprecated.  
 DTMAxisIterator setStartNode(int node)
          Deprecated.  
 
Methods inherited from class org.apache.xml.dtm.ref.DTMAxisIteratorBase
getAxis, getLast, getNodeByPosition, getPosition, getStartNode, includeSelf, isDocOrdered, isReverse, setRestartable
 
Methods inherited from class java.lang.Object
equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

ForwardPositionIterator

public ForwardPositionIterator(DTMAxisIterator source)
Deprecated. 
Method Detail

cloneIterator

public DTMAxisIterator cloneIterator()
Deprecated. 
Overrides:
cloneIterator in class DTMAxisIteratorBase

next

public int next()
Deprecated. 

setStartNode

public DTMAxisIterator setStartNode(int node)
Deprecated. 

reset

public DTMAxisIterator reset()
Deprecated. 
Overrides:
reset in class DTMAxisIteratorBase

setMark

public void setMark()
Deprecated. 

gotoMark

public void gotoMark()
Deprecated. 


Copyright 2006 Apache XML Project. All Rights Reserved.