Examples of org.apache.xpath.axes.LocPathIterator

org.apache.xpath.axes.LocPathIterator
3.org/TR/xpath#NT-LocationPath>LocationPath.
If setShouldCacheNodes(true) is called, as each node is iterated via nextNode(), the node is also stored in the NodeVector, so that previousNode() can easily be done, except in the case where the LocPathIterator is "owned" by a UnionPathIterator, in which case the UnionPathIterator will cache the nodes.

    // %TBD% Hack city...
    if (null != subContextList && subContextList instanceof PredicatedNodeTest)
    {
      // PredicatedNodeTest iter = (PredicatedNodeTest) xctxt.getSubContextList();
      // LocPathIterator lpi = iter.getLocPathIterator();
      LocPathIterator lpi = xctxt.getCurrentNodeList();


      currentNode = lpi.getCurrentContextNode();  
        
    }
    else if(xctxt.getIteratorRoot() != DTM.NULL)
    {
      currentNode = xctxt.getIteratorRoot();

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    SubContextList subContextList = xctxt.getCurrentNodeList();
    int currentNode = DTM.NULL;


    if (null != subContextList) {
        if (subContextList instanceof PredicatedNodeTest) {
            LocPathIterator iter = ((PredicatedNodeTest)subContextList)
                                                          .getLocPathIterator();
            currentNode = iter.getCurrentContextNode();
         } else if(subContextList instanceof StepPattern) {
           throw new RuntimeException(XSLMessages.createMessage(
              XSLTErrorResources.ER_PROCESSOR_ERROR,null));
         }
    } else {

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      WalkingIterator iter = (WalkingIterator)owner.getExpression();
      
      if(DIAGNOSE_MULTISTEPLIST)
        diagnoseLineNumber(iter);
      
      LocPathIterator newIter2 = 
          changePartToRef(var.getName(), iter, lengthToTest, isGlobal);
      owner.setExpression(newIter2);
      
      matchedPaths = matchedPaths.m_next;
    }

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      ExpressionOwner eo = (ExpressionOwner)paths.elementAt(i);
      if(null == eo)
        continue;
        
      // Assuming location path iterators should be OK.
      LocPathIterator lpi = (LocPathIterator)eo.getExpression();
      int numPaths = countSteps(lpi);
      if(numPaths > 1)
      {
        if(null == first)
          first = new MultistepExprHolder(eo, numPaths, null);

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  Expression expr1 = firstOccuranceOwner.getExpression();
  if(DEBUG)
    assertIsLocPathIterator(expr1, firstOccuranceOwner);
  boolean isGlobal = (paths == m_absPaths);
  LocPathIterator lpi = (LocPathIterator)expr1;
  int stepCount = countSteps(lpi);
  for(int j = start; j < n; j++)
  {
    ExpressionOwner owner2 = (ExpressionOwner)paths.elementAt(j);
    if(null != owner2)
    {
      Expression expr2 = owner2.getExpression();
      boolean isEqual = expr2.deepEquals(lpi);
      if(isEqual)
      {      
        LocPathIterator lpi2  = (LocPathIterator)expr2;        
        if(null == head)
        {
          head = new MultistepExprHolder(firstOccuranceOwner, stepCount, null);
          tail = head;
          numPathsFound++;
        }
        tail.m_next = new MultistepExprHolder(owner2, stepCount, null);
        tail = tail.m_next;
  
        // Null out the occurance, so we don't have to test it again.
        paths.setElementAt(null, j);
        
        // foundFirst = true;
        numPathsFound++;
      }
    }
  }
  
  // Change all globals in xsl:templates, etc, to global vars no matter what.
  if((0 == numPathsFound) && isGlobal)
  {
      head = new MultistepExprHolder(firstOccuranceOwner, stepCount, null);
      numPathsFound++;
  }
  
  if(null != head)
  {
    ElemTemplateElement root = isGlobal ? psuedoVarRecipient : findCommonAncestor(head);
    LocPathIterator sharedIter = (LocPathIterator)head.m_exprOwner.getExpression();
    ElemVariable var = createPseudoVarDecl(root, sharedIter, isGlobal);
    if(DIAGNOSE_MULTISTEPLIST)
      System.err.println("Created var: "+var.getName()+(isGlobal ? "(Global)" : ""));
    QName uniquePseudoVarName = var.getName();
    while(null != head)

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  int n = paths.size();
  Expression expr1 = firstOccuranceOwner.getExpression();
  if(DEBUG)
    assertIsLocPathIterator(expr1, firstOccuranceOwner);
  boolean isGlobal = (paths == m_absPaths);
  LocPathIterator lpi = (LocPathIterator)expr1;
  for(int j = start; j < n; j++)
  {
    ExpressionOwner owner2 = (ExpressionOwner)paths.elementAt(j);
    if(null != owner2)
    {
      Expression expr2 = owner2.getExpression();
      boolean isEqual = expr2.deepEquals(lpi);
      if(isEqual)
      {      
        LocPathIterator lpi2  = (LocPathIterator)expr2;        
        if(!foundFirst)
        {
          foundFirst = true;
          // Insert variable decl into psuedoVarRecipient
          // We want to insert this into the first legitimate

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    SubContextList subContextList = xctxt.getCurrentNodeList();
    int currentNode = DTM.NULL;


    if (null != subContextList) {
        if (subContextList instanceof PredicatedNodeTest) {
            LocPathIterator iter = ((PredicatedNodeTest)subContextList)
                                                          .getLocPathIterator();
            currentNode = iter.getCurrentContextNode();
         } else if(subContextList instanceof StepPattern) {
           throw new RuntimeException(XSLMessages.createMessage(
              XSLTErrorResources.ER_PROCESSOR_ERROR,null));
         }
    } else {

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      WalkingIterator iter = (WalkingIterator)owner.getExpression();
      
      if(DIAGNOSE_MULTISTEPLIST)
        diagnoseLineNumber(iter);
      
      LocPathIterator newIter2 = 
          changePartToRef(var.getName(), iter, lengthToTest, isGlobal);
      owner.setExpression(newIter2);
      
      matchedPaths = matchedPaths.m_next;
    }

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      ExpressionOwner eo = (ExpressionOwner)paths.elementAt(i);
      if(null == eo)
        continue;
        
      // Assuming location path iterators should be OK.
      LocPathIterator lpi = (LocPathIterator)eo.getExpression();
      int numPaths = countSteps(lpi);
      if(numPaths > 1)
      {
        if(null == first)
          first = new MultistepExprHolder(eo, numPaths, null);

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  Expression expr1 = firstOccuranceOwner.getExpression();
  if(DEBUG)
    assertIsLocPathIterator(expr1, firstOccuranceOwner);
  boolean isGlobal = (paths == m_absPaths);
  LocPathIterator lpi = (LocPathIterator)expr1;
  int stepCount = countSteps(lpi);
  for(int j = start; j < n; j++)
  {
    ExpressionOwner owner2 = (ExpressionOwner)paths.elementAt(j);
    if(null != owner2)
    {
      Expression expr2 = owner2.getExpression();
      boolean isEqual = expr2.deepEquals(lpi);
      if(isEqual)
      {      
        LocPathIterator lpi2  = (LocPathIterator)expr2;        
        if(null == head)
        {
          head = new MultistepExprHolder(firstOccuranceOwner, stepCount, null);
          tail = head;
          numPathsFound++;
        }
        tail.m_next = new MultistepExprHolder(owner2, stepCount, null);
        tail = tail.m_next;
  
        // Null out the occurance, so we don't have to test it again.
        paths.setElementAt(null, j);
        
        // foundFirst = true;
        numPathsFound++;
      }
    }
  }
  
  // Change all globals in xsl:templates, etc, to global vars no matter what.
  if((0 == numPathsFound) && isGlobal)
  {
      head = new MultistepExprHolder(firstOccuranceOwner, stepCount, null);
      numPathsFound++;
  }
  
  if(null != head)
  {
    ElemTemplateElement root = isGlobal ? psuedoVarRecipient : findCommonAncestor(head);
    LocPathIterator sharedIter = (LocPathIterator)head.m_exprOwner.getExpression();
    ElemVariable var = createPseudoVarDecl(root, sharedIter, isGlobal);
    if(DIAGNOSE_MULTISTEPLIST)
      System.err.println("Created var: "+var.getName()+(isGlobal ? "(Global)" : ""));
    QName uniquePseudoVarName = var.getName();
    while(null != head)

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org.apache.xalan.templates.FuncKey

org.apache.xalan.templates.RedundentExprEliminator

org.apache.xalan.transformer.KeyManager

org.apache.xml.dtm.DTM

org.apache.xml.dtm.DTMIterator

org.apache.xpath.axes.AxesWalker

org.apache.xpath.functions.FuncCurrent

org.apache.xpath.NodeSet

org.apache.xpath.NodeSetDTM

org.apache.xpath.objects.XNodeSet

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