Examples of org.apache.xpath.NodeSetDTM

org.apache.xpath.NodeSetDTM

The NodeSetDTM class can act as either a NodeVector, NodeList, or NodeIterator. However, in order for it to act as a NodeVector or NodeList, it's required that setShouldCacheNodes(true) be called before the first nextNode() is called, in order that nodes can be added as they are fetched. Derived classes that implement iterators must override runTo(int index), in order that they may run the iteration to the given index.

Note that we directly implement the DOM's NodeIterator interface. We do not emulate all the behavior of the standard NodeIterator. In particular, we do not guarantee to present a "live view" of the document ... but in XSLT, the source document should never be mutated, so this should never be an issue.

Thought: Should NodeSetDTM really implement NodeList and NodeIterator, or should there be specific subclasses of it which do so? The advantage of doing it all here is that all NodeSetDTMs will respond to the same calls; the disadvantage is that some of them may return less-than-enlightening results when you do so.
@xsl.usage advanced

      throw new SAXNotSupportedException(XSLMessages.createMessage(XSLTErrorResources.ER_INVALID_CONTEXT_PASSED, new Object[]{myContext }));


    if (expr == null || expr.length() == 0)
      return Double.NaN;
      
    NodeSetDTM contextNodes = new NodeSetDTM(nl, xctxt);
    xctxt.pushContextNodeList(contextNodes);
    
    double maxValue = Double.MIN_VALUE;
    for (int i = 0; i < contextNodes.getLength(); i++)
    {
      int contextNode = contextNodes.item(i);
      xctxt.pushCurrentNode(contextNode);
      
      double result = 0;
      try
      {

View Full Code Here

      throw new SAXNotSupportedException(XSLMessages.createMessage(XSLTErrorResources.ER_INVALID_CONTEXT_PASSED, new Object[]{myContext }));


    if (expr == null || expr.length() == 0)
      return Double.NaN;
      
    NodeSetDTM contextNodes = new NodeSetDTM(nl, xctxt);
    xctxt.pushContextNodeList(contextNodes);
    
    double minValue = Double.MAX_VALUE;
    for (int i = 0; i < nl.getLength(); i++)
    {
      int contextNode = contextNodes.item(i);
      xctxt.pushCurrentNode(contextNode);
      
      double result = 0;
      try
      {

View Full Code Here

      throw new SAXNotSupportedException(XSLMessages.createMessage(XSLTErrorResources.ER_INVALID_CONTEXT_PASSED, new Object[]{myContext }));


    if (expr == null || expr.length() == 0)
      return Double.NaN;
      
    NodeSetDTM contextNodes = new NodeSetDTM(nl, xctxt);
    xctxt.pushContextNodeList(contextNodes);
    
    double sum = 0;
    for (int i = 0; i < nl.getLength(); i++)
    {
      int contextNode = contextNodes.item(i);
      xctxt.pushCurrentNode(contextNode);
      
      double result = 0;
      try
      {

View Full Code Here

      throw new SAXNotSupportedException(XSLMessages.createMessage(XSLTErrorResources.ER_INVALID_CONTEXT_PASSED, new Object[]{myContext }));


    if (expr == null || expr.length() == 0)
      return new NodeSet();
      
    NodeSetDTM contextNodes = new NodeSetDTM(nl, xctxt);
    xctxt.pushContextNodeList(contextNodes);
    
    NodeSet resultSet = new NodeSet();
    resultSet.setShouldCacheNodes(true);
    
    for (int i = 0; i < nl.getLength(); i++)
    {
      int contextNode = contextNodes.item(i);
      xctxt.pushCurrentNode(contextNode);
      
      XObject object = null;
      try
      {

View Full Code Here

    do
    {
    
      NodeSet iterationSet = new NodeSet();


      NodeSetDTM contextNodes = new NodeSetDTM(iterationList, xctxt);
      xctxt.pushContextNodeList(contextNodes);
      
      for (int i = 0; i < iterationList.getLength(); i++)
      {
        int contextNode = contextNodes.item(i);
        xctxt.pushCurrentNode(contextNode);


        XObject object = null;
        try
        {

View Full Code Here

      error(xctxt, XPATHErrorResources.ER_CONTEXT_HAS_NO_OWNERDOC, null);


    XObject arg = m_arg0.execute(xctxt);
    int argType = arg.getType();
    XNodeSet nodes = new XNodeSet(xctxt.getDTMManager());
    NodeSetDTM nodeSet = nodes.mutableNodeset();


    if (XObject.CLASS_NODESET == argType)
    {
      DTMIterator ni = arg.iter();
      StringVector usedrefs = null;

View Full Code Here

  NodeVector getMatchingAncestors(
          XPathContext xctxt, int node, boolean stopAtFirstFound)
            throws javax.xml.transform.TransformerException
  {


    NodeSetDTM ancestors = new NodeSetDTM(xctxt.getDTMManager());
    XPath countMatchPattern = getCountMatchPattern(xctxt, node);
    DTM dtm = xctxt.getDTM(node);


    while (DTM.NULL != node)
    {
      if ((null != m_fromMatchPattern)
              && (m_fromMatchPattern.getMatchScore(xctxt, node)
                  != XPath.MATCH_SCORE_NONE))
      {


        // The following if statement gives level="single" different 
        // behavior from level="multiple", which seems incorrect according 
        // to the XSLT spec.  For now we are leaving this in to replicate 
        // the same behavior in XT, but, for all intents and purposes we 
        // think this is a bug, or there is something about level="single" 
        // that we still don't understand.
        if (!stopAtFirstFound)
          break;
      }


      if (null == countMatchPattern)
        System.out.println(
          "Programmers error! countMatchPattern should never be null!");


      if (countMatchPattern.getMatchScore(xctxt, node)
              != XPath.MATCH_SCORE_NONE)
      {
        ancestors.addElement(node);


        if (stopAtFirstFound)
          break;
      }

View Full Code Here

      // so that's what the appendBtoFList stuff is all about.  In cases 
      // of forward counting by one, this will mean a single node copy from 
      // the backwards list (m_newFound) to the forwards list (counter.m_countNodes).
      count = 0;
      if (m_newFound == null)
        m_newFound = new NodeSetDTM(support.getDTMManager());


      for (; DTM.NULL != target;
              target = numberElem.getPreviousNode(support, target))
      {


        // First time in, we should not have to check for previous counts, 
        // since the original target node was already checked in the 
        // block above.
        if (0 != count)
        {
          for (int i = 0; i < nCounters; i++)
          {
            Counter counter = (Counter) counters.elementAt(i);
            int cacheLen = counter.m_countNodes.size();


            if ((cacheLen > 0)
                    && (counter.m_countNodes.elementAt(cacheLen
                                                      - 1) == target))
            {
              count += (cacheLen + counter.m_countNodesStartCount);


              if (cacheLen > 0)
                appendBtoFList(counter.m_countNodes, m_newFound);


              m_newFound.removeAllElements();


              return count;
            }
          }
        }


        m_newFound.addElement(target);


        count++;
      }


      // If we got to this point, then we didn't find a counter, so make 
      // one and add it to the list.
      Counter counter = new Counter(numberElem, new NodeSetDTM(support.getDTMManager()));


      m_countersMade++;  // for diagnostics


      appendBtoFList(counter.m_countNodes, m_newFound);
      m_newFound.removeAllElements();

View Full Code Here

      throw new SAXNotSupportedException(XSLMessages.createMessage(XSLTErrorResources.ER_INVALID_CONTEXT_PASSED, new Object[]{myContext }));


    if (expr == null || expr.length() == 0)
      return Double.NaN;
      
    NodeSetDTM contextNodes = new NodeSetDTM(nl, xctxt);
    xctxt.pushContextNodeList(contextNodes);
    
    double maxValue = - Double.MAX_VALUE;
    for (int i = 0; i < contextNodes.getLength(); i++)
    {
      int contextNode = contextNodes.item(i);
      xctxt.pushCurrentNode(contextNode);
      
      double result = 0;
      try
      {

View Full Code Here

      throw new SAXNotSupportedException(XSLMessages.createMessage(XSLTErrorResources.ER_INVALID_CONTEXT_PASSED, new Object[]{myContext }));


    if (expr == null || expr.length() == 0)
      return Double.NaN;
      
    NodeSetDTM contextNodes = new NodeSetDTM(nl, xctxt);
    xctxt.pushContextNodeList(contextNodes);
    
    double minValue = Double.MAX_VALUE;
    for (int i = 0; i < nl.getLength(); i++)
    {
      int contextNode = contextNodes.item(i);
      xctxt.pushCurrentNode(contextNode);
      
      double result = 0;
      try
      {

View Full Code Here

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Related Classes of org.apache.xpath.NodeSetDTM

org.apache.xalan.lib.ExsltDynamic

org.apache.xalan.templates.ElemNumber

org.apache.xalan.templates.FuncDocument

org.apache.xalan.transformer.CountersTable

org.apache.xalan.transformer.KeyRefIterator

org.apache.xml.dtm.DTM

org.apache.xml.security.transforms.implementations.FuncHere

org.apache.xpath.axes.LocPathIterator

org.apache.xpath.axes.UnionPathIterator

org.apache.xpath.functions.FuncId

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