import com.sun.org.apache.xml.internal.dtm.DTMAxisTraverser; //导入依赖的package包/类
public DTMAxisTraverser getAxisTraverser(final int axis)
{
    if (_dom != null) {
        return _dom.getAxisTraverser(axis);
    }
    else {
        return super.getAxisTraverser(axis);
    }
}
 

import com.sun.org.apache.xml.internal.dtm.DTMAxisTraverser; //导入依赖的package包/类
/**
 * Execute the match pattern step relative to another step.
 *
 *
 * @param xctxt The XPath runtime context.
 * @param dtm The DTM of the current node.
 * @param currentNode The current node context.
 *
 * @return {@link com.sun.org.apache.xpath.internal.patterns.NodeTest#SCORE_NODETEST},
 *         {@link com.sun.org.apache.xpath.internal.patterns.NodeTest#SCORE_NONE},
 *         {@link com.sun.org.apache.xpath.internal.patterns.NodeTest#SCORE_NSWILD},
 *         {@link com.sun.org.apache.xpath.internal.patterns.NodeTest#SCORE_QNAME}, or
 *         {@link com.sun.org.apache.xpath.internal.patterns.NodeTest#SCORE_OTHER}.
 *
 * @throws javax.xml.transform.TransformerException
 */
protected final XObject executeRelativePathPattern(
        XPathContext xctxt, DTM dtm, int currentNode)
          throws javax.xml.transform.TransformerException
{

  XObject score = NodeTest.SCORE_NONE;
  int context = currentNode;
  DTMAxisTraverser traverser;

  traverser = dtm.getAxisTraverser(m_axis);

  for (int relative = traverser.first(context); DTM.NULL != relative;
          relative = traverser.next(context, relative))
  {
    try
    {
      xctxt.pushCurrentNode(relative);

      score = execute(xctxt);

      if (score != NodeTest.SCORE_NONE)
        break;
    }
    finally
    {
      xctxt.popCurrentNode();
    }
  }

  return score;
}
 

import com.sun.org.apache.xml.internal.dtm.DTMAxisTraverser; //导入依赖的package包/类
/**
 * Create a ChildTestIterator object.
 *
 * @param traverser Traverser that tells how the KeyIterator is to be handled.
 *
 * @throws javax.xml.transform.TransformerException
 */
public ChildTestIterator(DTMAxisTraverser traverser)
{

  super(null);

  m_traverser = traverser;
}
 

import com.sun.org.apache.xml.internal.dtm.DTMAxisTraverser; //导入依赖的package包/类
/**
 * Return the first node out of the nodeset, if this expression is
 * a nodeset expression.  This is the default implementation for
 * nodesets.
 * <p>WARNING: Do not mutate this class from this function!</p>
 * @param xctxt The XPath runtime context.
 * @return the first node out of the nodeset, or DTM.NULL.
 */
public int asNode(XPathContext xctxt)
  throws javax.xml.transform.TransformerException
{
  if(getPredicateCount() > 0)
    return super.asNode(xctxt);

  int current = xctxt.getCurrentNode();

  DTM dtm = xctxt.getDTM(current);
  DTMAxisTraverser traverser = dtm.getAxisTraverser(m_axis);

  String localName = getLocalName();
  String namespace = getNamespace();
  int what = m_whatToShow;

  // System.out.print(" (DescendantIterator) ");

  // System.out.println("what: ");
  // NodeTest.debugWhatToShow(what);
  if(DTMFilter.SHOW_ALL == what
     || localName == NodeTest.WILD
     || namespace == NodeTest.WILD)
  {
    return traverser.first(current);
  }
  else
  {
    int type = getNodeTypeTest(what);
    int extendedType = dtm.getExpandedTypeID(namespace, localName, type);
    return traverser.first(current, extendedType);
  }
}
 

import com.sun.org.apache.xml.internal.dtm.DTMAxisTraverser; //导入依赖的package包/类
public DTMAxisTraverser getAxisTraverser(final int axis)
{
    return null;
}
 

import com.sun.org.apache.xml.internal.dtm.DTMAxisTraverser; //导入依赖的package包/类
/**
 * This returns a stateless "traverser", that can navigate over an
 * XPath axis, though not in document order.
 *
 * @param axis One of Axes.ANCESTORORSELF, etc.
 *
 * @return A DTMAxisIterator, or null if the given axis isn't supported.
 */
public DTMAxisTraverser getAxisTraverser(final int axis)
{
  return null;
}