Java DTM.getFirstChild方法代码示例

import org.apache.xml.dtm.DTM; //导入方法依赖的package包/类
/**
 * Given a result tree fragment, walk the tree and
 * output it to the SerializationHandler.
 *
 * @param obj Result tree fragment object
 * @param support XPath context for the result tree fragment
 *
 * @throws org.xml.sax.SAXException
 */
public static void outputResultTreeFragment(
    SerializationHandler handler,
    XObject obj,
    XPathContext support)
    throws org.xml.sax.SAXException
{

    int doc = obj.rtf();
    DTM dtm = support.getDTM(doc);

    if (null != dtm)
    {
        for (int n = dtm.getFirstChild(doc);
            DTM.NULL != n;
            n = dtm.getNextSibling(n))
        {
            handler.flushPending();

            // I think. . . . This used to have a (true) arg
            // to flush prefixes, will that cause problems ???
            if (dtm.getNodeType(n) == DTM.ELEMENT_NODE
                    && dtm.getNamespaceURI(n) == null)
                handler.startPrefixMapping("", "");
            dtm.dispatchToEvents(n, handler);
        }
    }
}
 

import org.apache.xml.dtm.DTM; //导入方法依赖的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
{
  int current = xctxt.getCurrentNode();
  
  DTM dtm = xctxt.getDTM(current);
  
  return dtm.getFirstChild(current);
}
 

import org.apache.xml.dtm.DTM; //导入方法依赖的package包/类
/**
   * Execute the function.  The function must return
   * a valid object.
   * @param xctxt The current execution context.
   * @return A valid XObject.
   *
   * @throws javax.xml.transform.TransformerException
   */
  public XObject execute(XPathContext xctxt) throws javax.xml.transform.TransformerException
  {

    int whereNode = getArg0AsNode(xctxt);
    String fileLocation = null;

    if (DTM.NULL != whereNode)
    {
      DTM dtm = xctxt.getDTM(whereNode);
      
      // %REVIEW%
      if (DTM.DOCUMENT_FRAGMENT_NODE ==  dtm.getNodeType(whereNode))
      {
        whereNode = dtm.getFirstChild(whereNode);
      }

      if (DTM.NULL != whereNode)
      {        
        fileLocation = dtm.getDocumentBaseURI();
//        int owner = dtm.getDocument();
//        fileLocation = xctxt.getSourceTreeManager().findURIFromDoc(owner);
      }
    }

    return new XString((null != fileLocation) ? fileLocation : "");
  }
 

import org.apache.xml.dtm.DTM; //导入方法依赖的package包/类
/**
 * Public constructor: Create a NodeList to support
 * DTMNodeProxy.getChildren().
 *
 * Unfortunately AxisIterators and DTMIterators don't share an API,
 * so I can't use the existing Axis.CHILD iterator. Rather than
 * create Yet Another Class, let's set up a special case of this
 * one.
 *
 * @param parentDTM The DTM containing this node
 * @param parentHandle DTM node-handle integer
 *
 */
public DTMChildIterNodeList(DTM parentDTM,int parentHandle) {
    m_parentDTM=parentDTM;
    m_firstChild=parentDTM.getFirstChild(parentHandle);
}