import com.sun.org.apache.xml.internal.dtm.DTMDOMException; //导入依赖的package包/类
/** This is a bit of a problem in DTM, since a DTM may be a Document
 * Fragment and hence not have a clear-cut Document Element. We can
 * make it work in the well-formed cases but would that be confusing for others?
 *
 *
 * @see org.w3c.dom.Document
 */
@Override
public final Element getDocumentElement()
{
              int dochandle=dtm.getDocument();
              int elementhandle=DTM.NULL;
              for(int kidhandle=dtm.getFirstChild(dochandle);
                              kidhandle!=DTM.NULL;
                              kidhandle=dtm.getNextSibling(kidhandle))
              {
                      switch(dtm.getNodeType(kidhandle))
                      {
                      case Node.ELEMENT_NODE:
                              if(elementhandle!=DTM.NULL)
                              {
                                      elementhandle=DTM.NULL; // More than one; ill-formed.
                                      kidhandle=dtm.getLastChild(dochandle); // End loop
                              }
                              else
                                      elementhandle=kidhandle;
                              break;

                      // These are harmless; document is still wellformed
                      case Node.COMMENT_NODE:
                      case Node.PROCESSING_INSTRUCTION_NODE:
                      case Node.DOCUMENT_TYPE_NODE:
                              break;

                      default:
                              elementhandle=DTM.NULL; // ill-formed
                              kidhandle=dtm.getLastChild(dochandle); // End loop
                              break;
                      }
              }
              if(elementhandle==DTM.NULL)
                      throw new DTMDOMException(DOMException.NOT_SUPPORTED_ERR);
              else
                      return (Element)(dtm.getNode(elementhandle));
}
 

import com.sun.org.apache.xml.internal.dtm.DTMDOMException; //导入依赖的package包/类
/** @return the next node in the set and advance the position of the
 * iterator in the set.
 *
 * @throws DOMException - INVALID_STATE_ERR Raised if this method is
 * called after the detach method was invoked.
 *  */
public Node nextNode() throws DOMException
  {
    if(!valid)
      throw new DTMDOMException(DOMException.INVALID_STATE_ERR);

    int handle=dtm_iter.nextNode();
    if (handle==DTM.NULL)
      return null;
    return dtm_iter.getDTM(handle).getNode(handle);
  }
 

import com.sun.org.apache.xml.internal.dtm.DTMDOMException; //导入依赖的package包/类
/** @return the next previous in the set and advance the position of the
 * iterator in the set.
 *
 * @throws DOMException - INVALID_STATE_ERR Raised if this method is
 * called after the detach method was invoked.
 *  */
public Node previousNode()
  {
    if(!valid)
      throw new DTMDOMException(DOMException.INVALID_STATE_ERR);

    int handle=dtm_iter.previousNode();
    if (handle==DTM.NULL)
      return null;
    return dtm_iter.getDTM(handle).getNode(handle);
  }
 

import com.sun.org.apache.xml.internal.dtm.DTMDOMException; //导入依赖的package包/类
/**
 *
 *
 * @see org.w3c.dom.Document
 */
@Override
public final DocumentFragment createDocumentFragment()
{
  throw new DTMDOMException(DOMException.NOT_SUPPORTED_ERR);
}
 

import com.sun.org.apache.xml.internal.dtm.DTMDOMException; //导入依赖的package包/类
/** @see org.w3c.dom.Element */
@Override
public final void normalize()
{
  throw new DTMDOMException(DOMException.NOT_SUPPORTED_ERR);
}
 

import com.sun.org.apache.xml.internal.dtm.DTMDOMException; //导入依赖的package包/类
/**
 *
 * @param value
 * @see org.w3c.dom.Attr
 */
@Override
public final void setValue(String value)
{
  throw new DTMDOMException(DOMException.NOT_SUPPORTED_ERR);
}
 

import com.sun.org.apache.xml.internal.dtm.DTMDOMException; //导入依赖的package包/类
@Override
public DocumentType createDocumentType(String qualifiedName,String publicId, String systemId)
{
  throw new DTMDOMException(DOMException.NOT_SUPPORTED_ERR);
}
 

import com.sun.org.apache.xml.internal.dtm.DTMDOMException; //导入依赖的package包/类
@Override
public Document createDocument(String namespaceURI,String qualfiedName,DocumentType doctype)
{
  // Could create a DTM... but why, when it'd have to be permanantly empty?
  throw new DTMDOMException(DOMException.NOT_SUPPORTED_ERR);
}