nodewalker.java

来自「webwork source」· Java 代码 · 共 54 行

/*
 * WebWork, Web Application Framework
 *
 * Distributable under Apache license.
 * See terms of license at opensource.org
 */
package webwork.view.xslt.SAXAdapter.dom;

import org.w3c.dom.NamedNodeMap;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.xml.sax.ContentHandler;
import org.xml.sax.SAXException;
import org.xml.sax.helpers.AttributesImpl;
import webwork.view.xslt.SAXAdapter.AbstractWalker;
import webwork.view.xslt.SAXAdapter.XMLWalker;

import java.util.List;

public class NodeWalker extends AbstractWalker
{
   public void doWalk(XMLWalker rootWalker, ContentHandler contentHandler, Object value, String attributeName, List walkedInstances) throws SAXException
   {
      Node node = (Node) value;

      NamedNodeMap attributes = node.getAttributes();
      AttributesImpl saxAttributes = new AttributesImpl();
      if (attributes != null)
      {
         for (int i = 0; i < attributes.getLength(); i++)
         {
            Node current = attributes.item(i);
            saxAttributes.addAttribute("", current.getNodeName(), "", "CDATA", current.getNodeValue());
         }
      }
      contentHandler.startElement("", attributeName, "", saxAttributes);
      NodeList children = node.getChildNodes();
      if (children != null)
      {
         for (int i = 0; i < children.getLength(); i++)
         {
            rootWalker.walk(contentHandler, children.item(i), children.item(i).getNodeName(), walkedInstances);
         }
      }

      contentHandler.endElement("", attributeName, "");
   }

   public final Class getWalkedType()
   {
      return Node.class;
   }
}