Find Node : DOM Node « XML « Java






Find Node

   


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import java.io.File;

import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;

import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.NamedNodeMap;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;

/**
 * 
 * @author Abey Mullassery
 * 
 */


public class Main {


  public static Node findNode(
      Node root,
      String elementName,
      boolean deep,
      boolean elementsOnly) {
      //Check to see if root has any children if not return null
      if (!(root.hasChildNodes()))
        return null;

      //Root has children, so continue searching for them
      Node matchingNode = null;
      String nodeName = null;
      Node child = null;

      NodeList childNodes = root.getChildNodes();
      int noChildren = childNodes.getLength();
      for (int i = 0; i < noChildren; i++) {
        if (matchingNode == null) {
          child = childNodes.item(i);
          nodeName = child.getNodeName();
          if ((nodeName != null) & (nodeName.equals(elementName)))
            return child;
          if (deep)
            matchingNode =
              findNode(child, elementName, deep, elementsOnly);
        } else
          break;
      }

      if (!elementsOnly) {
        NamedNodeMap childAttrs = root.getAttributes();
        noChildren = childAttrs.getLength();
        for (int i = 0; i < noChildren; i++) {
          if (matchingNode == null) {
            child = childAttrs.item(i);
            nodeName = child.getNodeName();
            if ((nodeName != null) & (nodeName.equals(elementName)))
              return child;
          } else
            break;
        }
      }
      return matchingNode;
    }

}

   
    
    
  








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