/*
 * Created on 24/03/2005
 */
package DMS;

import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.DocumentBuilder;
import org.w3c.dom.Document;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import java.util.Vector;
import java.io.InputStream;

/**
 * @author mtayler
 */
public class XMLParser {

	public XMLParser() {
		super();
		
		
	}

	public static Document getDocument(String fileName){
		Document doc = null;
		try {	
		    DocumentBuilder docBuilder = DocumentBuilderFactory.newInstance().newDocumentBuilder();
			InputStream is = DMSUtils.getResourceAsStream(fileName);
			try {
				doc = docBuilder.parse(is);
		    } finally {
		      is.close();
		    }
		} catch (Exception e) { 
			e.printStackTrace();			
		}	
		
		return doc;
	}


	public static Node getRootNode(String fileName){
		Node root = null;
		try {			
			Document doc = getDocument(fileName);
			root = doc.getDocumentElement();			
		} catch (Exception e) { 
			e.printStackTrace();	
		}	
		return root;
	}
	
	
	public static Node findNode(Node root, String nodeName) {
		if (root!=null) {
			NodeList list = root.getChildNodes();
			
			if (list!=null)
			for (int i=0;i<list.getLength();i++) {
				Node item = list.item(i);
				if (item!=null && item.getNodeName().toUpperCase().equals(nodeName.toUpperCase())) {
					return item; 
				}
				
			}				
		}
		return null; //return null if no node with the given name is found 
	}
	
	public static Vector findNodeList(Node root, String nodeName) {
		Vector vector = new Vector();			
		if (root!=null) {		
			NodeList list = root.getChildNodes();
					
			if (list!=null)
			for (int i=0;i<list.getLength();i++) {
				Node item = list.item(i);
				if (item!=null && item.getNodeName().toUpperCase().equals(nodeName.toUpperCase())) {
					vector.add(item);
				}		
			}			
		}
		return vector;		
	}
	

	public static String findNodeValue(Node root, String nodeName) {
		Node retNode = findNode(root, nodeName);
		if (retNode!=null) {
			Node child = retNode.getFirstChild();
			if (child!=null) return child.getNodeValue();
		}
		return "";  
	}
		 
	public static boolean findNodeValueBool(Node root, String nodeName) {
		String value = DMSUtils.NVL(findNodeValue(root, nodeName),"false");
		return value.toLowerCase().trim().equals("true");
	}

}