crashanalysis/crashanalyser/com.nokia.s60tools.crashanalyser/src/com/nokia/s60tools/crashanalyser/model/XmlUtils.java
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     1 /*
       
     2 * Copyright (c) 2008 Nokia Corporation and/or its subsidiary(-ies). 
       
     3 * All rights reserved.
       
     4 * This component and the accompanying materials are made available
       
     5 * under the terms of "Eclipse Public License v1.0"
       
     6 * which accompanies this distribution, and is available
       
     7 * at the URL "http://www.eclipse.org/legal/epl-v10.html".
       
     8 *
       
     9 * Initial Contributors:
       
    10 * Nokia Corporation - initial contribution.
       
    11 *
       
    12 * Contributors:
       
    13 *
       
    14 * Description:
       
    15 *
       
    16 */
       
    17 
       
    18 package com.nokia.s60tools.crashanalyser.model;
       
    19 
       
    20 import org.w3c.dom.*;
       
    21 
       
    22 /**
       
    23  * Utility class for XML handling 
       
    24  *
       
    25  */
       
    26 public final class XmlUtils {
       
    27 	private XmlUtils() {
       
    28 		// not meant to be initialized
       
    29 	}
       
    30 	
       
    31 	/**
       
    32 	 * Returns the value of given tagName under given element.
       
    33 	 * 
       
    34 	 * E.g.
       
    35 	 * <ele>
       
    36 	 * 	<tagName>MyValue</tagName>
       
    37 	 * </ele>
       
    38 	 * 
       
    39 	 * MyValue is returned in the above case.
       
    40 	 * 
       
    41 	 * @param ele xml element under which the tagName should be found
       
    42 	 * @param tagName tag name of the tag which value is read
       
    43 	 * @return the value of given tagName under given element.
       
    44 	 */
       
    45 	public static String getTextValue(Element ele, String tagName) {
       
    46 		String textVal = null;
       
    47 
       
    48 		try {
       
    49 			NodeList nl = ele.getElementsByTagName(tagName);
       
    50 			if(nl != null && nl.getLength() > 0) {
       
    51 				Element el = (Element)nl.item(0);
       
    52 				Node firstChild = el.getFirstChild();
       
    53 				if (firstChild != null)
       
    54 					textVal = firstChild.getNodeValue();
       
    55 			}
       
    56 		} catch (Exception e) {
       
    57 			e.printStackTrace();
       
    58 		}
       
    59 
       
    60 		return textVal;
       
    61 	}
       
    62 	
       
    63 	/**
       
    64 	 * Returns the value of given node
       
    65 	 * @param node node which value is to be returned
       
    66 	 * @return the value of given node
       
    67 	 */
       
    68 	public static String getNodeValue(Node node) {
       
    69 		String retval = "";
       
    70 		try {
       
    71 			Node firstChild = node.getFirstChild();
       
    72 			if (firstChild != null)
       
    73 				retval = firstChild.getNodeValue();
       
    74 		} catch (Exception e) { 
       
    75 			return "";
       
    76 		}
       
    77 		return retval;
       
    78 	}	
       
    79 	
       
    80 	/**
       
    81 	 * Checks whether given xml element contains a node of given name
       
    82 	 * @param ele xml element
       
    83 	 * @param tagName name of the node to be found
       
    84 	 * @return true if node is found under xml element, false if not
       
    85 	 */
       
    86 	public static boolean containsNode(Element ele, String tagName) {
       
    87 		try {
       
    88 			NodeList nl = ele.getElementsByTagName(tagName);
       
    89 			if(nl != null && nl.getLength() > 0) {
       
    90 				return true;
       
    91 			}
       
    92 		} catch (Exception e) {
       
    93 			e.printStackTrace();
       
    94 		}
       
    95 		
       
    96 		return false;
       
    97 	}
       
    98 }