Again and Again. Set Value to node of XML document

Question

I've read many topics about how to set value in XML, but nothing works. Please, help
My xml file:
<TempEditData>
     <parameter userId="testUserId">
          <connectUrl>http://cognoslink</connectUrl>
          <connectUser>cognosTestUser</connectUser>
          <connectPwd>cognosPassword</connectPwd>
          <connectNamespace>cognosNamespace</connectNamespace>
          <reportStorePath>reportStorePath</reportStorePath>
          <reportUrlPath>reportUrlPath</reportUrlPath>
          <reportLifeLength>reportLifeLength</reportLifeLength>
     </parameter>
</TempEditData>My code:
private static void storeChartDataBeanParameters( String inputUserId) throws Exception{
          boolean isUserIdInFile = false;
          //create object
          DocumentBuilderFactory docBuilderFactory = DocumentBuilderFactory.newInstance();
        DocumentBuilder docBuilder = docBuilderFactory.newDocumentBuilder();
        Document doc = docBuilder.parse (new File("src/tempCognosEditData.xml"));
        //normalize
        doc.getDocumentElement().normalize ();
        //get all Nodes
        NodeList listOfParameters = doc.getElementsByTagName("parameter");
        for(int i=0; i< listOfParameters.getLength(); i++){
             Node firstParameterNode = listOfParameters.item(i);
             //if first element is NODE
            if(firstParameterNode.getNodeType() == Node.ELEMENT_NODE){
                Element firstParameterElement = (Element)firstParameterNode;
                String userId = firstParameterElement.getAttribute("userId");
                //if !inputUserId
                if(!inputUserId.equals(userId)){
                     continue;
                //if userId was found in file
                else{
                     isUserIdInFile = true;
                     System.out.println("((Element)firstParameterElement).getElementsByTagName('connectUrl').item(0).getNodeName = " + ((Element)firstParameterElement).getElementsByTagName("connectUrl").item(0).getNodeName());
                     System.out.println("((Element)firstParameterElement).getElementsByTagName('connectUrl').item(0).getNodeValue = " + ((Element)firstParameterElement).getElementsByTagName("connectUrl").item(0).getNodeValue());
                     ((Element)firstParameterElement).getElementsByTagName("connectUrl").item(0).appendChild(doc.createTextNode("dzfgsdfgsdgf"));
                     /*NodeList insideList = firstParameterElement.getElementsByTagName("connectUrl");
                     Element element = (Element)insideList.item(0);
                     System.out.println ( "element.getNodeName() = " + element.getNodeName() );
                     element.setNodeValue("new TT");
                     System.out.println ("element.getNodeValue() = " + element.getNodeValue() );
                     //element.appendChild(doc.createTextNode("rrr"));
                     NodeList nl = element.getChildNodes();
                     System.out.println ("nl.item(0).getFirstChild().getNodeValue() = " + nl.item(0).getFirstChild().getNodeValue());
                     nl.item(0).getFirstChild().appendChild(doc.createTextNode("rrr"));*/
                                break;
            }//if ELEMENT_NODE
        }//for go through all nodes
     }Edited by: Holod on 03.03.2008 8:58

Answer 1

So, the solution is pretty easy:
storeChartDataBeanParameters( String inputUserId) searches for nodes named "+parameter+" in xml file with attribute "+userDd+".
If method parameter equals to xml data, I perform some operations and save new data.
The only thing, that saveFile(Document doc) must be syncronized.
Two users can't write to fie at the same time.
[This link|http://www.aviransplace.com/2005/03/20/working-with-xml-files-in-java-using-dom/5/] helped me alot.
Also Dr. Clap posts in different topics brought evidence to my mind.
private static void storeChartDataBeanParameters( String inputUserId) throws Exception{
          //create object
          boolean isUserIdWasFound = false;
          DocumentBuilderFactory docBuilderFactory = DocumentBuilderFactory.newInstance();
        DocumentBuilder docBuilder = docBuilderFactory.newDocumentBuilder();
        Document doc = docBuilder.parse (new File("src/tempCognosEditData.xml"));
        //normalize
        doc.getDocumentElement().normalize ();
        //get all Nodes
        NodeList listOfParameters = doc.getElementsByTagName("parameter");
        for(int i=0; i< listOfParameters.getLength(); i++){
             Node firstParameterNode = listOfParameters.item(i);
             //if first element is NODE
            if(firstParameterNode.getNodeType() == Node.ELEMENT_NODE){
                Element firstParameterElement = (Element)firstParameterNode;
                String userId = firstParameterElement.getAttribute("userId");
                //if !inputUserId
                if(!inputUserId.equals(userId)){
                     continue;
                //if userId was found in file
                else{
                     isUserIdWasFound = true;
                     NodeList parameterNode = firstParameterElement.getElementsByTagName("connectUrl");
                     Element connectUrlElement = (Element)parameterNode.item(0);
                     System.out.println("connectUrlElement name = " + connectUrlElement.getNodeName());
                     System.out.println("connectUrlElement value = " + connectUrlElement.getNodeValue());
                     System.out.println("((Node)connectUrlElement) value = "+((Node)connectUrlElement).getNodeValue());
                     ((Node)connectUrlElement.getFirstChild()).setNodeValue("normalized");
                     saveFile(doc);
                     break;
            }//if ELEMENT_NODE
        }//for go through all nodes
     public static void main(String[] args) throws Exception{
          storeChartDataBeanParameters("testUserId");
     public static void saveFile(Document doc) throws Exception{
          Transformer transformer;
          transformer = TransformerFactory.newInstance().newTransformer();
          transformer.transform(new DOMSource(doc), new StreamResult(new File("src/tempCognosEditData.xml")));
     }Edited by: Holod on 03.03.2008 15:52