Getting an error while changing a tag in an XML file

Question

Hi,
When I am trying to replace the existing XML tag with other one I am getting the following exception:
org.w3c.dom.DOMException: NOT_FOUND_ERR: An attempt is made to reference a node in a context where it does not exist.
at org.apache.xerces.dom.ParentNode.internalInsertBefore(Unknown Source)
at org.apache.xerces.dom.ParentNode.replaceChild(Unknown Source)
at org.apache.xerces.dom.CoreDocumentImpl.replaceChild(Unknown Source)
at com.Replace_Tag.replaceNode(Replace_Tag.java:97)
at com.Replace_Tag.processRequest(Replace_Tag.java:39)
at com.Replace_Tag.doGet(Replace_Tag.java:56)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:690)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.netbeans.modules.web.monitor.server.MonitorFilter.doFilter(MonitorFilter.java:368)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:230)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:104)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:261)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:581)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
at java.lang.Thread.run(Thread.java:619)
The following is the code I am using :
public void replaceNode() throws Exception{
        DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
        DocumentBuilder db = dbf.newDocumentBuilder();
        Document doc = db.parse("file:/C:/Documents and Settings/srikanth.d.KNOAHSOFT/Desktop/Linechart.jrxml");
        Element root = doc.getDocumentElement();
        Element newElement = doc.createElement("stackedBarchart");
        NodeList oldList = root.getElementsByTagName("lineChart");
        int length = oldList.getLength();
        System.out.println("length::"+length);
        for(int i=0;i<length;i++)
            Node oldNode = oldList.item(i);
            NodeList nl = doc.getChildNodes();
newElement.getTagName().toString());                   
(i).getNodeName().toString());
            doc.replaceChild((Node)newElement, oldNode);           
Can anybody help me in this regard...
Thanks and Regards
DNV Srikanth

Answer 1

i am posting the xml file also :
<?xml version="1.0" encoding="UTF-8"  ?>
<!-- Created with iReport - A designer for JasperReports -->
<!DOCTYPE jasperReport PUBLIC "//JasperReports//DTD Report Design//EN" "http://jasperreports.sourceforge.net/dtds/jasperreport.dtd">
<jasperReport
           name="Line chart"
           columnCount="1"
           printOrder="Vertical"
           orientation="Portrait"
           pageWidth="396"
           pageHeight="842"
           columnWidth="396"
           columnSpacing="0"
           leftMargin="0"
           rightMargin="0"
           topMargin="0"
           bottomMargin="0"
           whenNoDataType="NoPages"
           isTitleNewPage="false"
           isSummaryNewPage="false">
     <property name="ireport.scriptlethandling" value="2" />
     <property name="ireport.encoding" value="UTF-8" />
     <import value="java.util.*" />
     <import value="net.sf.jasperreports.engine.*" />
     <import value="net.sf.jasperreports.engine.data.*" />
     <queryString><![CDATA[select * from evalsubcomparison where qacount1 between 70.0 and 75.0]]></queryString>
     <field name="EmpId" class="java.lang.Double"/>
     <field name="Empname" class="java.lang.String"/>
     <field name="BaseEmpId" class="java.lang.Double"/>
     <field name="QACount1" class="java.lang.Double"/>
     <field name="WeekId1" class="java.lang.String"/>
     <field name="QACount2" class="java.lang.Double"/>
     <field name="WeekId" class="java.lang.String"/>
     <field name="QACount3" class="java.lang.Double"/>
     <field name="WeekId3" class="java.lang.String"/>
     <field name="QACount4" class="java.lang.Double"/>
     <field name="WeekId4" class="java.lang.String"/>
     <field name="level" class="java.lang.Double"/>
          <background>
               <band height="0"  isSplitAllowed="true" >
               </band>
          </background>
          <title>
               <band height="0"  isSplitAllowed="true" >
               </band>
          </title>
          <pageHeader>
               <band height="0"  isSplitAllowed="true" >
               </band>
          </pageHeader>
          <columnHeader>
               <band height="0"  isSplitAllowed="true" >
               </band>
          </columnHeader>
          <detail>
               <band height="0"  isSplitAllowed="true" >
               </band>
          </detail>
          <columnFooter>
               <band height="0"  isSplitAllowed="true" >
               </band>
          </columnFooter>
          <pageFooter>
               <band height="0"  isSplitAllowed="true" >
               </band>
          </pageFooter>
          <summary>
               <band height="301"  isSplitAllowed="true" >
                    <lineChart>
                         <chart  hyperlinkTarget="Self" >
                         <reportElement
                              mode="Opaque"
                              x="0"
                              y="0"
                              width="390"
                              height="300"
                              backcolor="#FFFFFF"
                              key="element-1"/>
                         <box topBorder="None" topBorderColor="#000000" leftBorder="None" leftBorderColor="#000000" rightBorder="None" rightBorderColor="#000000" bottomBorder="None" bottomBorderColor="#000000"/>
                              <chartLegend textColor="#000000" backgroundColor="#FFFFFF" >
                         <font fontName="Times New Roman" pdfFontName="Helvetica" size="10" isBold="false" isItalic="false" isUnderline="false" isStrikeThrough="false" isPdfEmbedded="false" pdfEncoding="Cp1252"/>
                         </chartLegend>
                         </chart>
                         <categoryDataset>
                              <dataset >
                              </dataset>
                              <categorySeries>
                                   <seriesExpression><![CDATA["WE "+$F{WeekId1}]]></seriesExpression>
                                   <categoryExpression><![CDATA[$F{Empname}]]></categoryExpression>
                                   <valueExpression><![CDATA[$F{QACount1}]]></valueExpression>
                    <itemHyperlink >
                    </itemHyperlink>
                              </categorySeries>
                              <categorySeries>
                                   <seriesExpression><![CDATA["WE "+$F{WeekId}]]></seriesExpression>
                                   <categoryExpression><![CDATA[$F{Empname}]]></categoryExpression>
                                   <valueExpression><![CDATA[$F{QACount2}]]></valueExpression>
                    <itemHyperlink >
                    </itemHyperlink>
                              </categorySeries>
                              <categorySeries>
                                   <seriesExpression><![CDATA["WE "+$F{WeekId3}]]></seriesExpression>
                                   <categoryExpression><![CDATA[$F{Empname}]]></categoryExpression>
                                   <valueExpression><![CDATA[$F{QACount3}]]></valueExpression>
                    <itemHyperlink >
                    </itemHyperlink>
                              </categorySeries>
                              <categorySeries>
                                   <seriesExpression><![CDATA["WE "+$F{WeekId4}]]></seriesExpression>
                                   <categoryExpression><![CDATA[$F{Empname}]]></categoryExpression>
                                   <valueExpression><![CDATA[$F{QACount4}]]></valueExpression>
                    <itemHyperlink >
                    </itemHyperlink>
                              </categorySeries>
                         </categoryDataset>
                         <linePlot >
                              <plot backcolor="#FFFFFF" />
                              <categoryAxisFormat>
                                   <axisFormat >
                                   </axisFormat>
                              </categoryAxisFormat>
                         <valueAxisLabelExpression><![CDATA["No. of Evaluations"]]></valueAxisLabelExpression>
                              <valueAxisFormat>
                                   <axisFormat >
                                        <labelFont>
                         <font fontName="Serif" pdfFontName="Helvetica" size="14" isBold="false" isItalic="true" isUnderline="false" isStrikeThrough="false" isPdfEmbedded="false" pdfEncoding="Cp1252"/>
                                        </labelFont>
                                        <tickLabelFont>
                                        </tickLabelFont>
                                   </axisFormat>
                              </valueAxisFormat>
                         </linePlot>
                    </lineChart>
               </band>
          </summary>
</jasperReport>can anybody pls help me in this regard......