doc does not transform

Question

cisumma 0 Newbie Poster

11 Years Ago

Hello
I have a XML DB. I write the first element. I can not get the entries to (fragments) to
write to the Database. I know I do not have the error handler setup right. The error
stops the process on the transform. Is there some debugging techniques I could use
to understand why the fragments are not being appended. All the data is collected and in place. Thanks.

java.lang.NullPointerException
    at com.sun.org.apache.xml.internal.serializer.ToUnknownStream.characters(ToUnknownStream.java:342)















[code]

dom:

import java.io.*;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.transform.OutputKeys;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.stream.StreamResult;

import model.notes.reference.ReadXML;
import org.w3c.dom.*;
[/code]




















[code]
XML DB

<?xml version="1.0" encoding="utf-8"?><!DOCTYPE links [<!ELEMENT links (link)+><!ELEMENT link (linkName,linkPath,linkDesc,entryName,dbName,dbHome,entryFrame,entryTab,entryDesc,isEntryDir,isEntryFile,frameHome,tabHome,fileName,tabSelectedIndex,isFileTask,isTabTask,isFrameTask,dow,date,time,key)><!ATTLIST link action CDATA #REQUIRED><!ELEMENT linkName (#PCDATA)><!ELEMENT linkPath (#PCDATA)><!ELEMENT linkDesc (#PCDATA)><!ELEMENT entryName (#PCDATA)><!ELEMENT dbName (#PCDATA)><!ELEMENT dbHome (#PCDATA)><!ELEMENT entryFrame (#PCDATA)><!ELEMENT entryTab (#PCDATA)><!ELEMENT entryDesc (#PCDATA)><!ELEMENT isEntryDir (#PCDATA)><!ELEMENT isEntryFile (#PCDATA)><!ELEMENT frameHome (#PCDATA)><!ELEMENT tabHome (#PCDATA)><!ELEMENT fileName (#PCDATA)><!ELEMENT tabSelectedIndex (#PCDATA)><!ELEMENT isFileTask (#PCDATA)><!ELEMENT isTabTask (#PCDATA)><!ELEMENT isFrameTask (#PCDATA)><!ELEMENT dow (#PCDATA)><!ELEMENT date (#PCDATA)><!ELEMENT time (#PCDATA)><!ELEMENT key (#PCDATA)>]>
<links>
    <link action="meta">
        <linkName>system</linkName>
        <linkPath>C:\Users\Steves\.targetGuide\admin_\admin\Note Folder\bookmarkDB</linkPath>
        <linkDesc>system</linkDesc>
        <entryName>system</entryName>
        <dbName>system</dbName>
        <dbHome>system</dbHome>
        <entryFrame>system</entryFrame>
        <entryTab>system</entryTab>
        <entryDesc>system</entryDesc>
        <isEntryDir>system</isEntryDir>
        <isEntryFile>system</isEntryFile>
        <frameHome>system</frameHome>
        <tabHome>system</tabHome>
        <fileName>system</fileName>
        <tabSelectedIndex>system</tabSelectedIndex>
        <isFileTask>system</isFileTask>
        <isTabTask>system</isTabTask>
        <isFrameTask>system</isFrameTask>
        <dow>system</dow>
        <date>system</date>
        <time>system</time>
        <key>system</key>
    </link>
</links>
[/code]











[code]
error:
ERROR:  ''
ERROR:  ''
Feb 11, 2013 8:00:19 AM model.bookMark.BookMarkActions$4 run
SEVERE: null
javax.xml.transform.TransformerException: java.lang.NullPointerException
    at com.sun.org.apache.xalan.internal.xsltc.trax.TransformerImpl.transform(TransformerImpl.java:720)
    at com.sun.org.apache.xalan.internal.xsltc.trax.TransformerImpl.transform(TransformerImpl.java:317)
    at model.bookMark.WriteBookMarks.append(WriteBookMarks.java:443)
    at model.bookMark.ConnectBookMarkDAO.writeNewBookMark(ConnectBookMarkDAO.java:469)
    at model.bookMark.BookMarkActions$4.run(BookMarkActions.java:368)
    at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:251)
    at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:705)
    at java.awt.EventQueue.access$000(EventQueue.java:101)
    at java.awt.EventQueue$3.run(EventQueue.java:666)
    at java.awt.EventQueue$3.run(EventQueue.java:664)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
    at java.awt.EventQueue.dispatchEvent(EventQueue.java:675)
    at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:211)
    at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:128)
    at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:117)
    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:113)
    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:105)
    at java.awt.EventDispatchThread.run(EventDispatchThread.java:90)
Caused by: java.lang.NullPointerException
    at com.sun.org.apache.xml.internal.serializer.ToUnknownStream.characters(ToUnknownStream.java:342)
    at com.sun.org.apache.xalan.internal.xsltc.trax.DOM2TO.parse(DOM2TO.java:244)
    at com.sun.org.apache.xalan.internal.xsltc.trax.DOM2TO.parse(DOM2TO.java:230)
    at com.sun.org.apache.xalan.internal.xsltc.trax.DOM2TO.parse(DOM2TO.java:230)
    at com.sun.org.apache.xalan.internal.xsltc.trax.DOM2TO.parse(DOM2TO.java:230)
    at com.sun.org.apache.xalan.internal.xsltc.trax.DOM2TO.parse(DOM2TO.java:136)
    at com.sun.org.apache.xalan.internal.xsltc.trax.DOM2TO.parse(DOM2TO.java:98)
    at com.sun.org.apache.xalan.internal.xsltc.trax.TransformerImpl.transformIdentity(TransformerImpl.java:665)
    at com.sun.org.apache.xalan.internal.xsltc.trax.TransformerImpl.transform(TransformerImpl.java:711)
    ... 18 more
---------
java.lang.NullPointerException
    at com.sun.org.apache.xml.internal.serializer.ToUnknownStream.characters(ToUnknownStream.java:342)
    at com.sun.org.apache.xalan.internal.xsltc.trax.DOM2TO.parse(DOM2TO.java:244)
    at com.sun.org.apache.xalan.internal.xsltc.trax.DOM2TO.parse(DOM2TO.java:230)
    at com.sun.org.apache.xalan.internal.xsltc.trax.DOM2TO.parse(DOM2TO.java:230)
    at com.sun.org.apache.xalan.internal.xsltc.trax.DOM2TO.parse(DOM2TO.java:230)
    at com.sun.org.apache.xalan.internal.xsltc.trax.DOM2TO.parse(DOM2TO.java:136)
    at com.sun.org.apache.xalan.internal.xsltc.trax.DOM2TO.parse(DOM2TO.java:98)
    at com.sun.org.apache.xalan.internal.xsltc.trax.TransformerImpl.transformIdentity(TransformerImpl.java:665)
    at com.sun.org.apache.xalan.internal.xsltc.trax.TransformerImpl.transform(TransformerImpl.java:711)
    at com.sun.org.apache.xalan.internal.xsltc.trax.TransformerImpl.transform(TransformerImpl.java:317)
    at model.bookMark.WriteBookMarks.append(WriteBookMarks.java:443)
    at model.bookMark.ConnectBookMarkDAO.writeNewBookMark(ConnectBookMarkDAO.java:469)
    at model.bookMark.BookMarkActions$4.run(BookMarkActions.java:368)
    at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:251)
    at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:705)
    at java.awt.EventQueue.access$000(EventQueue.java:101)
    at java.awt.EventQueue$3.run(EventQueue.java:666)
    at java.awt.EventQueue$3.run(EventQueue.java:664)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
    at java.awt.EventQueue.dispatchEvent(EventQueue.java:675)
    at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:211)
    at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:128)
    at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:117)
    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:113)
    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:105)
    at java.awt.EventDispatchThread.run(EventDispatchThread.java:90)



[/code]













[code]

ReadXML.java

ublic Document readXML(String aSystemDir) {

         String M =(": in public Document readXML("+aSystemDir+") var: (String aSystemDir):\n");
        System.out.println(M);

        try {

            String systemDir = aSystemDir;
            //File f = new File(systemDir);
            DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
            DocumentBuilder db = dbf.newDocumentBuilder();
            db.setErrorHandler(new ReadXMLErrorHandler(System.err));
            dbf.setIgnoringComments(true);
            dbf.setIgnoringElementContentWhitespace(true);
            dbf.setValidating(true);
            dbf.setFeature("http://xml.org/sax/features/validation", true);
            db = null;
            db = dbf.newDocumentBuilder();
            //System.out.println("doc=null");
            doc = db.parse(new InputSource(systemDir));
            docType = doc.getDoctype();
            setDocType(docType);
            //create string from xml tree
            StringWriter sw = new StringWriter();
            StreamResult result = new StreamResult(sw);
            xmlString = result.getWriter().toString();
            setXmlString(xmlString);
            System.out.println(xmlString);

            setDocType(docType);
            setDoc(doc);
            //Element de = doc.getDocumentElement();
            root = doc.getDocumentElement();
            setRoot(root);
            rootName = root.getNodeName();
            setRootName(rootName);
            //@misc:
            System.out.println(C + M + AND + rootName + ": rootName:\n");
            //@misc:
            System.out.println(C + M + AND + root + ":  root = doc.getDocumentElement();:\n");
            //@misc:
            System.out.println(C + M + AND + docType + ": docType=doc.getDoctype();:\n");
            // ModelUtils.outputDom(doc);

        } catch (SAXException ex) {
            Logger.getLogger(ReadXML.class.getName()).log(Level.SEVERE, null, ex);
        } catch (IOException ex) {
            Logger.getLogger(ReadXML.class.getName()).log(Level.SEVERE, null, ex);
        } catch (ParserConfigurationException ex) {
            Logger.getLogger(ReadXML.class.getName()).log(Level.SEVERE, null, ex);
        }
        return doc;
    }

[/code]






























[code]
write:

  public void append(String systemDir, String action) throws TransformerConfigurationException, TransformerException, ParserConfigurationException, SAXException, IOException {

        String M = ": in  public  void append(" + systemDir + c + action + ") var: String systemDir,String action<-- \n";
        System.out.println(M);


        ReadXML read = new ReadXML();
         doc = read.readXML(systemDir);
        setDoc(doc);
        docType = doc.getDoctype();
        setDocType(docType);
        root = (Element) doc.getDocumentElement();
        setRoot(root);


        setDoc(doc);
        addFragment(doc);//doc, linkName, linkPath, linkDesc, action


  //////////////////
        //Output the XML
        //set up a transformer
        TransformerFactory transfac = TransformerFactory.newInstance();
        Transformer trans = transfac.newTransformer();
        trans.setOutputProperty(OutputKeys.OMIT_XML_DECLARATION, "yes");
        trans.setOutputProperty(OutputKeys.INDENT, "yes");
        //create string from xml tree
        StringWriter sw = new StringWriter();
        StreamResult result = new StreamResult(sw);
        DOMSource source = new DOMSource(doc);
        trans.transform(source, result);
        xmlString = result.getWriter().toString();
        setXmlString(xmlString);
        System.out.println(xmlString);
        //print xml


        setDoc(doc);
        System.out.println("Here's the  the original Document : It does nest the new link \n\n" + xmlString);
        sysOut(systemDir);
        writeAppend(systemDir, action);



    }

    private void writeAppend(String systemDir, String action) {

        String M = (": in private  void writeAppend(" + systemDir + c + action + ") var: (String systemDir,String action):\n");
        System.out.println(M);

        setAction(action);


        try {
            OutputStream fout = new FileOutputStream(systemDir);
            OutputStream bout = new BufferedOutputStream(fout);
            OutputStreamWriter out = new OutputStreamWriter(bout, "8859_1");
            out.write(xmlDeclaration);
            out.write("<!DOCTYPE links [");
            out.write("<!ELEMENT links (link)+>");
            out.write("<!ELEMENT link (linkName,linkPath,linkDesc,entryName,dbName,dbHome,entryFrame,entryTab,entryDesc,isEntryDir,isEntryFile,frameHome,tabHome,fileName,tabSelectedIndex,isFileTask,isTabTask,isFrameTask,dow,date,time,key)>");
            out.write("<!ATTLIST link action CDATA #REQUIRED>");
            out.write("<!ELEMENT linkName (#PCDATA)>");
            out.write("<!ELEMENT linkPath (#PCDATA)>");
            out.write("<!ELEMENT linkDesc (#PCDATA)>");
            out.write("<!ELEMENT entryName (#PCDATA)>");
            out.write("<!ELEMENT dbName (#PCDATA)>");
            out.write("<!ELEMENT dbHome (#PCDATA)>");
            out.write("<!ELEMENT entryFrame (#PCDATA)>");
            out.write("<!ELEMENT entryTab (#PCDATA)>");
            out.write("<!ELEMENT entryDesc (#PCDATA)>");
            out.write("<!ELEMENT isEntryDir (#PCDATA)>");
            out.write("<!ELEMENT isEntryFile (#PCDATA)>");
            out.write("<!ELEMENT frameHome (#PCDATA)>");
            out.write("<!ELEMENT tabHome (#PCDATA)>");
            out.write("<!ELEMENT fileName (#PCDATA)>");
            out.write("<!ELEMENT tabSelectedIndex (#PCDATA)>");
            out.write("<!ELEMENT isFileTask (#PCDATA)>");
            out.write("<!ELEMENT isTabTask (#PCDATA)>");
            out.write("<!ELEMENT isFrameTask (#PCDATA)>");
            out.write("<!ELEMENT dow (#PCDATA)>");
            out.write("<!ELEMENT date (#PCDATA)>");
            out.write("<!ELEMENT time (#PCDATA)>");
            out.write("<!ELEMENT key (#PCDATA)>");
            out.write("]>");
            out.write(xmlString);
            out.flush(); //Don't forget to flush!
            out.close();

            //@misc:
            System.out.println(xmlString + " xmlString  \n");

            out.flush();
            out.close();
        } catch (UnsupportedEncodingException e) {
            System.out.println("This VM does not support the Latin-1 character set.");
        } catch (IOException e) {
            System.out.println(e.getMessage());
        }

    }






  private void addFragment(Document doc) {

         String M = (": in  public void setupXML(" +doc.getXmlVersion()+ ") var: (Document doc, ):\n");
        System.out.println(M);


        Element link;

        root = doc.getDocumentElement();

        DocumentFragment fragment = doc.createDocumentFragment();
        link = makeLinkNode();
        fragment.appendChild(link);
        root.appendChild(fragment);
        setDoc(doc);



    }






private Element makeLinkNode() {

        String M = (": in  private  Element makeLinkNode() var: (:\n");
        System.out.println(M);

        Element nameNode = doc.createElement(linkNameElement);
        Text nameTextNode = doc.createTextNode(linkName);
        nameNode.appendChild(nameTextNode);

        Element urlNode = doc.createElement(linkPathElement);
        Text urlTextNode = doc.createTextNode(linkPath);
        urlNode.appendChild(urlTextNode);

        Element descNode = doc.createElement(linkDescElement);
        Text descTextNode = doc.createTextNode(linkDesc);
        descNode.appendChild(descTextNode);

        Element entryNameNode = doc.createElement(entryNameElement);
        Text entryNameTextNode = doc.createTextNode(entryName);
        entryNameNode.appendChild(entryNameTextNode);

        Element dbNameNode = doc.createElement(dbNameElement);
        Text dbNameTextNode = doc.createTextNode(dbName);
        dbNameNode.appendChild(dbNameTextNode);

        Element dbHomeNode = doc.createElement(dbHomeElement);
        Text dbHomeTextNode = doc.createTextNode(dbHome);
        dbHomeNode.appendChild(dbHomeTextNode);

        Element entryFrameNode = doc.createElement(entryFrameElement);
        Text entryFrameTextNode = doc.createTextNode(entryFrame);
        entryFrameNode.appendChild(entryFrameTextNode);

        Element entryTabNode = doc.createElement(entryTabElement);
        Text entryTabTextNode = doc.createTextNode(entryTab);
        entryTabNode.appendChild(entryTabTextNode);

        Element entryDescNode = doc.createElement(entryDescElement);
        Text entryDescTextNode = doc.createTextNode(entryDesc);
        entryDescNode.appendChild(entryDescTextNode);

        Element isEntryDirNode = doc.createElement(isEntryDirElement);
        Text isEntryDirTextNode = doc.createTextNode(isEntryDir);
        isEntryDirNode.appendChild(isEntryDirTextNode);

        Element isEntryFileNode = doc.createElement(isEntryFileElement);
        Text isEntryFileTextNode = doc.createTextNode(isEntryFile);
        isEntryFileNode.appendChild(isEntryFileTextNode);

        Element frameHomeNode = doc.createElement(frameHomeElement);
        Text frameHomeTextNode = doc.createTextNode(frameHome);
        frameHomeNode.appendChild(frameHomeTextNode);

        Element tabHomeNode = doc.createElement(tabHomeElement);
        Text tabHomeTextNode = doc.createTextNode(tabHome);
        tabHomeNode.appendChild(tabHomeTextNode);

        Element fileNameNode = doc.createElement(fileNameElement);
        Text fileNameTextNode = doc.createTextNode(fileName);
        fileNameNode.appendChild(fileNameTextNode);

        Element tabSelectedIndexNode = doc.createElement(tabSelectedIndexElement);
        Text tabSelectedIndexTextNode = doc.createTextNode(tabSelectedIndex);
        tabSelectedIndexNode.appendChild(tabSelectedIndexTextNode);

        Element isFileTaskNode = doc.createElement(isFileTaskElement);
        Text isFileTaskTextNode = doc.createTextNode(isFileTask);
        isFileTaskNode.appendChild(isFileTaskTextNode);

        Element isTabTaskNode = doc.createElement(isTabTaskElement);
        Text isTabTaskTextNode = doc.createTextNode(isTabTask);
        isTabTaskNode.appendChild(isTabTaskTextNode);

        Element isFrameTaskNode = doc.createElement(isFrameTaskElement);
        Text isFrameTaskTextNode = doc.createTextNode(isFrameTask);
        isFrameTaskNode.appendChild(isFrameTaskTextNode);

        Element dowNode = doc.createElement(dowElement);
        Text dowTextNode = doc.createTextNode(dow);
        dowNode.appendChild(dowTextNode);

        Element dateNode = doc.createElement(dateElement);
        Text dateTextNode = doc.createTextNode(date);
        dateNode.appendChild(dateTextNode);

        Element timeNode = doc.createElement(timeElement);
        Text timeTextNode = doc.createTextNode(time);
        timeNode.appendChild(timeTextNode);

        Element keyNode = doc.createElement(keyElement);
        Text keyTextNode = doc.createTextNode(key);
        keyNode.appendChild(keyTextNode);

        Element linkNode = doc.createElement(linkElement);
        linkNode.setAttribute("action", action);

        linkNode.appendChild(nameNode);
        linkNode.appendChild(urlNode);
        linkNode.appendChild(descNode);
        linkNode.appendChild(entryNameNode);
        linkNode.appendChild(dbNameNode);
        linkNode.appendChild(dbHomeNode);
        linkNode.appendChild(entryFrameNode);
        linkNode.appendChild(entryTabNode);
        linkNode.appendChild(entryDescNode);
        linkNode.appendChild(isEntryDirNode);
        linkNode.appendChild(isEntryFileNode);
        linkNode.appendChild(frameHomeNode);
        linkNode.appendChild(tabHomeNode);
        linkNode.appendChild(fileNameNode);
        linkNode.appendChild(tabSelectedIndexNode);
        linkNode.appendChild(isFileTaskNode);
        linkNode.appendChild(isTabTaskNode);
        linkNode.appendChild(isFrameTaskNode);
        linkNode.appendChild(dowNode);
        linkNode.appendChild(dateNode);
        linkNode.appendChild(timeNode);
        linkNode.appendChild(keyNode);



        return (linkNode);


    }
[/code]







































[code]
output bean:

<!ELEMENT link (linkName,linkPath,linkDesc,entryName,dbName,dbHome,entryFrame,entryTab,entryDesc,isEntryDir,isEntryFile,frameHome,tabHome,fileName,tabSelectedIndex,isFileTask,isTabTask,isFrameTask,dow,date,time,key)>
<!ATTLIST link action CDATA #REQUIRED>
<!ELEMENT linkName (#PCDATA)>
<!ELEMENT linkPath (#PCDATA)>
<!ELEMENT linkDesc (#PCDATA)>
<!ELEMENT entryName (#PCDATA)>
<!ELEMENT dbName (#PCDATA)>
<!ELEMENT dbHome (#PCDATA)>
<!ELEMENT entryFrame (#PCDATA)>
<!ELEMENT entryTab (#PCDATA)>
<!ELEMENT entryDesc (#PCDATA)>
<!ELEMENT isEntryDir (#PCDATA)>
<!ELEMENT isEntryFile (#PCDATA)>
<!ELEMENT frameHome (#PCDATA)>
<!ELEMENT tabHome (#PCDATA)>
<!ELEMENT fileName (#PCDATA)>
<!ELEMENT tabSelectedIndex (#PCDATA)>
<!ELEMENT isFileTask (#PCDATA)>
<!ELEMENT isTabTask (#PCDATA)>
<!ELEMENT isFrameTask (#PCDATA)>
<!ELEMENT dow (#PCDATA)>
<!ELEMENT date (#PCDATA)>
<!ELEMENT time (#PCDATA)>
<!ELEMENT key (#PCDATA)>
]>
<links>
<link action="entry">
<linkName>
null
</linkName>
<linkPath>
null
</linkPath>
<linkDesc>
null
</linkDesc>
<entryName>
fffffffffffff
</entryName>
<dbName>
bookMarkDB.xml
</dbName>
<dbHome>
C:\Users\Steves\.targetGuide\admin_\admin\Note Folder;fffffffffffff\bookMarkDB
</dbHome>
<entryFrame>
fffffffffffff
</entryFrame>
<entryTab>
Notes Glossary
</entryTab>
<entryDesc>
Enter a Description here and Submit
</entryDesc>
<isEntryDir>
true
</isEntryDir>
<isEntryFile>
false
</isEntryFile>
<frameHome>
C:\Users\Steves\.targetGuide\admin_\admin\Note Folder
</frameHome>
<tabHome>
C:\Users\Steves\.targetGuide\admin_\admin\Note Folder\fffffffffffff
</tabHome>
<fileName>
null
</fileName>
<tabSelectedIndex>
0
</tabSelectedIndex>
<isFileTask>
false
</isFileTask>
<isTabTask>
false
</isTabTask>
<isFrameTask>
true
</isFrameTask>
<dow>
Monday
</dow>
<date>
2013-02-11
</date>
<time>
05:45:00.000
</time>
<key>
zero
</key>
</link>
</links>




[/code]

xml

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Latest Post 11 Years Ago Latest Post by cisumma

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cisumma 0 Newbie Poster · Answer 1 · 2013-02-11T17:07:20+00:00

602.<linkPath>603.null604.</linkPath>

with a little research I found that the transformer and a null CDATA do not get along.
I inserted the String "null" into the CDATA Is that bad to. maybe my word choice here
shoud be anything but null?

cisumma 0 Newbie Poster · Answer 2 · 2013-02-19T15:32:50+00:00

I guess that error is either a CDATA is empty or a misspelled word no prob.