DO NOT REPLY [Bug 10050] New: - org.apache.xml.serialize.XMLSerializer / super class BaseMarkupSerializer doesn't call the prepare-method, so the printer is null

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http://nagoya.apache.org/bugzilla/show_bug.cgi?id=10050

org.apache.xml.serialize.XMLSerializer / super class BaseMarkupSerializer doesn't call the prepare-method, so the printer is null

           Summary: org.apache.xml.serialize.XMLSerializer / super class
                    BaseMarkupSerializer doesn't call the prepare-method, so
                    the printer is null
           Product: Xerces2-J
           Version: 2.0.1
          Platform: PC
        OS/Version: Windows NT/2K
            Status: NEW
          Severity: Critical
          Priority: Other
         Component: Serialization
        AssignedTo: xerces-j-dev@xml.apache.org
        ReportedBy: stefan.pottinger@web.de
                CC: stefan.pottinger@web.de


I had to do some work during the parsing of a document and had to write some 
parts of it to an output. So I used the XMLSerializer like this:

outputFormat = new OutputFormat("xml", "UTF-8", false);
outputFormat.setPreserveSpace(true);
outputFormat.setOmitXMLDeclaration(true);
recordWriter = new StringWriter();
recordSerializer = new XMLSerializer(recordWriter, outputFormat);
setContentHandler(recordSerializer);

Later I tried the following:

public void startElement(java.lang.String namespaceURI, java.lang.String 
localName, java.lang.String qName, Attributes atts) throws SAXException {
....................
super.startElement(namespaceURI, localName, qName, atts);//to print sth to my 
StringWriter
.....................
and I got: 
java.lang.IllegalStateException: SER002 No writer supplied for serializer
  org.apache.xml.serialize.XMLSerializer.startElement(XMLSerializer.java:258)
  org.xml.sax.helpers.XMLFilterImpl.startElement(XMLFilterImpl.java:575)

I looked in the source from the XMLSerializer and the BaseMarkupSerializer and 
it seemed that the writer in the BaseMarkupSerializer wasn't mapped on the 
_printer Variable. That should have been done in the 
<BaseMarkupSerializer>.prepare() method. So I tried this after the 
initialisation:

(look above)...
setContentHandler(recordSerializer);
try {recordSerializer.asContentHandler();}//!!!!!!!!!!!!!!!!!!!!!!!
catch (Exception e) {e.printStackTrace();}//!!!!!!!!!!!!!!!!!!!!!!!

With this workaround I could call the prepare()-method and it worked! It looks 
like the serialize() of the BaseMarkupSerializer calls the prepare-method in 
the beginning, but what if I don't use the serialize()? The writer is there but 
where will the _printer be pointing to the _writer?

Hope you understand this.

Stefan

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