Hi Harald,
Have a look at: http://nagoya.apache.org/bugzilla/show_bug.cgi?id=12993
it contains a pretty nasty workaround for the problem and works with
castor-0.9.4. If you find a better solution please let us know.
Right now I am working on a new version of the transformer that can use
input and outputmodules to store and retrieve to objects to marshall or the
unmarshalled objects.
HTH,
Michael
-----Original Message-----
From: Harald Wehr
To: [EMAIL PROTECTED]
Sent: 23-1-2003 12:18
Subject: Castor Transformer
I am using a Cocoon-Developer-Snapshot from October this year.
The Castor Transformer i fetched from CVS. Unfortunately this class uses
a lot of deprecated stuff. Additionally i have to serialize a
java-object stored in my xmlform.
So i tried to write my own transformer. The code is attached here. The
Castor Marshaller needs a Sax-ContentHandler that I get by calling the
variable "contentHandler", available in the transformer.
Following Exception do I get. Do I have to set the Sax-Parser in the
Properties? When I set the Sax-Parser from cocoon.xconf additionally in
the properties i get a ClassNotFoundException.
When i replace the deprecated Classes from the CVS-transformer same
things happen.
Any help is appreciated.
Harald
------------Exception--------------------
org.xml.sax.SAXException: System property org.xml.sax.parser not
specified
at org.xml.sax.helpers.ParserAdapter.<init>(ParserAdapter.java:104)
at org.exolab.castor.xml.Marshaller.<init>(Unknown Source)
at
de.mobiharz.cocoon.transformation.MobiHarzXMLFormTransformer.startElemen
t(MobiHarzXMLFormTransformer.java:45)
at
org.apache.cocoon.xml.AbstractXMLPipe.startElement(AbstractXMLPipe.java:
130)
at
org.apache.cocoon.transformation.AbstractSAXTransformer.startElement(Abs
tractSAXTransformer.java:340)
at
org.apache.xerces.parsers.AbstractSAXParser.startElement(AbstractSAXPars
er.java:459)
at
org.apache.xerces.parsers.AbstractXMLDocumentParser.emptyElement(Abstrac
tXMLDocumentParser.java:221)
at
org.apache.xerces.impl.XMLNamespaceBinder.handleStartElement(XMLNamespac
eBinder.java:874)
at
org.apache.xerces.impl.XMLNamespaceBinder.emptyElement(XMLNamespaceBinde
r.java:591)
at
org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanStartElement(X
MLDocumentFragmentScannerImpl.java:747)
...
----------Transformer---------------------
package de.mobiharz.cocoon.transformation;
import org.apache.cocoon.components.xmlform.Form;
import org.apache.cocoon.transformation.XMLFormTransformer;
import org.apache.commons.jxpath.JXPathContext;
import org.exolab.castor.xml.Marshaller;
import org.xml.sax.AttributeList;
import org.xml.sax.Attributes;
import org.xml.sax.HandlerBase;
import org.xml.sax.SAXException;
import org.xml.sax.helpers.AttributesImpl;
import de.mobiharz.model.buchungen.Unterkunft;
public class MobiHarzXMLFormTransformer extends XMLFormTransformer {
public void startElement(
String namespaceURI,
String localName,
String qName,
Attributes attributes)
throws SAXException {
if (namespaceURI.equals("") &&
localName.equals("xmlformergebnis")) {
try {
String formName = attributes.getValue("xmlform-id");
String objectPath = attributes.getValue("xpath");
Form form = Form.lookup(objectModel, formName);
JXPathContext context =
JXPathContext.newContext(form.getModel());
Object o = context.getValue(objectPath);
// System.out.println(o);
super.startElement(
"",
"xmlformergebnis",
"xmlformergebnis",
attributes);
Marshaller marshaller = new Marshaller(contentHandler);
Unterkunft u = (Unterkunft)o;
marshaller.marshal(o);
} catch (Exception e) {
e.printStackTrace();
super.startElement(
"",
"xmlformergebnis",
"xmlformergebnis",
attributes);
}
} else
super.startElement(namespaceURI, localName, qName,
attributes);
}
public void endElement(String namespaceURI, String localName, String
qName)
throws SAXException {
if ((namespaceURI != null)) {
if (namespaceURI.equals("") &&
localName.equals("xmlformergebnis"))
super.endElement("", "xmlformergebnis",
"xmlformergebnis");
else
super.endElement(namespaceURI,
localName, qName);
}
}
}
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