Re: [castor-dev] Downstream process after marshal to ContentHandler

[Werner Guttmann]

Keith,

does that include marshalling to a SAX 2 ContentHandler as well ? If so, I might take the opportunity to have a look
at Cocoon's CastorTransformer once more and adopt it accordingly ?

Werner

On Sat, 29 Nov 2003 12:52:36 -0600, Keith Visco wrote:

>
>Hi Werner,
>
>Castor 0.9.5.2 does support SAX 2.
>
>--Keith
>
>Werner Guttmann wrote:
>>
>> Alexander,
>>
>> whilst I don not have a ready solution for your problem, it might be
>> worthwhile to note that I was suffering from a very
>> similar problem a while ago when trying to get the CastorTransformer
>> working in Cocoon 2.1.x. The problem then
>> seemed to be that Castor in principle supports your needs, but would
>> force integration of these components at the
>> SAX1 level.
>>
>> As Cocoon internally uses SAX 2 event pipelines, I had a quick look at
>> the implementation of this component
>> (CastorTransformer), and it kind of confirmed my statement above. You
>> just cannot use the SAX2 ContentHandler
>> interface, as this interface didn't exist with SAX1. Just have a look
>> at the SAX1 documentation, and you should be
>> able to figure out things quite easily.
>>
>> Having said that, I might be completely wrong with my statement as
>> Castor XML might have changed in the
>> meantime.
>>
>> Werner
>>
>> On Mon, 24 Nov 2003 11:53:15 +0100, Alexander Zug wrote:
>>
>> >Hi
>> >
>> >has anyone experience with marshalling to a ContentHandler
>> >and further (SAX) processing?
>> >
>> >I would like to process a marshalled Castor object (via a
>> >DefaultHandler) into a DOM Level 2 object . Is this
>> >procedure generally possible?
>> >
>> >I tried s.th. like the following but I got an Error:
>> >javax.xml.transform.TransformerConfigurationException:
>> >javax.xml.transform.TransformerConfigurationException:
>> >javax.xml.transform.TransformerException:
>> java.lang.NullPointerException
>> >at: row 10 Transformer transformer =
>> >TransformerFactory.newInstance().newTransformer((Source)saxSource);
>> >
>> >Can anyone give me just one tip?
>> >
>> >1 DefaultHandler dHandler = new DefaultHandler();
>> >2 po.marshal((ContentHandler)dHandler);
>> >3 ParserAdapter pAdapter = new ParserAdapter();
>> >4 pAdapter.setContentHandler((ContentHandler)dHandler);
>> >5 SAXSource saxSource = new SAXSource();
>> >6 saxSource.setXMLReader((XMLReader)pAdapter);
>> >7 Document document =
>> >DocumentBuilderFactory.newInstance().newDocumentBuilder().newDocument();
>> >8 DOMResult domResult = new DOMResult();
>> >9 // org.apache.xalan.transformer.TransformerImpl.
>> >10 Transformer transformer =
>> >TransformerFactory.newInstance().newTransformer((Source)saxSource);
>> >11 transformer.transform(saxSource, domResult);
>> >12 System.out.println("domResult.getNode()="+domResult.getNode());
>> >
>> >
>> > Thanks a lot!
>> >Alex.
>> >
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