FW: [XalanJ2][C2] javax.xml.tranform API

["Timm, Sean" <ST...@mailgo.com>]

Davanum,
Just in case you missed it...

- Sean T.

-----Original Message-----
From: Gary L Peskin [mailto:garyp@firstech.com]
Sent: Thursday, November 09, 2000 8:54 AM
To: xalan-dev@xml.apache.org
Subject: Re: [XalanJ2][C2] javax.xml.tranform API


Davanum Srinivas wrote:
> Thanks Scott. We bave updated C2 to use the new API. But there are some
concerns. I want to see if
> i can use only the java.xml.transform package and nothing else. Right now
this is not possible,
> Here's why...
> 
> Problem #1: We need an explicit import of
"org.apache.xalan.transformer.TrAXFilter" as we cache
> templates and need to get an XMLFilter to work with in our code. We do
this as follows:
> 
>     public XMLFilter getXMLFilter() throws
TransformerConfigurationException
>     {
>        return new TrAXFilter(templates);
>     }
> Problem #2: We need an explicit import of
"org.apache.xalan.transformer.TransformerImpl" as we
> need access to getInputContentHandler() and setContentHandler(). We type
cast as shown below.
> 
>      ContentHandler chandler =
((TransformerImpl)transformer).getInputContentHandler();
>      ....
>      ((TransformerImpl)transformer).setContentHandler(content);
>      ....
> 
> To eliminate #1 and #2, Is it possible to do the following
> 
> - Add a newXMLFilter() in Templates which returns an XMLFilter
> - Add a getInputContentHandler in Transformer which returns the
ContentHandler
> - Add a setContentHandler in Transformer which can take a ContentHandler
as a parameter.


Dims --

I had these same problems when I first started working with the new
structure.  Have a look in javax.xml.transform.sax.  I think it has what
you're looking for.  For problem #2, look at

	ContentHander chandler =
SAXTransformerFactory.newTemplatesHandler();
	...
	SAXResult.setHandler(content);
	...

You'll need to rework things a little but I think what you want will all
be in that package.

For problem #1, look at

	return SAXTransformerFactory.newXMLFilter(null);

or something like that.

Look at samples/trax/Examples.java.  It has lots of examples on using
the new classes.

HTH,
Gary