Oracle iAS 10.1.3.5.0 Release 3 XALAN XSLT BSF Manager not found

Question

Hello to all,
I have a strange problem.
I have a very well running app under the iAS release 2.
Now I have to go at release 3.
The main problem that I face has to do with the XALAN libraries.
I used to load some templates (XSL) in memory like this:
System.setProperty("javax.xml.transform.TransformerFactory","org.apache.xalan.processor.TransformerFactoryImpl")
InputStream xslInput = new FileInputStream(buf.toString());
Source xslSource = new StreamSource( xslInput );
TransformerFactory factory = TransformerFactory.newInstance();
Templates tempFalseGlobal = factory.newTemplates( xslSource );
This code breaks with the new release.
More specifically it throws an InvocationException and BSFManaget not found. NullPointerException....
I could paste the full stack trace if required.
The error is being raised when I try to execute the transformation
transformer.transform(xml, out);
Thus I tried to use the latest XalanJ 2.7.1 and I have set
System.setProperty("javax.xml.transform.TransformerFactory","org.apache.xalan.xsltc.trax.TransformerFactoryImpl");
This requires changes into my XSLs since the Javascript extensions are not supported by the SUN's implementation.
I tried to comment out all the setProperty statements and I receive the following error:
<Line 1077, Column 92>: XML-22016: (Error) Extension function namespace should s
tart with 'http://www.oracle.com/XSL/Transform/java/'.
I am blocked right now, could you please give me some pointers here how to proceed.
I would like to make the same application to work with no or the minimum changes required.
Thank you in advance,

Answer 1

Finally I found the answer.
for a strange reason the classloader in release 3 was not able to find the BSF provider although the bsf.jar was inside the applib.
Thus I have set the
System.setProperty("org.apache.xalan.extensions.bsf.BSFManager","class to load");
Could someone explain me why the application server was not able to locate the class although the iAS release 2 was working fine ?
Thank you.