SAXTransformerFactory.newXMLFilter has no way to setParameter!

Question

HI friends,
When doing xslt chain transformation by filter, it seems JXAP's API SAXTransformerFactory.newXMLFilter() has no way to setParameter to transformer!
Let's see this:
TransformerFactory tFactory = TransformerFactory.newInstance();
//check TransformerFactory supports the use of SAXSource ommitted here
SAXTransformerFactory saxTFactory = ((SAXTransformerFactory) tFactory);
XMLFilter xsltFilter = saxTFactory.newXMLFilter(new StreamSource("foo.xsl"));But there is no way for this filter to setParameter() to the Transformer.
I checked the TrAXFilter class in org.apache.xalan.transformer which extends XMLFilterImpl, in its constructor, it simply create Transformer like this:
m_transformer = (TransformerImpl)templates.newTransformer();
I am wondering why JAXP does not have newXMLFilter(Source src, String[] parameter) and newXMLFilter(Template template, String[] parameter)methods? It should be very easy to add.
At this moment, which is the best way to setParameter to newXMLFilter?
Thanks!

Answer 1

I have the same problem...
Download Xalan (xslt processor) and can see two examples:
1. Pipe
2. Filters
"Pipe and UseXMLFilters illustrate two strategies for using the output of one transformation as the input for another transformation. The Pipe sample incorporates a 'push' model -- Transformer1 'pushes' its output to Transformer2, and so on -- whereas in the UseXMLFilters sample, Transformer3 'pulls' its input from Transformer2, and so on."