How can I use a StreamResult for a StreamSource. I am
transforming an xml document twice. The result of the first
transform is used to generate the transformer object for the
second transform. What is the best way to accomplish this
task. Please include examples with your suggestions.
We're talking JAXP here, for those who are mystified...
The best way to pipeline the output of one transformation as the input
of another is not using StreamResult/StreamSource, but using SAX.
There
are various mechanisms in JAXP to allow such pipelining. You can
compile
a transformation as a SAXFilter, in which case it can be inserted into
a
SAX pipeline along with other SAXFilters (which may or may not be XSLT
transformations). You can also wrap a Transformer into a SAX
ContentHandler, which you can then use as the SAXResult of another
transformation.
But if you must use StreamResult/StreamSource, then you can always
create a StreamResult for the first transformation based on a
StringWriter, and the use a StringReader over the same String as the
basis for the StreamSource for the next transformation.
How can I pass parameters to a SAXFilter in the middle of a pipeline?
Is that feasible?
From my reading of your last paragraph, using a
StringWriter/StringReader combination isn't *that* wasteful... so its
not quite the same as writing something out to read back in?
I ask because I want to use XMLFilters on the way into the transform,
perform a transformation with some parameters, then use more XMLFilters
on the result.
Currently I use a StringWriter, then convert that to an InputSource for
the XMLFilters that work on the result.
cheers
andrew
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