Thanks Jeremias. I think the main reason we are parsing the fodoc into a DOM is
so we can serialize the FO out to a file for debugging (it's either that or do
the transformation twice). I'm actually in the process of altering the HSSF
stuff now so I can debug the GMR output. On your adive I will change both of
them back to a stream source for production. Although I seem to remember
experimenting extensively when we first started with SAX vs. DOM input sources
using the FOP XSLTInputHandler, SAXHandler, etc. As I recall, we didn't see
much difference in performance. But I will try it again for this round and let
you know how it goes. Actually here is the old commented out code from these
tests:
File xmlFile = new File(xmlFilename);
File xsltFile = new File(xsltFilename);
org.apache.fop.apps.InputHandler inputHandler2 = new
org.apache.fop.apps.XSLTInputHandler(xmlFile, xsltFile);
org.xml.sax.XMLReader parser2 = inputHandler2.getParser();
driver.render(parser2, inputHandler2.getInputSource());
Is there a more efficient method I should try?
thx,
Matt
> > org.w3c.dom.Document xmlDoc = dBuilder.parse(xmlFile);
> > javax.xml.transform.dom.DOMSource xmlDomSource = new
> javax.xml.transform.dom.DOMSource(xmlDoc);
> >
> > org.w3c.dom.Document xslDoc = dBuilder.parse(xsltFile);
> > javax.xml.transform.dom.DOMSource xslDomSource = new
> javax.xml.transform.dom.DOMSource(xslDoc);
>
> Why do you parse the whole thing into a DOM? That's very inefficient
> when you subsequently give it to JAXP anyway. A StreamSource
> would be a
> lot better!
>
> Have a look at the Example*.java in the latest FOP distribution under
> examples/embedding.
>
> >
> > javax.xml.transform.TransformerFactory tFactory
> > = javax.xml.transform.TransformerFactory.newInstance();
> > javax.xml.transform.Templates templates =
> tFactory.newTemplates(xslDomSource);
> > javax.xml.transform.Transformer transformer =
> templates.newTransformer();
> >
> > ByteArrayOutputStream out = new ByteArrayOutputStream();
> >
> > org.w3c.dom.Document foDoc =
> (org.w3c.dom.Document)domResult.getNode();
>
> Again, don't do that. Use SAX as with the HSSF serializer:
>
> Result result = new SAXResult(driver.getContentHandler());
> transformer.transform(xml, result);
>
> See how similar the code is to the one for HSSF?
>
> > org.apache.fop.apps.Driver driver = new
> org.apache.fop.apps.Driver();
> > driver.setErrorDump(true);
> > driver.setRenderer(driver.RENDER_PDF);
> > driver.setupDefaultMappings() ;
> > driver.setOutputStream(out);
> > driver.render(foDoc);
> >
> > response.setContentType("application/pdf");
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