[Morphos] Re: Another API idea

[Nicola Ken Barozzi <ni...@apache.org>]

How Fop can use Morphos:

Jeremias Maerki wrote:
> My head's smoking at the moment. After reading the InfoMover threads
> again and thinking about performance/tread-safety implications of
> various approaches I can't think clearly anymore. 

Hehehe. It happened to me too, it's really hard.

> That's why I simply
> dump an idea on the API I've had 6 weeks ago for now. It's not related
> to Morphos and but rather orients itself on JAXP. Maybe it helps for
> this discussion.
> 
> //Setup XSL transformation
> TransformerFactory tf = TransformerFactory.newInstance();
> Source xslt = new StreamSource(myStylesheetURL);
> Transformer t = tf.newTransformer(xslt);
> Source src = new StreamSource(File myxmlfile);
> 
> //Setup FOP
> FOProcessorFactory fopFactory = new FOProcessorFactory();
> fopFactory.setOutputFormat("application/pdf");
> // or:
> // Properties outputProps = new Properties();
> // outputProps.put("compressed", "false");
> // fopFactory.setOutputFormat("application/pdf", Properties props);
> fopFactory.setProperty("baseURL", "file://D:/Temp");
> 
> //Prepare Processor
> FOProcessor fop = fopFactory.newProcessor();
> Result pdfres = new StreamResult(File mypdffile);
> // for AWT: AWTResult
> fop.setResult(pdfres);
> 
> //Start transformation
> t.transform(src, fop.getResultForJAXP());
> 
> This possibility uses as much from JAXP as possible which means using
> almost the same patterns everyone is used to.

It's basically identical to the Morphos way, it seems we got to the same 
conclusions from different paths, which is good :-)

  // Create the Manager that gives me the morphers
  MorpherFactory mfactory = new SimpleMorpherFactory(Hashtable confs);

  // Get a jaxp Morpher by name
  Morpher jaxpmorpher =  mfactory.getMorpher("jaxp");

  // Get a fop Morpher by name
  Morpher fopmorpher  =  mfactory.getMorpher("fop");

  // Get a Morpher that serializes an XML dom to a stream
  Morpher streammorpher =
    mfactory.getMorpher(
       new DataType("text/xml", "object/dom"),
       new DataType("text/xml", "stream/unix")
     );


  //Configure the Morphers
  PropertyUtils.setSimpleProperty(jaxpmorpher,
                                  "stylesheet",
                                  "transform.xsl");

  PropertyUtils.setSimpleProperty(foppmorpher,
                                  "baseURL",
                                  "file://D:/Temp");

   //Chain the three:

   MorpherPipeline mpipeline =  new SimpleMorpherPipeline();
   mpipeline.addStage(jaxpmorpher );
   mpipeline.addStage(fopmorpher );
   mpipeline.addStage(streammorpher );

   // Now I have my pipeline. I can now morph many times I want
   // (here once)
   try{

     SimpleErrorHandler simpleErrorInfo = new SimpleErrorHandler ();
     Map runInfo = new HashMap();
     runinfo.put("lenient", true);

     mpipeline.morph(myDomObject, outputstream
                      simpleErrorInfo, runInfo );
   }
   catch(MorphException? ioe){
    .....}
   catch(OblectFlavorException? ofe){
   .....}

   System.out.println(simpleErrorInfo.getMessages());


-- 
Nicola Ken Barozzi                   nicolaken@apache.org
             - verba volant, scripta manent -
    (discussions get forgotten, just code remains)
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