[xep-support] Serialize Generator intput and then calling the standard PDF Target

[Nikolai Grigoriev]

Louis,

> For reason of collations I would like to be able to store 
> the result of several transformations (<xep:document 
> xmlns:xep="http://www.renderx.com/XEP/xep" ...) 
>
> But how do I call the standard FOTarget to generate the PDF 
> with this intermediary Source (a SAXSource) ?

FormatterImpl.createGenerator(FOTarget t) method creates
a generator object from a FOTarget. It implements SAX
ContentHandler; you can specify it as a handler to a SAX
parser that you use to read the intermediate source. Here's how 
it should look like:

// Create a formatter
java.util.Properties p = new java.util.Properties();
p.put("ROOT", "c:/xep/");
p.put("VALIDATE", "false");
com.renderx.xep.FormatterImpl formatter = 
    new com.renderx.xep.FormatterImpl( p);

// Make an output destination, and turn it into a generator
java.io.FileOutputStream fos =
    new java.io.FileOutputStream( "c:/tmp/result.pdf");
com.renderx.xep.FOTarget target = 
    new com.renderx.xep.FOTarget( fos, "pdf");
org.xml.sax.ContentHandler generator = 
    formatter.createGenerator (target);

// Create an XMLReader, and set the generator as content handler
org.xml.sax.XMLReader reader = 
    org.xml.sax.helpers.XMLReaderFactory.createXMLReader();
reader.setContentHandler (generator);

// Read the input source in a normal SAX way
org.xml.sax.InputSource source = 
   new org.xml.sax.InputSource(new java.io.File("c:/tmp/input.xep").toURL());
reader.parse(source);

// That's all
fos.close();

Regards,
Nikolai Grigoriev
RenderX

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