Catch output stream of xsl result-document

Question

I need a way to interfere in writting xsl result documents to avoid writting them to file system. Right now my template is writting to a temporary directory, and then i zip

Answer 1

Note that recent versions of Saxon require that the href (URI) is unique. Thus the system ID of the stream in the output resolver must also be unique.

For example:

1. Specify the result document href values in the stylesheet

2. Create the output resolver

   public class ZipOutputURIReslover implements OutputURIResolver{
   
       private ZipOutputStream zipOut;
   
       public ZipOutputURIReslover(ZipOutputStream zipOut) {
           super();
           this.zipOut = zipOut;
       }
   
       public void close(Result arg0) throws TransformerException {
           try {
               zipOut.closeEntry();
           } catch (IOException e) {
               e.printStackTrace();
           }
       }
   
       public Result resolve(String href, String base) throws TransformerException {
           try {
               zipOut.putNextEntry(new ZipEntry(href));
           } catch (IOException e) {
               e.printStackTrace();
           }
           Result result = new StreamResult(zipOut);
           // Must ensure the stream is given a unique ID
           result.setSystemId(UUID.randomUUID().toString());
           return result;
       }
   }
   

3. Attach the output resolver to the transformer

   ZipOutputURIResolver outputResolver = new ZipOutputURIResolver(outputStream);
   // Controller is the Saxon implementation of the JAXP Transformer
   ((Controller) transformer).setOutputURIResolver(outputResolver);