different results of xsl transformation using java transformer and command line processor

Question

Applying XSL in Java works on some data samples, but produces an empty result on others, where a command line processor still produces a valid result. Below is an example where i see the difference. given an XSL and an XML listed below, the command line:

saxonb-xslt -s:metsmods_test3.xml -xsl:metsmods2.xsl

returns:

  Warning: at xsl:stylesheet on line 5 column 61 of metsmods2.xsl:
  Running an XSLT 1.0 stylesheet with an XSLT 2.0 processor

        main_label:Wachsende Häuser aus lebenden Bäumen entstehend
        identifier:urn:nbn:de:kobv:83-goobi-3255500
        main_label:II. Teil. Art und Verwendung der Naturbauten.
        identifier:urn:nbn:de:kobv:83-goobi-3255762
        main_label:III. Teil. Erörterung sonstiger Punkte.
        identifier:urn:nbn:de:kobv:83-goobi-3255929
        main_label:
        identifier:urn:nbn:de:kobv:83-goobi-3256094
        main_label:
        identifier:urn:nbn:de:kobv:83-goobi-3256100
        identifier.kobv:990006350260302884
        title:Wachsende Häuser aus lebenden Bäumen entstehend
        title:Wachsende Häuser aus lebenden Bäumen entstehend

But the java tranformer snipplet (taken from https://examples.javacodegeeks.com/core-java/xml/xpath/xpath-xslt-tutorial/ and listed below) produces no output on the same files saxonb-xslt does. I assume this has to do with namespaces or access to DTD's, which the command line processor and the chosen transformer handle differently. but what exactly? why no exceptions while processing in Java?

code:

public class Main {

private static Document document;

public static void main(String[] args) throws Exception {
    DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();

    File xml = new File("/home/peter/1stax/src/metsmods_test3.xml");
    File xsl = new File("/home/peter/1stax/src/metsmods2.xsl");


    DocumentBuilder builder = factory.newDocumentBuilder();
    document = builder.parse(xml);

    // Use a Transformer for output
    TransformerFactory transformerFactory = TransformerFactory.newInstance();
    StreamSource style = new StreamSource(xsl);
    Transformer transformer = transformerFactory.newTransformer(style);

    DOMSource source = new DOMSource(document);
    StreamResult result = new StreamResult(System.out);
    transformer.transform(source, result);
}

}

xsl:




    

    
        
            
                
            
            
                
                    
                        
                    
                    
                        DMDLOG_0000
                    
                
            
        
    

    

        
            main_label:
            identifier:
        

        
            identifier.:
        

        
            identifier.:
        

        
            title:

xml data:



   
      
         Goobi - ugh-3.0-ugh-2.0.0-29-g3b6efe1 - 21−December−2016
         Goobi
      
   
   
      
         
            
               
                  Wachsende Häuser aus lebenden Bäumen entstehend
               
               
                  Wachsende Häuser aus lebenden Bäumen entstehend
               
               
                  990006350260302884
               
               Deutsche Gartenbaubibliothek#Monographien#Gartenbau
               Zentralbibliothek#Monographien#Technik, Architektur, Bauwesen
               
                  ger
               
               
                  [1926]
               
               https://creativecommons.org/publicdomain/mark/1.0/
               
                  320 Seiten
                  reformatted digital
               
               
                  8Af6500
                  Universitätsbibliothek der Technischen Universität Berlin
               
               
                  
                     aut
                  
                  Wiechula
                  Arthur
                  Wiechula, Arthur
               
               
                  
                     Berlin
                  
                  2018
                  Universitätsbibliothek der Technischen Universität Berlin
                  [Electronic ed.]

Martin Honnen · Accepted Answer

Make sure you explicitly use a namespace aware DocumentBuilderFactory if you want to process XML and XSLT with Java as otherwise you won't get a meaningful result, XSLT itself is XML depending on namespaces and any XML input it uses is also better processed with namespace support.

Of course to simply use XML from a file as the input you don't need a DocumentBuilder and a DOMSource, you can use a StreamSource as well where then the XSLT processor takes care of processing the input in a namespace aware mode.

different results of xsl transformation using java transformer and command line processor

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