groovy

Curly braces in XSL-content break XSL-transformation in Xalan

Details

  • Type: Bug Bug
  • Status: Closed Closed
  • Priority: Minor Minor
  • Resolution: Not A Bug
  • Affects Version/s: 1.7.5
  • Fix Version/s: None
  • Component/s: XML Processing
  • Labels:
    None
  • Environment:
    - Windows XP
    - Java 1.6.0_21
  • Testcase included:
    yes
  • Number of attachments :
    0

Description

See example below which executes an XSL transformation. Problem is, that content in curly braces are / seem to be evaluated as variables by Groovy (or Xalan).

If I execute the code as is, I get following error:

FEHLER:  'Syntaxfehler in 'null'.'
SCHWER WIEGENDER FEHLER:  'Die Formatvorlage konnte nicht kompiliert werden.'
Caught: javax.xml.transform.TransformerConfigurationException: Die Formatvorlage konnte nicht kompiliert werden.
	at TestXalanCurlyBraces.main(TestXalanCurlyBracesGroovy.groovy:63)

When removing the curly braces in the xsl-content of 'get,set-by-create' the transformation get executed but in the output the attribute value of the pmPerms is empty! Thus, it looks as if

{get} is tried to resolve to a valid variable! Further on, this would explain, why something like {get,set-by-create} is invalid. (There can't be a variable name like 'get,set-by-create'.)
Though it doesn't look like a Groovy problem I couldn't reproduce the problem in Java.

- Is the problem reproducible?
- Workaround?
- Fix needed?

Thanks,
Peter




import java.io.FileReader

import java.io.FileWriter

import java.io.IOException



import javax.xml.transform.Transformer

import javax.xml.transform.TransformerException

import javax.xml.transform.TransformerFactory

import javax.xml.transform.stream.StreamResult

import javax.xml.transform.stream.StreamSource



public class TestXalanCurlyBraces {

  static def xmlContent = '''<?xml version="1.0" encoding="UTF-8"?>

<Attributes xmlns="http://www.ascom.com/opentas" 

            xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 

            xsi:schemaLocation="http://www.ascom.com/opentas AttrDefs.xsd">

  <SimpleAttribute    attrIdName="passwordNeverExpires"

                      pmPerms="{get,replace}"

                      nsPerms="{get,replace}"/>

</Attributes>

'''



  static def xslContent = '''<?xml version="1.0" encoding="UTF-8"?>

<xsl:stylesheet version="1.0"

    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

    xmlns:xsl="http://www.w3.org/1999/XSL/Transform"

    xmlns:otas="http://www.ascom.com/opentas">

    <xsl:output method="xml" standalone="yes"/>

    <Unable to render embedded object: File (-- XSLT Template to copy anything, priority="-1" -> apply only if no other rule applies) not found. -->

    <xsl:template match="@*|node()" priority="-1">

        <xsl:copy>

            <xsl:apply-templates select="@*|node()"/>

        </xsl:copy>

    </xsl:template>

    

    <xsl:template match="//otas:Attributes/otas:SimpleAttribute[last()]">

        <xsl:copy>

            <xsl:apply-templates select="@*|node()"/>

        </xsl:copy>

        <xsl:text disable-output-escaping="yes">

          <otas:SimpleAttribute2 attrIdName="strongAuth" pmPerms="{get}

"

                                  nsPerms="

{get,set-by-create}

"/>

        </xsl:text>

    </xsl:template>

</xsl:stylesheet>

'''



  /**


    
	
  • @param args
    • 
	
  • @throws IOException
    • 
	
  • @throws TransformerException
    
   */
    
  public static void main(String[] args) throws IOException, TransformerException 
{
    TransformerFactory factory = TransformerFactory.newInstance();
    Transformer transformer = factory.newTransformer(new StreamSource(new StringReader(xslContent)));
    transformer.transform(new StreamSource(new StringReader(xmlContent)), new StreamResult(System.out));
    
    System.out.println("Done.");
  }

    }
    

    

    

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    Paul King
 added a comment  -   

        
Actually I get the same error when running this as Java. Here is the code I used for both:




import java.io.IOException;
import java.io.StringReader;

import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerException;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.stream.StreamResult;
import javax.xml.transform.stream.StreamSource;

public class TestXalanCurlyBraces {
  static String xslContent = "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n<xsl:stylesheet version=\"1.0\"\n    xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\"\n    xmlns:xsl=\"http://www.w3.org/1999/XSL/Transform\"\n    xmlns:otas=\"http://www.ascom.com/opentas\">\n  <xsl:output method=\"xml\" standalone=\"yes\"/>\n\n  <xsl:template match=\"@*|node()\" priority=\"-1\">\n    <xsl:copy>\n      <xsl:apply-templates select=\"@*|node()\"/>\n    </xsl:copy>\n  </xsl:template>\n\n  <xsl:template match=\"//otas:Attributes/otas:SimpleAttribute[last()]\">\n    <xsl:copy>\n      <xsl:apply-templates select=\"@*|node()\"/>\n    </xsl:copy>\n    <xsl:text disable-output-escaping=\"yes\">\n      <otas:SimpleAttribute2 attrIdName=\"strongAuth\"\n          pmPerms=\"{get}\"\n          nsPerms=\"{get,set-by-create}\"/>\n    </xsl:text>\n  </xsl:template>\n</xsl:stylesheet>\n";

  static String xmlContent = "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n<Attributes xmlns=\"http://www.ascom.com/opentas\"\n    xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\"\n    xsi:schemaLocation=\"http://www.ascom.com/opentas AttrDefs.xsd\">\n  <SimpleAttribute attrIdName=\"passwordNeverExpires\" pmPerms=\"{get,replace}\" nsPerms=\"{get,replace}\"/>\n</Attributes>\n";

  public static void main(String[] args) throws IOException, TransformerException {
    TransformerFactory factory = TransformerFactory.newInstance();
    Transformer transformer = factory.newTransformer(new StreamSource(new StringReader(xslContent)));
    transformer.transform(new StreamSource(new StringReader(xmlContent)), new StreamResult(System.out));
    System.out.println("Done.");
  }
}



 

    

    

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    Paul King
 added a comment  -                 Actually I get the same error when running this as Java. Here is the code I used for both: 
  
 
 import  java.io.IOException;
 import  java.io.StringReader;

 import  javax.xml.transform.Transformer;
 import  javax.xml.transform.TransformerException;
 import  javax.xml.transform.TransformerFactory;
 import  javax.xml.transform.stream.StreamResult;
 import  javax.xml.transform.stream.StreamSource;

 public  class TestXalanCurlyBraces {
   static   String  xslContent =  "<?xml version=\" 1.0\ " encoding=\" UTF-8\ "?>\n<xsl:stylesheet version=\" 1.0\ "\n    xmlns:xsi=\" http: //www.w3.org/2001/XMLSchema-instance\ "\n    xmlns:xsl=\" http://www.w3.org/1999/XSL/Transform\ "\n    xmlns:otas=\" http://www.ascom.com/opentas\ ">\n  <xsl:output method=\" xml\ " standalone=\" yes\ "/>\n\n  <xsl:template match=\" @*|node()\ " priority=\" -1\ ">\n    <xsl:copy>\n      <xsl:apply-templates select=\" @*|node()\ "/>\n    </xsl:copy>\n  </xsl:template>\n\n  <xsl:template match=\" //otas:Attributes/otas:SimpleAttribute[last()]\ ">\n    <xsl:copy>\n      <xsl:apply-templates select=\" @*|node()\ "/>\n    </xsl:copy>\n    <xsl:text disable-output-escaping=\" yes\ ">\n      <otas:SimpleAttribute2 attrIdName=\" strongAuth\ "\n          pmPerms=\" {get}\ "\n          nsPerms=\" {get,set-by-create}\ "/>\n    </xsl:text>\n  </xsl:template>\n</xsl:stylesheet>\n" ;
 
   static   String  xmlContent =  "<?xml version=\" 1.0\ " encoding=\" UTF-8\ "?>\n<Attributes xmlns=\" http: //www.ascom.com/opentas\ "\n    xmlns:xsi=\" http://www.w3.org/2001/XMLSchema-instance\ "\n    xsi:schemaLocation=\" http://www.ascom.com/opentas AttrDefs.xsd\ ">\n  <SimpleAttribute attrIdName=\" passwordNeverExpires\ " pmPerms=\" {get,replace}\ " nsPerms=\" {get,replace}\ "/>\n</Attributes>\n" ;
 
   public   static  void main( String [] args)  throws  IOException, TransformerException {
    TransformerFactory factory = TransformerFactory.newInstance();
    Transformer transformer = factory.newTransformer( new  StreamSource( new  StringReader(xslContent)));
    transformer.transform( new  StreamSource( new  StringReader(xmlContent)),  new  StreamResult( System .out));
     System .out.println( "Done." );
  }
}
 
           

    



                     

    

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    Paul King
 added a comment  -   

        
Just checking my Michael Kay XSLT reference, you are just observing XSLT Attribute Value Templates in action. Simply use double curly braces to have single curly braces appear in your output, e.g,:




{{get}}



 

    

    

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    Paul King
 added a comment  -                 Just checking my Michael Kay XSLT reference, you are just observing XSLT  Attribute Value Templates  in action. Simply use double curly braces to have single curly braces appear in your output, e.g,: 
  
 {{get}}
 
           

    



                     

    

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    Peter Fürholz
 added a comment  -   

        
Thank you very much to point that out! Attribute Value Templates were really something I wasn't aware of. 

What I found out is, that xalan.jar and xsltc.jar differ in this area. Since I used xalan.jar in the Java example I got a different error message which explained why I supposed it might be a Groovy problem. If I use xsltc.jar the error message in Groovy and Java is the same. 



Thanks again,

Peter
 

    

    

        Show
        

            
    
    
    
                

    Peter Fürholz
 added a comment  -                 Thank you very much to point that out! Attribute Value Templates were really something I wasn't aware of.  
What I found out is, that xalan.jar and xsltc.jar differ in this area. Since I used xalan.jar in the Java example I got a different error message which explained why I supposed it might be a Groovy problem. If I use xsltc.jar the error message in Groovy and Java is the same.  

 Thanks again, 
Peter          

    



                 



                                
                            

                            

                                
                                    
People
    
    
  • 
                
    
            
    Assignee:
    
            
    
                        Paul King
            
    
        
    
                        
    
            
    Reporter:
    
            
    
                        Peter Fürholz
            
    
        
    
                    
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