[castor-user] [xml] substitutionGroup/code generator creates a validation error

[Doug Palmer]

I'm using subtitution groups to allow a configuration file to have a
list of different configuration elements. If I strip down the schema to
the attached schema (Ce and Be form a substitution group) and generate
the code, when I attempt to unmarshal something like

<De xmlns="http://www.csiro.org/castorprob";>
  <Be/>
</De>

then all is OK. However, attempting to unmarshal something like

<De xmlns="http://www.csiro.org/castorprob";>
  <Be/>
  <Ce/>
</De>

causes the exception:

Element with name Ce passed to type De in incorrect order; It is not
allowed to be the last element of this sequence!{File: [not available];
line: 4; column: 8}

Attached is a schema, ant build file, code and test cases to reproduce
this behavior. Put the .xsd/.xml files is an "xml" subdirectory,
Test.java in a src/org/csiro/castorprob subdirectory and add the castor,
commons-logging and xercesImpl jars to the lib subdirectory. Then do
"ant run" to reproduce the results.

castor-bindings.xml
Description: application/xml

test.xsd
Description: application/xml

test1.xml
Description: application/xml

test2.xml
Description: application/xml

test3.xml
Description: application/xml

test4.xml
Description: application/xml

build.xml
Description: application/xml

package org.csiro.castorprob;

import java.io.*;
import java.net.*;
import org.exolab.castor.xml.*;
import org.exolab.castor.xml.util.XMLClassDescriptorResolverImpl;

/**
 * Test reading an XML document.
 * 
 * @author Doug Palmer
 *
 */
public class Test {
  private XMLClassDescriptorResolverImpl resolver; 

  public Test() throws ResolverException {
    this.resolver = new XMLClassDescriptorResolverImpl();
    this.resolver.addClass(Be.class.getName());
    this.resolver.addClass(Ce.class.getName());
    this.resolver.addClass(De.class.getName());
  }

  public Object read(URL url) throws IOException, ValidationException, MarshalException {
    Reader reader = new InputStreamReader(url.openStream());
    Unmarshaller unmarshaller = new Unmarshaller();
    unmarshaller.setResolver(this.resolver);
    return unmarshaller.unmarshal(reader);
  }

  public static void main(String[] args) {
    try {
      Test test = new Test();
      
      for (String arg: args) {
        try {
          URL file = new URL(arg);
          System.out.println(test.read(file));
        } catch (Exception ex) {
          ex.printStackTrace(System.err);
        }
      }
    } catch (Exception ex) {
      ex.printStackTrace(System.err);
    }
  }

}


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