From: Craig Raw <craig_at_QUIRK.CO.ZA>
Date: Fri, 11 Apr 2003 02:24:52 -0600

Hi,

I think I may have found a bug in the RI. I'm not sure if this is already known, but I searched the archives and came up with nothing. It involves a repeating choice element with elements having attributes only:

<?xml version="1.0"?>
<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema"
            elementFormDefault="qualified">

  <xsd:complexType name="DataPointer">
    <xsd:sequence>
      <xsd:element name="type" type="xsd:string"/>
     <xsd:choice minOccurs="0" maxOccurs="unbounded">
       <xsd:element name="categoryRef" type="CategoryRef"/>
       <xsd:element name="fieldRef" type="FieldRef"/>
     </xsd:choice>
    </xsd:sequence>
    <xsd:attribute name="id" type="xsd:int" use="required"/>
  </xsd:complexType>

  <xsd:complexType name="FieldRef">
    <xsd:attribute name="id" type="xsd:int" use="required"/>
  </xsd:complexType>

  <xsd:complexType name="CategoryRef">
    <xsd:attribute name="id" type="xsd:int" use="required"/>
  </xsd:complexType>

  <xsd:element name="pointer" type="DataPointer"/>

</xsd:schema>


This schema is legal and compiles fine. However, when I run the following code on it:

  ObjectFactory factory = new ObjectFactory();
  DataPointer pointer = factory.createPointer();
  pointer.setId( -1 );
 pointer.setType( "" );

 List pathRef = pointer.getCategoryRefOrFieldRef();
  for( int i = 0; i < 3; i++ )
  {
    FieldRef fieldRef = factory.createFieldRef();
    fieldRef.setId( i );
    pathRef.add( fieldRef );
  }

  JAXBContext jc = JAXBContext.newInstance( "datapointer" );
  Marshaller m = jc.createMarshaller();
  m.setProperty( Marshaller.JAXB_FORMATTED_OUTPUT, Boolean.TRUE );
  m.marshal( pointer, System.out );


This is produced:

  <?xml version="1.0" encoding="UTF-8" standalone="yes"?>
  <pointer id="-1" id="0" id="1" id="2">
  <type></type>
  </pointer>


I can only guess this is a bug since the XML generated is obviously invalid. Are there any known workarounds?

Thanks,

Craig