using restriction

[Ankit]

My schema is like    <simpleType name="Attribute">     <restriction base="string">       <length minLength="1"/>     </restriction>   </simpleType>   <simpleType name="Class">     <restriction base="Attribute">       <enumeration value="First"/>       <enumeration value="Business"/>       <enumeration value="Coach"/>     </restriction>   </simpleType> When I run WSDL2JAVA, I expected that it will genrate the code like _class extends Attribute but it does not happen. I can not use extension instead of restriction because extension does not support enumeration as content. Any suggestions???????/ thanx in advance Ankit