title: pass in a numbers with a maximum size of 2^256 through a wsdl
body: <p>We have currently a wsdl element that was defined as long since the number that was being passed could have a maximun value of 2^64.But now the client wants to pass in numbers with maximum values of 2^256 .In my view the only way to support this is to change the xsd type to String.Anybody has a better idea about dealing with it .</p>
  
  <p>Also the java code needs to handle this and persist it to the DB.
  There also i see no alternative but to use String object.
  Am i thinking rightly?</p>