TypeId typeId = columnDescriptor.getType().getTypeId();
// Don't allow a column to be created on a non-orderable type
ClassFactory cf = lcc.getLanguageConnectionFactory().getClassFactory();
boolean isIndexable = typeId.orderable(cf);
if (isIndexable && typeId.userType()) {
String userClass = typeId.getCorrespondingJavaTypeName();
// Don't allow indexes to be created on classes that