When the XMI Reader automatically generates the
PrimitiveTypes package (from a MOF 1.3 model), I
think that is should make sure it generates the
javax.jmi.packagePrefix tag for it. Also, instead
of including just the datatypes that are actually
used by the metamodel, I think it would be better
to always include all of them. That is, if the XMI
Reader adds the PrimitiveTypes package, it should
always add the XMI equivalent of:

package PrimitiveTypes
{
   tag "*tag" : javax.jmi.packagePrefix =
'javax.jmi' on PrimitiveTypes
   primitive type Boolean
   primitive type Integer
   primitive type Long
   primitive type Float
   primitive type Double
   primitive type String
}

Instead of just, e.g.:

package PrimitiveTypes {
   primitive type String
   primitive type Integer
}

I think it is too confusing to have a different
version of the PrimitiveTypes package for each
metamodel (e.g. some without "Boolean", most
without "Long", etc.).

Martin said "I agree" on dev@mdr.netbeans.org