I have strings like a<K->1,T->T1> and would like to separate parameters (in
this example, K and T) from their values (1 and T1). Apparently, QVTO
implements just a fraction of the string operations proposed in the spec,
making it very difficult (if possible at all) to "tokenize" strings. So, is
this a typical case for blackboxes? If so, how to implement them? Is there
any particularity or all I have to write is a plain (java?) class
implementing only the interface declared in the qvt file? Where to put my
classes?