Comment 1 for bug 838834

Concerning your example query :

SKontakt sKontaktPath = SKontakt.kontakt;
QKontakt qKontaktPath = QKontakt.kontakt;

Query sqlQuery = hibernateSqlQuery()
      .from(sKontaktPath)
      .where(sKontaktPath.typ.eq("E-mail"))
      .createQuery(qKontaktPath);

How do SKontakt.kontakt and QKontakt.kontakt look like?

I have not yet been able to reproduce your problem.