path = path.get(piece);
} catch (IllegalArgumentException e) {
// We weren't able to resolve the requested piece, likely because it's in a polymoprhic version
// of the path we're currently on. Let's see if there's any polymoprhic version of our class to
// use instead.
EntityManagerFactoryImpl em = ((CriteriaBuilderImpl) builder).getEntityManagerFactory();
Metamodel mm = em.getMetamodel();
boolean found = false;
Class<?>[] polyClasses = dynamicDaoHelper.getAllPolymorphicEntitiesFromCeiling(
path.getJavaType(), em.getSessionFactory(), true, true);
for (Class<?> clazz : polyClasses) {
ManagedType mt = mm.managedType(clazz);
try {
Attribute attr = mt.getAttribute(piece);