photo.setComment("vaya fotito...");
photo.setName("foto borracho");
em.persist(photo);
NominalAttribute wineColor = new NominalAttribute();
wineColor.setName("color");
wineColor.setValue("RED");
NominalAttribute DO = new NominalAttribute();
DO.setName("DO");
DO.setValue("Priorat");
NominalAttribute macerationCask = new NominalAttribute();
macerationCask.setName("maceration_cask");
macerationCask.setValue("FRENCH_OAK");
NumericalAttribute macerationTimeMonths = new NumericalAttribute();
macerationTimeMonths.setName("maceration_months");
macerationTimeMonths.setValue(8.0);