Data binded form not working as per book example

I'm following the examples here and unless I'm missing something or making a dumb mistake, I can't make it work. I do get the bean form but I don't get the custom fields generated from my FormFieldFactory. I debugged the code and the code within the factory is never called. I'm trying to figure out why.

Here's the relevant code;

final Form form = new Form();

                // Set form caption and description texts 
                form.setCaption(getInstance().getResource().getString("message.requirement.create"));
                // Set the form to act immediately on user input. This is
                // necessary for the validation of the fields to occur immediately
                // when the input focus changes and not just on commit.
                form.setImmediate(true);

                // Create a bean item that is bound to the bean. 
                BeanItem item = new BeanItem(new Requirement());

                // Bind the bean item as the data source for the form. 
                form.setItemDataSource(item);

                //Set the order of fields to display as well as which fields to hide
                ArrayList<String> fields = new ArrayList<String>();
                //Required fields
                fields.add("uniqueId");
                fields.add("description");
                fields.add("requirementTypeId");
                for (String field : fields) {
                    form.getField(field).setRequired(true);
                    form.getField(field).setRequiredError(
                            getInstance().getResource().getString(
                            "message.required.field.missing").replaceAll("%f", field));
                }
                //Non required fields
                fields.add("notes");
                form.setVisibleItemProperties(fields);

               form.setFormFieldFactory(new FormFieldFactory() {
                    @Override
                    public Field createField(Item item, Object propertyId, Component uiContext) {
                        // Identify the fields by their Property ID.
                        String pid = (String) propertyId;
                        if ("uniqueId".equals(pid)) {
                            TextField textField = new TextField(getInstance().getResource().getString("general.unique.id"));
                            textField.addValidator(new Validator() {
                                @Override
                                public void validate(Object value) throws InvalidValueException {
                                    throw new UnsupportedOperationException("Not supported yet.");
                                }

                                @Override
                                public boolean isValid(Object value) {
                                    HashMap<String, Object> parameters = new HashMap<String, Object>();
                                    parameters.put("id", value);
                                    parameters.put("product",
                                            new ProductJpaController(
                                            DataBaseManager.getEntityManagerFactory()).findProduct(currentProduct.getId()));
                                    List<Object> result = DataBaseManager.createdQuery(
                                            "select r from Requirement r where "
                                            + "uniqueId=:id and productId=:product", parameters);
                                    if (result.isEmpty()) {
                                        return true;
                                    }
                                    return false;
                                }
                            });
                            return textField;
                        }
                        if ("description".equals(pid) || "notes".equals(pid)) {
                            return new TextArea(getInstance().getResource().getString("general.description"));
                        }
                        if ("requirementTypeId".equals(pid)) {
                            Select select = new Select(
                                    getInstance().getResource().getString("message.requirement.type"));
                            for (Iterator<Object> it = DataBaseManager.namedQuery("RequirementType.findAll").iterator(); it.hasNext();) {
                                RequirementType rt = (RequirementType) it.next();
                                select.addItem(rt.getName());
                            }
                            //Allow to create new ones
                            select.setNewItemsAllowed(true);
                            return select;
                        }
                        return null;//Invalid field
                    }
                });
...
                

All fields show up as TextFields (the defaults)

Any ideas/hints? This is on Vaadin 6.8.0

Tobias Demuth: Try setting the FieldFactory prior to setting the datasource. If I remember correctly, order does matter in this case.

That did the trick! Thanks a lot!