[WICKET-6383] PropertyValidator throws Exception when Model is empty

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Invalid
• Component/s: wicket-bean-validation
• Assignee: Sven Meier
• Reporter: Kamil
• Created: 30/May/17 17:20
• Updated: 30/May/17 18:01
• Resolved: 30/May/17 18:01

Description

During creation of PropertyValidator if Model is empty (it is set during runtime):

IModel<User> model = new Model<>();
		CompoundPropertyModel<User> compound = new CompoundPropertyModel<>(model);
		TextField<String> tf = new TextField<>("email", compound.bind("email"));
		tf.add(new PropertyValidator<>());
		add(tf);

an exception is thrown:

Last cause: Could not resolve Bean Property from component: [TextField [Component id = email]]. (Hints:) Possible causes are a typo in the PropertyExpression, a null reference or a model that does not work in combination with a IPropertyResolver. Model : Model:classname=[org.apache.wicket.model.PropertyModel]:nestedModel=[Model:classname=[org.apache.wicket.model.CompoundPropertyModel]:nestedModel=[Model:classname=[org.apache.wicket.model.Model]:object=[null]]]:expression=[email]
WicketMessage: Error attaching this container for rendering: [UserPanel [Component id = formPanel]]

without this line:

tf.add(new PropertyValidator<>());

everything works