ComboBox with BeanFieldGroup ?

Vaadin 6 / 7 / 8 Framework Data Binding
1

I’m trying create a ComboBox component using BeanFieldGroup in my application, but still can’t do this works. I tried create a combobox first and after add this combobox in buildAndBind but doesn’t work also.



/** person's bean */
@Entity
public class Person{
@Id @GeneratedValue
private Integer id;

@NotNull @NotEmpty
@Size(min=5, max=50, message="insert first name")
private String firstName;

@NotNull @NotEmpty @Email
private String email;

//male or female
private String gender;

//get and set
}

/** app */
public class PersonView extends CustomComponent{
      private final BeanFieldGroup<Person> binder = new BeanFieldGroup<Person>(Person.class);
      private Person bean = new Person();
      private ComboBox gender;

public PersonView(){
     VerticalLayout vLayout = new VerticalLayout();
     Field<?> field = null;
     field = binder.buildAndBind("Gender", "gender", ComboBox.class);
     gender = (ComboBox)binder.getField("gender");
     gender.addItem("Male");
     gender.addItem("Female");
     vLayout.addComponent(gender);
     }
}

Exception:


Caused by: com.vaadin.data.fieldgroup.FieldGroup$BindException: Unable to build a field of type com.vaadin.ui.ComboBox for editing java.lang.String at com.vaadin.data.fieldgroup.FieldGroup.build(FieldGroup.java:1067) at com.vaadin.data.fieldgroup.FieldGroup.buildAndBind(FieldGroup.java:1039) at br.ind.ibg.views.CurriculumView.buildLayout(CurriculumView.java:50) at br.ind.ibg.views.CurriculumView.<init>(CurriculumView.java:32) at br.ind.ibg.views.LoginView.buttonClick(LoginView.java:84) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:606) at com.vaadin.event.ListenerMethod.receiveEvent(ListenerMethod.java:508) ... 37 more

How I do this ?

2

Hello There,

I have done some thing like this,

   ComboBox gender = new ComboBox();
    gender.addItem("Male");
    gender.addItem("Female");
    binder.bind(( gender, "gender");

I don’t know even I faced some thing similar, so have done some thing similar to the way shown in the above snippet!

Thanks.

3