Binding between Vaadin 7 and 8

Vaadin 6 / 7 / 8
1

Hello,
In my Vaadin 7 project, I have something very like the below code ( note the simplicity of it ):

[code]
public class FakeClass {
protected final TextField description = new TextField(“Description”);
private final TextField revision = new TextField(“Revision”);
private final FormCheckBox consignment = new FormCheckBox(“Consignment”);
protected final ComboBox notificationPreference = new ComboBox(“Notification Preference”);

public FakeClass() {
    description.setNullRepresentation("");
    description.setReadOnly(true);
    description.setMaxLength(45);
    description.addStyleName("partDescription");

    revision.setNullRepresentation("");
    revision.setReadOnly(true);

   // Setup notificationPreference dropdown - not important to my question, so removed

  FormLayout form1 = new FormLayout();
  form1.addComponents( description, revision, notificationPreference, consignment );
}

public void setData( FakeBean data )
{
         fieldGroup = BeanFieldGroup.bindFieldsUnbuffered(data, this);
}

}
[/code]Most of the Vaadin 7 documentation for some reason uses a much more complex method, but this method was used a lit inf a demo program Vaadin provided, and it worked well for me, so I used it. Of special interest is that in the simplest case, the FormCheckBox, I only had to create the field, I did not have to do anything else to get it to bind to the corresponding value in data bean. From what I have seen of the Vaadin 8 documentation, it does not offer such simplicity, such a short solution for such a simple case. Am I missing something?

I have a LOT of code like this, so trying to see if I can simplify the conversion from Vaadin 7 to 8 somehow.

2

I think you are looking for

Binder

 and specifically the method

binder.bindInstanceFields(this);

 within it. It will automatically match the bean fields against the class fields, so if FakeBean has

getConsigment



()

 and

setConsigment()

, it would be bound to

FormCheckBox



consigment

. You can see an example of this at
https://vaadin.com/docs/v8/framework/datamodel/datamodel-forms.html
 under the topic
"Using Binder with Declarative Layouts "
. I know you are not using Declarative format but the same rules should apply still.

3

Ok, totally missed your post. Got side tracked by another project. Thanks so much for pointing that out. That will make converting to v8 a little easier in some cases for me. I have lots and lots of forms in my app, so the thought of doing all that manual work for such simple cases was not appealing. I guess I missed that in the documentation because it was at the bottom - did not scroll down far enough, or something like that.