Re: Binding Driver To A List

On Monday, January 7, 2013 12:58:36 AM UTC+1, paran...@gmail.com wrote:

Hello all,

first of all I'm sorry if I sound incompetent but the truth is I'm fairly new to GWT. So here's what I want to do: I have a database with different itemtypes (Product, User, Country, etc...).
I want to make a GWT application that edits these item types. For that purpose I have created a dto called EntityDto which contains a list of SectionDto, which in itself contains a list of PropertyDto. So the PropertyDto is a representation of each of the item's properties (Product.code for instance). The PropertyDto has the following signature:

public class PropertyDto implements Serializable {

  private String id;
  private String value;

  /* getters/setters */
....
}

So I have managed to display a form with TextField for the Entity's properties and their values. Now I want to submit the changed values and persist them in the database. As I was reading on the internet this is achieved using a combination of a Driver and Editor. My problem is that I don't have a real POJO to use any of the existing drivers. All I want is to map the field with id code, for instance, to the String in EntityDto.PropertyDto.value (for whichever PropertyDto has the same id).

Is there any solution to this? How would you create a form that is not backed by a bean but instead by a dynamic map or a list for instance?

In any case, you'll have to do it manually.

If you need to use the Editor framework, and/or your scenario is complex enough to make it worth it, then you can use a ValueAwareEditor<SectionDto>: in setValue you loop over the PropertyDto-s and push their values to the corresponding text box, and in flush() you do the reverse (from text box to PropertyDto).

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