Hi,
first at all I have to say I like the new Grid API. It seems very flexible and I was looking to use it for a long time. I want to update my old nested table solution which isn’t working good at all.
I have a list of beans I want to visualize (no editing needed, it’s read only).
Class A {
Date date;
String name;
Set<B> bs;
}Class B {
A a;
String field;
String fieldValue;
}So my Idea is to build a table like this:
DATE | NAME | B
| | field | fieldValue
---------------------------------
5.3 | ab | f1 | 3
| | f2 | hi
| | f3 | test
7.6. | ab | f2 | hello
| | f3 | test againI hope you got the idea 
With table I built a table inside a table. That had the bad side effect the inner table columns are not sized same exactly. Also there was a repeating header. With Grid I hoped to have some ways to achieve this. So after some disillusioning experiements (yeah I know, Grid and Table are row/bean based) I tried to nest Grid like this
getColumn("bs").setRenderer(new GridRenderer(), new SetToGridConverter())
class GridRenderer extends AbstractRenderer<Grid>the SetToGridConverter creates a Grid at convertToPresentation
The exception I get is “Cannot remove converter, as renderer’s presentation type com.vaadin.ui.Grid and column’s model java.util.Set type aren’t directly compatible with each other”.
Do you have an idea how I could solve this issue or do you have a nice workaround?
I want to show a collection or a collection structured for each item inside a Grid.
Thanks a lot!
