One way I thought of is to have the backing bean that contains the @DataModel have a select method that calls the injected bean's select method.

For example :

class Main {
 @In(create=true) ItemEditor itemEditor;
 @DataModel List items;
 @DataModelSelection private Item selectedItem;
 String selectItem() { itemEditor.selectItem(selectedItem); }
}

class ItemFinder {
 @In(create=true) ItemEditor itemEditor;
 @DataModel List foundItems;
 @DataModelSelection private Item selectedItem;
 String selectItem() { itemEditor.selectItem(selectedItem); }
}

class ItemEditor {
 Item instance;
 public String selectItem(Item item) {
 instance = item;
 return "editItem";
 }
}

The first solution would work except that you'd have to make sure that the the @DataModel's names are all matched up. And it wouldn't work in cases where you have multiple items in a single bean, since that'd require two different selectedItem in the receiving bean.

However, I hadn't realized that you could actually do it that way. I think it'll come in useful later.

The second way would work, and is definitely prettier than the way I did it. I hadn't realized you could transfer data that way.

Thanks

- Luther

As to the selectedItem...

It works, as long as you make sure that the bean is either a stateful session bean or it's in the page (or longer) scope and the same goes for the scope on the @Out annotation for the selectedItem.

The outjection is tougher than you'd think...

The problem is that I have 3 beans that will outject the selectedItem object...
I tried it with both the Page scope and the Session scope. Apparently, all 3 of the beans will outject the selectedItem, which means that a random item will get outjected... (in which case I get a NPE).

I tried the stateless/event scope, which doesn't propagate the selectedItem...

I also tried the conversation scope which doesn't propagate the selectedItem...

FYI :

@Stateful
class Bean1 {
 @DataModel private List<Item> itemList;
 @DataModelSelection("itemList")
 @Out(required=false,scope=ScopeType.SESSION) private Item selectedItem;
}
@Stateful
class Bean2 {
 @DataModel private List<Item> itemList;
 @DataModelSelection("itemList")
 @Out(required=false,scope=ScopeType.SESSION) private Item selectedItem;
}
@Scope(ScopeType.SESSION)
class Bean3 {
 @DataModel private List<Item> itemList;
 @DataModelSelection("itemList")
 @Out(required=false,scope=ScopeType.SESSION) private Item selectedItem;
}

class ReceivingBean {
 @In(required=false) private Item selectedItem;
 @Begin(nested=true)
 public String selectItem() {
 }
}