Getting outjected object's attributes

[ferd0]

This is a siplified problem of mine. I would like to see, if I am doing anything conceptually wrog.

This is my object (simplified):

Hotel
 int nrOfStars;
 @OneToMany
 List<Room> rooms;

I outject an instance of this object (or I use it in statefull session bean), and I try to show it's attributes in xhtml.

But I can display hotel's nubmer of stars, but I can not access list of rooms, although they are present (in database). I add rooms with "hotel.getRooms().add(room)".

I see correct output of

<h:outputText value="#{hotel.nrOfStars}" />

, but I can't see proprely

<h:outputText value="#{fn:length(hotel.rooms)}" />

(I get always "0").

How can I access a list of objects in my outjected object? It works if I outject the list itself, but not if i try to access the list "in outjected parent object".
I hope I've explained the problem properly.

Ferd0

[arussel]

are you looking for: #{hotel.rooms.size()} ?
(using jboss el)
alex

[ferd0]

Actually, I would like to do something like this:

<h:dataTable value="#{hotel.rooms}" var="room">
 <h:column>
 <h:outputText value="#{room.number}" />
 </h:column>
</h:dataTable>

but it is not working.

The problem is, that if I would outject list "rooms", and use

<h:dataTable value="#{rooms}" var="room">

it would work, but the version with "hotel.rooms" is not working.

I don't know if I'm using JBoss EL (I am using templates generated by seam-gen).

My environment: JBoss AS 4.0.5, JBoss Seam 1.2.1.

[arussel]

This defenitly works:

<h:dataTable value="#{hotel.rooms}" var="room">
 <h:column>
 <h:outputText value="#{room.number}" />
 </h:column>
</h:dataTable>

If it is not working then you have a typo somewhere.
1. first check your getter/setter for rooms.
2. output #{hotel.rooms} to see if you got a list
3. use a datable as you did and just output #{room}

alex