Jsf and getter call

Question

hi
I made a jsf page with a selectOneMenu component. here is the code:
<h:form>
<f:view>               
     <h:selectOneMenu id="pippo" immediate="true">     
         <f:selectItems value="#{user.items}" />               
     </h:selectOneMenu>               
</f:view>
</h:form>the getter method for 'items' add "select" to the menu
here is the code
public SelectItem[] getItems() {
     System.out.println("getItems");
     items[0] = new SelectItem("-1", "select");
     System.out.println("end getItems");
     return items;
}but if I check the log i can see 2 calls for getItems method
and these 2 calls are in the same fase (render response)
for example while loading the page:
[cut]
09:36:01,046 INFO [STDOUT] BeforePhase: RENDER_RESPONSE 6
09:36:02,953 INFO [STDOUT] getItems
09:36:02,953 INFO [STDOUT] end getItems
09:36:02,953 INFO [STDOUT] getItems
09:36:02,953 INFO [STDOUT] end getItems
09:36:02,968 INFO [STDOUT] AfterPhase: RENDER_RESPONSE 6
[cut]
why 2 calls?
i really don't understand.
what if I have an heavy getter with db connection and so on ?
thansk a lot!

Answer 1

giunad wrote:
even if I don't figure why I have 2 calls in the same phase (the link you sent me talks about several calls during several phases..) ,
where should I put the logic code?Definitely not in the getter. Or you must introduce lazy loading in there. Usual places are the constructor or initialization block of the bean.
for example 2 selectOneMenu on cascade where the content of the second menu is function of the first selection ?
ie country and state, parent and son, category and subcategory.. and so on.In this case, you may find this article useful: [http://balusc.blogspot.com/2007/10/populate-child-menus.html]