just dont put data fetching in getter
i assume that user must click link or button to see your page with
datatable.
so, u can perform data fetching in action binded to that buttotn (or link)
- that action returns string that is "maped" to your view.
your action does ".... bla bla populating array" and set bean's datamodel
getter ONLY gets that model
btw: your code wont work if user enter on same page second time
obviously if(array != null) is true so no "bla bla" is performed
Sławek Sobótka
Hello!
As I understand, MyFaces (and core JSF too) evaluates value getter for
DataTable twice (or three times if preserveDataModel == true). If we are
getting static data there is no problems, but if we'are populating data
from SQL we get a big problems (as query are running twice). For the
time present I found no another solution as:
public Collection getDatatableValue() {
if(array != null)
return array;
array = new ArrayList();
.... bla bla populating array
return array;
}
Same may be done with DataModel. Want to know what other people doing in
this sutiations? May be there is another solution?
With respect,
Boris
