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i have tried to use the data scroller with a table
where i can add,delete and modify rows but
the application behaves very strange
so i have supposed that the data scroller is
ok only for static tables.
If you try to not set preserve data model and set
state mainteined on the server probably the paging is correct
but sometimes you can obtain a index out of bound
exception.
----- Original Message -----
Sent: Monday, June 06, 2005 2:42 PM
Subject: DataTable and DataScroller
Problem.
HI,
I�m facing the following problem :
I have an
x:dataTable that display rows from a database and an x:dataScroller to
navigate between pages, in that dataTable for every row I have an checkbox
that the
user will use to delete rows (Like an web mail).
The first
strange behavior is that if the property preserveDataModel is set to true,
and the backing bean has the setter method of the collection associated
with the
dataTable (ie. #{GroupBean.current_group.group_users}), The first
page is displayed correct,
but I get an exception when I attempt to go to
the second page, the exception is :
Attempt to coerce a value of type
"br.com.venus.model.valueobjects.UserVO"
to type "java.util.Collection".
If I remove the setter, the exception is gone, but I
cannot remove the
setter because the object was populated by Hibernate.
If I change the
preserveDataModel to FALSE, the exception is gone, BUT, the checkboxes
does
not mantain the state between page changes, if I check an row in the first
page,
then move to the second page, and back to first page, the row is not
selected.
This looks to me that between page navigation, the scroller
is not setting the value
of the checkboxes until the preserveDataModel
property is set, but I cannot undestand
why the setter of the collection
affect the behavior of the scroller component.
All my backing beans are
session scope, I tried to user x:saveState and does not
work too. Myfaces
version is 1.09.
And sorry for my bad english.
Any
suggestions??
thanks in advance
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