Sean,
To check your statement that you strenuously disagree
that tree2 doesn't work in a dynamic environment -- I
guess we have to decide what 'dynamic' means.. ;-)
A couple issues I would describe as dynamic which don't
currently work are:
1 - Being able to add/remove nodes on the fly.
Currently I think doing things like changing the
text of a tree node works (does for me, anyway)
If you setup an example of how to do this, you'll
quickly see the problems.
2 - Selecting a node from the model. People want to have
a wizard which adds a node to the tree & they want to
have it automatically selected. Being able to
arbitrarily select any node in the tree, from twiddling
the model (and also have the path to it expanded) is a
very real use-case.
-- Jon
On Apr 19, 2005, at 7:22 AM, Sean Schofield wrote:
Right we have a JIRA issue on that one I believe. Thats not the
particular problem being discussed here though. Mihir's problem is
that he is not seeing his new data. I believe in your test scenario
you were randomly changing your data between requests. While that
might simulate a real world scenario, its much more likely that your
data will not change between requests. So I think its a bit of an
overstatement to say "I can't see that it works at all ..."
Your problem is a bit complicated and you would have the same problem
in h:dataTable as well by the way. I think we talked about issuing a
warning in your case right? There are other possibilities to consider
as well such as a preserveDataModel attribute when you *don't* want to
change the data between posts.
sean
On 4/19/05, Rob Decker <[EMAIL PROTECTED]> wrote:
I get a fatal exception when the data changes and the user clicks a
node
that no longer exists so the tree never gets a chance to render the
new tree
node. Given that, I can't see that it works at all in a dynamic
environment.
----- Original Message -----
From: "Sean Schofield" <[EMAIL PROTECTED]>
To: "MyFaces Discussion" <[email protected]>
Sent: Monday, April 18, 2005 11:14 PM
Subject: Re: Refreshing the view/component/page
I would agree that there are some outstanding issues in JIRA to be
resolved but I would strenuously disagree that tree2 doesn't work very
well in a dynamic environment.
Mihir, I take it you are posting your results after you change your
list box right? (Otherwise how could the data possibly change?)
Tree2 will show whatever data is set through whatever bean you have
bound to the value attribute. This bean is a TreeNode (your root
node) that contains the other nodes. We're looking at making tree2
more flexible so that you can specify a model but that is really not
relevant to the problem IMO.
The tree renders whatever data is associated with the value binding
expression at the time or the RenderResponse phase. If its not
showing the right data, that is most likely your fault and not the
fault of tree2. I'm assuming that you are using server-side toggle
b/c you say the data changes when you open the root node. Most likely
you have an action listener or something that is causing your backing
bean (probably session scope) to update itself and then you get the
correct data.
Does this sound familar or do I have this wrong? Tree2 can handle
dynamic data no problem but it needs to know about the changes in the
data. If you are using session scope try changing to request scope so
the bean is reconstructed with the latest data during the
RenderResponse phase. This is guaranteed by the JSF lifecylce.
HTH,
sean
On 4/18/05, Jon Travis <[EMAIL PROTECTED]> wrote:
Mihir,
We are having similar problems with our tree usage
here. Unfortunately tree2 doesn't work very well
in a dynamic environment, when the contents & labels
of the tree are changing. I think there are some
open JIRAs about it.
Would be nice to have this working.
-- Jon
On Apr 12, 2005, at 5:38 AM, Mihir Solanki wrote:
It is showing the closed tree with root node having old value only.
When I click on the root node the tree gets expanded and then I am
getting the new data.
Mihir
-----Original Message-----
From: Rob Decker [mailto:[EMAIL PROTECTED]
Sent: Tuesday, April 12, 2005 6:05 PM
To: MyFaces Discussion; [EMAIL PROTECTED]
Subject: Re: Refreshing the view/component/page
When you say it's not showing the updated data do you mean it's
showing a new, closed tree (the root node of the new tree, not
expanded) or that you see the old tree data still on the page but
when
you click it suddenly refreshes?
----- Original Message -----
From: Mihir Solanki
To: 'MyFaces Discussion'
Sent: Tuesday, April 12, 2005 8:28 AM
Subject: FW: Refreshing the view/component/page
Hi,
I have two components in my JSF page
1. select one list box
2. tree2
Now based on the selection changes in the select box I want to
updated
the whole tree (basically selected item should come as a root node
of
the tree whenever selection change event occurs in the select one
list
box).
I have two backing beans implemented for select one box and tree2. I
am also getting selection change event and so I am updating the tree
data in that event.
The problem is when I change the selection in the list box, my tree
is
not showing the updated data, but when I click on the root node of
the
tree it is showing me the updated data then further.
So my question is, is there any way so I can update the
view/Page/component from backing bean so I can always be rest assure
that whatever I have set I will get in UI.
Thanks
Mihir Solanki
Patni Computer Systems Ltd.
Tel : 91 79 23240905Ext : 413
http://www.patni.com
World-Wide Partnerships. World-Class Solutions.
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