Andrew's jsf-comp works. which uses AjaxAnywhere and extending tree2
classes.
I also implemented tree2 lazy loading using Ajax4JSF, without needing to
extend any tree2 classes.
either way, it ways.
William Huang
Product Development Team
"Jiang, Jane
\(NIH/NCI\) [C]"
<[EMAIL PROTECTED] To
.gov> "MyFaces Discussion"
<[email protected]>
09/07/2006 04:41 cc
PM
Subject
RE: tree 2 -- lazy loading.
Please respond to
"MyFaces
Discussion"
<[EMAIL PROTECTED]
ache.org>
I found your blogs very useful. It looks like I can overwrite the
getChildrenCount() method of my tree node to get around the problems I
have. I never used AJAX. How complicated is it to plug in AjaxAnywhere?
Many thanks for your help,
Jane
-----Original Message-----
From: Andrew Robinson [mailto:[EMAIL PROTECTED]
Sent: Thursday, September 07, 2006 4:31 PM
To: MyFaces Discussion
Subject: Re: tree 2 -- lazy loading.
FYI:
I also published this code in the jsf-comp project at:
http://sf.net/projects/jsf-comp
It is under the AjaxAnywhere package:
http://sourceforge.net/project/showfiles.php?group_id=137466&package_id=197375
On 9/7/06, Andrew Robinson <[EMAIL PROTECTED]> wrote:
> I have a WIKI on how to do lazy loading from an external source (web
> service, database, etc.):
>
>
http://andrewfacelets.blogspot.com/2006/06/myfaces-tree2-creating-lazy-loading.html
>
> On 9/7/06, Jiang, Jane (NIH/NCI) [C] <[EMAIL PROTECTED]> wrote:
> > I've been using the 2nd method of tree2 lazy loading I learned from the
wiki page. I overwrote the getChildren() method to load in the children.
It works fine. I am very surprised that the tree slowed down.
> >
> > I tried to track down the problem and found that every time I try to
expand one node, the getChildren() method gets called for all visible
nodes. This behavior defeated half of the purpose of lazy loading since
the sibling nodes actually get loaded right away. So we are actually
loading one layer at a time, not one node at a time. To make the matter
worse, if a node has no child nodes after the first round, the
super.getChildren().size() == 0 is always true. So we repeatly goes to the
database and try to find more children for those nodes.
> >
> > Has any one found a way to work around this problem? Is there a better
way to do lazy loading?
> >
> > Thanks,
> >
> > Jane
> >
> >
> > -----Original Message-----
> > From: Andrew Robinson [mailto:[EMAIL PROTECTED]
> > Sent: Monday, July 17, 2006 6:57 PM
> > To: MyFaces Discussion
> > Subject: Re: tree 2 -- lazy loading.
> >
> >
> > Check the archives. You will see my post about a lazy-loading AJAX
> > tree for jsf-comp
> >
> > On 7/17/06, [EMAIL PROTECTED] <[EMAIL PROTECTED]> wrote:
> > > Quick question:
> > >
> > > Is the MyFaces Tree2 lazy loadable? Any examples anywhere?
> > >
> > > Thanks in advance,
> > >
> > > --Brad.
> > >
> >
>
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