BTW, great work on the jsf-comp aatree. It gave me a good understanding on
the tree2 component before I implemented using ajax4jsf. I only implement
the lazy loading using ajax4jsf because we are already using it for other
components.
William Huang
Product Development Team
"Andrew Robinson"
<andrew.rw.robins
[EMAIL PROTECTED]> To
"MyFaces Discussion"
09/07/2006 04:59 <[email protected]>
PM cc
Subject
Please respond to Re: tree 2 -- lazy loading.
"MyFaces
Discussion"
<[EMAIL PROTECTED]
ache.org>
I extend the tree2 classes not because of AJAX but to implement a lazy
loading where the children nodes are not known until they are asked
for (as in a database storage example). So the extended classes for
tree2 will also work with Ajax4JSF, I just had more experience with AA
at the time
On 9/7/06, William Huang <[EMAIL PROTECTED]> wrote:
> 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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