Mike Kienenberger schrieb:
On 3/10/06, Laurie Harper <[EMAIL PROTECTED]> wrote:
Werner Punz wrote:
Afterwards I also contacted Mario who does the current refactoring of
the addresource, and he said he would prefer to have this stuff in the
body due to future performance refactoring reasons.
So I am going to move the require and component includes down to the
body while the dojo include still stays in the head for now.
Hmm, I thought there were XHTML compliance issues with having <script>
tags in the body? That's why I queried this in the first place :)
Although it appears to work, valid or not.
I believe the reason for this is to remove the need for the Extensions
filter. While there's some question as to the standards compliance,
Adam Winer reported that ADF Faces also does the same thing for the
same reason -- put the scripts in the body to avoid the need for a
servlet filter.
Actually to my knowledge of the extension filter mechanisms this does
not have anything to do with it.
The main purpose of the filter is a resource loader, the filter more or
less just serves scripts upon requests directly from the jar,
The pushing down to the body adds another performance improvement point.
As is if you want to push something into the head you have to keep an
extre pre gathering step for request singletons.
Once a component says I want to have something in the head you have to
collect the data first and then at a later stage do the rendering once
all the components have pushed all their data into the singleton.
If you can rely on not having such mechanisms but having everything
rendered on the fly (which is only possible if you push everything into
the body) means you can skip the extra step in the rendering phase and
start the rendering per component, which means a straig runtime
complexity of n up to n log(n) instead of 2n up to 2n log(n) for the
rendering (depending of the operations).
Also it means way less mem consumption since the code is written as
it is called instead of having to go through an extra data collection
subphase.
But back to the topic
Well as for now the main dojo initialisation still is performed in the
head but it will be moved into the body in the long run as well, the
require has to be moved to already mentioned reasons.
