----- Original Message -----
Sent: Tuesday, June 13, 2006 9:51
AM
Subject: Re: [flexcoders] Convert AJAX to
Flex?
Anatole, you might want to look into Atlas, Backbase, Spry, etc (Ajax
frameworks). None of these were available 5 years ago and a lot of the extra
code is done for you.
On 6/13/06, Anatole
Tartakovsky <[EMAIL PROTECTED]> wrote:
Tom, Google
uses very small _javascript_ libraries obsuficated to smallest
size libraries, cached, and often claims the product is
"beta". They have huge networking infrastructure to insure highest
performanc/reliability that is out of reach for 99% of the
competition. They are delivering production components (Toolbars, etc)
not as AJAX, but activeX and plugins. If you are building few screens
with functionality that has to be delivered to billions of people, use
AJAX. If you have to build APPLICATION - with hundreds of pages, reports,
dashboards, etc. please read on.
RIA requires a lot of client side
code. Compiled Framework.swc is 2MB , the UI-only sources are over 7MB.
The UI portion of framework we have written in 1999-2002 was over
3MB - including DataGrid, Report, and 70 other
controls.
Robustness and performance of _javascript_: It is too slow
and there is no machanism in the browser to insure the competeness of
_javascript_ downloads. You do not get exception if _javascript_ has not
been loaded. There is no way to recover other then wrap code with
watchdog code and try to check if the secondary code was loaded/try to
reload otherwise. Of course, there is no guarantee that watchdog code is
loaded either. As a result, even the slightest problems on the
network level require huge efforts on the framework level. Even if
cached, _javascript_ has to be parsed and pre-"compiled" on every page
refresh. Add browser incompatibilities, typing errors that have not been
caught by compiler because there is no compiler/strong code checking) and
add really big application code base and you will get my point.
It
is all curable on the system level. For demanding applications we had to
develop following system components outside the browser (just to
support AJAX and business needed functionality missing in the
browser) 1. reliable pluggable protocol on the top of HTTP(s) to support
guaranteed delivery/caching of data and code 2. cached factories for
_javascript_ to allow faster instantiation of client-side _javascript_ 3.
print tempates enabler to allow full control of the printing
environment without browser limitations. The list goes on and
on
Bottom line, serious AJAX apps require Flash Player equivalent.
You can try to build it in _javascript_, but after trying for 5 years I
began to think it is unrealistic. We tried to get browser makers adopt
the forementioned enhancements, but they are pusing alternatives to AJAX
of their own, so Flash seems the only option with enough market
penetration.
Sincerely, Anatole Tartakovsky
-----
Original Message ----- From: "Tom Chiverton" <[EMAIL PROTECTED]> To:
<flexcoders@yahoogroups.com> Sent:
Tuesday, June 13, 2006 4:55 AM Subject: Re: [flexcoders] Convert AJAX to
Flex?
> On Tuesday 13 June 2006 02:16, Anatole Tartakovsky
wrote: >> framework) and switched to Flex after it became obvious
that AJAX is not >> rich/robust enough for enterprise applications.
> > Quick, tell google :-) > Seriously, Flex is quicker
to work with, but DHTML/AJAX is perfectly > robust. > >
-- > Tom Chiverton > >
**************************************************** > > This
email is sent for and on behalf of Halliwells LLP. > >
Halliwells LLP is a limited liability partnership registered in
England > and Wales under registered number OC307980 whose registered
office address > is at St James's Court Brown Street Manchester M2
2JF. A list of members > is available for inspection at the
registered office. Any reference to a > partner in relation to
Halliwells LLP means a member of Halliwells LLP. > Regulated by the
Law Society. > > CONFIDENTIALITY > > This email is
intended only for the use of the addressee named above and > may be
confidential or legally privileged. If you are not the addressee
> you must not read it and must not use any information contained in
nor > copy it nor inform any person other than Halliwells LLP or the
addressee > of its existence or contents. If you have
received this email in error > please delete it and notify Halliwells
LLP IT Department on 0870 365 8008. > > For more information
about Halliwells LLP visit www.halliwells.com. > > We
are pleased to announce that Halliwells LLP has been voted AIM Lawyer
> of the Year at the 2005 Growth Company
Awards > > > > > -- > Flexcoders Mailing
List > FAQ: http://groups.yahoo.com/group/flexcoders/files/flexcodersFAQ.txt
> Search Archives: http://www.mail-archive.com/flexcoders%40yahoogroups.com >
Yahoo! Groups
Links > > > > > > > > >
------------------------
Yahoo! Groups Sponsor --------------------~--> Protect your PC from
spy ware with award winning anti spy technology. It's free. http://us.click.yahoo.com/97bhrC/LGxNAA/yQLSAA/nhFolB/TM --------------------------------------------------------------------~->
-- Flexcoders
Mailing List FAQ: http://groups.yahoo.com/group/flexcoders/files/flexcodersFAQ.txt Search
Archives: http://www.mail-archive.com/flexcoders%40yahoogroups.com Yahoo!
Groups Links
<*> To visit your group on the web, go
to: http://groups.yahoo.com/group/flexcoders/
<*>
To unsubscribe from this group, send an email to:
[EMAIL PROTECTED]
<*>
Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
-- John
C. Bland II "I do what I can do when I can do it." - Chris Tucker, Money
Talks http://www.gotoandstop.org
- Home of FMUG.az
__._,_.___
--
Flexcoders Mailing List
FAQ: http://groups.yahoo.com/group/flexcoders/files/flexcodersFAQ.txt
Search Archives: http://www.mail-archive.com/flexcoders%40yahoogroups.com
SPONSORED LINKS
YAHOO! GROUPS LINKS
__,_._,___
|