subject:"RE\: Real time data display in a struts based application."

Re: Real time data display in a struts based application.

2007-03-02 Thread Maya menon

Musachy,

Yes, we use struts 1.x, and I really dont think we can download any of these
external libraries.

So said so, I have to write javascript etc to achive these AJAX timed
events..
Any one has done it to achieve it ?

I believe javascript,XML etc are needed.. any examples.

Musachy Barroso [EMAIL PROTECTED] wrote:
Oops...I can't help it, I always assume we are talking about S2. If you are
using S1, pick an ajax framework, most of them have a Div tag like the one
on S2. See Frank's email for details on one of them.

musachy

On 2/28/07, Maya menon wrote:

Thanks Musachy for your response.
We use Struts 1.x right now.. Guess we have to update..
Please send me if yu have any examples/links..

Musachy Barroso wrote:
You can refresh the page, but that would probably be annoying to the
user,
not to mention that data entered on fields will most likely be lost. Using
a
div you can update just the part of the page that is important. Using the
div tag in struts:

theme=ajax
href=%{ajaxTest}
updateFreq=3000/

that will make your div reload the content from AjaxTest.action every
3000
milliseconds. There are many frameworks available, so you can pick one
that
fits your needs. For simple scenarios, the div tag will do.

musachy

On 2/28/07, Maya menon wrote:

Thank you both for your responses.

So AJAX is the technique I should refer. Anyone know of any examples /
somethings.

Also, my colleague asked me this question when I talked to him about a
timed AJAX event. Why cant we simply refresh the jsp page ? Why should
we
use AJAX ? so, whats the real advantage of using an AJAX timed event to
a
normal JSP/HTML refresh ?

Maya

Musachy Barroso wrote:
The div tag when used on the ajax theme, has a timer that will make it
refresh its content from the url specified in the href attribute,
examples
available in showcase and here:

http://struts.apache.org/2.x/docs/ajax-tags.html

musachy

On 2/28/07, Frank W. Zammetti wrote:

Well, if you can live with not literally pushing to the client, this
is
the sort of application AJAX was made for. Have a timed event, every
few
seconds maybe, whatever your tolerable definition of real time is,
that
makes and AJAX request to check for new data and display it when
found.
Pretty easy.

Have a peak at the AjaxParts Taglib (APT) in Java Web Parts (JWP):

http://javawebparts.sourceforge.net

http://javawebparts.sourceforge.net/javadocs/javawebparts/ajaxparts/taglib/package-summary.html

The benefit is that it will allow you to do this, since it has a timed
AJAX event function, and will save you from having to write any
Javascript
yourself (most likely).

Whether you go with APT or not, AJAX is probably the first thing you
want
to look at.

Frank

--
Frank W. Zammetti
Founder and Chief Software Architect
Omnytex Technologies
http://www.omnytex.com
AIM/Yahoo: fzammetti
MSN: [EMAIL PROTECTED]
Author of Practical Ajax Projects With Java Technology
(2006, Apress, ISBN 1-59059-695-1)
Java Web Parts - http://javawebparts.sourceforge.net
Supplying the wheel, so you don't have to reinvent it!

On Wed, February 28, 2007 3:54 pm, Maya menon wrote:
All,

Have a design issue here. We have a web based application and have
2000
concurrent users. The requirement is: when new data comes on Oracle
database for users this data has to be sent to the online users on a
real time basis. Someway, the real time data needs to be pushed to
the
users without the client doing a reload/refresh etc.

What technologies can be used here ? Can anyone provide me some
suggestions ?

The users login to the application using a web page, this is a web
based
J2ee application using struts, Oracle database.

Thanks,
Maya

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Re: Real time data display in a struts based application.

2007-03-02 Thread Dave Newton

--- Maya menon [EMAIL PROTECTED] wrote:
 I really dont think we can download any of these 
 external libraries. 

I would highly recommend using a library.

If nothing else you'll want Prototype (or a variant,
like prototype-lite etc.) for writing the Javascript
if for no other reason than to avoid writing
cross-browser Javascript, which is just no fun.

d.



 

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Re: Real time data display in a struts based application.

2007-03-01 Thread Maya menon

Ok, got the difference.

Now being a new bie to AJAX, what are the best techiques that should be used
to design a well designed web app ?

Again, my page has to show the new data thats being added to database.

Frank told about creating a timed AJAX event. Where can I get more details
regarding that ? Again will it be possible /scalable for 2000 concurrent users ?

Thanks

Adam Ruggles [EMAIL PROTECTED] wrote:
The difference between using AJAX and just refreshing a page is a well
designed AJAX application sends over just the information that is
needed. For a JSP/HTML page refresh you're sending more data over the
line. The key here is a well designed AJAX application.

Maya menon wrote:
Thank you both for your responses.

So AJAX is the technique I should refer. Anyone know of any examples /
somethings.

Also, my colleague asked me this question when I talked to him about a timed
AJAX event. Why cant we simply refresh the jsp page ? Why should we use AJAX
? so, whats the real advantage of using an AJAX timed event to a normal
JSP/HTML refresh ?

Maya

http://struts.apache.org/2.x/docs/ajax-tags.html

musachy

On 2/28/07, Frank W. Zammetti wrote:

Well, if you can live with not literally pushing to the client, this is
the sort of application AJAX was made for. Have a timed event, every few
seconds maybe, whatever your tolerable definition of real time is, that
makes and AJAX request to check for new data and display it when found.
Pretty easy.

Have a peak at the AjaxParts Taglib (APT) in Java Web Parts (JWP):

http://javawebparts.sourceforge.net

http://javawebparts.sourceforge.net/javadocs/javawebparts/ajaxparts/taglib/package-summary.html

The benefit is that it will allow you to do this, since it has a timed
AJAX event function, and will save you from having to write any Javascript
yourself (most likely).

Whether you go with APT or not, AJAX is probably the first thing you want
to look at.

Frank

On Wed, February 28, 2007 3:54 pm, Maya menon wrote:

All,

Have a design issue here. We have a web based application and have

2000

concurrent users. The requirement is: when new data comes on Oracle
database for users this data has to be sent to the online users on a
real time basis. Someway, the real time data needs to be pushed to the
users without the client doing a reload/refresh etc.

What technologies can be used here ? Can anyone provide me some
suggestions ?

The users login to the application using a web page, this is a web

based

J2ee application using struts, Oracle database.

Thanks,
Maya

-
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Re: Real time data display in a struts based application.

2007-02-28 Thread Frank W. Zammetti

Well, if you can live with not literally pushing to the client, this is
the sort of application AJAX was made for. Have a timed event, every few
seconds maybe, whatever your tolerable definition of real time is, that
makes and AJAX request to check for new data and display it when found.
Pretty easy.

Have a peak at the AjaxParts Taglib (APT) in Java Web Parts (JWP):

http://javawebparts.sourceforge.net
http://javawebparts.sourceforge.net/javadocs/javawebparts/ajaxparts/taglib/package-summary.html

The benefit is that it will allow you to do this, since it has a timed
AJAX event function, and will save you from having to write any Javascript
yourself (most likely).

Whether you go with APT or not, AJAX is probably the first thing you want
to look at.

Frank

On Wed, February 28, 2007 3:54 pm, Maya menon wrote:
All,

Have a design issue here. We have a web based application and have 2000
concurrent users. The requirement is: when new data comes on Oracle
database for users this data has to be sent to the online users on a
real time basis. Someway, the real time data needs to be pushed to the
users without the client doing a reload/refresh etc.

What technologies can be used here ? Can anyone provide me some
suggestions ?

The users login to the application using a web page, this is a web based
J2ee application using struts, Oracle database.

Thanks,
Maya

-
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-
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Re: Real time data display in a struts based application.

2007-02-28 Thread Musachy Barroso

The div tag when used on the ajax theme, has a timer that will make it
refresh its content from the url specified in the href attribute, examples
available in showcase and here:

http://struts.apache.org/2.x/docs/ajax-tags.html

musachy

On 2/28/07, Frank W. Zammetti [EMAIL PROTECTED] wrote:

Well, if you can live with not literally pushing to the client, this is
the sort of application AJAX was made for. Have a timed event, every few
seconds maybe, whatever your tolerable definition of real time is, that
makes and AJAX request to check for new data and display it when found.
Pretty easy.

Have a peak at the AjaxParts Taglib (APT) in Java Web Parts (JWP):

http://javawebparts.sourceforge.net

http://javawebparts.sourceforge.net/javadocs/javawebparts/ajaxparts/taglib/package-summary.html

The benefit is that it will allow you to do this, since it has a timed
AJAX event function, and will save you from having to write any Javascript
yourself (most likely).

Whether you go with APT or not, AJAX is probably the first thing you want
to look at.

Frank

On Wed, February 28, 2007 3:54 pm, Maya menon wrote:
All,

Have a design issue here. We have a web based application and have
2000
concurrent users. The requirement is: when new data comes on Oracle
database for users this data has to be sent to the online users on a
real time basis. Someway, the real time data needs to be pushed to the
users without the client doing a reload/refresh etc.

What technologies can be used here ? Can anyone provide me some
suggestions ?

The users login to the application using a web page, this is a web
based
J2ee application using struts, Oracle database.

Thanks,
Maya

-
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RE: Real time data display in a struts based application.

2007-02-28 Thread Jose Maria Alvarez Rodriguez

Hi!
 Well, I think that the your technical design requirement can be developed 
using Ajax technologies. In J2EE we have e.g. DWR, http://getahead.ltd.uk/dwr/, 
to use Ajax inside web applications, but the problem could be the comunication 
server-client because the request to update data in client tier is thrown from 
server, this issue causes the need of a listener to attend server requests, in 
http://ajaxpatterns.org/Patterns#Browser-Server_Dialogue you can find 
information about dialogue patterns between client and server, also Ajax 
Patterns web site is a good way to start with ajax tecnologies.

That`s all¡ 

Regards, Ch.

--
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Departamento de I+D+I  -  Fundación CTIC
-Centro Tecnológico de la Información y la Comunicación-
E-mail: [EMAIL PROTECTED]
Tfno:+34 984 29 12 12
Parque Científico Tecnológico Gijón-Asturias-Spain
www.fundacionctic.org



-Mensaje original-
De: Maya menon [mailto:[EMAIL PROTECTED]
Enviado el: mié 28/02/2007 21:54
Para: Struts Users Mailing List
Asunto: Real time data display in a struts based application. 
 
All,
   
  Have a design issue here. We have a web based application and have 2000 
concurrent users. The requirement is: when new data comes on Oracle database 
for users this data has to be sent to the online users on a real time basis. 
Someway, the real time data needs to be pushed to the users without the client 
doing a reload/refresh etc. 
   
  What technologies can be used here ? Can anyone provide me some suggestions ? 
   
  The users login to the application using a web page, this is a web based J2ee 
application using struts, Oracle database. 
   
  Thanks,
  Maya

 
-
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Re: Real time data display in a struts based application.

2007-02-28 Thread Musachy Barroso

You can refresh the page, but that would probably be annoying to the user,
not to mention that data entered on fields will most likely be lost. Using a
div you can update just the part of the page that is important. Using the
div tag in struts:

s:url id=ajaxTest value=/AjaxTest.action /

s:div
theme=ajax
href=%{ajaxTest}
updateFreq=3000/

that will make your div reload the content from AjaxTest.action every 3000
milliseconds. There are many frameworks available, so you can pick one that
fits your needs. For simple scenarios, the div tag will do.

musachy

On 2/28/07, Maya menon [EMAIL PROTECTED] wrote:

Thank you both for your responses.

So AJAX is the technique I should refer. Anyone know of any examples /
somethings.

Also, my colleague asked me this question when I talked to him about a
timed AJAX event. Why cant we simply refresh the jsp page ? Why should we
use AJAX ? so, whats the real advantage of using an AJAX timed event to a
normal JSP/HTML refresh ?

Maya

Musachy Barroso [EMAIL PROTECTED] wrote:
The div tag when used on the ajax theme, has a timer that will make it
refresh its content from the url specified in the href attribute,
examples
available in showcase and here:

http://struts.apache.org/2.x/docs/ajax-tags.html

musachy

On 2/28/07, Frank W. Zammetti wrote:

Well, if you can live with not literally pushing to the client, this
is
the sort of application AJAX was made for. Have a timed event, every few
seconds maybe, whatever your tolerable definition of real time is,
that
makes and AJAX request to check for new data and display it when found.
Pretty easy.

Have a peak at the AjaxParts Taglib (APT) in Java Web Parts (JWP):

http://javawebparts.sourceforge.net

http://javawebparts.sourceforge.net/javadocs/javawebparts/ajaxparts/taglib/package-summary.html

The benefit is that it will allow you to do this, since it has a timed
AJAX event function, and will save you from having to write any
Javascript
yourself (most likely).

Whether you go with APT or not, AJAX is probably the first thing you
want
to look at.

Frank

On Wed, February 28, 2007 3:54 pm, Maya menon wrote:
All,

Have a design issue here. We have a web based application and have
2000
concurrent users. The requirement is: when new data comes on Oracle
database for users this data has to be sent to the online users on a
real time basis. Someway, the real time data needs to be pushed to the
users without the client doing a reload/refresh etc.

What technologies can be used here ? Can anyone provide me some
suggestions ?

The users login to the application using a web page, this is a web
based
J2ee application using struts, Oracle database.

Thanks,
Maya

-
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-
To unsubscribe, e-mail: [EMAIL PROTECTED]
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Re: Real time data display in a struts based application.

2007-02-28 Thread Michael Jouravlev


On 2/28/07, Maya menon [EMAIL PROTECTED] wrote:

  Also, my colleague asked me this question when I talked to him about a timed AJAX 
event. Why cant we simply refresh the jsp page ? Why should we use AJAX ? so, whats 
the real advantage of using an AJAX timed event to a normal JSP/HTML refresh ?


You can. Ajax makes UI smoother and more user-friendly. Not to say
that less data is transferred.

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Re: Real time data display in a struts based application.

2007-02-28 Thread Maya menon

Thanks Musachy for your response.
We use Struts 1.x right now.. Guess we have to update..
Please send me if yu have any examples/links..

Musachy Barroso [EMAIL PROTECTED] wrote:
You can refresh the page, but that would probably be annoying to the user,
not to mention that data entered on fields will most likely be lost. Using a
div you can update just the part of the page that is important. Using the
div tag in struts:

theme=ajax
href=%{ajaxTest}
updateFreq=3000/

that will make your div reload the content from AjaxTest.action every 3000
milliseconds. There are many frameworks available, so you can pick one that
fits your needs. For simple scenarios, the div tag will do.

musachy

On 2/28/07, Maya menon wrote:

Thank you both for your responses.

So AJAX is the technique I should refer. Anyone know of any examples /
somethings.

Also, my colleague asked me this question when I talked to him about a
timed AJAX event. Why cant we simply refresh the jsp page ? Why should we
use AJAX ? so, whats the real advantage of using an AJAX timed event to a
normal JSP/HTML refresh ?

Maya

http://struts.apache.org/2.x/docs/ajax-tags.html

musachy

On 2/28/07, Frank W. Zammetti wrote:

Well, if you can live with not literally pushing to the client, this
is
the sort of application AJAX was made for. Have a timed event, every few
seconds maybe, whatever your tolerable definition of real time is,
that
makes and AJAX request to check for new data and display it when found.
Pretty easy.

Have a peak at the AjaxParts Taglib (APT) in Java Web Parts (JWP):

http://javawebparts.sourceforge.net

http://javawebparts.sourceforge.net/javadocs/javawebparts/ajaxparts/taglib/package-summary.html

The benefit is that it will allow you to do this, since it has a timed
AJAX event function, and will save you from having to write any
Javascript
yourself (most likely).

Whether you go with APT or not, AJAX is probably the first thing you
want
to look at.

Frank

On Wed, February 28, 2007 3:54 pm, Maya menon wrote:
All,

Have a design issue here. We have a web based application and have
2000
concurrent users. The requirement is: when new data comes on Oracle
database for users this data has to be sent to the online users on a
real time basis. Someway, the real time data needs to be pushed to the
users without the client doing a reload/refresh etc.

What technologies can be used here ? Can anyone provide me some
suggestions ?

The users login to the application using a web page, this is a web
based
J2ee application using struts, Oracle database.

Thanks,
Maya

-
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-
To unsubscribe, e-mail: [EMAIL PROTECTED]
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Re: Real time data display in a struts based application.

2007-02-28 Thread Musachy Barroso

Oops...I can't help it, I always assume we are talking about S2. If you are
using S1, pick an ajax framework, most of them have a Div tag like the one
on S2. See Frank's email for details on one of them.

musachy

On 2/28/07, Maya menon [EMAIL PROTECTED] wrote:

Thanks Musachy for your response.
We use Struts 1.x right now.. Guess we have to update..
Please send me if yu have any examples/links..

Musachy Barroso [EMAIL PROTECTED] wrote:
You can refresh the page, but that would probably be annoying to the
user,
not to mention that data entered on fields will most likely be lost. Using
a
div you can update just the part of the page that is important. Using the
div tag in struts:

theme=ajax
href=%{ajaxTest}
updateFreq=3000/

musachy

On 2/28/07, Maya menon wrote:

Thank you both for your responses.

So AJAX is the technique I should refer. Anyone know of any examples /
somethings.

Maya

http://struts.apache.org/2.x/docs/ajax-tags.html

musachy

On 2/28/07, Frank W. Zammetti wrote:

Have a peak at the AjaxParts Taglib (APT) in Java Web Parts (JWP):

http://javawebparts.sourceforge.net

http://javawebparts.sourceforge.net/javadocs/javawebparts/ajaxparts/taglib/package-summary.html

The benefit is that it will allow you to do this, since it has a timed
AJAX event function, and will save you from having to write any
Javascript
yourself (most likely).

Whether you go with APT or not, AJAX is probably the first thing you
want
to look at.

Frank

On Wed, February 28, 2007 3:54 pm, Maya menon wrote:
All,

What technologies can be used here ? Can anyone provide me some
suggestions ?

The users login to the application using a web page, this is a web
based
J2ee application using struts, Oracle database.

Thanks,
Maya

-
Any questions? Get answers on any topic at Yahoo! Answers. Try it
now.

-
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]

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-
Never Miss an Email
Stay connected with Yahoo! Mail on your mobile. Get started!

--
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Re: Real time data display in a struts based application.

2007-02-28 Thread Adam Ruggles

The difference between using AJAX and just refreshing a page is a well
designed AJAX application sends over just the information that is
needed. For a JSP/HTML page refresh you're sending more data over the
line. The key here is a well designed AJAX application.

Maya menon wrote:

Thank you both for your responses.

So AJAX is the technique I should refer. Anyone know of any examples / somethings.

Also, my colleague asked me this question when I talked to him about a timed AJAX event. Why cant we simply refresh the jsp page ? Why should we use AJAX ? so, whats the real advantage of using an AJAX timed event to a normal JSP/HTML refresh ?

Maya

http://struts.apache.org/2.x/docs/ajax-tags.html

musachy

On 2/28/07, Frank W. Zammetti wrote:

Well, if you can live with not literally pushing to the client, this is
the sort of application AJAX was made for. Have a timed event, every few
seconds maybe, whatever your tolerable definition of real time is, that
makes and AJAX request to check for new data and display it when found.
Pretty easy.

Have a peak at the AjaxParts Taglib (APT) in Java Web Parts (JWP):

http://javawebparts.sourceforge.net

http://javawebparts.sourceforge.net/javadocs/javawebparts/ajaxparts/taglib/package-summary.html

The benefit is that it will allow you to do this, since it has a timed
AJAX event function, and will save you from having to write any Javascript
yourself (most likely).

Whether you go with APT or not, AJAX is probably the first thing you want
to look at.

Frank

On Wed, February 28, 2007 3:54 pm, Maya menon wrote:

All,

Have a design issue here. We have a web based application and have

2000

What technologies can be used here ? Can anyone provide me some
suggestions ?

The users login to the application using a web page, this is a web

based

J2ee application using struts, Oracle database.

Thanks,
Maya

-
Any questions? Get answers on any topic at Yahoo! Answers. Try it now.

-
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