date:20090708

Re: Maintain server state of a page + Javascript page navigation

2009-07-08 Thread shravan kumar

 Thanks for your response Mike. 

What is Giandiua btw? Google says it is a Chocolate from Italy!!!

The page am referring is just one of the pages of a wizard, which has 
sub-pages. The whole wizard runs through component actions.

I was actually about following situation:

When we have long response component displayed upon initiating a request, and 
we see long response until we have a response. Once after the response let's 
say I just hide long response component and show the main component, now user 
cannot perform any actions in this main component and we might receive errors 
like: You have exceeded 30 pages limit/ page out of cache... this is because 
the context bound to the action element is older. Am I correct (Mike) ?

I understand by your saying switching to direct actions, we can get away from 
this issue if we use direct actions. But am wondering if I can use component 
actions and direct actions freely. I hope I can validate whether the direct 
action request is initiated by a logged-in valid user, so my direct actions are 
not floating freely.

---

If I use component actions, can you advise me how can I have all the elements, 
app in the latest context?

Thank You,
Shravan Kumar. M
--



Monday, July 6, 2009 7:14 PM



From: 
Mike Schrag msch...@mdimension.com



To: 
WO Dev Group webobjects-dev@lists.apple.com
seems
to me like you're swimming against the tide here ... i think you need
to rethink this architecture.  you're basically sending the users the
entire site, which makes this more of a Sproutcore/Giandiua/etc
workflow, and mixing component actions into this style of app is going
to be very tricky. I would recommend switching to directactions. you
could keep a session alive with a ping if you really need it to be
sessionful, but trying to actually use WOForms in this thing is going
to be an endless headache imo.
On Jul 6, 2009, at 7:54 AM, shravan kumar wrote:
Hi Group,

Could you please advise me a solution to achieve below functionality:

Scenario:
-

I
have a page which gets all the data like text content [3000 lines or
more], images info [about 500 or more] once when the user requests for
this page.

Once this data from the server has arrived, we will
be displaying this whole data part by part by splitting this data into
sub-pages through javascript. So, user actually sees the sub-page
rather the whole page received from the server.

There can be around 40 sub-pages or more.

While
navigating through each of these sub-pages user may perform a server
action like edit some text and save, rotate an image and save, ... and
all these actions do not refresh the whole page/ sub-page (like we see
in ajax implementations) and just update a particular field.

I assume that there might be some time-gap say 10 minutes or more between each 
of the server actions performed by the user.


During these times as you know, we have to maintain the session of this
user in the server (this can be achieved through lets say session
timeout value), state of this page in the server, ... 

Problem:
-
How
can I maintain the state of this page (generally whenever we do a
submit WO app returns with a new context info, correct?), so all my
actions are valid and there are issues of Broken pipe/ page not in the
cache/ ...

I thought of just pinging the server every few
seconds for some dummy data like: how are you doing? or something like
gmail does? However, I do not know how to exactly implement this
behavior.

Please advise.

Thanks in advance,
Shravan Kumar. M

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Re: And the beat goes on...

2009-07-08 Thread Chuck Hill

On Jul 7, 2009, at 10:14 PM, Anjo Krank wrote:

Am 08.07.2009 um 03:55 schrieb Chuck Hill:

On Jul 7, 2009, at 4:48 PM, Ken Anderson wrote:

http://www.appleinsider.com/articles/09/07/07/apple_to_drop_webobjects_in_snow_leopard_server.html

Nothing new there. They even got most of the facts correct! ;-)

WTF is that jlm808 id^H^H guy in the forums? Exactly this kind of
language makes all of us look like a bunch of raving maniacs. Hey
look! See that guy with the hunchback? That's one of the two WO devs
left in the world.. Ohh, the poor unfortunate creature...

The intelligence of the comments are about what you usually get on a
public forum. It has once again restored my lack of faith in humanity.

The article was totally ok, one might have mentioned that it is
actually a good thing the standard install is gone (because update
will fuck it up every so often, if I did ruby, I'd be horrified that
Apple includes ROR), and it's only a deployment issue, not dev.

Yes, much gnashing of teeth about a small and good change.

Chuck

--
Chuck Hill Senior Consultant / VP Development

Practical WebObjects - for developers who want to increase their
overall knowledge of WebObjects or who are trying to solve specific
problems.

http://www.global-village.net/products/practical_webobjects

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WOCheckBoxList is not working in WO-5.4

2009-07-08 Thread Kalpana Vaka

Hi,

 

We are trying to migrate our application deployment environment from
WebObjects 5.2 to WebObjects 5.4.

 

In some of the WOComponents, we are making use of WOCheckBoxList and
WOCheckboxMatrix elements. In WO5.2, WOCheckBoxList is working fine and we
are able to view the check boxes. But in WO5.4, WOCheckBoxList is displaying
as a text box with values 0,1,2 etc.,  I came to know that some of these
dynamic elements are deprecated in WebObjects 5.

 

Is there any way to make WOCheckBoxList work in WebObjects 5.4 version? 

 

Thanks  Regards,

Kalpana.

 

 

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Re: WOLips Entity Modeler SQL Generation and WO 5.4

2009-07-08 Thread Johann Werner


Hi Dave,

this addition to _Entity.java seems very useful. Perhaps it should be  
added to the standard templates? They would become more sort of use  
them and don't care so perhaps file a jira.


jw


Am 08.07.2009 um 01:00 schrieb David Avendasora:



On Jul 7, 2009, at 6:17 PM, Miguel Angel Torres Avila wrote:


Hi, Thanks for the hint about using Prototypes, it is really useful.


That brought to my mine a questing that is a little out of the topic.

If you have an attribute prototyped as currencyAmount the precision  
is set to 38 and the scale to 4. The Data Type suggested is  
java.math.BigDecimal.
How are you guys controlling that the BigDecimal in your java class  
does not have a value whit a scale superior of 4 before saving the  
editing context to avoid an exception?


We are currently solving this just rounding the value before  
saving, or in the validation method  to ensure the scale is not  
superior that the value defined in modeler. But one of the great  
things of prototyping is that if for some reason I want to change  
the scale to 5 instead 4, all the attribute definition's that are  
using that prototype will be updated, what about the BigDecimal?


Maybe I am wrong on thinking that I should be sure that the scale  
of my BigDecimal  must be less than or equals to the scale defined  
in the modeler to avoid exception on saving.


How do you guys handle this?


I have modified my EOGenerator _Entity.java template to watch for  
BigDecimal data types and to automatically set the scale to what the  
Model has the scale set to. Here's the snippit of code from the  
attribute setter method:


#if ($attribute.javaClassName == java.math.BigDecimal)
if (${attribute.name} != null) {
			${attribute.name} = ${attribute.name}.setScale($ 
{attribute.scale}, RoundingMode.HALF_UP);

}
#end

I never had an error since I started using this and if I change the  
settings in the EOModel, my classes are updated when the  
EOGeneration runs.


Dave








On Jul 7, 2009, at 2:42 PM, Johann Werner wrote:



Am 07.07.2009 um 21:09 schrieb Scott M. Neal:



On Jun 30, 2009, at 5:43 PM, David Avendasora wrote:



On Jun 30, 2009, at 8:29 PM, Scott M. Neal wrote:

Well, if you're looking for excuses to upgrade things, maybe  
transition to using Prototypes. I'm sure the Postgress  
Prototypes in Wonder's ERPrototypes will all have the proper  
External Types. :-)


Wow, thank you Dave, that DOES make things substantially easier
(and less prone to error--sure enough, had a missing external  
type in
one of the entities).  All this modern fanciness, still getting  
used

to it...

Now my question is, for the Postgresql prototypes, which one
is recommended to use for primary keys?  Googling reveals some  
people
using long (called longNumber in prototypes), which is what I  
historically
used, while others are using varchar (but not consistent  
regarding size:

10? 100? 10,000,000?  :-))


Why don't you just choose the most obvious prototype: 'id'? Life  
can be so easy ;-)


jw




Thank you,

Scott


Otherwise, you should be able to just select one entity at a  
time and click the SQL button and see which one(s) generate the  
error. I see pretty clear error messages with this, that say  
exactly what external type is not recognized.


Dave


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A WebObjects article on Appleinsider

2009-07-08 Thread Paul Stringer

Wow doesn't happen often but WebObjects getting a mention in the Mac  
press. It's remarking on the dropping of WebObjects deployment from  
Snow Leopard Server (not like it matters WOInstaller does the job  
fine). WOLips gets a mention too nice!. D.E. Dilger really seems to  
like to give a mention to WebObjects whenever he can.


http://www.appleinsider.com/articles/09/07/07/apple_to_drop_webobjects_in_snow_leopard_server.html
http://www.roughlydrafted.com/2009/07/07/apple-to-drop-webobjects-in-snow-leopard-server/

Paul S
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