rubycocoa-talk — talking about RubyCocoa

Re: [Rubycocoa-talk] Where does stdout go?

[Pierce T. W. I. <pi...@tw...>]

On May 23, 2008, at 12:50 AM, Eloy Duran wrote:

> Hi Pierce,
>
> You might want to take a look at SACrashReporter, which I wrote for
> this situation.
> It catches uncatched ruby exceptions logs them and reraises them.
> The next time the app launches any new crash logs will be requested to
> be emailed to the developer via a webservice.
> http://rucola.rubyforge.org/svn/extras/plugins/SACrashReporter/
>
> There's some docs in: http://rucola.rubyforge.org/svn/extras/plugins/SACrashReporter/lib/SACrashReporter.rb
> And you can take a look at the source of LimeChat to see how it should
> be integrated in a standard RC application. Especially look at the
> needed values in Info.plist

  You rock, that's exactly what I needed.

  Pierce

Re: [Rubycocoa-talk] Where does stdout go?

[Eloy D. <elo...@gm...>]

Hi Pierce,

You might want to take a look at SACrashReporter, which I wrote for  
this situation.
It catches uncatched ruby exceptions logs them and reraises them.
The next time the app launches any new crash logs will be requested to  
be emailed to the developer via a webservice.
http://rucola.rubyforge.org/svn/extras/plugins/SACrashReporter/

There's some docs in: http://rucola.rubyforge.org/svn/extras/plugins/SACrashReporter/lib/SACrashReporter.rb
And you can take a look at the source of LimeChat to see how it should
be integrated in a standard RC application. Especially look at the  
needed values in Info.plist

Cheers,
Eloy

On 23 mei 2008, at 02:07, Pierce T. Wetter III wrote:

> Or really, how do I redirect it?
>
>
>  Why:
>
>   So when I'm debugging my rubycocoa app, I always launch it from the
> command line because the ruby backtrace is my most useful debugging
> tool.
>
>   Recently, I intergrated someone elses crash reporting tool, but so
> far, the crash reports aren't useful because they always look like  
> this:
>
> 0   libobjc.A.dylib                	0x90a59380 objc_msgSend + 16
> 1   com.apple.rubycocoa            	0x0004545b rbobj_call_ruby + 1844
> 2   com.apple.rubycocoa            	0x000446b0 install_ovmix_hooks +
> 5630
> 3   com.apple.rubycocoa            	0x00042bc2
> ovmix_register_ruby_method + 2472
> 4   com.apple.Foundation           	0x927f1468 -
> [NSObject(NSForwardInvocation) forward::] + 469
>
> That is, they're objective-C backtraces.
>
> So what I'd like to do is basically startup my app with stdout
> redirected to a file in /tmp, and then if the app crashes, I can have
> the crashreporter email that (currently it sends console.log, which
> isn't very useful).
>
>  How can I do that easily?
>
>  Pierce
>
> -------------------------------------------------------------------------
> This SF.net email is sponsored by: Microsoft
> Defy all challenges. Microsoft(R) Visual Studio 2008.
> http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/
> _______________________________________________
> Rubycocoa-talk mailing list
> Rub...@li...
> https://lists.sourceforge.net/lists/listinfo/rubycocoa-talk

Re: [Rubycocoa-talk] Where does stdout go?

[Allison N. <dem...@ma...>]

If you're running from the commad line, have you tried simply sending stdout to a file by adding '> temp_file.txt' to the end of the command line?
 
On Friday, May 23, 2008, at 02:07AM, "Pierce T. Wetter III" <pi...@tw...> wrote:
>Or really, how do I redirect it?
>
>
>  Why:
>
>   So when I'm debugging my rubycocoa app, I always launch it from the  
>command line because the ruby backtrace is my most useful debugging  
>tool.
>
>   Recently, I intergrated someone elses crash reporting tool, but so  
>far, the crash reports aren't useful because they always look like this:
>
>0   libobjc.A.dylib                	0x90a59380 objc_msgSend + 16
>1   com.apple.rubycocoa            	0x0004545b rbobj_call_ruby + 1844
>2   com.apple.rubycocoa            	0x000446b0 install_ovmix_hooks +  
>5630
>3   com.apple.rubycocoa            	0x00042bc2  
>ovmix_register_ruby_method + 2472
>4   com.apple.Foundation           	0x927f1468 - 
>[NSObject(NSForwardInvocation) forward::] + 469
>
>That is, they're objective-C backtraces.
>
>So what I'd like to do is basically startup my app with stdout  
>redirected to a file in /tmp, and then if the app crashes, I can have  
>the crashreporter email that (currently it sends console.log, which  
>isn't very useful).
>
>  How can I do that easily?
>
>  Pierce
>
>-------------------------------------------------------------------------
>This SF.net email is sponsored by: Microsoft
>Defy all challenges. Microsoft(R) Visual Studio 2008.
>http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/
>_______________________________________________
>Rubycocoa-talk mailing list
>Rub...@li...
>https://lists.sourceforge.net/lists/listinfo/rubycocoa-talk
>
>

[Rubycocoa-talk] Where does stdout go?

[Pierce T. W. I. <pi...@tw...>]

Or really, how do I redirect it?


  Why:

   So when I'm debugging my rubycocoa app, I always launch it from the  
command line because the ruby backtrace is my most useful debugging  
tool.

   Recently, I intergrated someone elses crash reporting tool, but so  
far, the crash reports aren't useful because they always look like this:

0   libobjc.A.dylib                	0x90a59380 objc_msgSend + 16
1   com.apple.rubycocoa            	0x0004545b rbobj_call_ruby + 1844
2   com.apple.rubycocoa            	0x000446b0 install_ovmix_hooks +  
5630
3   com.apple.rubycocoa            	0x00042bc2  
ovmix_register_ruby_method + 2472
4   com.apple.Foundation           	0x927f1468 - 
[NSObject(NSForwardInvocation) forward::] + 469

That is, they're objective-C backtraces.

So what I'd like to do is basically startup my app with stdout  
redirected to a file in /tmp, and then if the app crashes, I can have  
the crashreporter email that (currently it sends console.log, which  
isn't very useful).

  How can I do that easily?

  Pierce

Re: [Rubycocoa-talk] Another New RubyCocoa App

[Pim S. <pi...@li...>]

> Check it out here : http://inexdo.com/CocoaNav
> The source is on google code : here http://code.google.com/p/cocoanav/

Wow Patrick,  very slick interface. Good app for learning cocoa.

Re: [Rubycocoa-talk] Another New RubyCocoa App

[Patrick G. <pge...@wa...>]

Thank you !

I've had a crash report on 10.4.11 — forgot to mention this needs  
Leopard, and will crash on 10.5.0 - make sure you're running the  
latest OSX before trying CocoaNav.


> Hi Patrick,
>
> And what a night it was indeed!
> Thanks for the awesome framework browser! I'm a sucker for moving
> things :)
>
> Oh and both your sites for the apps also look great,
> which is always a good appetizer.
>
> Eloy
>
> On May 20, 2008, at 11:15 PM, Patrick Geiller wrote:
>
>> (Looks like it's release night !)
>>
>> Hello,
>>
>> Today I released CocoaNav, a Cocoa class browser. It loads all
>> frameworks in /System and allows you to search and browse them. The
>> code it not as clean as Pim's, though :)
>>
>> Check it out here : http://inexdo.com/CocoaNav
>> The source is on google code : here http://code.google.com/p/ 
>> cocoanav/
>>
>> -Patrick
>>
>>
>>
>> -------------------------------------------------------------------------
>> This SF.net email is sponsored by: Microsoft
>> Defy all challenges. Microsoft(R) Visual Studio 2008.
>> http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/
>> _______________________________________________
>> Rubycocoa-talk mailing list
>> Rub...@li...
>> https://lists.sourceforge.net/lists/listinfo/rubycocoa-talk
>
>
> -------------------------------------------------------------------------
> This SF.net email is sponsored by: Microsoft
> Defy all challenges. Microsoft(R) Visual Studio 2008.
> http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/
> _______________________________________________
> Rubycocoa-talk mailing list
> Rub...@li...
> https://lists.sourceforge.net/lists/listinfo/rubycocoa-talk
>

Re: [Rubycocoa-talk] Another New RubyCocoa App

[Eloy D. <elo...@gm...>]

Hi Patrick,

And what a night it was indeed!
Thanks for the awesome framework browser! I'm a sucker for moving  
things :)

Oh and both your sites for the apps also look great,
which is always a good appetizer.

Eloy

On May 20, 2008, at 11:15 PM, Patrick Geiller wrote:

> (Looks like it's release night !)
>
> Hello,
>
> Today I released CocoaNav, a Cocoa class browser. It loads all
> frameworks in /System and allows you to search and browse them. The
> code it not as clean as Pim's, though :)
>
> Check it out here : http://inexdo.com/CocoaNav
> The source is on google code : here http://code.google.com/p/cocoanav/
>
> -Patrick
>
>
>
> -------------------------------------------------------------------------
> This SF.net email is sponsored by: Microsoft
> Defy all challenges. Microsoft(R) Visual Studio 2008.
> http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/
> _______________________________________________
> Rubycocoa-talk mailing list
> Rub...@li...
> https://lists.sourceforge.net/lists/listinfo/rubycocoa-talk

[Rubycocoa-talk] header functions?

[Steve C. <sco...@gm...>]

I'm pretty new to all this, and have done a lot of googling and not
found a good answer.

I'd like to try to use some of the quicktime video conversion
functions (from QTkit, I presume).  I see that I'm supposed to import
the framework like this:


OSX.require_framework "QTKit"

...and I'd really like to call MovieExportToFile, defined in
QuickTimeComponents.h (I gather this from
http://developer.apple.com/documentation/QuickTime/Reference/QTRef_MovieComponents/Reference/reference.html)

The obj-c examples I've seen show that this function is supposed to be
called directly.

- how should I go about "importing" this header file?
- once imported, how would I go about calling to one of the functions?

-Steve

Re: [Rubycocoa-talk] validateValue:forKey:error: problem

[Aron N. <aro...@gm...>]

Whoops, I'll try that again.  Previous attempt inadvertently in HTML;  
sorry for the spam.

A week or so ago I said:
> I'm trying to implement property validation methods
> (validate<Name>:error:, or, rather, validate<Name>_error in Ruby) in a
> Ruby class. I am able to call the validation methods directly from
> objc, but they are not called when running
> "validateValue:forKey:error:". Turning on RubyCocoa logging shows no
> activity on the bridge when validateValue:forKey:error: is called.

The list responded:
> ...


On the off chance that this means nobody happens to know and this is a  
real problem, here's my workaround:

I overloaded validateValue:forKey:error:, for now in the Ruby class  
with the properties I'm validating:

	def validateValue_forKey_error(value, key, error)
		selector = "validate" + key.capitalize + "_error"
		if (self.respond_to? selector)
			return self.send(selector, value, error)
		else
			return true
		end
	end

If this is, indeed, a real problem, something like this could go into  
the Ruby NSObject code.  Better would be to fix it in the objc  
NSObject code, but there's that pesky lack of source code...

Again, I'm using the Ruby/RubyCocoa that came with Leopard.

-Aron

[Rubycocoa-talk] Another New RubyCocoa App

[Patrick G. <pge...@wa...>]

(Looks like it's release night !)

Hello,

Today I released CocoaNav, a Cocoa class browser. It loads all  
frameworks in /System and allows you to search and browse them. The  
code it not as clean as Pim's, though :)

Check it out here : http://inexdo.com/CocoaNav
The source is on google code : here http://code.google.com/p/cocoanav/

-Patrick

Re: [Rubycocoa-talk] New RubyCocoa app

[Patrick G. <pge...@wa...>]

Hi Pim,

Thanks for posting the source code ! I've never done any Rails, it  
looks very nice.


> Hi,
>
> I'd like to share my first RubyCocoa app. Maybe it can be posted on
> the RubyCocoa project page. I will soon publish it officially though
> it's still very beta. Comments are welcome.
>
> The outline view is of interest because I use activerecord-bindings to
> populate it. Did not found a tutorial about this.
>
> Visit http://www.pimsnel.com/timetoticket/Home.html to check out.
>
> Regards,
> Pim Snel
>
> -------------------------------------------------------------------------
> This SF.net email is sponsored by: Microsoft
> Defy all challenges. Microsoft(R) Visual Studio 2008.
> http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/
> _______________________________________________
> Rubycocoa-talk mailing list
> Rub...@li...
> https://lists.sourceforge.net/lists/listinfo/rubycocoa-talk
>

Re: [Rubycocoa-talk] validateValue:forKey:error: problem

[Aron N. <aro...@gm...>]

A week or so ago I said:
> I'm trying to implement property validation methods
> (validate<Name>:error:, or, rather, validate<Name>_error in Ruby) in a
> Ruby class. I am able to call the validation methods directly from
> objc, but they are not called when running
> "validateValue:forKey:error:". Turning on RubyCocoa logging shows no
> activity on the bridge when validateValue:forKey:error: is called.

The list responded:
> ...


On the off chance that this means nobody happens to know and this is a  
real problem, here's my workaround:

I overloaded validateValue:forKey:error:, for now in the Ruby class  
with the properties I'm validating:

	def validateValue_forKey_error(value, key, error)
		selector = "validate" + key.capitalize + "_error"
		if (self.respond_to? selector)
			return self.send(selector, value, error)
		else
			return true
		end
	end

If this is, indeed, a real problem, something like this could go into  
the Ruby NSObject code.  Better would be to fix it in the objc  
NSObject code, but there's that pesky lack of source code...

Again, I'm using the Ruby/RubyCocoa that came with Leopard.

-Aron

Re: [Rubycocoa-talk] New RubyCocoa app

[Eloy D. <elo...@gm...>]

Very nice Pim!
You wrote something I envisioned when I originally worked in the  
bindings stuff :) So thanks a lot, I will definitely check it out.

About including it as a sample, this is of course very possible and  
appreciated.
I'll contact you off-list about it.

Eloy

On 20 mei 2008, at 16:29, Pim Snel wrote:

> Hi,
>
> I'd like to share my first RubyCocoa app. Maybe it can be posted on
> the RubyCocoa project page. I will soon publish it officially though
> it's still very beta. Comments are welcome.
>
> The outline view is of interest because I use activerecord-bindings to
> populate it. Did not found a tutorial about this.
>
> Visit http://www.pimsnel.com/timetoticket/Home.html to check out.
>
> Regards,
> Pim Snel
>
> -------------------------------------------------------------------------
> This SF.net email is sponsored by: Microsoft
> Defy all challenges. Microsoft(R) Visual Studio 2008.
> http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/
> _______________________________________________
> Rubycocoa-talk mailing list
> Rub...@li...
> https://lists.sourceforge.net/lists/listinfo/rubycocoa-talk

Re: [Rubycocoa-talk] New RubyCocoa app

[Allison N. <dem...@ma...>]

Very clean code :-)

I still can't believe how short RubyCocoa apps are.  But your's is a particularly fine example Pim :-)

 
On Tuesday, May 20, 2008, at 04:29PM, "Pim Snel" <pi...@li...> wrote:
>Hi,
>
>I'd like to share my first RubyCocoa app. Maybe it can be posted on  
>the RubyCocoa project page. I will soon publish it officially though  
>it's still very beta. Comments are welcome.
>
>The outline view is of interest because I use activerecord-bindings to  
>populate it. Did not found a tutorial about this.
>
>Visit http://www.pimsnel.com/timetoticket/Home.html to check out.
>
>Regards,
>Pim Snel
>
>-------------------------------------------------------------------------
>This SF.net email is sponsored by: Microsoft 
>Defy all challenges. Microsoft(R) Visual Studio 2008. 
>http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/
>_______________________________________________
>Rubycocoa-talk mailing list
>Rub...@li...
>https://lists.sourceforge.net/lists/listinfo/rubycocoa-talk
>
>

[Rubycocoa-talk] New RubyCocoa app

[Pim S. <pi...@li...>]

Hi,

I'd like to share my first RubyCocoa app. Maybe it can be posted on  
the RubyCocoa project page. I will soon publish it officially though  
it's still very beta. Comments are welcome.

The outline view is of interest because I use activerecord-bindings to  
populate it. Did not found a tutorial about this.

Visit http://www.pimsnel.com/timetoticket/Home.html to check out.

Regards,
Pim Snel

[Rubycocoa-talk] Custom ActiveRecord::Base-methods and Bindings

[Pim S. <pi...@li...>]

Hello,

Again a bindings question, sorry for asking so many questions. I hope  
I can answer some when I get more experienced.

I have the following ActiveRecord class:

class Issue < ActiveRecord::Base

	belongs_to :project
	has_many :time_entries, :dependent => :delete_all

	def spent_hours
		@spent_hours ||= time_entries.sum(:hours) || 0 #its a float
	end
end

If I retrieve spent_hours manually in de code like below it works as  
it should;

@issues = Issue.find(:all)
@issues.each do |issue|
	if issue.spent_hours >0
	puts issue.spent_hours.to_s
	end
end

but in the NIB where I have set the Model Key Path of a table column  
to "spent_hours" it stays empty. Must I add some magick to the  
IssueProxy e.g. with on_get?

Regards,
Pim Snel

Re: [Rubycocoa-talk] exceptions in activerecord-bindings

[Eloy D. <elo...@gm...>]

Sure, glad it helped :)

Eloy

On 19 mei 2008, at 22:26, Pim Snel wrote:

>
> Op 19 mei 2008, om 19:34 heeft Eloy Duran het volgende geschreven
>> Hi Pim,
>>
>> Ideally you'd want to rescue it in #rbValueForKey, something like:
>>
>> class ProjectProxy
>>   def rbValueForKey(key)
>>     super
>>   rescue ActiveRecord::StatementInvalid => e # that's apparently  
>> what it raises for a lost connection
>>     # do some reporting and reconnect or what have you not...
>>     puts e.message
>>     puts e.backtrace
>>   end
>> end
>
> Thanks Eloy! This is exactly what I was looking for, and it is  
> working. This will stop a lot of crashes ;)
>
>> If this gives the desired result and you come up with a good  
>> universal solution don't mind to send a patch ;)
>
> I think I'm not ready for sending patches as I'm still learning Ruby  
> and Cocoa and I'm a real novice. I do know I'll stick to RubyCocoa  
> and ActiveRecord so perhaps later on.
>
>
>> On 19 mei 2008, at 19:11, Pim Snel wrote:
>>
>>> To be more complete:
>>>
>>> Issue Load (0.000000)  Mysql::Error: Lost connection to MySQL  
>>> server during query: SELECT id, subject, project_id FROM `issues`  
>>> WHERE (issues.project_id = 55 AND status_id < 5)
>>> 2008-05-19 15:43:29.340 TimeToTicket[13026:10b]  
>>> ProjectProxy#rbValueForKey: ActiveRecord::StatementInvalid:  
>>> Mysql::Error: Lost connection to MySQL server during query: SELECT  
>>> id, subject, project_id FROM `issues`   WHERE (issues.project_id =  
>>> 55 AND status_id < 5)
>>>
>>> But where should I add this begin/rescue/end block? In an  
>>> overruling function in ProjectProxy in this case?
>>>
>>>
>>> Op 19 mei 2008, om 17:11 heeft Patrick Geiller het volgende  
>>> geschreven:
>>>
>>>>
>>>>
>>>>> Mysql::Error: Lost connection to MySQL server during query.
>>>>
>>>> Is this error thrown by Ruby ? In that case you should be able to  
>>>> wrap the offending code with begin / rescue / end.
>
> -------------------------------------------------------------------------
> This SF.net email is sponsored by: Microsoft
> Defy all challenges. Microsoft(R) Visual Studio 2008.
> http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/_______________________________________________
> Rubycocoa-talk mailing list
> Rub...@li...
> https://lists.sourceforge.net/lists/listinfo/rubycocoa-talk

Re: [Rubycocoa-talk] exceptions in activerecord-bindings

[Pim S. <pi...@li...>]

Op 19 mei 2008, om 19:34 heeft Eloy Duran het volgende geschreven
> Hi Pim,
>
> Ideally you'd want to rescue it in #rbValueForKey, something like:
>
> class ProjectProxy
>   def rbValueForKey(key)
>     super
>   rescue ActiveRecord::StatementInvalid => e # that's apparently  
> what it raises for a lost connection
>     # do some reporting and reconnect or what have you not...
>     puts e.message
>     puts e.backtrace
>   end
> end

Thanks Eloy! This is exactly what I was looking for, and it is  
working. This will stop a lot of crashes ;)

> If this gives the desired result and you come up with a good  
> universal solution don't mind to send a patch ;)

I think I'm not ready for sending patches as I'm still learning Ruby  
and Cocoa and I'm a real novice. I do know I'll stick to RubyCocoa and  
ActiveRecord so perhaps later on.


> On 19 mei 2008, at 19:11, Pim Snel wrote:
>
>> To be more complete:
>>
>> Issue Load (0.000000)  Mysql::Error: Lost connection to MySQL  
>> server during query: SELECT id, subject, project_id FROM `issues`  
>> WHERE (issues.project_id = 55 AND status_id < 5)
>> 2008-05-19 15:43:29.340 TimeToTicket[13026:10b]  
>> ProjectProxy#rbValueForKey: ActiveRecord::StatementInvalid:  
>> Mysql::Error: Lost connection to MySQL server during query: SELECT  
>> id, subject, project_id FROM `issues`   WHERE (issues.project_id =  
>> 55 AND status_id < 5)
>>
>> But where should I add this begin/rescue/end block? In an  
>> overruling function in ProjectProxy in this case?
>>
>>
>> Op 19 mei 2008, om 17:11 heeft Patrick Geiller het volgende  
>> geschreven:
>>
>>>
>>>
>>>> Mysql::Error: Lost connection to MySQL server during query.
>>>
>>> Is this error thrown by Ruby ? In that case you should be able to  
>>> wrap the offending code with begin / rescue / end.

Re: [Rubycocoa-talk] exceptions in activerecord-bindings

[Eloy D. <elo...@gm...>]

Hi Pim,

Ideally you'd want to rescue it in #rbValueForKey, something like:

class ProjectProxy
   def rbValueForKey(key)
     super
   rescue ActiveRecord::StatementInvalid => e # that's apparently what  
it raises for a lost connection
     # do some reporting and reconnect or what have you not...
     puts e.message
     puts e.backtrace
   end
end

If this gives the desired result and you come up with a good universal  
solution don't mind to send a patch ;)

Cheers,
Eloy

On 19 mei 2008, at 19:11, Pim Snel wrote:

> To be more complete:
>
> Issue Load (0.000000)  Mysql::Error: Lost connection to MySQL server  
> during query: SELECT id, subject, project_id FROM `issues` WHERE  
> (issues.project_id = 55 AND status_id < 5)
> 2008-05-19 15:43:29.340 TimeToTicket[13026:10b]  
> ProjectProxy#rbValueForKey: ActiveRecord::StatementInvalid:  
> Mysql::Error: Lost connection to MySQL server during query: SELECT  
> id, subject, project_id FROM `issues`   WHERE (issues.project_id =  
> 55 AND status_id < 5)
>
> But where should I add this begin/rescue/end block? In an overruling  
> function in ProjectProxy in this case?
>
>
> Op 19 mei 2008, om 17:11 heeft Patrick Geiller het volgende  
> geschreven:
>
>>
>>
>>> Mysql::Error: Lost connection to MySQL server during query.
>>
>> Is this error thrown by Ruby ? In that case you should be able to  
>> wrap the offending code with begin / rescue / end.
>>
>> -------------------------------------------------------------------------
>> This SF.net email is sponsored by: Microsoft
>> Defy all challenges. Microsoft(R) Visual Studio 2008.
>> http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/_______________________________________________
>> Rubycocoa-talk mailing list
>> Rub...@li...
>> https://lists.sourceforge.net/lists/listinfo/rubycocoa-talk
>
> -------------------------------------------------------------------------
> This SF.net email is sponsored by: Microsoft
> Defy all challenges. Microsoft(R) Visual Studio 2008.
> http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/_______________________________________________
> Rubycocoa-talk mailing list
> Rub...@li...
> https://lists.sourceforge.net/lists/listinfo/rubycocoa-talk

Re: [Rubycocoa-talk] exceptions in activerecord-bindings

[Pim S. <pi...@li...>]

Op 19 mei 2008, om 17:30 heeft Allison Newman het volgende geschreven:

> I have seen the same error running Rails apps on my Mac.  I think  
> this is an ActiveRecord issue, not a RubyCocoa issue...
>

I understand the issue and this is not an bug of ActiveRecord. The SSH  
tunnel crashes and thus the AR-connection is lost. But how can I  
rescue my ActiveRecord Session?

> On Monday, May 19, 2008, at 03:49PM, "Pim Snel" <pi...@li...>  
> wrote:
>> Hello,
>>
>> I've created an RubyCocoa app which uses activerecord and cocoa-
>> bindings to connect to a mysql database. This works perfect but now
>> I've added a SSH tunnel so that a remote database can be used. The
>> application creates the tunnel before creating the db-connection and
>> because this ssh tunnel often gets reset by peer, the app, ofter
>> creates a new database connection.
>>
>> The problem is: when the window which contains the bindings and is
>> populated wth query data is open but  the ssh tunnel is broken the
>> complete application crashes with the error:  Mysql::Error: Lost
>> connection to MySQL server during query.
>>
>> The reason of the crash is understandable but how can I create an
>> exception for it. Can exceptions be added in Interface Builder?
>>
>> Regards,
>> Pim Snel
>
> -------------------------------------------------------------------------
> This SF.net email is sponsored by: Microsoft
> Defy all challenges. Microsoft(R) Visual Studio 2008.
> http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/
> _______________________________________________
> Rubycocoa-talk mailing list
> Rub...@li...
> https://lists.sourceforge.net/lists/listinfo/rubycocoa-talk

Re: [Rubycocoa-talk] exceptions in activerecord-bindings

[Pim S. <pi...@li...>]

To be more complete:

Issue Load (0.000000)  Mysql::Error: Lost connection to MySQL server  
during query: SELECT id, subject, project_id FROM `issues` WHERE  
(issues.project_id = 55 AND status_id < 5)
2008-05-19 15:43:29.340 TimeToTicket[13026:10b]  
ProjectProxy#rbValueForKey: ActiveRecord::StatementInvalid:  
Mysql::Error: Lost connection to MySQL server during query: SELECT id,  
subject, project_id FROM `issues`   WHERE (issues.project_id = 55 AND  
status_id < 5)

But where should I add this begin/rescue/end block? In an overruling  
function in ProjectProxy in this case?


Op 19 mei 2008, om 17:11 heeft Patrick Geiller het volgende geschreven:

>
>
>> Mysql::Error: Lost connection to MySQL server during query.
>
> Is this error thrown by Ruby ? In that case you should be able to  
> wrap the offending code with begin / rescue / end.
>
> -------------------------------------------------------------------------
> This SF.net email is sponsored by: Microsoft
> Defy all challenges. Microsoft(R) Visual Studio 2008.
> http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/_______________________________________________
> Rubycocoa-talk mailing list
> Rub...@li...
> https://lists.sourceforge.net/lists/listinfo/rubycocoa-talk

Re: [Rubycocoa-talk] exceptions in activerecord-bindings

[Allison N. <dem...@ma...>]

I have seen the same error running Rails apps on my Mac.  I think this is an ActiveRecord issue, not a RubyCocoa issue...
 
On Monday, May 19, 2008, at 03:49PM, "Pim Snel" <pi...@li...> wrote:
>Hello,
>
>I've created an RubyCocoa app which uses activerecord and cocoa- 
>bindings to connect to a mysql database. This works perfect but now  
>I've added a SSH tunnel so that a remote database can be used. The  
>application creates the tunnel before creating the db-connection and  
>because this ssh tunnel often gets reset by peer, the app, ofter  
>creates a new database connection.
>
>The problem is: when the window which contains the bindings and is  
>populated wth query data is open but  the ssh tunnel is broken the  
>complete application crashes with the error:  Mysql::Error: Lost  
>connection to MySQL server during query.
>
>The reason of the crash is understandable but how can I create an  
>exception for it. Can exceptions be added in Interface Builder?
>
>Regards,
>Pim Snel

Re: [Rubycocoa-talk] exceptions in activerecord-bindings

[Patrick G. <pge...@wa...>]

> Mysql::Error: Lost connection to MySQL server during query.

Is this error thrown by Ruby ? In that case you should be able to wrap  
the offending code with begin / rescue / end.

Re: [Rubycocoa-talk] key-value observing

[Patrick G. <pge...@wa...>]

> It seems as if RubyCocoa's key-value observing works differently in
> some ways than Objective-C's would. Is this intentional? An incomplete
> implementation? The real question: is it stable behavior an app can
> depend upon?


Checking the source of kvc_accessor from oc_import.rb : declaring an  
accessor with kvc_accessor will call KVO methods in the setter.

setValue_forKey calls KVO methods + accessor, which again calls KVO  
methods, thus the 2 notifications. I don't know if that's correct.


     def kvc_accessor(*args)
       kvc_reader(*args)
       kvc_writer(*args)
     end

     def kvc_writer(*args)
       args.flatten.each do |key|
         setter = key.to_s + '='
         attr_writer(key) unless method_defined?(setter)
         alias_method kvc_internal_setter(key), setter
         self.class_eval <<-EOE_KVC_WRITER,__FILE__,__LINE__+1
           def #{kvc_setter_wrapper(key)}(value)
             willChangeValueForKey('#{key.to_s}')
             send('#{kvc_internal_setter(key)}', value)
             didChangeValueForKey('#{key.to_s}')
           end
         EOE_KVC_WRITER
         alias_method setter, kvc_setter_wrapper(key)
       end
     end

[Rubycocoa-talk] exceptions in activerecord-bindings

[Pim S. <pi...@li...>]

Hello,

I've created an RubyCocoa app which uses activerecord and cocoa- 
bindings to connect to a mysql database. This works perfect but now  
I've added a SSH tunnel so that a remote database can be used. The  
application creates the tunnel before creating the db-connection and  
because this ssh tunnel often gets reset by peer, the app, ofter  
creates a new database connection.

The problem is: when the window which contains the bindings and is  
populated wth query data is open but  the ssh tunnel is broken the  
complete application crashes with the error:  Mysql::Error: Lost  
connection to MySQL server during query.

The reason of the crash is understandable but how can I create an  
exception for it. Can exceptions be added in Interface Builder?

Regards,
Pim Snel