Re: Very interesting question... my boss complain about one of my implementations...
Hi guys, thank you very much for your comments,
let me explain a little bit deeper my solution, I have a method that create
and execute a thread when I iniciate the aplication, inside if the init
wicket metod, inside of the thread I call another method that updates a
state in the database, I mean if the system time is 48 hours more than the
time saved in that row of the database it updates a field to TRUE, simple
this thread is executed every 30 minutes,
pseudocode:
Thread runing for ever{
-Execute method to update the state
-Sleep thread for 30 minutes
}
Now he told me that I can do something like that with Spring... I´m
absolutly lost, I do not know if he knows what he is saying or just making
me crazy
thanks guyss!!
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Re: Very interesting question... my boss complain about one of my implementations...
Sorry guys I have missed some of your commets I was having a look to Scheduling jobs using Quartz or Timer and it seems to be a good solution and easy to implement/integrate with spring, at lists I will have some arguments to discuss with him on monday!! Cheerss! -- View this message in context: http://apache-wicket.1842946.n4.nabble.com/Very-interesting-question-my-boss-complain-about-one-of-my-implementations-tp2233874p2235766.html Sent from the Wicket - User mailing list archive at Nabble.com. - To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org For additional commands, e-mail: users-h...@wicket.apache.org
Re: Very interesting question... my boss complain about one of my implementations...
read it here http://static.springsource.org/spring/docs/3.0.x/spring-framework-reference/html/scheduling.html (with spring, and you can integrate it with quartz also). On Sat, May 29, 2010 at 12:36 PM, Victor_Trapiello vic...@trapiello.netwrote: Sorry guys I have missed some of your commets I was having a look to Scheduling jobs using Quartz or Timer and it seems to be a good solution and easy to implement/integrate with spring, at lists I will have some arguments to discuss with him on monday!! Cheerss! -- View this message in context: http://apache-wicket.1842946.n4.nabble.com/Very-interesting-question-my-boss-complain-about-one-of-my-implementations-tp2233874p2235766.html Sent from the Wicket - User mailing list archive at Nabble.com. - To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org For additional commands, e-mail: users-h...@wicket.apache.org -- Cristi Manole Nova Creator Software www.novacreator.com
Re: Very interesting question... my boss complain about one of my implementations...
On Sat, May 29, 2010 at 11:27 AM, Victor_Trapiello vic...@trapiello.netwrote:
Hi guys, thank you very much for your comments,
let me explain a little bit deeper my solution, I have a method that create
and execute a thread when I iniciate the aplication, inside if the init
wicket metod, inside of the thread I call another method that updates a
state in the database, I mean if the system time is 48 hours more than the
time saved in that row of the database it updates a field to TRUE, simple
this thread is executed every 30 minutes,
pseudocode:
Thread runing for ever{
-Execute method to update the state
-Sleep thread for 30 minutes
}
Now he told me that I can do something like that with Spring... I´m
absolutly lost, I do not know if he knows what he is saying or just making
me crazy
Your boss is right on this one. You typically shouldn't be doing this kind
of thing on your own. You should use TimerTasks, or Quartz, et cetera, as
several have mentioned.
--
Jeremy Thomerson
http://www.wickettraining.com
RE: Very interesting question... my boss complain about one of my implementations...
And the simplest solution, if it is a simple database action, would be to use a cron job if your database runsund some **ux operating system. Stefan - To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org For additional commands, e-mail: users-h...@wicket.apache.org
SV: Very interesting question... my boss complain about one of my implementations...
My boss said that it is not a good practice and he recomended to use something like in Struts called Timers, do we have something like that in wickets¿? Try looking into Quartz, a library for such things. The lack of a standard scheduling framework outside of JMX is a problem in JEE in general... However, the Struts Timer seems to measure rendering time, so I am not sure why your boss thought that would help. http://struts.apache.org/2.0.11.1/struts2-core/apidocs/org/apache/struts2/util/Timer.html - Tor Iver
Re: SV: Very interesting question... my boss complain about one of my implementations...
I can also recommend Quartz, especially with the Spring integration. (http://static.springsource.org/spring/docs/1.2.9/reference/scheduling.html) Very stable, and quite easy to set up. Try looking into Quartz, a library for such things. The lack of a standard scheduling framework outside of JMX is a problem in JEE in general... - To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org For additional commands, e-mail: users-h...@wicket.apache.org
Re: Very interesting question... my boss complain about one of my implementations...
Hmm Eelco, im puzling with a guice quartz integration as well. it's here and not at all complete (along with an ehcache integration) : http://code.google.com/p/slurry/ 2010/5/28 Eelco Hillenius eelco.hillen...@gmail.com: I had a terrible day because one of my bosses complain about how I have done one task of a project, we had to implement something that updates a field in the database, my brilliant idea was to create a thread inside the wicket init method that makes a query to the database every 3 hours and updates the fields. I don't think it is horrible, though it sounds a bit like a quick fix. It doesn't have to do with your web application of course, though Wicket's application object is a natural place to do bootstrapping. Struts timers (at least the ones I know of) are for timing how long a webpage takes to render. Perhaps he's confused with TimerTasks, which are in Java, not Struts. I think that in general using TimerTask is better than just spawning of a thread. If you are using some logic to update the database every N time, then I suggest using Quartz: https://quartz.dev.java.net/ http://www.quartz-scheduler.org/overview/index.html And using Quartz is even better. The only tricky part of Quartz has been deploying it properly on an application cluster -- to avoid having the same scheduled tasks run simultaneously. If you have a backend app server you can purpose running scheduled tasks on, then it is simple. Quartz does the job, and for my work I created a nice Guice abstraction for it, but I've never been crazy about the API and implementation (though it's stable and reasonably efficient). I wonder if anyone has any real life experience with http://sna-projects.com/azkaban they want to share? Eelco - To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org For additional commands, e-mail: users-h...@wicket.apache.org - To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org For additional commands, e-mail: users-h...@wicket.apache.org
Very interesting question... my boss complain about one of my implementations...
Hello guys! I had a terrible day because one of my bosses complain about how I have done one task of a project, we had to implement something that updates a field in the database, my brilliant idea was to create a thread inside the wicket init method that makes a query to the database every 3 hours and updates the fields. My boss said that it is not a good practice and he recomended to use something like in Struts called Timers, do we have something like that in wickets¿? how can I implement this behaviour without a thread¿? I mean something that is executing since my application is deployed and executing a method every N time!! thank you very much guys, I go to sleep in Spain it is 1.00 AM and tomorrow I have to go to work!! Waiting some feedback Cheers!! -- View this message in context: http://apache-wicket.1842946.n4.nabble.com/Very-interesting-question-my-boss-complain-about-one-of-my-implementations-tp2233874p2233874.html Sent from the Wicket - User mailing list archive at Nabble.com. - To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org For additional commands, e-mail: users-h...@wicket.apache.org
Re: Very interesting question... my boss complain about one of my implementations...
On Thu, May 27, 2010 at 5:46 PM, Victor_Trapiello vic...@trapiello.netwrote: Hello guys! I had a terrible day because one of my bosses complain about how I have done one task of a project, we had to implement something that updates a field in the database, my brilliant idea was to create a thread inside the wicket init method that makes a query to the database every 3 hours and updates the fields. My boss said that it is not a good practice and he recomended to use something like in Struts called Timers, do we have something like that in wickets¿? how can I implement this behaviour without a thread¿? I mean something that is executing since my application is deployed and executing a method every N time!! thank you very much guys, I go to sleep in Spain it is 1.00 AM and tomorrow I have to go to work!! Waiting some feedback Cheers!! -- View this message in context: http://apache-wicket.1842946.n4.nabble.com/Very-interesting-question-my-boss-complain-about-one-of-my-implementations-tp2233874p2233874.html Sent from the Wicket - User mailing list archive at Nabble.com. - To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org For additional commands, e-mail: users-h...@wicket.apache.org Does the update to the database have anything to do with the webapp? Or is it something totally unrelated? You don't really give us enough information to go on. Struts timers (at least the ones I know of) are for timing how long a webpage takes to render. Perhaps he's confused with TimerTasks, which are in Java, not Struts. -- Jeremy Thomerson http://www.wickettraining.com
Re: Very interesting question... my boss complain about one of my implementations...
On Thu, May 27, 2010 at 5:16 PM, Jeremy Thomerson jer...@wickettraining.com wrote: On Thu, May 27, 2010 at 5:46 PM, Victor_Trapiello vic...@trapiello.netwrote: Hello guys! I had a terrible day because one of my bosses complain about how I have done one task of a project, we had to implement something that updates a field in the database, my brilliant idea was to create a thread inside the wicket init method that makes a query to the database every 3 hours and updates the fields. My boss said that it is not a good practice and he recomended to use something like in Struts called Timers, do we have something like that in wickets¿? how can I implement this behaviour without a thread¿? I mean something that is executing since my application is deployed and executing a method every N time!! thank you very much guys, I go to sleep in Spain it is 1.00 AM and tomorrow I have to go to work!! Waiting some feedback Cheers!! -- View this message in context: http://apache-wicket.1842946.n4.nabble.com/Very-interesting-question-my-boss-complain-about-one-of-my-implementations-tp2233874p2233874.html Sent from the Wicket - User mailing list archive at Nabble.com. - To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org For additional commands, e-mail: users-h...@wicket.apache.org Does the update to the database have anything to do with the webapp? Or is it something totally unrelated? You don't really give us enough information to go on. Struts timers (at least the ones I know of) are for timing how long a webpage takes to render. Perhaps he's confused with TimerTasks, which are in Java, not Struts. -- Jeremy Thomerson http://www.wickettraining.com I also do not understand how the timer is related to the web application. If you are using some logic to update the database every N time, then I suggest using Quartz: https://quartz.dev.java.net/ http://www.quartz-scheduler.org/overview/index.html We implement a quartz task that runs every 15 minutes to pull data over a third party API and update our database. Wicket, like any web application, displays the updated information on the next [LoadableDetachableModel] data refresh which satisfies our requirements. (If you use an ApplicationContext (e.g. Spring) you could even update a local cache / cache cluster (e.g ehcache).) The only tricky part of Quartz has been deploying it properly on an application cluster -- to avoid having the same scheduled tasks run simultaneously. If you have a backend app server you can purpose running scheduled tasks on, then it is simple. -gnul - To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org For additional commands, e-mail: users-h...@wicket.apache.org
Re: Very interesting question... my boss complain about one of my implementations...
I had a terrible day because one of my bosses complain about how I have done one task of a project, we had to implement something that updates a field in the database, my brilliant idea was to create a thread inside the wicket init method that makes a query to the database every 3 hours and updates the fields. I don't think it is horrible, though it sounds a bit like a quick fix. It doesn't have to do with your web application of course, though Wicket's application object is a natural place to do bootstrapping. Struts timers (at least the ones I know of) are for timing how long a webpage takes to render. Perhaps he's confused with TimerTasks, which are in Java, not Struts. I think that in general using TimerTask is better than just spawning of a thread. If you are using some logic to update the database every N time, then I suggest using Quartz: https://quartz.dev.java.net/ http://www.quartz-scheduler.org/overview/index.html And using Quartz is even better. The only tricky part of Quartz has been deploying it properly on an application cluster -- to avoid having the same scheduled tasks run simultaneously. If you have a backend app server you can purpose running scheduled tasks on, then it is simple. Quartz does the job, and for my work I created a nice Guice abstraction for it, but I've never been crazy about the API and implementation (though it's stable and reasonably efficient). I wonder if anyone has any real life experience with http://sna-projects.com/azkaban they want to share? Eelco - To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org For additional commands, e-mail: users-h...@wicket.apache.org
