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Question about Tomcat capabilities, triggers

Axel Richardson
Greenhorn

Joined: Jun 28, 2012
Posts: 3
Hello,

I was recently introduced to Tomcat, so I don't have a lot of experience in that department.
As I have understood Tomcat is stateless.

But I am still wondering if there is a possibility to add triggers of some sort?
Like its able to execute a method in every 24 hours or something similar?(e.g. threads and timers?)

Any help is appreciated.

Best Regards,
Axel.R
Ulf Dittmer
Marshal

Joined: Mar 22, 2005
Posts: 42635
    
  65
No need to involve Tomcat, check out the java.util.Timer and TimerTask classes. You can set those up in a context listener of your web app.


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Tim Holloway
Saloon Keeper

Joined: Jun 25, 2001
Posts: 16250
    
  21

Welcome to the JavaRanch, Axel!

I suppose that you could describe Tomcat as "stateless". I never considered it in that light.

Tomcat isn't really the ideal container for non-web tasks. It does have the advantage of being a central nexus for different types of work, but that's about its only virtue for non-web functionality. You would be better off considering a simple non-web container such as a workflow engine, Enterprise Service Bus or OSGi container (these things tend to overlap). A place where I used to work used an Inversion of Control-based container descended from Apache's Avalon project. There were a whole raft of these things, although most of them have faded away now, and I never discovered what was supposed to fill the vacancy.

For scheduling, there's Quartz or the OS "cron" facility (Windows has a similar scheduler).


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