Comments on: Task Scheduling Simplifications in Spring 3.0

By: Bing

Bing — Tue, 18 Oct 2011 15:32:15 +0000

Great Job. Could you please give some clue for how to download the whole project from subversion? I tried eclipse subclipse and TortoiseSVN, and got error. Thanks.

By: Rajive

Rajive — Tue, 18 Oct 2011 12:05:14 +0000

great job

By: Andrew Swan

Andrew Swan — Thu, 29 Sep 2011 03:55:42 +0000

@vikas, the namespace is http://www.springframework.org/schema/task and its location is http://www.springframework.org/schema/task/spring-task-3.0.xsd

By: Mark Fisher

Mark Fisher — Mon, 12 Sep 2011 13:29:04 +0000

@Andreas You are correct. The task scheduler itself is really a "background" process. It sounds like what you want would need to be driven by a Session listener that schedules a task upon Session-creation and cancels that task upon Session-destruction/timeout.

By: Mark Fisher

Mark Fisher — Mon, 12 Sep 2011 13:03:01 +0000

@Nitish The purpose of that main() method is nothing more than a bootstrap (it creates the ApplicationContext from the config.xml). In a webapp, you don't even need that, because you can rely on Spring's ContextLoaderListener instead. See this section of the Spring reference manual for more detail:http://static.springsource.org/spring/docs/3.0.6.RELEASE/spring-framework-reference/htmlsingle/spring-framework-reference.html#context-create

Hope that helps,
Mark

By: Andreas Höhmann

Andreas Höhmann — Mon, 12 Sep 2011 12:33:35 +0000

How can I run async Tasks with autowired dependencies?

Example:
class worker {
@Autowired
Foobar importantForWork;
@Async void doit() {
importantForWork.calculate();
}
}

This will not work if "Foobar importantForWork" is session scoped … why?

I think the new thread doesnt have the correct request attributes to resolve the
right bean from the session scoped proxy.

Any ideas?

By: Nitish

Nitish — Mon, 12 Sep 2011 11:24:57 +0000

Hi All,

In the above given example By – Mark Fisher. there is a main() method. In java web application using ecplise and spring as framework how is it possible to execute a class with main() method. plsss sum1 help me on this…..m really in bad need of this example.

By: Dave Syer

Dave Syer — Wed, 13 Jul 2011 09:49:06 +0000

@Rahul: I guess you could use @Async in an item processor POJO (wrapped in ItemProcessorAdapter), or an a regular ItemProcessor. You would still need to collect the results, so AsyncItemWriter would be useful for that. I'm not sure it buys you much to use @Async, other than the centralization of the TaskExecutor configuration.

By: RahulSharna

RahulSharna — Wed, 13 Jul 2011 08:59:07 +0000

@Mark, truly a Great writeup.

@Dave, Is there a way by which we can incorporate these @Async features to replace AsyncItemProcessor & AsyncItemWriter as a part of Spring Batch Integration

By: Diego

Diego — Fri, 24 Jun 2011 19:11:16 +0000

Thanks Dave. The problem is solved using your orientation. I was defined two contexts loading beans…