[webbeans-dev] CDI Quartz Extension and SE Example

[Pete Muir]

I agree that the primary focus of Seam 3 is around writing enterprise  
applications (which of course doesn't exclude SE apps!), but I see no  
problem with having other example apps, especially in the sandbox.

On 30 Jun 2009, at 09:34, <pete at screamingcoder.com> <pete at screamingcoder.com 
 > wrote:

> OK that's all implemented. The only slight differences are:
>
> - the properties file where the named scheduls are defined is called
> scheduler.properties and lives at the root of the classpath  
> (optionally
> provided by the client application)
>
> - typesafe schedule binding types use the same mechanism as used by
> interceptor binding types to approximate inheritence, ie:
>
> @Scheduled("after.hours")
> @BindingType
> @Retention(RUNTIME)
> public @interface AfterHours {};
>
> - the type for arbitrarily scheduled events is now called Event, not
> Schedule.
>
> I'm ready to check this in, just need to find some decent internet  
> access
> (probably next week) so I can chat with Pete M and Dan, and then  
> perform
> the checkin.
>
> Just have one question: Do you want the free-memory grapher example  
> app
> which demostrates usage of this module? If so the I'm not sure how  
> that
> will work since it is a SE/Swing app and this module will be going  
> into the
> Seam modules sandbox. I think it will look a little weird for an SE  
> app to
> depend on a Seam module. I guess I'm really wondering why the ties  
> to Seam
> when this is a generally useful module?
>
> Cheers,
>
> Pete.
>
>
>
>
>
> On Thu, 25 Jun 2009 11:37:46 +0100, Peter Royle
> <howardmoon at screamingcoder.com> wrote:
>> OK will do. I'm just implementing the stuff below and cleaning up a
>> bit first. Got a 24hr flight ahead of me so should be able to get a
>> lot done - if I'm not rendered a zombie :).
>>
>>
>> On 19/06/2009, at 7:12 PM, Pete Muir wrote:
>>
>>> How about putting this in Seam sandbox/modules for now?
>>>
>>> Talk to Dan Allen offline about the structure for the code (but
>>> basically it is like webbeans-extensions).
>>>
>>> Also, ping me and I'll sort out the SVN permissions.
>>>
>>> On 28 May 2009, at 22:45, Peter Royle wrote:
>>>
>>>> Hi,
>>>>
>>>> I know you're all really busy right now with the spec updates, but
>>>> I've got a new extension for possible inclusion into WebBeans, plus
>>>> a new example app for SE which uses it.
>>>>
>>>> == Quartz Extension ==
>>>>
>>>> WebBeans-Quartz.zip
>>>>
>>>> The extension is a Quartz extension. It basically fires events
>>>> @Every Second, @Every Minute and @Every Hour, which can be observed
>>>> like so:
>>>>
>>>> public void updateSomething(@Observes @Every Hour hour) { // blah }
>>>>
>>>> On startup the extension first checks for the presence of observers
>>>> for each type of event and if there are no observers for a
>>>> particular type of event, no events will be scheduled.
>>>>
>>>> I intend to extend it by:
>>>> 1)  introducing a way to define arbitrary schedules (in annotations
>>>> or in a properties file which is then referenced by name in an
>>>> annotation - which can then be made typesafe by subclassing the
>>>> annotation). Eg:
>>>>
>>>>   package org.jboss.webbeans.extension.scheduler;
>>>>   public @interface Scheduled {
>>>>       String name();
>>>>   }
>>>> -----------
>>>>   public @interface AfterHours extends Scheduled{
>>>>        String name() default "afterHours";
>>>>   }
>>>> -----------
>>>>   schedule.properties:
>>>>   afterHours=0 1 * * * *
>>>> -----------
>>>>   public void batchProcess(@Observes @AfterHours Schedule
>>>> schedule) { ... }
>>>>
>>>> 2) Adding whatever is necessary to make this usable in EE
>>>> environment. Any pointers?
>>>>
>>>> 3) Any other suggestions?
>>>>
>>>> == Memory Graph Example ==
>>>>
>>>> MemoryGrapher.zip
>>>>
>>>> This is another Swing based example, which renders a graph of the
>>>> VM's free memory, updating every second and calling garbage
>>>> collection every minute using the above extension. It's a nice
>>>> concise example of how to bootstrap and shutdown SE, how to observe
>>>> events and how to use the injectable logger. Plus everyone loves a
>>>> pretty graph!
>>>>
>>>> I know there is some obvious clean up work required, and maybe
>>>> removing the name Quartz (?) - which I'm happy to do prior to
>>>> checking in.
>>>>
>>>> What do you think?
>>>>
>>>>
>>>> Pete.
>>>>
>>>>
>>>>
>>>>
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>>>> https://lists.jboss.org/mailman/listinfo/webbeans-dev
>>>
>>
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