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Posted to users@cocoon.apache.org by Stefan Klein <kl...@web.de> on 2004/01/04 11:16:42 UTC
Re: App level variable in flow
Upayavira,
> How do I store a java object in some application context or an
> application level variable, just once during servlet container startup,
>
> when I'm writing an app that uses flow?
Could you not write it as I component, include it in cocoon.roles so that
it'll be loaded automatically at startup and access it in flow via
cocoon.getComponent()?
Stefan
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Re: App level variable in flow
Posted by Upayavira <uv...@upaya.co.uk>.
Stefan Klein wrote:
>Upayavira,
>
>
>
>>How do I store a java object in some application context or an
>>application level variable, just once during servlet container startup,
>>
>>when I'm writing an app that uses flow?
>>
>>
>
>Could you not write it as I component, include it in cocoon.roles so that
>it'll be loaded automatically at startup and access it in flow via
>cocoon.getComponent()?
>
>
Yes, but flow is supposed to be lightweight, and doing that is a lot of
work to do, and I'd like to avoid, if poss, any changes to the Cocoon
webapp (otherwise, installing on new machines is hassle).
Jeremy suggested (on the dev list) instantiating the object in the
opening lines (outside methods) in flowscript:
if (cocoon.context.myObject == null) {
cocoon.context.myObject = new Packages.mypackage.MyObject();
}
Then, the first time a flow is accessed after servlet startup, my object
is created. From then on, it is available in memory.
That should be good enough for me, and it is only 2 1/2 lines of code,
which is the kind of thing I had in mind!!
Reinhard also suggested using Context listeners that can be configured
using web.xml, although I haven't looked into that approach.
Regards, Upayavira
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