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Posted to users@cocoon.apache.org by David Legg <da...@searchevent.co.uk> on 2005/10/13 01:33:43 UTC
Where's the best place to run code at Cocoon startup?
I've got some singleton Java classes that I'd rather configure and init at
Cocoon init time instead of the first time a page is requested. Where's the
best place to do this?
I've looked at the xconf file but I'm not sure if this is what I need.
David Legg
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Re: Where's the best place to run code at Cocoon startup?
Posted by Geert Josten <Ge...@daidalos.nl>.
>> Another solution I use is to inherit the Cocoon servlet and override
>> the standard servlet init method.
>
>
> Thanks for the suggestion. I need to configure the component before use
> so it makes sense to use the Avalon framework.
>
> Actually, doing this has given me the excuse I needed to explore the
> murky world of the Avalon component manager. I'm finding it tough going
> though because there is little documentation to help with integrating a
> component into Cocoon. Until I started researching this I had no idea
> of the history and conflict involved with Avalon. I had heard of
> 'Inversion of Control' (IoC) but little clue about what that meant. Now
> I've got images in my head of syringes injecting things into classes!
You probably already found out, but there are (at least) three stages to configure/init you
component. At 'creation' time, at configure time and at run time. I may be wrong as I didn't dive
into the depths of Avalon, but I believe what you are looking for is part of the Serviceable
interfaces. This adds a recycle and setup function..
HTH,
Geert
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Re: Where's the best place to run code at Cocoon startup?
Posted by David Legg <da...@searchevent.co.uk>.
David Perez wrote:
> Another solution I use is to inherit the Cocoon servlet and override the
> standard servlet init method.
Thanks for the suggestion. I need to configure the component before use so
it makes sense to use the Avalon framework.
Actually, doing this has given me the excuse I needed to explore the murky
world of the Avalon component manager. I'm finding it tough going though
because there is little documentation to help with integrating a component
into Cocoon. Until I started researching this I had no idea of the history
and conflict involved with Avalon. I had heard of 'Inversion of Control'
(IoC) but little clue about what that meant. Now I've got images in my head
of syringes injecting things into classes!
David Legg
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Re: Where's the best place to run code at Cocoon startup?
Posted by Sylvain Wallez <sy...@apache.org>.
David Perez wrote:
> Sylvain Wallez schrieb:
>
>> David Legg wrote:
>>
>>> I've got some singleton Java classes that I'd rather configure and
>>> init at Cocoon init time instead of the first time a page is
>>> requested. Where's the best place to do this?
>>>
>>> I've looked at the xconf file but I'm not sure if this is what I need.
>>
>>
>> Yes, this is the right place. Make sure your class implements the
>> Avalon ThreadSafe interface and declare it in cocoon.xconf
>>
> Another solution I use is to inherit the Cocoon servlet and override
> the standard servlet init method.
Works also. However, this prevents it to access any of the
Cocoon-provided components.
Sylvain
--
Sylvain Wallez Anyware Technologies
http://people.apache.org/~sylvain http://www.anyware-tech.com
Apache Software Foundation Member Research & Technology Director
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Re: Where's the best place to run code at Cocoon startup?
Posted by David Perez <cr...@yahoo.es>.
Sylvain Wallez schrieb:
> David Legg wrote:
>
>> I've got some singleton Java classes that I'd rather configure and
>> init at Cocoon init time instead of the first time a page is
>> requested. Where's the best place to do this?
>>
>> I've looked at the xconf file but I'm not sure if this is what I need.
>
>
>
> Yes, this is the right place. Make sure your class implements the
> Avalon ThreadSafe interface and declare it in cocoon.xconf
>
> Sylvain
>
Another solution I use is to inherit the Cocoon servlet and override the
standard servlet init method.
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Re: Where's the best place to run code at Cocoon startup?
Posted by Sylvain Wallez <sy...@apache.org>.
David Legg wrote:
> I've got some singleton Java classes that I'd rather configure and
> init at Cocoon init time instead of the first time a page is
> requested. Where's the best place to do this?
>
> I've looked at the xconf file but I'm not sure if this is what I need.
Yes, this is the right place. Make sure your class implements the Avalon
ThreadSafe interface and declare it in cocoon.xconf
Sylvain
--
Sylvain Wallez Anyware Technologies
http://people.apache.org/~sylvain http://www.anyware-tech.com
Apache Software Foundation Member Research & Technology Director
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