[Zope] Catalog aware

[Tino Wildenhain]

Garito wrote:
> Andreas Jung escribió:
>>
>>
>> --On 19. Juli 2006 09:34:58 +0200 Garito <garito at sistes.net> wrote:
>>
>>> Andreas Jung escribió:
>>>>
>>>>
>>>> --On 18. Juli 2006 15:14:54 +0200 Garito <garito at sistes.net> wrote:
>>>>
>>>>> Hi all!
>>>>>
>>>>> Is possible to create an object (for example a Page Template) and
>>>>> make it
>>>>> catalog aware?
>>>>
>>>> Look at the CatalogAware mixin class.
>>> But with this class I could create a new class of PT Catalog aware, 
>>> isn't
>>> it?
>>> I would like to convert a normal PT is this possible?
>>
>> It makes little sense to index the contents of PTs. PTs are used to 
>> present a view on a particular instance of your class but not for 
>> providing content
>> itself.
>>
>>>>>
>>>>> I wonder why the objects aren't catalogable by default (I need all my
>>>>> object catalogables)
>>>>>
>>>>
>>>> Because Zope is not CMF and Zope is not Plone. Because you need this
>>>> feature it does not mean that everyone needs this feature by default.
>>>>
>>>> -aj
>>> Sure but Is the cost so big?
>>
>> This is not the question. If you need catalog awareness, either 
>> implement it as stated above or use one of the frameworks....little 
>> need to discuss the pros and cons...by default Zope default 
>> content-types  don't depend on the catalog. CMF and Plone depend on 
>> the catalog for various reasons. If you have the requirement to use a 
>> catalog you have the mentioned options.
>>
>> -aj
>>
> Yes but what about something like
> 
> if self.default_catalog != '': self.reindex_object()
> 
> ?
> 
> I think it's a question of preferences
> 
> Then can I "inject" Catalog awarness to an object?

Yes you can. Its possible with so called monkeypatching.
However if you can do that, you better just write
a product w/ subclasses of the standard zope objects and
your CatalogAwareness. Its easy and clean and you dont
interfere with further development of zope.

Regards
Tino