[Zope-CMF] Re: Abusing GenericSetup during traditional installs

[yuppie]

Hi Stefan!


Stefan H. Holek wrote:
> On 17. Aug 2006, at 15:50, yuppie wrote:
> 
>> My approach would be to improve the catalog adapters. Even if you 
>> stick to the behavior implemented in setuphandlers.py it would have 
>> been easier and more straight forward to implement it in a subclass of 
>> ZCatalogXMLAdapter, overriding the default adapter.
>>
> 
> I have tried this initially but found it impossible to "override" the 
> existing adapter for IZCatalog. I always got complaints from the adapter 
> machinery about duplicate registrations. I may be missing something here...

Did you try it using an overrides.zcml file? Works for me - at least 
with other adapters.

>> But fixing some general catalog adapter issues will make your special 
>> behavior obsolete:
>>
>> - The adapters should compare the new settings with the existing ones 
>> and make sure indexes are only updated if they are actually changed. 
>> This is not implemented so far.
>>
>> - The adapters should modify existing indexes if the profile contains 
>> new settings. This is not implemented for the 'extra' elements.
>>
>> - Reindexing might be very expensive. That's the reason why 
>> GenericSetup does no reindexing, you have to do it manually. We need a 
>> better solution for that, maybe some bookkeeping which indexes need to 
>> be reindexed and a button in the setup tool that triggers reindexing.
> 
> +1 on all accounts

As always: contributions are welcome...


Cheers,

	Yuppie