Re: Query with several indexes

Hilaire Fernandes a écrit :
> Hilaire Fernandes a écrit :
> 
>> IFIDbSession
>>     commit: [IFIModels links
>>         addIndex: (MaCompetencyIndex attribute:
#parent);
>>         addIndex: (MaCompetencyIndex attribute:
#owner);
>>         addIndex: (MaCompetencyIndex attribute:
#necessary);
>>         addIndex: (MaFloatIndex attribute:
#threshold);
>>         addIndex: (MaFloatIndex attribute:
#transfer)]
> 
> 
> In case of doubt I updated the server image with the
latest code of my 
> application. So it knows about my MaCompetencyIndex
definition.
> The same error appears, but this time the error message
is different:
> 'attempt to index non-existent element in an ordered
collection'

Okay, I figure out index must be created before inserting
any element in 
a MagmaCollection. Incidentally I realized indexes are not
automatically 
updated when an indexed attribute/aspect is changed. Now I
understand 
what is for the noteOldKeysFor: message.
Is it that correct?

What is the preferred solution when one need to add an index
to a 
MagmaCollection already populated with elements?

Using OBDB turns to be quite complex.

Hilaire

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