Re: [Flamerobin-devel] Domain::isSystem() question

[Nando D. <na...@de...>]

Milan, Michael,

>> 1. UDD (user defined domain) - explicitly defined using CREATE
>> DOMAIN 2. SD (system domain) - RDB$ domain with a name, not a
>> number after RDB$, say RDB$SYSTEM_FLAG 3. AD (automatic domain) -
>> assigned for user tables when column is created without explicit
>> domain RDB$123
>>
>> - only UDD should be listed in tree and shown in
>> FieldPropertiesDialog - when both domain and datatype is shown for
>> column in tree or property page, we should show UDD and SD if
>> available - when extracting DDL, the priority should be: UDD, SD,
>> datatype string, AD
>>
>> In this last case AD is shown if datatype is not detected.
>> Shouldn't ever happen unless system tables are modified directly.
>>
>> Now, I don't see any of these requires that we have 3 collections.
>> I see only a need for two, one containing UDDs and other containing
>> SDs and ADs. Difference between SD and AD is only observed for a
>> particular domain, never as a collection.
>
> Nice summary, I completely agree with it. I'll see what I can do.

I agree as well, but I'd go to the point of saying that ADs are not even
domains at all, and FR shouldn't bother about them when reading
RDB$FIELDS. They aren't needed anyway, except in this case:

>> In this last case AD is shown if datatype is not detected.

I can't imagine how it can ever be.
-- 
Nando Dessena