Using that API, or anything else that would set the type of the
attribute does what you'd expect, it sets the type of the attribute.
The most significant use of that type is, as you're expecting, doing
conversions. When you have a direct mapping to a variable, it will
have a converter, and the converter you get is based on the type of
the field and the type of the attribute. So in the case you're
describing, where you have an Integer type and some kind of numeric
field, you'd presumably get a #numberToInteger converter, which
would get called via convertedStValueOf:, and end up in
convertToInteger:for:. The same sort of techniques let you
automatically do things like having a boolean instance variable
mapped to a number or string in the database.
If I read something which has an integer type, I do see it end up in
that converter method, whose code is
^aNumber isNil ifTrue: [aNumber] ifFalse: [aNumber asNumber
asInteger].
So yes, I'd expect it to get converted to an integer. If you're not
seeing that, then something peculiar is going on.
Hi
Im building a descriptor system with Glorp and the
classModelForCLASSNAME.
For a DirectMapping i usually use somehting like:
aClassModel newAttributeNamed: #anAttribute.
Ive noticed that i may also say:
aClassModel newAttributeNamed: #anAttribute type: Integer.
I assumed that this would specify that anAttribute is an
instance variable
of type Integer. The corresponding field in the DB table is a
float. When
loading the object from the DB, the instance variable
anAttribute is still
loaded as a float. My question is what is the point of
#newAttribute:type:?
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