On Apr 10, 2009, at 11:27, Richard Somers wrote:
On Apr 10, 2009, at 11:54AM, Quincey Morris wrote:
Core Data runs a custom transformer in the forward direction, but
it runs the default transformer in the reverse direction.
The documentation states "Core Data uses an instance of
NSValueTr
On Apr 10, 2009, at 11:54AM, Quincey Morris wrote:
Core Data runs a custom transformer in the forward direction, but it
runs the default transformer in the reverse direction.
The documentation states "Core Data uses an instance of
NSValueTransformer to convert the attribute to and from an i
On Apr 10, 2009, at 09:57, Richard Somers wrote:
The documentation indicates NSKeyedUnarchiveFromDataTransformerName
supports reverse transformation. Single class with bidirectional
transformation. Use –transformedValue: to go one way and –
reverseTransformedValue: to go the other way.
Er,
On Apr 10, 2009, at 10:41AM, Quincey Morris wrote:
However, the NSKeyedUnarchiveFromDataTransformerName transformer
transforms an instance of NSData to an instance of whatever was
archived in it.
So, the default transformer goes *from* NSData. Custom transformers
go *to* NSData.
So, you
On Apr 10, 2009, at 08:07, Keary Suska wrote:
I would file a bug against the documentation for clarification. I
would hazard the guess that Core Data handles transformations
differently when you specify a transformer name and when you don't.
Hence the different errors.
That's exactly righ
On Apr 10, 2009, at 9:07AM, Keary Suska wrote:
Who cares otherwise?
I am just a poor ignorant programmer trying to come to grips with non-
standard persistent attributes (C Structs) in Core Data. The lack of a
sample code application which illustrates this makes life even more
difficult.
On Apr 10, 2009, at 8:15 AM, Richard Somers wrote:
In an Xcode data model window, a transformable attribute has an
input labeled "Value Transformer Name:".
The Core Data Programming Guide says "By default, Core Data uses the
NSKeyedUnarchiveFromDataTransformerName transform
In an Xcode data model window, a transformable attribute has an input
labeled "Value Transformer Name:".
The Core Data Programming Guide says "By default, Core Data uses the
NSKeyedUnarchiveFromDataTransformerName transformer, however you can
specify your own transformer if
