> On Sat, 2010/03/06, Joanna Carter wrote:
> This quote from the Core Data Programming Guide:
>
> There are some interactions between fetching and
> the type of store. In the XML, binary, and
> in-memory stores, evaluation of the predicate and
> sort descriptors is performed i
On 3/5/10 5:52 PM, Mark Sanvitale said:
>However, my experience seems to demonstrates that the statement "We (the
>system) cannot necessarily translate "arbitrary" predicates into SQL
>queries" is also true,
It definitely is.
>and I believe this concept should be expanded to
>spell out exactly w
Hi Mark
> Thanks all for the sharing of thoughts. Glad someone could confirm that what
> I was attempting did not make sense from the SQL perspective (which I am a
> newbie to). But, like Sean wrote, Core Data seems to be presented as an
> abstraction ABOVE the layer which implements the actu
Thanks all for the sharing of thoughts. Glad someone could confirm that what I
was attempting did not make sense from the SQL perspective (which I am a newbie
to). But, like Sean wrote, Core Data seems to be presented as an abstraction
ABOVE the layer which implements the actual storage/retrie
Hi Sean
> But you shouldn't have to... Core Data is "not a database" and its use
> of SQL is an implementation detail. One shouldn't have to know anything
> about SQL to use Core Data. Of course, in practice, such knowledge is
> helpful, as you say.
You have a point but, in theory, predicates a
On 3/5/10 10:18 PM, Joanna Carter said:
>> So, here is my plea for help. I have a predicate of the form:
>" BEGINSWITH path". In other words, I am searching
>entities that possess a (string) property "path" to look for one whose
>path is a prefix of some string (which is inserted into the predic
Hi Mark
> So, here is my plea for help. I have a predicate of the form: " string> BEGINSWITH path". In other words, I am searching entities that
> possess a (string) property "path" to look for one whose path is a prefix of
> some string (which is inserted into the predicate via the
> fetch-r
RANT AGAINST DOCUMENTATION:
I have searched (a lot) and found various other pleas for help of the form, "I
am trying to do a Core Date fetch on an SQL-backed store and it is failing
because something is wrong with my predicate." I thought some investigate
could promote my plea beyond this basi
