If it's still of use, I did this with predicateWithFormat: and -description wrapped up in a NSValueTransformer subclass. In other words I store a string representation in the core-data model. I don't know if this is always valid, but it works well for the predicates in my app.
Martin ----------------------------- Martin Hewitson AEI Hannover ----------------------------- On 17 Oct 2010, at 14:18, Ivan C Myrvold <i...@myrvold.org> wrote: > After some thought I found out that I can use NSkeyedArchiver and > NSKeyedUnarchiver to make an NSData and back to NSPredicate instance. Then it > is possible to store NSData into Core Data. > > > Den 17. okt. 2010 kl. 12.48 skrev Ivan C Myrvold: > >> I am building an application where I am using an NSPredicateEditor. Now I >> would like to store the resulting NSPredicate from the NSPredicateEditor in >> Core Data. I am not sure how to accomplish that. >> I was thinking about using NSCoder, but not sure how to use NSCoder for this >> as it usually is used to archive directly to disk and not with Core Data. >> >> Do anyone have any hint? >> >> _______________________________________________ >> >> Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) >> >> Please do not post admin requests or moderator comments to the list. >> Contact the moderators at cocoa-dev-admins(at)lists.apple.com >> >> Help/Unsubscribe/Update your Subscription: >> http://lists.apple.com/mailman/options/cocoa-dev/ivan%40myrvold.org >> >> This email sent to i...@myrvold.org >> > > > _______________________________________________ > > Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) > > Please do not post admin requests or moderator comments to the list. > Contact the moderators at cocoa-dev-admins(at)lists.apple.com > > Help/Unsubscribe/Update your Subscription: > http://lists.apple.com/mailman/options/cocoa-dev/martin.hewitson%40aei.mpg.de > > This email sent to martin.hewit...@aei.mpg.de _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
