Core Data Question

[John Black]

Hey guys,

I have a wee but of a problem in regards to using CoreData in my project. One of the objects that i have created contains an array of NSNumbers but looking at the attribute types in the the data model there doesn't seem to be any NSArray type (I should have looked). Is there any way around this problem or am i going to have to extract all of these values and assign them to an object variables and then store them in the model?

[Mick Walker]

You could always save it as Binary Data simply by converting it to NSData and then costing it back as you need it.

[Mick Walker]

*casting / converting rather

Mick Walker said:

You could always save it as Binary Data simply by converting it to NSData and then costing it back as you need it.

[Vinny Coyne]

This might be a bit overkill, but you could create a new object with a single NSNumber.

Then, in your current object create a one-to-many relationship to the new object type.

[John Black]

i got round this problem by converting the array of ints into a string separated by colons and then breaking them up again when i needed them.

[Damian OSuilleabhain]

For the record, I'm storing arrays in Core data no problems. Datatype in Core Data in Binary.

Save:
NSData *pointsAsData = [NSKeyedArchiver archivedDataWithRootObject:walkManager.locations];
[walkManager.route setValue:pointsAsData forKey:@"points"];

note: "walkManager.locations" is an NSMutableArray
"walkManager.route" is an NSManagedObject

Retrieve:
NSData* thePointsAsData = [walkManager.route valueForKey:@"points"];
NSArray* inProgressRoutePoints = [NSKeyedUnarchiver unarchiveObjectWithData:thePointsAsData];


Ok everyone, now guess what this app I'm working on does? ;-)