Printing Core Data - core-data

Question

I'm working on a program and I have created a fetch request to grab the data that I need to print. I'm able to log information like this:
2010-10-03 16:57:10.362 lzshow7.2[2537:10b] <NSManagedObject: 0x2ca120> (entity: Song; id: 0x2afcb0 <x-coredata://CF5A85CE-BE0F-4ADC-979A-7F4214A8FB19/Song/p9> ; data: {
cueName = Freedom;
cueNo = 014;
cueNotes = nil;
songToInstrument = "<relationship fault: 0x2b1800 'songToInstrument'>";
})
How do I seperate the properties like cueName, cueNo, cueNotes out to be printed?
Here is the fetch request:
//Managed object context???
NSLog(#"setting Managed object stuff");
NSManagedObjectContext *context=[[[NSDocumentController sharedDocumentController] currentDocument] managedObjectContext];
NSLog(#"Second line of Managed object stuff");
//fetch request:
NSLog(#"Starting to fetch:");
NSFetchRequest *request = [[NSFetchRequest alloc] init];
NSEntityDescription *entity = [NSEntityDescription entityForName:#"Song" inManagedObjectContext:context];
[request setEntity:entity];
NSSortDescriptor *sortDescriptor = [[NSSortDescriptor alloc] initWithKey:#"cueNo" ascending:YES];
NSArray *sortDescriptors = [[NSArray alloc] initWithObjects:sortDescriptor, nil];
[request setSortDescriptors:sortDescriptors];
[sortDescriptors release];
[sortDescriptor release];
NSError *error;
NSMutableArray *mutableFetchResults = [[context executeFetchRequest:request error:&error] mutableCopy];
for (id obj in mutableFetchResults)
NSLog(#"%#", obj);
NSLog(#"finished looping");
//Error handling
if (mutableFetchResults == nil) {
// Handle the error.
}
//[self setEventsArray:mutableFetchResults];
[mutableFetchResults release];
[request release];
}
Any help would be greatly appreciated.
Thank you,
Loren

Answer 1

You use basically the opposite of how you stored the values in your managedObject
NSString *name = [song valueForKey:#"cueName"];
NSNumber *number = [song valueForKey:#"cueNo"];
NSString *notes = [song valueForKey:#"cueNotes"];
...
NSLog(#"%# %# %#", name, number, notes);
if you've created a custom Class of your entity you could add this method:
- (NSString *)description {
NSString *name = [song valueForKey:#"cueName"];
NSNumber *number = [song valueForKey:#"cueNo"];
NSString *notes = [song valueForKey:#"cueNotes"];
...
NSString *returnString = [NSString stringWithFormat:#"%# %# %#", name, number, notes];
return returnString;
}
With this method you can just use NSLog(#"%#", object); to get a nice formatted output