コアデータの永続オブジェクトにNSArray(NSString)を使用する

gistfile3.txt

コアデータの永続オブジェクトにNSArray(NSString)を使用する。
１、ストアには適当なデリミタで繋げられたNSStringを格納。
２、NSArrayは「一時」「未定義」型の属性として定義。
３、アクセサで分離、結合を行う。

XSPFMInfomationObject.h

//
//  XSPFMInfomationObject.h
//  XspfManager
//
//  Created by Hori,Masaki on 09/11/02.
//  Copyright 2009 masakih. All rights reserved.
//

#import <CoreData/CoreData.h>

@class XSPFMXspfObject;

@interface XSPFMInfomationObject :  NSManagedObject  
{
}

@property (retain) NSArray *voiceActors;
@property (retain) NSString * voiceActorsList;

@end

XSPFMInfomationObject.m

// 
//  XSPFMInfomationObject.m
//  XspfManager
//
//  Created by Hori,Masaki on 09/11/02.
//  Copyright 2009 masakih. All rights reserved.
//

#import "XSPFMInfomationObject.h"

@implementation XSPFMInfomationObject 

@synthesize voiceActors;
@dynamic voiceActorsList;

static NSString *const VoiceActorsDelimiter = @":::";

- (NSArray *)voiceActors
{
	[self willAccessValueForKey:@"voiceActors"];
	NSArray *voiceActors = [self primitiveValueForKey:@"voiceActors"];
	[self didAccessValueForKey:@"voiceActors"];
	if (voiceActors == nil) {
		NSString *voiceActorsList = [self valueForKey:@"voiceActorsList"];
		if (voiceActorsList) {
			voiceActors = [voiceActorsList componentsSeparatedByString:VoiceActorsDelimiter];
			[self setPrimitiveValue:voiceActors forKey:@"voiceActors"];
		}
	}
	return voiceActors;
}
- (void)setVoiceActors:(NSArray *)actors
{
	[self willChangeValueForKey:@"voiceActors"];
	[self setPrimitiveValue:actors forKey:@"voiceActors"];
	[self didChangeValueForKey:@"voiceActors"];
	[self setValue:[actors componentsJoinedByString:VoiceActorsDelimiter] forKey:@"voiceActorsList"];
}

@end