我可以在 Xcode 4 中删除 Core Data 动态生成的方法吗？

Posted 2023-03-04

【中文标题】我可以在 Xcode 4 中删除 Core Data 动态生成的方法吗？

【英文标题】：Can I delete Core Data's dynamically generated methods in Xcode 4?

【发布时间】：2011-04-29 18:56:33

【问题描述】：

Core Data 生成了这四种方法。我可以删除它们，因为它们是动态生成的，对吗？

@implementation User
// . . .
@dynamic authorizations;

- (void)addAuthorizationsObject:(NSManagedObject *)value     
    NSSet *changedObjects = [[NSSet alloc] initWithObjects:&value count:1];
    [self willChangeValueForKey:@"authorizations" withSetMutation:NSKeyValueUnionSetMutation usingObjects:changedObjects];
    [[self primitiveValueForKey:@"authorizations"] addObject:value];
    [self didChangeValueForKey:@"authorizations" withSetMutation:NSKeyValueUnionSetMutation usingObjects:changedObjects];
    [changedObjects release];


- (void)removeAuthorizationsObject:(NSManagedObject *)value 
    NSSet *changedObjects = [[NSSet alloc] initWithObjects:&value count:1];
    [self willChangeValueForKey:@"authorizations" withSetMutation:NSKeyValueMinusSetMutation usingObjects:changedObjects];
    [[self primitiveValueForKey:@"authorizations"] removeObject:value];
    [self didChangeValueForKey:@"authorizations" withSetMutation:NSKeyValueMinusSetMutation usingObjects:changedObjects];
    [changedObjects release];


- (void)addAuthorizations:(NSSet *)value     
    [self willChangeValueForKey:@"authorizations" withSetMutation:NSKeyValueUnionSetMutation usingObjects:value];
    [[self primitiveValueForKey:@"authorizations"] unionSet:value];
    [self didChangeValueForKey:@"authorizations" withSetMutation:NSKeyValueUnionSetMutation usingObjects:value];


- (void)removeAuthorizations:(NSSet *)value 
    [self willChangeValueForKey:@"authorizations" withSetMutation:NSKeyValueMinusSetMutation usingObjects:value];
    [[self primitiveValueForKey:@"authorizations"] minusSet:value];
    [self didChangeValueForKey:@"authorizations" withSetMutation:NSKeyValueMinusSetMutation usingObjects:value];

相关链接：

Core Data methods not in header file Xcode4: Different code generated for custom core data managed objects http://developer.apple.com/library/mac/#documentation/Cocoa/Conceptual/CoreData/Articles/cdAccessorMethods.html

【参考方案1】：

是的，只要您离开@dynamic 命令，就会在运行时生成访问器。