Question

在将数据输入核心数据时,我的孩子们没有拿到母子身份证。这都是在我通过使用TBXML的Xml文件时产生的。 (缩略语法)

a = NSEntityDescription insertNewObjectForEntityForName:@"A"
set various a attributes
if a.Type isEqualToString:@"TypeA"
    b_set = NSMutableSet new
    for each child element of a
        b = NSEntityDescription insertNewObjectForEntityForName:@"B"
        set various b attributes
        b.a = a
        b_set addObject:b
    next
    a.bs = b_set
end
blah blah blah

如果说并做所有事情,所有东西方和所有东西方都正确保持了“公平”,除非所有东西方都对其(母方)归属无效。

难道我必须重新努力,在创造灯塔之前写字,以便他们有真正的反对。

Answer 1

Reverse relationships are updated as part of -processPendingChanges. That will get called as part of -save:. If you need to, you can call it directly. CoreData will not update the reverse relationships immediately since it s costly.

友情链接