IOS NSobject 深度 child 使用 NSpredicate 过滤

Question

matsDataObject *notebook1 = [matsDataObject dataObjectWithName:@"Notebook 1" children:nil];
matsDataObject *notebook2 = [matsDataObject dataObjectWithName:@"Notebook 2" children:nil];

matsDataObject *computer1 = [matsDataObject dataObjectWithName:@"Computer 1"
                                                      children:[NSArray arrayWithObjects:notebook1, notebook2, nil]];
matsDataObject *computer2 = [matsDataObject dataObjectWithName:@"Computer 2" children:nil];
matsDataObject *computer3 = [matsDataObject dataObjectWithName:@"Computer 3" children:nil];

matsDataObject *computer = [matsDataObject dataObjectWithName:@"Computers"
                                                     children:[NSArray arrayWithObjects:computer1, computer2, computer3, nil]];

这是我的 NSobject :

计算机名称为 "Computers" 和 children "NSarray with values Computer 1, Computer 2 and Computer 3"

计算机 1 的名称为 "Computer 1" 和 children "NSarray with values Notebook 1 and Notebook 2"

通过 NSPredicate 我想在搜索 "Notebook 1"

时得到 parent object "Computers"

我尝试了什么：

NSPredicate *predicate = [NSPredicate predicateWithFormat:@"SUBQUERY(children, $child, $child.children.name CONTAINS[cd] %@).@count > 0",searchText];

和

NSPredicate *predicate = [NSPredicate predicateWithFormat:@"ANY children.children.name contains[cd] %@",searchText];

Answer 1

关闭此问题。答案来自Willeke.

NSPredicate *predicate = [NSPredicate predicateWithFormat:@"ANY children.@distinctUnionOfArrays.children.name contains[cd] %@",searchText];

IOS NSobject 深度 child 使用 NSpredicate 过滤

IOS NSobject deep child filtering with NSpredicate

objective-c

subquery

nsobject

nspredicate

ios