是否可以使用 Obj-C 运行时获取 NSManagedObject 的实例变量名称？

发布于 2024-12-13 21:08:31 字数 482 浏览 3 评论 0原文

我正在执行从 XML 到 NSObject 的自动映射，同时解析 XML 节点名称是否与 NSObject 实例变量名称匹配。它可以通过 obj-c 运行时轻松完成（elementName 是 XML 子节点名称）：

    void* ivarValue = nil;
    Ivar ivar = object_getInstanceVariable(self, [elementName cStringUsingEncoding:NSUTF8StringEncoding], &ivarValue);   // Get the iVar with name 'elementName' from current instance

我尝试对 NSManagedObject 执行相同操作，但没有成功。是否可以将 objc/runtime.h 与 Core Data 一起使用？如果没有，是否有替代方法来检索实例变量或其类型（假设您知道其名称）？

谢谢！

原文

I am doing an automatic mapping from XML to NSObject while parsing if the XML nodes names match the NSObject instance variable names. It's done through obj-c runtime easily with (elementName is a XML child node name):

    void* ivarValue = nil;
    Ivar ivar = object_getInstanceVariable(self, [elementName cStringUsingEncoding:NSUTF8StringEncoding], &ivarValue);   // Get the iVar with name 'elementName' from current instance

I tried to do the same with NSManagedObject with no success. Is possible to use objc/runtime.h with Core Data? If not, is there an alternative to retrieve the instance variables or its type (assuming you know its names)?

Thanks!

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