是否可以编程生成核心数据结构？ [英] Is it possible to generate a Core Data structure programatically?

问题描述

我目前正在开发一个项目，可能需要能够从描述每个对象，它的属性和关系的JSON feed自动生成一个核心数据模型和类。这将使我们公司能够在每个项目开始时从我们的CRM中快速生成一个工作核心数据库。

I am currently working on a project which may require the ability to generate a Core Data model and classes automatically from a JSON feed which describes each object, it's properties and relationships. This would enable our company to quickly generate a working core data database from our CRM at the start of each project.

这是否可以/容易实现？如果是这样，有没有人有任何提示，我可以从哪里开始？
我已经创建了使用Core Data的各种iOS应用程序，但是我从来没有创建过需要自动创建Core Data模型的iOS应用程序。

Is this possible/easy to achieve? If so, does anyone have any tips on where I can get started? I have already created various iOS apps which use Core Data but I have never made one which needs to automatically create a Core Data model.

推荐答案

是的，您可以动态创建Core Data模型。可以创建 NSManagedObjectModel 而不使用存储模型， NSEntityDescription / NSAttributeDescription 实例可以在传递给 NSPersistentStoreCoordinator 之前定义和添加。 Apple有一个例子，在核心数据实用教程。

Yes, you can create a Core Data model dynamically. An NSManagedObjectModel can be created without a stored model, and NSEntityDescription/NSAttributeDescription instances can be defined and added to it before being passed to an NSPersistentStoreCoordinator. Apple has an example of doing this in their Core Data Utility Tutorial.

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