问题描述
我有一个对象的字典;它们都是应该可序列化的POCO对象。我应该看看把这些写到磁盘的什么技术。我正在寻找最简单的选项来写几个列表来保存状态。
I have a dictionary of objects; they are all POCO objects that should be serializable. What technique should I look at for writing these to disk. I'm looking for the simplest option to write a few lists to save state.
我想我有3个选项。
-
plist文件。但是，这似乎只限于存储预定义对象（字符串，数字等）而不是对象（如名字和年龄的人）。
plist files. However this seems to be limited to only storing predefined objects (strings, numbers etc) not objects (like a person with a name and age).
CoreData。 （新的3.0）这将工作很好;然而，我的数据模型将需要改变，使这项工作。这将是一个大量的返工，我不确定是否值得的努力。
CoreData. (New in 3.0) This would work well; however my data model would need to change to make this work. This would be a massive rework and I'm not sure if it is worth the effort.
SQLLite。实现一个简单的SQL数据库读取和读取。我已经尽了最少的努力，但我不想重写一些核心数据ORM函数。
SQLLite. Implement a simple SQL database to read to and from. I have done the least amount of reserch into this one, but I don't want to have to 'rewrite' some of the core data ORM functions.
推荐答案
这样做与在Mac OS X上的做法相同：POCOs必须符合 NSCoding 协议。有关概念参考，请参见，和为NSCoding引用。
You do this in the same way you'd do it on Mac OS X: your POCOs must conform to the NSCoding protocol. See here for a conceptual reference, and here for the NSCoding reference.
如果数据不是那么疯狂广泛，你没有可笑的复杂的对象之间的关系，写一切作为plist可能是你最好的选择;它在代码中执行和简单实现非常快。像你说的，CoreData可能是一个额外的工作来适应你的代码，并且sqlite真的只是存储数据是完美的存储在关系数据库。请记住，sqlite也比使用二进制列表更慢，使用更多的资源。
If the data isn't that crazy extensive and you don't have ridiculously complicated relationships between your objects, writing everything out as a plist is probably your best option; it's very fast to execute and simple to implement in your code. Like you said, CoreData will probably be a lot of extra work to adapt your code to, and sqlite really is only good for storing data that's perfect to be stored in a relational database. Keep in mind that sqlite is also slower and uses more resources than working with binary plists.
这篇关于如何在iPhone sdk中序列化一个简单的对象？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！