xcdatamodel

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Core Data automatic lightweight migration - switching from unversioned to versioned data model

I am trying to perform a lightweight migration, but I am having a problem because of the way I created my initial datamodel. The initial data model was not versioned, so now the following co开发者_如何[详细]

2023-04-12 05:37 分类：问答
xcdatamodel Contents Disappears

I\'ve had this happen a few times. The contents of proj.xcdatamodeld/proj.xcdatamodel/ randomly disappear off my hard drive. However, Xcode will open the model file just fine.[详细]

2023-04-09 09:08 分类：问答
Compatibility problem with .xcdatamodeld between Xcode 4.1 (Lion) and Xcode 3.2.5 (snow leopard)

I have a problem with a Data Model using Core Data. 1/ I\'ve created a data model on xcode 4.1 (on lion) with my entities and their relationships. In the inspector on the right i\'ve checked \"Tools[详细]

2023-03-26 00:34 分类：问答
Can I still use xcdatamodel core data model relationships with Restkit?

As I understand it RestKit provides integration with Apple’s Core Data framework, making and populating Core Data associations for you, allowing natural property based traversal of your data model.[详细]

2023-03-21 00:52 分类：问答
Core Data Not Saving Relationships Between Objects

I have a project that uses the same xcdatamodel file as another project. In fact it\'s the exact same file. I copied it from one project to the other. I also copied the object files over with a few mo[详细]

2023-03-14 22:31 分类：问答
Is there a mechanism to detect a design change in the datamodel for an iPad application?

I am building a new application and fully expect the datamodel to change in the future.I was wondering if t开发者_开发知识库he existing constructs have a versioning attribute that can be used for dete[详细]

2023-03-14 11:42 分类：问答
iphone coredata xcdatamodel versioning...is their a limit to versions?

I am going through my 8th version of the iphone d开发者_JAVA百科atamodel, and this is over the span of months, so improvements come along and changes have to be made. I was wondering if there is a lim[详细]

2023-03-12 12:15 分类：问答
xcdatamodel corrupted

I am st开发者_如何学Cuck with xcdatamodel being corrupted. I am a newbie and have no clue what to do hereon. Can supply the file which is being questioned alongwith the sqlite db as well...[详细]

2023-03-05 05:29 分类：问答
How to Add an existing xcDatamodel file to Object

I already have an existing xcdatamodel file. So I create a new project with core data. Now I want to replace the xcdatamodel file provided by the xcode with xcdatamodel file that I had.[详细]

2023-02-24 07:45 分类：问答
Programmatically create attribute - Core Data

i have a simple iphone project which contains a simple xcdatamodel that has a single entity with roughly 3 attributes..[详细]

2023-02-22 09:24 分类：问答