这是我遇到过的最奇怪的错误，仅仅是因为我在任何地方都找不到任何关于它的信息。
背景：
我有一个使用映射到核心数据的 RestKit（当前主）的应用程序。我正在使用自定义映射提供程序（的子类RKObjectMappingProvider）。这会生成我需要的所有映射，类似于RKGithub项目。
我的一些对象具有多对多关系，因此我必须在设置其他对象之后注册一些关系（在映射提供程序中）以避免无限递归。（朋友有_many Friends has_many Friends...）
当应用程序运行并且 RestKit 自行配置时，此行（中RKManagedObjectStore.m）出现错误
_persistentStoreCoordinator = [[NSPersistentStoreCoordinator alloc] initWithManagedObjectModel:_managedObjectModel];
我无法进入“initWithManagedObjectModel：”方法。我得到的唯一信息是日志中的这个异常：
-[NSSQLToMany _setInverseManyToMany:]: unrecognized selector sent to instance 0xcc78890
我不知道是什么原因造成的，也不知道如何解决。我找不到任何有关它的文档，甚至找不到以前遇到此问题的任何人。我只能找到这个 iOS 框架的转储：
public struct NSSQLManyToMany : IEquatable<NSSQLManyToMany> {
internal NObjective.RuntimeObject Handle;
public static readonly RuntimeClass ClassHandle = CoreDataCachedClasses.NSSQLManyToMany;
public static implicit operator IntPtr( NSSQLManyToMany value ) {
return value.Handle;
}
public static implicit operator NObjective.RuntimeObject( NSSQLManyToMany value ) {
return value.Handle;
}
public override bool Equals( object value ) {
var compareTo = value as NSSQLManyToMany?;
return compareTo != null && Handle == compareTo.Value.Handle;
}
public bool Equals( NSSQLManyToMany value ) {
return Handle == value.Handle;
}
public static bool operator ==( NSSQLManyToMany value1, NSSQLManyToMany value2 ) {
return value1.Handle == value2.Handle;
}
public static bool operator !=( NSSQLManyToMany value1, NSSQLManyToMany value2 ) {
return value1.Handle != value2.Handle;
}
public NSSQLManyToMany( IntPtr value ) {
this.Handle = new RuntimeObject( value );
}
public static NSSQLManyToMany alloc() {
return new NSSQLManyToMany( ClassHandle.InvokeIntPtr( Selectors.alloc ) );
}
unsafe public NObjective.RuntimeObject inverseColumnName() {
RuntimeObject ___occuredException;
var ___result = NativeMethods.inverseColumnName( Handle, CachedSelectors.inverseColumnName, out ___occuredException, 0 );
if( ___occuredException != RuntimeObject.Null ) throw RuntimeException.Create( ___occuredException );
return new NObjective.RuntimeObject( ___result );
}
unsafe public NObjective.RuntimeObject inverseManyToMany() {
RuntimeObject ___occuredException;
var ___result = NativeMethods.inverseManyToMany( Handle, CachedSelectors.inverseManyToMany, out ___occuredException, 0 );
if( ___occuredException != RuntimeObject.Null ) throw RuntimeException.Create( ___occuredException );
return new NObjective.RuntimeObject( ___result );
}
unsafe public bool isMaster() {
RuntimeObject ___occuredException;
var ___result = NativeMethods.isMaster( Handle, CachedSelectors.isMaster, out ___occuredException, 0 );
if( ___occuredException != RuntimeObject.Null ) throw RuntimeException.Create( ___occuredException );
return ___result;
}
unsafe public bool isReflexive() {
RuntimeObject ___occuredException;
var ___result = NativeMethods.isReflexive( Handle, CachedSelectors.isReflexive, out ___occuredException, 0 );
if( ___occuredException != RuntimeObject.Null ) throw RuntimeException.Create( ___occuredException );
return ___result;
}
private static class NativeMethods {
[DllImport(Runtime.InteropLibrary, EntryPoint = "objc_msgSend_eh2")]
public static extern IntPtr inverseColumnName( RuntimeObject ___object, Selector ___selector, out RuntimeObject ___occuredException, int ___stackSize );
[DllImport(Runtime.InteropLibrary, EntryPoint = "objc_msgSend_eh2")]
public static extern IntPtr inverseManyToMany( RuntimeObject ___object, Selector ___selector, out RuntimeObject ___occuredException, int ___stackSize );
[DllImport(Runtime.InteropLibrary, EntryPoint = "objc_msgSend_eh2")]
public static extern bool isMaster( RuntimeObject ___object, Selector ___selector, out RuntimeObject ___occuredException, int ___stackSize );
[DllImport(Runtime.InteropLibrary, EntryPoint = "objc_msgSend_eh2")]
public static extern bool isReflexive( RuntimeObject ___object, Selector ___selector, out RuntimeObject ___occuredException, int ___stackSize );
}
static internal class CachedSelectors {
public static readonly Selector inverseColumnName = "inverseColumnName";
public static readonly Selector inverseManyToMany = "inverseManyToMany";
public static readonly Selector isMaster = "isMaster";
public static readonly Selector isReflexive = "isReflexive";
}
}
这很明显似乎有一个二传手：
public NSSQLManyToMany( IntPtr value ) {
this.Handle = new RuntimeObject( value );
}
有任何想法吗？
编辑：我应该补充一点，我已经尝试了所有“简单”的解决方案。从 sim 中删除应用程序不起作用。
我怀疑这可能是因为我有一个实体与同一个（不同的）实体有两个“拥有并属于许多”关系。但我不明白为什么这会是一个实际问题。