Instance Property

versionHash

The version hash for the receiver.

Declaration

@property(readonly, copy) NSData *versionHash;

Discussion

The version hash is used to uniquely identify a property based on its configuration. The version hash uses only values which affect the persistence of data and the user-defined versionHashModifier value. (The values which affect persistence are the name of the property, and the flags for isOptional, isTransient, and isReadOnly.) This value is stored as part of the version information in the metadata for stores, as well as a definition of a property involved in an NSPropertyMapping object.

See Also

Supporting Versioning

versionHashModifier

The version hash modifier for the receiver.

renamingIdentifier

The renaming identifier for the receiver.