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added shorthand vars for inspecting MigrationType values. updated readme

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John Rommel Estropia
2015-07-26 17:04:19 +09:00
parent 9676e3aca2
commit 0c8a43c3b0
6 changed files with 204 additions and 77 deletions
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77
CoreStore/Migrating/MigrationResult.swift
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@@ -2,7 +2,7 @@
// MigrationResult.swift
// CoreStore
//
// Copyright (c) 2014 John Rommel Estropia
// Copyright (c) 2015 John Rommel Estropia
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
@@ -26,81 +26,6 @@
import Foundation
// MARK: - MigrationType
/**
The `MigrationType` specifies the type of migration required for a store.
*/
public enum MigrationType: BooleanType {
// MARK: Public
/**
Indicates that the persistent store matches the latest model version and no migration is needed
*/
case None(version: String)
/**
Indicates that the persistent store does not match the latest model version but Core Data can infer the mapping model, so a lightweight migration is needed
*/
case Lightweight(sourceVersion: String, destinationVersion: String)
/**
Indicates that the persistent store does not match the latest model version and Core Data could not infer a mapping model, so a custom migration is needed
*/
case Heavyweight(sourceVersion: String, destinationVersion: String)
/**
Returns the source model version for the migration type. If no migration is required, `sourceVersion` will be equal to the `destinationVersion`.
*/
public var sourceVersion: String {
switch self {
case .None(let version):
return version
case .Lightweight(let sourceVersion, _):
return sourceVersion
case .Heavyweight(let sourceVersion, _):
return sourceVersion
}
}
/**
Returns the destination model version for the migration type. If no migration is required, `destinationVersion` will be equal to the `sourceVersion`.
*/
public var destinationVersion: String {
switch self {
case .None(let version):
return version
case .Lightweight(_, let destinationVersion):
return destinationVersion
case .Heavyweight(_, let destinationVersion):
return destinationVersion
}
}
// MARK: BooleanType
public var boolValue: Bool {
switch self {
case .None: return false
case .Lightweight: return true
case .Heavyweight: return true
}
}
}
// MARK: - MigrationResult
/**