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John Rommel Estropia
2016-04-03 19:47:25 +09:00
parent ab3095f078
commit dccc958ef1
54 changed files with 333 additions and 64 deletions
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15
Sources/Migrating/MigrationChain.swift
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@@ -62,6 +62,9 @@ import CoreData
*/
public struct MigrationChain: NilLiteralConvertible, StringLiteralConvertible, DictionaryLiteralConvertible, ArrayLiteralConvertible {
/**
Initializes the `MigrationChain` with empty values, which instructs the `DataStack` to use the .xcdatamodel's current version as the final version, and to disable progressive migrations.
*/
public init() {
self.versionTree = [:]
@@ -70,6 +73,9 @@ public struct MigrationChain: NilLiteralConvertible, StringLiteralConvertible, D
self.valid = true
}
/**
Initializes the `MigrationChain` with a single model version, which instructs the `DataStack` to use the the specified version as the final version, and to disable progressive migrations.
*/
public init(_ value: String) {
self.versionTree = [:]
@@ -78,6 +84,9 @@ public struct MigrationChain: NilLiteralConvertible, StringLiteralConvertible, D
self.valid = true
}
/**
Initializes the `MigrationChain` with a linear order of versions, which becomes the order of the `DataStack`'s progressive migrations.
*/
public init<T: CollectionType where T.Generator.Element == String, T.Index: BidirectionalIndexType>(_ elements: T) {
CoreStore.assert(Set(elements).count == Array(elements).count, "\(typeName(MigrationChain))'s migration chain could not be created due to duplicate version strings.")
@@ -101,6 +110,9 @@ public struct MigrationChain: NilLiteralConvertible, StringLiteralConvertible, D
self.valid = valid
}
/**
Initializes the `MigrationChain` with a version tree, which becomes the order of the `DataStack`'s progressive migrations.
*/
public init(_ elements: [(String, String)]) {
var valid = true
@@ -147,6 +159,9 @@ public struct MigrationChain: NilLiteralConvertible, StringLiteralConvertible, D
self.valid = valid && Set(versionTree.keys).union(versionTree.values).filter { isVersionAmbiguous($0) }.count <= 0
}
/**
Initializes the `MigrationChain` with a version tree, which becomes the order of the `DataStack`'s progressive migrations.
*/
public init(_ dictionary: [String: String]) {
self.init(dictionary.map { $0 })