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Code Issues 95 Packages Projects Releases 10 Wiki Activity

WIP: allow migrations for CoreStoreObjects

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John Estropia
2017-04-11 19:13:35 +09:00
parent e5ef4992d3
commit 9f3db61ff7
27 changed files with 1146 additions and 691 deletions
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22
Sources/Migrating/MigrationChain.swift
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@@ -70,7 +70,7 @@ public struct MigrationChain: ExpressibleByNilLiteral, ExpressibleByStringLitera
self.versionTree = [:]
self.rootVersions = []
self.leafVersions = []
self.valid = true
self.isValid = true
}
/**
@@ -81,7 +81,7 @@ public struct MigrationChain: ExpressibleByNilLiteral, ExpressibleByStringLitera
self.versionTree = [:]
self.rootVersions = [value]
self.leafVersions = [value]
self.valid = true
self.isValid = true
}
/**
@@ -93,13 +93,13 @@ public struct MigrationChain: ExpressibleByNilLiteral, ExpressibleByStringLitera
var lastVersion: String?
var versionTree = [String: String]()
var valid = true
var isValid = true
for version in elements {
if let lastVersion = lastVersion,
let _ = versionTree.updateValue(version, forKey: lastVersion) {
valid = false
isValid = false
}
lastVersion = version
}
@@ -107,7 +107,7 @@ public struct MigrationChain: ExpressibleByNilLiteral, ExpressibleByStringLitera
self.versionTree = versionTree
self.rootVersions = Set(elements.prefix(1))
self.leafVersions = Set(elements.suffix(1))
self.valid = valid
self.isValid = isValid
}
/**
@@ -115,7 +115,7 @@ public struct MigrationChain: ExpressibleByNilLiteral, ExpressibleByStringLitera
*/
public init(_ elements: [(String, String)]) {
var valid = true
var isValid = true
var versionTree = [String: String]()
elements.forEach { (sourceVersion, destinationVersion) in
@@ -126,7 +126,7 @@ public struct MigrationChain: ExpressibleByNilLiteral, ExpressibleByStringLitera
CoreStore.assert(false, "\(cs_typeName(MigrationChain.self))'s migration chain could not be created due to ambiguous version paths.")
valid = false
isValid = false
}
let leafVersions = Set(
elements
@@ -156,7 +156,7 @@ public struct MigrationChain: ExpressibleByNilLiteral, ExpressibleByStringLitera
self.versionTree = versionTree
self.rootVersions = Set(versionTree.keys).subtracting(versionTree.values)
self.leafVersions = leafVersions
self.valid = valid && Set(versionTree.keys).union(versionTree.values).filter { isVersionAmbiguous($0) }.count <= 0
self.isValid = isValid && Set(versionTree.keys).union(versionTree.values).filter { isVersionAmbiguous($0) }.count <= 0
}
/**
@@ -223,7 +223,7 @@ public struct MigrationChain: ExpressibleByNilLiteral, ExpressibleByStringLitera
return lhs.versionTree == rhs.versionTree
&& lhs.rootVersions == rhs.rootVersions
&& lhs.leafVersions == rhs.leafVersions
&& lhs.valid == rhs.valid
&& lhs.isValid == rhs.isValid
}
@@ -231,9 +231,9 @@ public struct MigrationChain: ExpressibleByNilLiteral, ExpressibleByStringLitera
internal let rootVersions: Set<String>
internal let leafVersions: Set<String>
internal let valid: Bool
internal let isValid: Bool
internal var empty: Bool {
internal var isEmpty: Bool {
return self.versionTree.count <= 0
}