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Code Issues 95 Packages Projects Releases 10 Wiki Activity

allow nested transactions

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This commit is contained in:
John Rommel Estropia
2015-02-28 00:55:22 +09:00
parent c71198347d
commit a45c94dd52
9 changed files with 62 additions and 20 deletions
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22
HardcoreData/DataTransaction.swift
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@@ -37,10 +37,6 @@ public final class DataTransaction {
// MARK: - Public
/**
The background concurrent context managed by the transaction.
*/
public let context: NSManagedObjectContext
// MARK: Object management
@@ -129,9 +125,25 @@ public final class DataTransaction {
self.result = self.context.saveSynchronously()
}
/**
Begins a child transaction synchronously where NSManagedObject creates, updates, and deletes can be made.
:param: closure the block where creates, updates, and deletes can be made to the transaction. Transaction blocks are executed serially in a background queue, and all changes are made from a concurrent NSManagedObjectContext.
:returns: a SaveResult value indicating success or failure, or nil if the transaction was not comitted synchronously
*/
public func performTransactionAndWait(closure: (transaction: DataTransaction) -> Void) -> SaveResult? {
return DataTransaction(
mainContext: self.context,
queue: self.childTransactionQueue,
closure: closure).performAndWait()
}
// MARK: - Internal
internal let context: NSManagedObjectContext
internal init(mainContext: NSManagedObjectContext, queue: GCDQueue, closure: (transaction: DataTransaction) -> Void) {
self.transactionQueue = queue
@@ -168,4 +180,6 @@ public final class DataTransaction {
private var result: SaveResult?
private let transactionQueue: GCDQueue
private let closure: (transaction: DataTransaction) -> Void
private lazy var childTransactionQueue: GCDQueue = .createSerial("com.hardcoredata.datastack.childtransactionqueue")
}