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https://github.com/Adlai-Holler/CoreDataOperation
A fast, safe, flexible operation class for updating data stored in Core Data, written in Swift.
https://github.com/Adlai-Holler/CoreDataOperation
Last synced: about 1 month ago
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A fast, safe, flexible operation class for updating data stored in Core Data, written in Swift.
- Host: GitHub
- URL: https://github.com/Adlai-Holler/CoreDataOperation
- Owner: Adlai-Holler
- License: mit
- Created: 2015-12-04T23:28:00.000Z (about 9 years ago)
- Default Branch: master
- Last Pushed: 2016-02-11T19:08:25.000Z (almost 9 years ago)
- Last Synced: 2024-09-29T05:04:01.993Z (3 months ago)
- Language: Swift
- Size: 23.4 KB
- Stars: 4
- Watchers: 2
- Forks: 0
- Open Issues: 1
-
Metadata Files:
- Readme: README.md
- License: LICENSE
Awesome Lists containing this project
- awesome-swift-cn - CoreDataOperation - a safe, asynchronous CoreData operation class. (Libs / Data Management)
README
## CoreDataOperation
[](https://github.com/Carthage/Carthage) [](https://cocoapods.org) [](https://cocoapods.org)
CoreDataOperation is a fast, safe, flexible operation for updating your core data models. It supports the latest Swift 2.1 syntax, and does all its work in a background managed object context.
### Installation
- Using [CocoaPods](https://cocoapods.org) by adding `pod CoreDataOperation` to your Podfile
- Using [Carthage](https://github.com/Carthage/Carthage) by adding `github "Adlai-Holler/CoreDataOperation"` to your Cartfile.
### How to Use
```swift
let likeOperation = CoreDataOperation(targetContext: myContext, saveDepth: .ToPersistentStore) { context in
guard let post = Post.withID(postID, inContext: context) else {
throw Error.PostWasDeleted
}
if post.doILike {
post.doILike = false
post.likeCount -= 1
} else {
post.doILike = true
post.likeCount += 1
}
post.updatedAt = NSDate()
return post.likeCount
}
likeOperation.setCompletionBlockWithSuccess( { likeOperation, likeCount in
// Switch to main queue to update UI
dispatch_async(dispatch_get_main_queue()) {
likeCountLabel.text = String(likeCount)
}
}, failure: { likeOperation, error in
dispatch_async(dispatch_get_main_queue()) {
// Show an error.
}
})
myOperationQueue.addOperation(likeOperation)
```
### Features
- Safe. All operations are confined to a private, background context, so if you get into a bad state, none of your working contexts will be affected.
- Fully asynchronous. No threads are blocked, no two contexts are locked at the same time, and no context is locked for any longer than it absolutely must be.
- Cancelable. The operation checks if it is canceled after each step.
- Modern Swift syntax. Your operation block can throw an error, and it can return a value of any type which can be accessed after the operation is over.
- Lightweight. The body block is disposed of after executing, and the target managed object context is not retained.
- Tests! CoreDataOperation is tested like crazy.