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https://github.com/SwiftKitz/Storez

💾 Safe, statically-typed, store-agnostic key-value storage written in Swift!
https://github.com/SwiftKitz/Storez

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💾 Safe, statically-typed, store-agnostic key-value storage written in Swift!

Lists

README 

        




  Storez :floppy_disk:



  Safe, statically-typed, store-agnostic key-value storage








  Version

  

    Version

  

  Swift

  Platforms




## Highlights



+ __Fully Customizable:__


Customize the persistence store, the `KeyType` class, post-commit actions .. Make this framework yours!



+ __Batteries Included__:


In case you just want to use stuff, the framework is shipped with pre-configured basic set of classes that you can just use.



+ __Portability, Check!:__


If you're looking to share code between you app and extensions, watchkit, apple watch, you're covered! You can use the `NSUserDefaults` store, just set your shared container identifier as the suite name.



**Example:**



```swift

final class WeatherService {



  private enum Keys: Namespace {

    static let id = "weather-service"

    static let temperature = Key(id: "temp", defaultValue: 0.0)

  }



  private let store: UserDefaultsStore

  

  var temperature: Double {

    return store.get(Keys.temperature)

  }



  init(store: UserDefaultsStore) {

    self.store = store

  }



  func weatherUpdate(temperature: Double) {

    store.set(Keys.temperature, temperature)

  }

}

```



## Features



__Available Stores__



| Store | Backend | Subspec |

|-------|---------|---------|

| `UserDefaultsStore` | `NSUserDefaults` | `Storez/UserDefaults` |

| `CacheStore` | `NSCache` | `Storez/Cache` |



For all stores, simply use `pod "Storez"`



__Type-safe, store-agnostic, nestable Key definitions__



```swift

// Entries must belong to a "group", for namespacing

struct Animals: Namespace {

    static let id = "animals"

}



let kingdom = Key(id: "mammals", defaultValue: nil)

kingdom.stringValue // "animals:mammals"



// Nesting

struct Cats: Namespace {

    typealias parent = Animals

    static let id = "cats"



    // Namespaces also have pre and post commit hooks

    func preCommitHook() { /* custom code */ }

    func postCommitHook() { /* custom code */ }

}



let cat = Key(id: "lion", defaultValue: nil)

cat.stringValue // "animals:cats:lion"

```



__Initialize the store you want__



```swift

// Use UserDefaultsStore for this example

let store = UserDefaultsStore(suite: "io.kitz.testing")

let key = Key(id: "key", defaultValue: nil)



// With three simple functions

store.set(key, value: 8)

store.get(key) // 8

store.clear() // Start fresh every time for testing

```



__Optionality is honored throughout__



```swift

let nullable = Key(id: "nullable", defaultValue: nil)

store.get(nullable)?.isEmpty   // nil

store.set(nullable, value: "")

store.get(nullable)?.isEmpty   // true



let nonnull = Key(id: "nonnull", defaultValue: "!")

store.get(nonnull).isEmpty  // false

store.set(nonnull, value: "")

store.get(nonnull).isEmpty  // true

```



__Custom objects easily supported__



**NEW** Simply conform to `Codable`!



_(You can still use `UserDefaultsConvirtable` if needed)_



```swift

struct CustomObject: Codable {

    var strings: [String]

}



// custom objects properly serialized/deserialized

let customObject = CustomObject(

    strings: ["fill", "in", "the"]

)



// let's add a processing block this time

let CustomValue = Key(id: "custom", defaultValue: nil) {



    var processedValue = $0

    processedValue?.strings.append("blank!")

    return processedValue

}



store.set(CustomValue, value: customObject)

store.get(CustomValue)?.strings.joinWithSeparator(" ") // fill in the blank!

```



__Make your own `KeyType`__



```swift

// For example, make an key that emits NSNotifications

struct MyKey: KeyType {



    typealias NamespaceType = G

    typealias ValueType = V



    var stringValue: String

    var defaultValue: ValueType



    func didChange(oldValue: ValueType, newValue: ValueType) {

        NSNotificationCenter.defaultCenter().postNotificationName(stringValue, object: nil)

    }

}

```



## Getting Started



### Swift Package Manager



#### You can add Storez to an Xcode project by adding it as a package dependency.



- In Xcode, from the File menu, select Add Packages...

- Enter "https://github.com/SwiftKitz/Storez" into the package repository URL text field



Depending on how your project is structured:

- If you have a single application target that needs access to the library, then add Storez directly to your application.

- If you want to use this library from multiple Xcode targets, or mixing Xcode targets and SPM targets, you likely want to create a shared framework that depends on Storez and then depend on that framework in all of your targets.



#### To use Storez in a Package.swift file, add this to the `dependencies:` section.



```swift

.package(url: "https://github.com/SwiftKitz/Storez.git", .upToNextMinor(from: "3.0.0")),

```



### CocoaPods



[CocoaPods][cocoapods-link] is fully supported. You can choose which store you want to use (see above). Simply add the following line to your [Podfile][podfile-docs]:



```ruby

pod 'Storez/UserDefaults'

```



## Motivation



I've seen a lot of great attempts at statically-types data stores, but they all build a tightly coupled design that limits the end-developer's freedom. With this framework, you can start prototyping right away with the shipped features, then replace the persistence store and `KeyType` functionality with your heart's content __and__ keep your code the way it is!



## Author



Mazyod ([@Mazyod](http://twitter.com/mazyod))



## License



Storez is released under the MIT license. See LICENSE for details.



[carthage-link]: https://github.com/Carthage/Carthage

[cartfile-docs]: https://github.com/Carthage/Carthage/blob/master/Documentation/Artifacts.md#cartfile

[cocoapods-link]: https://cocoapods.org/

[podfile-docs]: https://guides.cocoapods.org/syntax/podfile.html

[v1.0.0-link]: https://github.com/SwiftKitz/Storez/releases/tag/v1.0.0