243 lines
8.3 KiB
Markdown
243 lines
8.3 KiB
Markdown
# SQLite.swift
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[![Build Status][Badge]][Travis] [](http://cocoadocs.org/docsets/SQLite.swift) [](https://developer.apple.com/swift/) [](http://cocoadocs.org/docsets/SQLite.swift) [](https://github.com/Carthage/Carthage) [](https://gitter.im/stephencelis/SQLite.swift)
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A type-safe, [Swift][]-language layer over [SQLite3][].
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[SQLite.swift][] provides compile-time confidence in SQL statement
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syntax _and_ intent.
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[Badge]: https://img.shields.io/travis/stephencelis/SQLite.swift/master.svg?style=flat
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[Travis]: https://travis-ci.org/stephencelis/SQLite.swift
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[Swift]: https://developer.apple.com/swift/
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[SQLite3]: http://www.sqlite.org
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[SQLite.swift]: https://github.com/stephencelis/SQLite.swift
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## Features
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- A pure-Swift interface
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- A type-safe, optional-aware SQL expression builder
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- A flexible, chainable, lazy-executing query layer
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- Automatically-typed data access
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- A lightweight, uncomplicated query and parameter binding interface
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- Developer-friendly error handling and debugging
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- [Full-text search][] support
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- [Well-documented][See Documentation]
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- Extensively tested
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- Companion project has [SQLCipher support](https://github.com/stephencelis/SQLiteCipher.swift)
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- Active support at [StackOverflow](http://stackoverflow.com/questions/tagged/sqlite.swift), and [Gitter Chat Room](https://gitter.im/stephencelis/SQLite.swift) (_experimental_)
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[Full-text search]: Documentation/Index.md#full-text-search
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[See Documentation]: Documentation/Index.md#sqliteswift-documentation
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## Usage
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``` swift
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import SQLite
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let db = try Connection("path/to/db.sqlite3")
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let users = Table("users")
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let id = Expression<Int64>("id")
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let name = Expression<String?>("name")
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let email = Expression<String>("email")
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try db.run(users.create { t in
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t.column(id, primaryKey: true)
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t.column(name)
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t.column(email, unique: true)
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})
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// CREATE TABLE "users" (
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// "id" INTEGER PRIMARY KEY NOT NULL,
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// "name" TEXT,
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// "email" TEXT NOT NULL UNIQUE
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// )
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let insert = users.insert(name <- "Alice", email <- "alice@mac.com")
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let rowid = try db.run(insert)
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// INSERT INTO "users" ("name", "email") VALUES ('Alice', 'alice@mac.com')
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for user in try db.prepare(users) {
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print("id: \(user[id]), name: \(user[name]), email: \(user[email])")
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// id: 1, name: Optional("Alice"), email: alice@mac.com
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}
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// SELECT * FROM "users"
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let alice = users.filter(id == rowid)
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try db.run(alice.update(email <- email.replace("mac.com", with: "me.com")))
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// UPDATE "users" SET "email" = replace("email", 'mac.com', 'me.com')
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// WHERE ("id" = 1)
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try db.run(alice.delete())
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// DELETE FROM "users" WHERE ("id" = 1)
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db.scalar(users.count) // 0
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// SELECT count(*) FROM "users"
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```
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SQLite.swift also works as a lightweight, Swift-friendly wrapper over the C
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API.
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``` swift
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let stmt = try db.prepare("INSERT INTO users (email) VALUES (?)")
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for email in ["betty@icloud.com", "cathy@icloud.com"] {
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try stmt.run(email)
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}
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db.totalChanges // 3
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db.changes // 1
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db.lastInsertRowid // 3
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for row in try db.prepare("SELECT id, email FROM users") {
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print("id: \(row[0]), email: \(row[1])")
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// id: Optional(2), email: Optional("betty@icloud.com")
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// id: Optional(3), email: Optional("cathy@icloud.com")
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}
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db.scalar("SELECT count(*) FROM users") // 2
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```
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[Read the documentation][See Documentation] or explore more,
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interactively, from the Xcode project’s playground.
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For a more comprehensive example, see [this article](http://masteringswift.blogspot.com/2015/09/create-data-access-layer-with.html) and the [companion repository](https://github.com/hoffmanjon/SQLiteDataAccessLayer2/tree/master).
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## Installation
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> _Note:_ SQLite.swift requires Swift 3 (and [Xcode][] 8) or greater. If you absolutely
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> need compatibility with Swift 2.3 you can use the [swift-2.3][] branch or older
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> released versions. New development will happen exclusively on the master/Swift 3 branch.
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>
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> The following instructions apply to targets that support embedded
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> Swift frameworks. To use SQLite.swift in iOS 7 or an OS X command line
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> tool, please read the [Frameworkless Targets][] section of the
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> documentation.
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### Carthage
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[Carthage][] is a simple, decentralized dependency manager for Cocoa. To
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install SQLite.swift with Carthage:
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1. Make sure Carthage is [installed][Carthage Installation].
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2. Update your Cartfile to include the following:
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```
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github "stephencelis/SQLite.swift" ~> 0.11.0
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```
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3. Run `carthage update` and [add the appropriate framework][Carthage Usage].
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[Carthage]: https://github.com/Carthage/Carthage
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[Carthage Installation]: https://github.com/Carthage/Carthage#installing-carthage
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[Carthage Usage]: https://github.com/Carthage/Carthage#adding-frameworks-to-an-application
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### CocoaPods
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[CocoaPods][] is a dependency manager for Cocoa projects. To install
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SQLite.swift with CocoaPods:
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1. Make sure the latest CocoaPods beta is [installed][CocoaPods
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Installation]. (SQLite.swift requires version 1.0.0.beta.6 or greater.)
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``` sh
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# Using the default Ruby install will require you to use sudo when
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# installing and updating gems.
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[sudo] gem install cocoapods
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```
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2. Update your Podfile to include the following:
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``` ruby
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use_frameworks!
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pod 'SQLite.swift', '~> 0.11.0'
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```
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3. Run `pod install`.
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[CocoaPods]: https://cocoapods.org
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[CocoaPods Installation]: https://guides.cocoapods.org/using/getting-started.html#getting-started
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### Manual
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To install SQLite.swift as an Xcode sub-project:
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1. Drag the **SQLite.xcodeproj** file into your own project.
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([Submodule][], clone, or [download][] the project first.)
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2. In your target’s **General** tab, click the **+** button under **Linked
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Frameworks and Libraries**.
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3. Select the appropriate **SQLite.framework** for your platform.
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4. **Add**.
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[Frameworkless Targets]: Documentation/Index.md#frameworkless-targets
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[Xcode]: https://developer.apple.com/xcode/downloads/
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[Submodule]: http://git-scm.com/book/en/Git-Tools-Submodules
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[download]: https://github.com/stephencelis/SQLite.swift/archive/master.zip
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## Communication
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[See the planning document] for a roadmap and existing feature requests.
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[Read the contributing guidelines][]. The _TL;DR_ (but please; _R_):
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- Need **help** or have a **general question**? [Ask on Stack
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Overflow][] (tag `sqlite.swift`).
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- Found a **bug** or have a **feature request**? [Open an issue][].
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- Want to **contribute**? [Submit a pull request][].
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[See the planning document]: /Documentation/Planning.md
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[Read the contributing guidelines]: ./CONTRIBUTING.md#contributing
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[Ask on Stack Overflow]: http://stackoverflow.com/questions/tagged/sqlite.swift
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[Open an issue]: https://github.com/stephencelis/SQLite.swift/issues/new
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[Submit a pull request]: https://github.com/stephencelis/SQLite.swift/fork
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## Author
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- [Stephen Celis](mailto:stephen@stephencelis.com)
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([@stephencelis](https://twitter.com/stephencelis))
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## License
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SQLite.swift is available under the MIT license. See [the LICENSE
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file](./LICENSE.txt) for more information.
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## Related
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These projects enhance or use SQLite.swift:
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- [SQLiteCipher.swift](https://github.com/stephencelis/SQLiteCipher.swift)
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- [SQLiteMigrationManager.swift](https://github.com/garriguv/SQLiteMigrationManager.swift) (inspired by [FMDBMigrationManager](https://github.com/layerhq/FMDBMigrationManager))
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## Alternatives
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Looking for something else? Try another Swift wrapper (or [FMDB][]):
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- [Camembert](https://github.com/remirobert/Camembert)
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- [GRDB](https://github.com/groue/GRDB.swift)
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- [SQLiteDB](https://github.com/FahimF/SQLiteDB)
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- [Squeal](https://github.com/nerdyc/Squeal)
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- [SwiftData](https://github.com/ryanfowler/SwiftData)
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- [SwiftSQLite](https://github.com/chrismsimpson/SwiftSQLite)
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[FMDB]: https://github.com/ccgus/fmdb
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[swift-2.3]: https://github.com/stephencelis/SQLite.swift/tree/swift-2.3
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