Scala 数据库访问库 Scala Slick

码农软件 · 软件分类 · ORM/持久层框架 · 2019-09-24 20:11:36

软件介绍

Slick 是 TypeSafe 推出的 Scala 数据库访问库。开发者可以使用 Scala 语言风格来编写数据查询,而不是用 SQL,示例代码:

object Coffees extends Table[(String, Int, Double)]("COFFEES") {
  def name = column[String]("COF_NAME", O.PrimaryKey)
  def supID = column[Int]("SUP_ID")
  def price = column[Double]("PRICE")
  def * = name ~ supID ~ price
}
Coffees.insertAll(
  ("Colombian", 101, 7.99),
  ("Colombian_Decaf", 101, 8.99),
  ("French_Roast_Decaf", 49, 9.99)
) 
val q = for {
  c <- Coffees if c.supID === 101
  // ^ comparing Rep[Int] to Rep[Int]!
} yield (c.name, c.price)

println(q.selectStatement)

q.foreach { case (n, p) => println(n + ": " + p) }

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