19
19

Delete article

Deleted articles cannot be recovered.

Draft of this article would be also deleted.

Are you sure you want to delete this article?

More than 5 years have passed since last update.

ScalikeJDBCを使ってMySQLにINSERTやSELECTをしたい

Last updated at Posted at 2014-10-31

MySQLに対してScalikeJDBCを使ってINSERTやSELECTのクエリーを発行する方法。

build.sbt
// scalikejdbc
libraryDependencies ++= Seq(
  "org.scalikejdbc" %% "scalikejdbc" % "2.1.2",
  "mysql" % "mysql-connector-java" % "5.1.29",
  "ch.qos.logback"    %   "logback-classic" % "1.1.1"
)
import org.scalatest._
import scalikejdbc._
import com.mysql.jdbc.Driver

case class User(id: Int, name: String, emailAddress: Option[String])

object User extends SQLSyntaxSupport[User] {
  override val tableName = "users"
  // for example 1
  def apply(rs: WrappedResultSet): User = User(rs.int("id"), rs.string("name"), rs.stringOpt("email_address"))
  // for example 2 (case classに無いカラム名を使うとコンパイル時に分かる)
  def apply(u: ResultName[User])(rs: WrappedResultSet): User = User(rs.int(u.id), rs.string(u.name), rs.stringOpt(u.emailAddress))
}

class SandboxSpec extends FunSuite {
  test("scalikejdbc") {
    Class.forName("com.mysql.jdbc.Driver")
    ConnectionPool.singleton("jdbc:mysql://192.168.0.77/testing?characterEncoding=UTF-8", "root", "mypass")

    implicit val session = AutoSession

    // insert example 1: 素のSQLに近い書き方
    val alice = User(0, "alice", None)
    val bob = User(0, "bob", Some("[email protected]"))
    sql"INSERT INTO users (name, email_address) values (${alice.name}, ${alice.emailAddress})".update.apply()
    sql"INSERT INTO users (name, email_address) values (${bob.name}, ${bob.emailAddress})".update.apply()

    // insert example 2: DSLを使った書き方 (case classに無いカラム名を使うとコンパイル時に分かる)
    val uc = User.column
    withSQL { insert.into(User).namedValues(uc.name -> "carol", uc.emailAddress -> Some("[email protected]")) }.update.apply()

    // select example 1: 素のSQLに近い書き方
    val users2 = sql"SELECT * FROM users".map(User(_)).list.apply()
    println(users2)

    // select example 2: DSLを使った書き方
    val u = User.syntax("u")
    val users = withSQL { select.from(User as u) }.map(User(u.resultName)).list.apply()
    println(users)

    // select example 3: whereで絞り込む
    val users3 = withSQL { select.from(User as u).where.eq(u.name, "bob") }.map(User(u.resultName)).list.apply()
    println(users3)
  }
}

withSQL { ... }.update.apply()applyUpdate { ... } と書くこともできるみたい。

withSQL { insert.into(User).namedValues(uc.name -> "carol", uc.emailAddress -> Some("[email protected]")) }.update.apply()

applyUpdate { insert.into(User).namedValues(uc.name -> "carol", uc.emailAddress -> Some("[email protected]")) }
19
19
1

Register as a new user and use Qiita more conveniently

  1. You get articles that match your needs
  2. You can efficiently read back useful information
  3. You can use dark theme
What you can do with signing up
19
19

Delete article

Deleted articles cannot be recovered.

Draft of this article would be also deleted.

Are you sure you want to delete this article?