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https://github.com/takezoe/scala-jdbc
Better JDBC wrapper for Scala
https://github.com/takezoe/scala-jdbc
database jdbc scala sql
Last synced: 22 days ago
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Better JDBC wrapper for Scala
- Host: GitHub
- URL: https://github.com/takezoe/scala-jdbc
- Owner: takezoe
- Created: 2016-05-20T03:03:49.000Z (over 8 years ago)
- Default Branch: master
- Last Pushed: 2022-09-10T12:51:59.000Z (about 2 years ago)
- Last Synced: 2024-10-04T15:52:56.855Z (about 1 month ago)
- Topics: database, jdbc, scala, sql
- Language: Scala
- Size: 78.1 KB
- Stars: 24
- Watchers: 6
- Forks: 7
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
Awesome Lists containing this project
README
# scala-jdbc [](https://github.com/takezoe/scala-jdbc/actions) [](https://index.scala-lang.org/takezoe/scala-jdbc/scala-jdbc)
Better JDBC wrapper for Scala.
```scala
libraryDependencies += "com.github.takezoe" %% "scala-jdbc" % "1.0.5"
```
You can use better-jdbc by adding a following import statements:
```scala
import com.github.takezoe.scala.jdbc._
```
## Select
Extract values from `ResultSet`:
```scala
val users: Seq[(Int, String)] = DB.autoClose(conn) { db =>
db.select("SELECT * FROM USERS"){ rs =>
(rs.getInt("USER_ID"), rs.getString("USER_NAME"))
}
}
```
Retrieve a first record:
```scala
val user: Option[(Int, String)] = DB.autoClose(conn) { db =>
db.selectFirst(sql"SELECT * FROM USERS WHERE USER_ID = $userId"){ rs =>
(rs.getInt("USER_ID"), rs.getString("USER_NAME"))
}
}
```
Map `ResultSet` to the case class:
```scala
case class User(userId: Int, userName: String)
val users: Seq[User] = DB.autoClose(conn) { db =>
db.select("SELECT USER_ID, USER_NAME FROM USERS", User.apply _)
}
```
## Update
```scala
DB.autoClose(conn) { db =>
db.update(sql"INSERT INTO USERS (USER_ID, USER_NAME) VALUES ($userId, $userName)")
}
```
## Transaction
```scala
DB.autoClose(conn) { db =>
db.transaction {
db.update(sql"DELETE FROM GROUP WHERE USER_ID = $userId")
db.update(sql"DELETE FROM USERS WHERE USER_ID = $userId")
}
}
```
## Large data
Process large data using `scan` method:
```scala
DB.autoClose(conn) { db =>
db.scan("SELECT * FROM USERS"){ rs =>
println(rs.getString("USER_NAME"))
}
}
```