scala-common

Common Scala Library: JSON, ORM and WebServer (MVC, Rest)

libraryDependencies += "com.igumnov.scala" % "scala-common_2.11" % "0.5"

JSON usage

// File: SampleEntity.scala
import com.igumnov.scala.JSON
import com.igumnov.scala.JSON._
class SampleEntity extends JSON [SampleEntity]{
  var name: String = _
  var value: Int = _
}
object SampleEntity extends SampleEntity

// File: usage.scala
import com.igumnov.scala._
val jsonString = """{ "name": "JSON source", "value": 1 }"""
val myObject = SampleEntity.fromJson(jsonString)
val myObject2 = new SampleEntity()
myObject2.name="Some name"
myObject2.value=100
val jsonString2 = myObject2.toJson
val jsonStringArray =  toJson(Array(myObject,myObject2))
val exampleArray = fromJson[Array[SampleEntity]](jsonStringArray)

WebServer usage

import com.igumnov.scala.WebServer._
import com.igumnov.scala.webserver.User

setPoolSize(1, 20)
init("localhost", 8888)
https("localhost", 8889, "src/test/resources/key.jks", "storepwd", "keypwd")

loginService((name) => {
  if (name == "admin") {
    Option(new User("admin", "CRYPT:adpexzg3FUZAk", Option(Array[String]("user"))))
  } else {
    Option(null)
  }
})

securityPages("/login", "/login", "/logout")

addStringController("/login", (rq, rs) => {
  "<form method='POST' action='/j_security_check'>" + "<input type='text' name='j_username'/>" +
    "<input type='password' name='j_password'/>" + "<input type='submit' value='Login'/></form>"
})


addRestController[SampleEntity]("/rest", (rq, rs, obj) => {
  rq.getMethod match {
    case "GET" => {
      val ret = new SampleEntity()
      ret.name = "test"
      ret.value = 1
      ret
    }
    case "POST" => {
      obj.get
    }
  }
})


addRestErrorHandler((rq: HttpServletRequest, rs: HttpServletResponse, e: Exception) => {
  val ret = new ErrorEntity()
  ret.message = e.getMessage
  ret
})

val langs = Map[String, String]("ru" -> "tmp/locale_ru.properties",
  "en" -> "tmp/locale_en.properties")

locale(langs, (rq,rs)=>{
  "en"
})

templates("pages",0)

start

ORM usage

// ObjectDTO.scala
import com.igumnov.scala.orm.Id
class ObjectDTO {
    @Id(autoIncremental = true)
    var id:Long = _
    var name:String = _
    var salary: Int = _
}


// ORMTest.scala
import com.igumnov.scala.ORM._
import com.igumnov.scala._


ORM.connectionPool("org.h2.Driver", "jdbc:h2:mem:test", "SA", "", 10, 30)
FileOps.writeString("CREATE TABLE ObjectDTO (id BIGINT AUTO_INCREMENT PRIMARY KEY)\n", "tmp/sql_folder/1.sql")
FileOps.appendLine("ALTER TABLE ObjectDTO ADD name VARCHAR(255)", "tmp/sql_folder/1.sql")
ORM.applyDDL("tmp/sql_folder")

FileOps.writeString("ALTER TABLE ObjectDTO ADD salary INT", "tmp/sql_folder/2.sql")
ORM.applyDDL("tmp/sql_folder")

transaction {
  var obj = new ObjectDTO()
  obj.name = "aaa"
  obj = insert[ObjectDTO](obj)
  val ret = findOne[ObjectDTO](obj.id)

  obj.name="b"
  update[ObjectDTO](obj)

  val retList = findAll[ObjectDTO]
  val retList2 = findBy[ObjectDTO]("name=?","b")
  delete(obj)
}