Aerospike Int Long Spec: Aerospikeのjava clientで値の範囲によって自動的に型が変更される仕様の確認

gistfile1.scala

import com.aerospike.client.policy.ClientPolicy
import com.aerospike.client.{AerospikeClient, Bin, Key}

object AerospikeIntLongSpec extends App {

  val policy = new ClientPolicy
  policy.user = ""; policy.password = ""
  val client = new AerospikeClient(policy, "127.0.0.1", 3000)

  val (keyName, binName) = ("budget", "spend")
  val key = new Key("test", "budgetSet", keyName)

  def getTypeAndValue(value: AnyVal) = value match {
    case i: Int  => s"$i: Int"
    case i: Long => s"$i: Long"
  }

  client.delete(null, key)

  println("Int.MaxValue: " + Int.MaxValue)

  client.put(null, key, new Bin(binName, Int.MaxValue - 1))
  val r1 = client.get(null, key).getValue(binName).asInstanceOf[AnyVal]
  println("r1: " + getTypeAndValue(r1))

  client.add(null, key, new Bin(binName, 1))
  val r2 = client.get(null, key).getValue(binName).asInstanceOf[AnyVal]
  println("r2: " + getTypeAndValue(r2))

  client.add(null, key, new Bin(binName, 1))
  val r3 = client.get(null, key).getValue(binName).asInstanceOf[AnyVal]
  println("r3: " + getTypeAndValue(r3))

  client.add(null, key, new Bin(binName, -1))
  val r4 = client.get(null, key).getValue(binName).asInstanceOf[AnyVal]
  println("r3: " + getTypeAndValue(r4))

}

result

Int.MaxValue: 2147483647
r1: 2147483646: Int
r2: 2147483647: Int
r3: 2147483648: Long
r3: 2147483647: Int

When setting a value in Java, the Aerospike library automatically determine the best Aerospike native type for storage. Integers and Longs are converted into an internal number format, and Strings are converted to UTF-8. Byte arrays are stored as blobs.

Supported Data Types | Java Client Manual | Aerospike