client-libraries/scala/src/main/scala/com/redis/Operations/KeySpaceOperations.scala

   1 package com.redis.operations
   2
   3 /**
   4  * Redis key space operations
   5  *
   6  */
   7
   8 trait KeySpaceOperations{
   9
  10   val connection: Connection
  11   var db: Int
  12
  13   // KEYS
  14   // returns all the keys matching the glob-style pattern.
  15   def keys(pattern: String): Array[String] = {
  16     connection.write("KEYS "+pattern+"\r\n")
  17     connection.readResponse.toString.split(" ")
  18   }
  19
  20   // RANDKEY
  21   // return a randomly selected key from the currently selected DB.
  22   def randomKey: String = {
  23     connection.write("RANDOMKEY\r\n")
  24     connection.readResponse.toString.split('+')(1)
  25   }
  26
  27   // RENAME (oldkey, newkey)
  28   // atomically renames the key oldkey to newkey.
  29   def rename(oldkey: String, newkey: String): Boolean = {
  30     connection.write("RENAME "+oldkey+" "+newkey+"\r\n")
  31     connection.readBoolean
  32   }
  33
  34   // RENAMENX (oldkey, newkey)
  35   // rename oldkey into newkey but fails if the destination key newkey already exists.
  36   def renamenx(oldkey: String, newkey: String): Boolean = {
  37     connection.write("RENAMENX "+oldkey+" "+newkey+"\r\n")
  38     connection.readBoolean
  39   }
  40
  41   // DBSIZE
  42   // return the size of the db.
  43   def dbSize: Int = {
  44     connection.write("DBSIZE\r\n")
  45     connection.readInt
  46   }
  47 }