ceph/src/rocksdb/java/src/main/java/org/rocksdb/Priority.java

   1 // Copyright (c) 2011-present, Facebook, Inc.  All rights reserved.
   2 //  This source code is licensed under both the GPLv2 (found in the
   3 //  COPYING file in the root directory) and Apache 2.0 License
   4 //  (found in the LICENSE.Apache file in the root directory).
   5
   6 package org.rocksdb;
   7
   8 /**
   9  * The Thread Pool priority.
  10  */
  11 public enum Priority {
  12   BOTTOM((byte) 0x0),
  13   LOW((byte) 0x1),
  14   HIGH((byte)0x2),
  15   TOTAL((byte)0x3);
  16
  17   private final byte value;
  18
  19   Priority(final byte value) {
  20     this.value = value;
  21   }
  22
  23   /**
  24    * <p>Returns the byte value of the enumerations value.</p>
  25    *
  26    * @return byte representation
  27    */
  28   byte getValue() {
  29     return value;
  30   }
  31
  32   /**
  33    * Get Priority by byte value.
  34    *
  35    * @param value byte representation of Priority.
  36    *
  37    * @return {@link org.rocksdb.Priority} instance.
  38    * @throws java.lang.IllegalArgumentException if an invalid
  39    *     value is provided.
  40    */
  41   static Priority getPriority(final byte value) {
  42     for (final Priority priority : Priority.values()) {
  43       if (priority.getValue() == value){
  44         return priority;
  45       }
  46     }
  47     throw new IllegalArgumentException("Illegal value provided for Priority.");
  48   }
  49 }