ceph/src/rocksdb/java/src/main/java/org/rocksdb/OperationType.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 type used to refer to a thread operation.
  10  *
  11  * A thread operation describes high-level action of a thread,
  12  * examples include compaction and flush.
  13  */
  14 public enum OperationType {
  15   OP_UNKNOWN((byte)0x0),
  16   OP_COMPACTION((byte)0x1),
  17   OP_FLUSH((byte)0x2);
  18
  19   private final byte value;
  20
  21   OperationType(final byte value) {
  22     this.value = value;
  23   }
  24
  25   /**
  26    * Get the internal representation value.
  27    *
  28    * @return the internal representation value.
  29    */
  30   byte getValue() {
  31     return value;
  32   }
  33
  34   /**
  35    * Get the Operation type from the internal representation value.
  36    *
  37    * @param value the internal representation value.
  38    *
  39    * @return the operation type
  40    *
  41    * @throws IllegalArgumentException if the value does not match
  42    *     an OperationType
  43    */
  44   static OperationType fromValue(final byte value)
  45       throws IllegalArgumentException {
  46     for (final OperationType threadType : OperationType.values()) {
  47       if (threadType.value == value) {
  48         return threadType;
  49       }
  50     }
  51     throw new IllegalArgumentException(
  52         "Unknown value for OperationType: " + value);
  53   }
  54 }