ceph/src/rocksdb/java/src/main/java/org/rocksdb/ComparatorType.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 enum ComparatorType {
   9   JAVA_COMPARATOR((byte)0x0),
  10   JAVA_DIRECT_COMPARATOR((byte)0x1),
  11   JAVA_NATIVE_COMPARATOR_WRAPPER((byte)0x2);
  12
  13   private final byte value;
  14
  15   ComparatorType(final byte value) {
  16     this.value = value;
  17   }
  18
  19   /**
  20    * <p>Returns the byte value of the enumerations value.</p>
  21    *
  22    * @return byte representation
  23    */
  24   byte getValue() {
  25     return value;
  26   }
  27
  28   /**
  29    * <p>Get the ComparatorType enumeration value by
  30    * passing the byte identifier to this method.</p>
  31    *
  32    * @param byteIdentifier of ComparatorType.
  33    *
  34    * @return ComparatorType instance.
  35    *
  36    * @throws IllegalArgumentException if the comparator type for the byteIdentifier
  37    *     cannot be found
  38    */
  39   static ComparatorType getComparatorType(final byte byteIdentifier) {
  40     for (final ComparatorType comparatorType : ComparatorType.values()) {
  41       if (comparatorType.getValue() == byteIdentifier) {
  42         return comparatorType;
  43       }
  44     }
  45
  46     throw new IllegalArgumentException(
  47         "Illegal value provided for ComparatorType.");
  48   }
  49 }