001/*
002 * Licensed to the Apache Software Foundation (ASF) under one
003 * or more contributor license agreements.  See the NOTICE file
004 * distributed with this work for additional information
005 * regarding copyright ownership.  The ASF licenses this file
006 * to you under the Apache License, Version 2.0 (the
007 * "License"); you may not use this file except in compliance
008 * with the License.  You may obtain a copy of the License at
009 *
010 *     http://www.apache.org/licenses/LICENSE-2.0
011 *
012 * Unless required by applicable law or agreed to in writing, software
013 * distributed under the License is distributed on an "AS IS" BASIS,
014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
015 * See the License for the specific language governing permissions and
016 * limitations under the License.
017 */
018package org.apache.hadoop.hbase.util;
019
020import org.apache.yetus.audience.InterfaceAudience;
021
022/**
023 * Mainly used as keys for HashMap.
024 */
025@InterfaceAudience.Private
026public final class ImmutableByteArray {
027
028  private final byte[] b;
029
030  private ImmutableByteArray(byte[] b) {
031    this.b = b;
032  }
033
034  @Override
035  public int hashCode() {
036    return Bytes.hashCode(b);
037  }
038
039  @Override
040  public boolean equals(Object obj) {
041    if (obj == null || obj.getClass() != ImmutableByteArray.class) {
042      return false;
043    }
044    return Bytes.equals(b, ((ImmutableByteArray) obj).b);
045  }
046
047  public static ImmutableByteArray wrap(byte[] b) {
048    return new ImmutableByteArray(b);
049  }
050
051  @Override
052  public String toString() {
053    return Bytes.toStringBinary(b);
054  }
055}