1 /**
2 * Copyright 2010 The Apache Software Foundation
3 *
4 * Licensed to the Apache Software Foundation (ASF) under one
5 * or more contributor license agreements. See the NOTICE file
6 * distributed with this work for additional information
7 * regarding copyright ownership. The ASF licenses this file
8 * to you under the Apache License, Version 2.0 (the
9 * "License"); you may not use this file except in compliance
10 * with the License. You may obtain a copy of the License at
11 *
12 * http://www.apache.org/licenses/LICENSE-2.0
13 *
14 * Unless required by applicable law or agreed to in writing, software
15 * distributed under the License is distributed on an "AS IS" BASIS,
16 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
17 * See the License for the specific language governing permissions and
18 * limitations under the License.
19 */
20 package org.apache.hadoop.hbase.filter;
21
22 import org.apache.hadoop.hbase.util.Bytes;
23 import org.apache.hadoop.io.Writable;
24
25 import java.io.DataInput;
26 import java.io.DataOutput;
27 import java.io.IOException;
28
29 /** Base class, combines Comparable<byte []> and Writable. */
30 public abstract class WritableByteArrayComparable implements Writable, Comparable<byte[]> {
31
32 byte[] value;
33
34 /**
35 * Nullary constructor, for Writable
36 */
37 public WritableByteArrayComparable() { }
38
39 /**
40 * Constructor.
41 * @param value the value to compare against
42 */
43 public WritableByteArrayComparable(byte [] value) {
44 this.value = value;
45 }
46
47 public byte[] getValue() {
48 return value;
49 }
50
51 @Override
52 public void readFields(DataInput in) throws IOException {
53 value = Bytes.readByteArray(in);
54 }
55
56 @Override
57 public void write(DataOutput out) throws IOException {
58 Bytes.writeByteArray(out, value);
59 }
60
61 @Override
62 public int compareTo(byte [] value) {
63 return Bytes.compareTo(this.value, value);
64 }
65
66 }