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 21 package org.apache.hadoop.hbase.filter; 22 23 import org.apache.hadoop.hbase.util.Bytes; 24 25 /** 26 * A comparator which compares against a specified byte array, but only compares 27 * up to the length of this byte array. For the rest it is similar to 28 * {@link BinaryComparator}. 29 */ 30 public class BinaryPrefixComparator extends WritableByteArrayComparable { 31 32 /** Nullary constructor for Writable, do not use */ 33 public BinaryPrefixComparator() { } 34 35 /** 36 * Constructor 37 * @param value value 38 */ 39 public BinaryPrefixComparator(byte[] value) { 40 super(value); 41 } 42 43 @Override 44 public int compareTo(byte [] value) { 45 if (this.value.length <= value.length) { 46 return Bytes.compareTo(this.value, 0, this.value.length, value, 0, 47 this.value.length); 48 } else { 49 return Bytes.compareTo(this.value, value); 50 } 51 } 52 53 }