1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one
3 * or more contributor license agreements. See the NOTICE file
4 * distributed with this work for additional information
5 * regarding copyright ownership. The ASF licenses this file
6 * to you under the Apache License, Version 2.0 (the
7 * "License"); you may not use this file except in compliance
8 * with the License. You may obtain a copy of the License at
9 *
10 * http://www.apache.org/licenses/LICENSE-2.0
11 *
12 * Unless required by applicable law or agreed to in writing, software
13 * distributed under the License is distributed on an "AS IS" BASIS,
14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15 * See the License for the specific language governing permissions and
16 * limitations under the License.
17 */
18
19 package org.apache.hadoop.hbase.codec.prefixtree.encode.tokenize;
20
21 import org.apache.hadoop.hbase.classification.InterfaceAudience;
22
23
24 /**
25 * Warning: currently unused, but code is valid. Pending performance testing on more data sets.
26 *
27 * Where is the key relative to our current position in the tree. For example, the current tree node
28 * is "BEFORE" the key we are seeking
29 */
30 @InterfaceAudience.Private
31 public enum TokenizerRowSearchPosition {
32
33 AFTER,//the key is after this tree node, so keep searching
34 BEFORE,//in a binary search, this tells us to back up
35 MATCH,//the current node is a full match
36 NO_MATCH,//might as well return a value more informative than null
37
38 }