1 /*
2 *
3 * Licensed to the Apache Software Foundation (ASF) under one
4 * or more contributor license agreements. See the NOTICE file
5 * distributed with this work for additional information
6 * regarding copyright ownership. The ASF licenses this file
7 * to you under the Apache License, Version 2.0 (the
8 * "License"); you may not use this file except in compliance
9 * with the License. You may obtain a copy of the License at
10 *
11 * http://www.apache.org/licenses/LICENSE-2.0
12 *
13 * Unless required by applicable law or agreed to in writing, software
14 * distributed under the License is distributed on an "AS IS" BASIS,
15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16 * See the License for the specific language governing permissions and
17 * limitations under the License.
18 */
19
20 package org.apache.hadoop.hbase.client;
21
22 import org.apache.hadoop.classification.InterfaceAudience;
23 import org.apache.hadoop.classification.InterfaceStability;
24 import org.apache.hadoop.hbase.util.Bytes;
25 import org.apache.hadoop.hbase.util.Pair;
26
27 import java.util.ArrayList;
28 import java.util.Collection;
29 import java.util.List;
30 import java.util.Map;
31 import java.util.TreeMap;
32
33 /**
34 * A container for Result objects, grouped by regionName.
35 */
36 @InterfaceAudience.Public
37 @InterfaceStability.Evolving
38 public class MultiResponse {
39
40 // map of regionName to list of (Results paired to the original index for that
41 // Result)
42 private Map<byte[], List<Pair<Integer, Object>>> results =
43 new TreeMap<byte[], List<Pair<Integer, Object>>>(Bytes.BYTES_COMPARATOR);
44
45 public MultiResponse() {
46 super();
47 }
48
49 /**
50 * @return Number of pairs in this container
51 */
52 public int size() {
53 int size = 0;
54 for (Collection<?> c : results.values()) {
55 size += c.size();
56 }
57 return size;
58 }
59
60 /**
61 * Add the pair to the container, grouped by the regionName
62 *
63 * @param regionName
64 * @param r
65 * First item in the pair is the original index of the Action
66 * (request). Second item is the Result. Result will be empty for
67 * successful Put and Delete actions.
68 */
69 public void add(byte[] regionName, Pair<Integer, Object> r) {
70 List<Pair<Integer, Object>> rs = results.get(regionName);
71 if (rs == null) {
72 rs = new ArrayList<Pair<Integer, Object>>();
73 results.put(regionName, rs);
74 }
75 rs.add(r);
76 }
77
78 public void add(byte []regionName, int originalIndex, Object resOrEx) {
79 add(regionName, new Pair<Integer,Object>(originalIndex, resOrEx));
80 }
81
82 public Map<byte[], List<Pair<Integer, Object>>> getResults() {
83 return results;
84 }
85 }