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 package org.apache.hadoop.hbase.client;
20
21 import java.util.ArrayList;
22 import java.util.List;
23 import java.util.Map;
24 import java.util.Set;
25 import java.util.TreeMap;
26
27 import org.apache.hadoop.hbase.classification.InterfaceAudience;
28 import org.apache.hadoop.hbase.HConstants;
29 import org.apache.hadoop.hbase.util.Bytes;
30
31 /**
32 * Container for Actions (i.e. Get, Delete, or Put), which are grouped by
33 * regionName. Intended to be used with HConnectionManager.processBatch()
34 */
35 @InterfaceAudience.Private
36 public final class MultiAction<R> {
37 // TODO: This class should not be visible outside of the client package.
38
39 // map of regions to lists of puts/gets/deletes for that region.
40 public Map<byte[], List<Action<R>>> actions =
41 new TreeMap<byte[], List<Action<R>>>(Bytes.BYTES_COMPARATOR);
42
43 private long nonceGroup = HConstants.NO_NONCE;
44
45 public MultiAction() {
46 super();
47 }
48
49 /**
50 * Get the total number of Actions
51 *
52 * @return total number of Actions for all groups in this container.
53 */
54 public int size() {
55 int size = 0;
56 for (List<?> l : actions.values()) {
57 size += l.size();
58 }
59 return size;
60 }
61
62 /**
63 * Add an Action to this container based on it's regionName. If the regionName
64 * is wrong, the initial execution will fail, but will be automatically
65 * retried after looking up the correct region.
66 *
67 * @param regionName
68 * @param a
69 */
70 public void add(byte[] regionName, Action<R> a) {
71 List<Action<R>> rsActions = actions.get(regionName);
72 if (rsActions == null) {
73 rsActions = new ArrayList<Action<R>>();
74 actions.put(regionName, rsActions);
75 }
76 rsActions.add(a);
77 }
78
79 public void setNonceGroup(long nonceGroup) {
80 this.nonceGroup = nonceGroup;
81 }
82
83 public Set<byte[]> getRegions() {
84 return actions.keySet();
85 }
86
87 /**
88 * @return All actions from all regions in this container
89 */
90 public List<Action<R>> allActions() {
91 List<Action<R>> res = new ArrayList<Action<R>>();
92 for (List<Action<R>> lst : actions.values()) {
93 res.addAll(lst);
94 }
95 return res;
96 }
97
98 public boolean hasNonceGroup() {
99 return nonceGroup != HConstants.NO_NONCE;
100 }
101
102 public long getNonceGroup() {
103 return this.nonceGroup;
104 }
105 }