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| <pre><span class="source-line-no">001</span><span id="line-1">/*</span> |
| <span class="source-line-no">002</span><span id="line-2"> * Licensed to the Apache Software Foundation (ASF) under one</span> |
| <span class="source-line-no">003</span><span id="line-3"> * or more contributor license agreements. See the NOTICE file</span> |
| <span class="source-line-no">004</span><span id="line-4"> * distributed with this work for additional information</span> |
| <span class="source-line-no">005</span><span id="line-5"> * regarding copyright ownership. The ASF licenses this file</span> |
| <span class="source-line-no">006</span><span id="line-6"> * to you under the Apache License, Version 2.0 (the</span> |
| <span class="source-line-no">007</span><span id="line-7"> * "License"); you may not use this file except in compliance</span> |
| <span class="source-line-no">008</span><span id="line-8"> * with the License. You may obtain a copy of the License at</span> |
| <span class="source-line-no">009</span><span id="line-9"> *</span> |
| <span class="source-line-no">010</span><span id="line-10"> * http://www.apache.org/licenses/LICENSE-2.0</span> |
| <span class="source-line-no">011</span><span id="line-11"> *</span> |
| <span class="source-line-no">012</span><span id="line-12"> * Unless required by applicable law or agreed to in writing, software</span> |
| <span class="source-line-no">013</span><span id="line-13"> * distributed under the License is distributed on an "AS IS" BASIS,</span> |
| <span class="source-line-no">014</span><span id="line-14"> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</span> |
| <span class="source-line-no">015</span><span id="line-15"> * See the License for the specific language governing permissions and</span> |
| <span class="source-line-no">016</span><span id="line-16"> * limitations under the License.</span> |
| <span class="source-line-no">017</span><span id="line-17"> */</span> |
| <span class="source-line-no">018</span><span id="line-18">package org.apache.hadoop.hbase.client;</span> |
| <span class="source-line-no">019</span><span id="line-19"></span> |
| <span class="source-line-no">020</span><span id="line-20">import java.io.IOException;</span> |
| <span class="source-line-no">021</span><span id="line-21">import java.util.ArrayList;</span> |
| <span class="source-line-no">022</span><span id="line-22">import java.util.Collections;</span> |
| <span class="source-line-no">023</span><span id="line-23">import java.util.List;</span> |
| <span class="source-line-no">024</span><span id="line-24">import org.apache.hadoop.hbase.util.Bytes;</span> |
| <span class="source-line-no">025</span><span id="line-25">import org.apache.yetus.audience.InterfaceAudience;</span> |
| <span class="source-line-no">026</span><span id="line-26"></span> |
| <span class="source-line-no">027</span><span id="line-27">import org.apache.hbase.thirdparty.org.apache.commons.collections4.CollectionUtils;</span> |
| <span class="source-line-no">028</span><span id="line-28"></span> |
| <span class="source-line-no">029</span><span id="line-29">/**</span> |
| <span class="source-line-no">030</span><span id="line-30"> * Performs multiple mutations atomically on a single row. The mutations are performed in the order</span> |
| <span class="source-line-no">031</span><span id="line-31"> * in which they were added.</span> |
| <span class="source-line-no">032</span><span id="line-32"> * <p></span> |
| <span class="source-line-no">033</span><span id="line-33"> * We compare and equate mutations based off their row so be careful putting RowMutations into Sets</span> |
| <span class="source-line-no">034</span><span id="line-34"> * or using them as keys in Maps.</span> |
| <span class="source-line-no">035</span><span id="line-35"> */</span> |
| <span class="source-line-no">036</span><span id="line-36">@InterfaceAudience.Public</span> |
| <span class="source-line-no">037</span><span id="line-37">public class RowMutations implements Row {</span> |
| <span class="source-line-no">038</span><span id="line-38"></span> |
| <span class="source-line-no">039</span><span id="line-39"> /**</span> |
| <span class="source-line-no">040</span><span id="line-40"> * Create a {@link RowMutations} with the specified mutations.</span> |
| <span class="source-line-no">041</span><span id="line-41"> * @param mutations the mutations to send</span> |
| <span class="source-line-no">042</span><span id="line-42"> * @throws IOException if any row in mutations is different to another</span> |
| <span class="source-line-no">043</span><span id="line-43"> */</span> |
| <span class="source-line-no">044</span><span id="line-44"> public static RowMutations of(List<? extends Mutation> mutations) throws IOException {</span> |
| <span class="source-line-no">045</span><span id="line-45"> if (CollectionUtils.isEmpty(mutations)) {</span> |
| <span class="source-line-no">046</span><span id="line-46"> throw new IllegalArgumentException("Cannot instantiate a RowMutations by empty list");</span> |
| <span class="source-line-no">047</span><span id="line-47"> }</span> |
| <span class="source-line-no">048</span><span id="line-48"> return new RowMutations(mutations.get(0).getRow(), mutations.size()).add(mutations);</span> |
| <span class="source-line-no">049</span><span id="line-49"> }</span> |
| <span class="source-line-no">050</span><span id="line-50"></span> |
| <span class="source-line-no">051</span><span id="line-51"> private final List<Mutation> mutations;</span> |
| <span class="source-line-no">052</span><span id="line-52"> private final byte[] row;</span> |
| <span class="source-line-no">053</span><span id="line-53"></span> |
| <span class="source-line-no">054</span><span id="line-54"> public RowMutations(byte[] row) {</span> |
| <span class="source-line-no">055</span><span id="line-55"> this(row, -1);</span> |
| <span class="source-line-no">056</span><span id="line-56"> }</span> |
| <span class="source-line-no">057</span><span id="line-57"></span> |
| <span class="source-line-no">058</span><span id="line-58"> /**</span> |
| <span class="source-line-no">059</span><span id="line-59"> * Create an atomic mutation for the specified row.</span> |
| <span class="source-line-no">060</span><span id="line-60"> * @param row row key</span> |
| <span class="source-line-no">061</span><span id="line-61"> * @param initialCapacity the initial capacity of the RowMutations</span> |
| <span class="source-line-no">062</span><span id="line-62"> */</span> |
| <span class="source-line-no">063</span><span id="line-63"> public RowMutations(byte[] row, int initialCapacity) {</span> |
| <span class="source-line-no">064</span><span id="line-64"> this.row = Bytes.copy(Mutation.checkRow(row));</span> |
| <span class="source-line-no">065</span><span id="line-65"> if (initialCapacity <= 0) {</span> |
| <span class="source-line-no">066</span><span id="line-66"> this.mutations = new ArrayList<>();</span> |
| <span class="source-line-no">067</span><span id="line-67"> } else {</span> |
| <span class="source-line-no">068</span><span id="line-68"> this.mutations = new ArrayList<>(initialCapacity);</span> |
| <span class="source-line-no">069</span><span id="line-69"> }</span> |
| <span class="source-line-no">070</span><span id="line-70"> }</span> |
| <span class="source-line-no">071</span><span id="line-71"></span> |
| <span class="source-line-no">072</span><span id="line-72"> /**</span> |
| <span class="source-line-no">073</span><span id="line-73"> * Add a mutation</span> |
| <span class="source-line-no">074</span><span id="line-74"> * @param mutation The data to send.</span> |
| <span class="source-line-no">075</span><span id="line-75"> * @throws IOException if the row of added mutation doesn't match the original row</span> |
| <span class="source-line-no">076</span><span id="line-76"> */</span> |
| <span class="source-line-no">077</span><span id="line-77"> public RowMutations add(Mutation mutation) throws IOException {</span> |
| <span class="source-line-no">078</span><span id="line-78"> return add(Collections.singletonList(mutation));</span> |
| <span class="source-line-no">079</span><span id="line-79"> }</span> |
| <span class="source-line-no">080</span><span id="line-80"></span> |
| <span class="source-line-no">081</span><span id="line-81"> /**</span> |
| <span class="source-line-no">082</span><span id="line-82"> * Add a list of mutations</span> |
| <span class="source-line-no">083</span><span id="line-83"> * @param mutations The data to send.</span> |
| <span class="source-line-no">084</span><span id="line-84"> * @throws IOException if the row of added mutation doesn't match the original row</span> |
| <span class="source-line-no">085</span><span id="line-85"> */</span> |
| <span class="source-line-no">086</span><span id="line-86"> public RowMutations add(List<? extends Mutation> mutations) throws IOException {</span> |
| <span class="source-line-no">087</span><span id="line-87"> for (Mutation mutation : mutations) {</span> |
| <span class="source-line-no">088</span><span id="line-88"> if (!Bytes.equals(row, mutation.getRow())) {</span> |
| <span class="source-line-no">089</span><span id="line-89"> throw new WrongRowIOException(</span> |
| <span class="source-line-no">090</span><span id="line-90"> "The row in the recently added Mutation <" + Bytes.toStringBinary(mutation.getRow())</span> |
| <span class="source-line-no">091</span><span id="line-91"> + "> doesn't match the original one <" + Bytes.toStringBinary(this.row) + ">");</span> |
| <span class="source-line-no">092</span><span id="line-92"> }</span> |
| <span class="source-line-no">093</span><span id="line-93"> }</span> |
| <span class="source-line-no">094</span><span id="line-94"> this.mutations.addAll(mutations);</span> |
| <span class="source-line-no">095</span><span id="line-95"> return this;</span> |
| <span class="source-line-no">096</span><span id="line-96"> }</span> |
| <span class="source-line-no">097</span><span id="line-97"></span> |
| <span class="source-line-no">098</span><span id="line-98"> @Override</span> |
| <span class="source-line-no">099</span><span id="line-99"> public byte[] getRow() {</span> |
| <span class="source-line-no">100</span><span id="line-100"> return row;</span> |
| <span class="source-line-no">101</span><span id="line-101"> }</span> |
| <span class="source-line-no">102</span><span id="line-102"></span> |
| <span class="source-line-no">103</span><span id="line-103"> /** Returns An unmodifiable list of the current mutations. */</span> |
| <span class="source-line-no">104</span><span id="line-104"> public List<Mutation> getMutations() {</span> |
| <span class="source-line-no">105</span><span id="line-105"> return Collections.unmodifiableList(mutations);</span> |
| <span class="source-line-no">106</span><span id="line-106"> }</span> |
| <span class="source-line-no">107</span><span id="line-107"></span> |
| <span class="source-line-no">108</span><span id="line-108"> public int getMaxPriority() {</span> |
| <span class="source-line-no">109</span><span id="line-109"> int maxPriority = Integer.MIN_VALUE;</span> |
| <span class="source-line-no">110</span><span id="line-110"> for (Mutation mutation : mutations) {</span> |
| <span class="source-line-no">111</span><span id="line-111"> maxPriority = Math.max(maxPriority, mutation.getPriority());</span> |
| <span class="source-line-no">112</span><span id="line-112"> }</span> |
| <span class="source-line-no">113</span><span id="line-113"> return maxPriority;</span> |
| <span class="source-line-no">114</span><span id="line-114"> }</span> |
| <span class="source-line-no">115</span><span id="line-115">}</span> |
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| </pre> |
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