| <!DOCTYPE HTML> |
| <html lang="en"> |
| <head> |
| <!-- Generated by javadoc (17) --> |
| <title>Source code</title> |
| <meta name="viewport" content="width=device-width, initial-scale=1"> |
| <meta name="description" content="source: package: org.apache.hadoop.hbase.util, class: AbstractPositionedByteRange"> |
| <meta name="generator" content="javadoc/SourceToHTMLConverter"> |
| <link rel="stylesheet" type="text/css" href="../../../../../../stylesheet.css" title="Style"> |
| </head> |
| <body class="source-page"> |
| <main role="main"> |
| <div class="source-container"> |
| <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.util;</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 org.apache.yetus.audience.InterfaceAudience;</span> |
| <span class="source-line-no">021</span><span id="line-21">import org.apache.yetus.audience.InterfaceStability;</span> |
| <span class="source-line-no">022</span><span id="line-22"></span> |
| <span class="source-line-no">023</span><span id="line-23">/**</span> |
| <span class="source-line-no">024</span><span id="line-24"> * Extends the basic {@link SimpleByteRange} implementation with position support. {@code position}</span> |
| <span class="source-line-no">025</span><span id="line-25"> * is considered transient, not fundamental to the definition of the range, and does not participate</span> |
| <span class="source-line-no">026</span><span id="line-26"> * in {@link #compareTo(ByteRange)}, {@link #hashCode()}, or {@link #equals(Object)}.</span> |
| <span class="source-line-no">027</span><span id="line-27"> * {@code Position} is retained by copy operations.</span> |
| <span class="source-line-no">028</span><span id="line-28"> */</span> |
| <span class="source-line-no">029</span><span id="line-29">@InterfaceAudience.Private</span> |
| <span class="source-line-no">030</span><span id="line-30">@InterfaceStability.Evolving</span> |
| <span class="source-line-no">031</span><span id="line-31">public abstract class AbstractPositionedByteRange extends AbstractByteRange</span> |
| <span class="source-line-no">032</span><span id="line-32"> implements PositionedByteRange {</span> |
| <span class="source-line-no">033</span><span id="line-33"> /**</span> |
| <span class="source-line-no">034</span><span id="line-34"> * The current index into the range. Like {@link java.nio.ByteBuffer} position, it points to the</span> |
| <span class="source-line-no">035</span><span id="line-35"> * next value that will be read/written in the array. It provides the appearance of being</span> |
| <span class="source-line-no">036</span><span id="line-36"> * 0-indexed, even though its value is calculated according to offset.</span> |
| <span class="source-line-no">037</span><span id="line-37"> * <p></span> |
| <span class="source-line-no">038</span><span id="line-38"> * Position is considered transient and does not participate in {@link #equals(Object)} or</span> |
| <span class="source-line-no">039</span><span id="line-39"> * {@link #hashCode()} comparisons.</span> |
| <span class="source-line-no">040</span><span id="line-40"> * </p></span> |
| <span class="source-line-no">041</span><span id="line-41"> */</span> |
| <span class="source-line-no">042</span><span id="line-42"> protected int position = 0;</span> |
| <span class="source-line-no">043</span><span id="line-43"></span> |
| <span class="source-line-no">044</span><span id="line-44"> protected int limit = 0;</span> |
| <span class="source-line-no">045</span><span id="line-45"></span> |
| <span class="source-line-no">046</span><span id="line-46"> @Override</span> |
| <span class="source-line-no">047</span><span id="line-47"> public PositionedByteRange set(int capacity) {</span> |
| <span class="source-line-no">048</span><span id="line-48"> this.position = 0;</span> |
| <span class="source-line-no">049</span><span id="line-49"> super.set(capacity);</span> |
| <span class="source-line-no">050</span><span id="line-50"> this.limit = capacity;</span> |
| <span class="source-line-no">051</span><span id="line-51"> return this;</span> |
| <span class="source-line-no">052</span><span id="line-52"> }</span> |
| <span class="source-line-no">053</span><span id="line-53"></span> |
| <span class="source-line-no">054</span><span id="line-54"> @Override</span> |
| <span class="source-line-no">055</span><span id="line-55"> public PositionedByteRange set(byte[] bytes) {</span> |
| <span class="source-line-no">056</span><span id="line-56"> this.position = 0;</span> |
| <span class="source-line-no">057</span><span id="line-57"> super.set(bytes);</span> |
| <span class="source-line-no">058</span><span id="line-58"> this.limit = bytes.length;</span> |
| <span class="source-line-no">059</span><span id="line-59"> return this;</span> |
| <span class="source-line-no">060</span><span id="line-60"> }</span> |
| <span class="source-line-no">061</span><span id="line-61"></span> |
| <span class="source-line-no">062</span><span id="line-62"> @Override</span> |
| <span class="source-line-no">063</span><span id="line-63"> public PositionedByteRange set(byte[] bytes, int offset, int length) {</span> |
| <span class="source-line-no">064</span><span id="line-64"> this.position = 0;</span> |
| <span class="source-line-no">065</span><span id="line-65"> super.set(bytes, offset, length);</span> |
| <span class="source-line-no">066</span><span id="line-66"> limit = length;</span> |
| <span class="source-line-no">067</span><span id="line-67"> return this;</span> |
| <span class="source-line-no">068</span><span id="line-68"> }</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"> * Update the beginning of this range. {@code offset + length} may not be greater than</span> |
| <span class="source-line-no">072</span><span id="line-72"> * {@code bytes.length}. Resets {@code position} to 0. the new start of this range.</span> |
| <span class="source-line-no">073</span><span id="line-73"> * @return this.</span> |
| <span class="source-line-no">074</span><span id="line-74"> */</span> |
| <span class="source-line-no">075</span><span id="line-75"> @Override</span> |
| <span class="source-line-no">076</span><span id="line-76"> public PositionedByteRange setOffset(int offset) {</span> |
| <span class="source-line-no">077</span><span id="line-77"> this.position = 0;</span> |
| <span class="source-line-no">078</span><span id="line-78"> super.setOffset(offset);</span> |
| <span class="source-line-no">079</span><span id="line-79"> return this;</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"> /**</span> |
| <span class="source-line-no">083</span><span id="line-83"> * Update the length of this range. {@code offset + length} should not be greater than</span> |
| <span class="source-line-no">084</span><span id="line-84"> * {@code bytes.length}. If {@code position} is greater than the new {@code length}, sets</span> |
| <span class="source-line-no">085</span><span id="line-85"> * {@code position} to {@code length}. The new length of this range.</span> |
| <span class="source-line-no">086</span><span id="line-86"> * @return this.</span> |
| <span class="source-line-no">087</span><span id="line-87"> */</span> |
| <span class="source-line-no">088</span><span id="line-88"> @Override</span> |
| <span class="source-line-no">089</span><span id="line-89"> public PositionedByteRange setLength(int length) {</span> |
| <span class="source-line-no">090</span><span id="line-90"> this.position = Math.min(position, length);</span> |
| <span class="source-line-no">091</span><span id="line-91"> super.setLength(length);</span> |
| <span class="source-line-no">092</span><span id="line-92"> return this;</span> |
| <span class="source-line-no">093</span><span id="line-93"> }</span> |
| <span class="source-line-no">094</span><span id="line-94"></span> |
| <span class="source-line-no">095</span><span id="line-95"> @Override</span> |
| <span class="source-line-no">096</span><span id="line-96"> public int getPosition() {</span> |
| <span class="source-line-no">097</span><span id="line-97"> return position;</span> |
| <span class="source-line-no">098</span><span id="line-98"> }</span> |
| <span class="source-line-no">099</span><span id="line-99"></span> |
| <span class="source-line-no">100</span><span id="line-100"> @Override</span> |
| <span class="source-line-no">101</span><span id="line-101"> public PositionedByteRange setPosition(int position) {</span> |
| <span class="source-line-no">102</span><span id="line-102"> this.position = position;</span> |
| <span class="source-line-no">103</span><span id="line-103"> return this;</span> |
| <span class="source-line-no">104</span><span id="line-104"> }</span> |
| <span class="source-line-no">105</span><span id="line-105"></span> |
| <span class="source-line-no">106</span><span id="line-106"> @Override</span> |
| <span class="source-line-no">107</span><span id="line-107"> public int getRemaining() {</span> |
| <span class="source-line-no">108</span><span id="line-108"> return length - position;</span> |
| <span class="source-line-no">109</span><span id="line-109"> }</span> |
| <span class="source-line-no">110</span><span id="line-110"></span> |
| <span class="source-line-no">111</span><span id="line-111"> @Override</span> |
| <span class="source-line-no">112</span><span id="line-112"> public byte peek() {</span> |
| <span class="source-line-no">113</span><span id="line-113"> return bytes[offset + position];</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> |
| <span class="source-line-no">116</span><span id="line-116"> @Override</span> |
| <span class="source-line-no">117</span><span id="line-117"> public byte get() {</span> |
| <span class="source-line-no">118</span><span id="line-118"> return get(position++);</span> |
| <span class="source-line-no">119</span><span id="line-119"> }</span> |
| <span class="source-line-no">120</span><span id="line-120"></span> |
| <span class="source-line-no">121</span><span id="line-121"> @Override</span> |
| <span class="source-line-no">122</span><span id="line-122"> public PositionedByteRange get(byte[] dst) {</span> |
| <span class="source-line-no">123</span><span id="line-123"> if (0 == dst.length) {</span> |
| <span class="source-line-no">124</span><span id="line-124"> return this;</span> |
| <span class="source-line-no">125</span><span id="line-125"> }</span> |
| <span class="source-line-no">126</span><span id="line-126"></span> |
| <span class="source-line-no">127</span><span id="line-127"> return this.get(dst, 0, dst.length); // be clear we're calling self, not super</span> |
| <span class="source-line-no">128</span><span id="line-128"> }</span> |
| <span class="source-line-no">129</span><span id="line-129"></span> |
| <span class="source-line-no">130</span><span id="line-130"> @Override</span> |
| <span class="source-line-no">131</span><span id="line-131"> public PositionedByteRange get(byte[] dst, int offset, int length) {</span> |
| <span class="source-line-no">132</span><span id="line-132"> if (0 == length) {</span> |
| <span class="source-line-no">133</span><span id="line-133"> return this;</span> |
| <span class="source-line-no">134</span><span id="line-134"> }</span> |
| <span class="source-line-no">135</span><span id="line-135"></span> |
| <span class="source-line-no">136</span><span id="line-136"> super.get(this.position, dst, offset, length);</span> |
| <span class="source-line-no">137</span><span id="line-137"> this.position += length;</span> |
| <span class="source-line-no">138</span><span id="line-138"> return this;</span> |
| <span class="source-line-no">139</span><span id="line-139"> }</span> |
| <span class="source-line-no">140</span><span id="line-140"></span> |
| <span class="source-line-no">141</span><span id="line-141"> // java boilerplate</span> |
| <span class="source-line-no">142</span><span id="line-142"></span> |
| <span class="source-line-no">143</span><span id="line-143"> @Override</span> |
| <span class="source-line-no">144</span><span id="line-144"> public PositionedByteRange get(int index, byte[] dst) {</span> |
| <span class="source-line-no">145</span><span id="line-145"> super.get(index, dst);</span> |
| <span class="source-line-no">146</span><span id="line-146"> return this;</span> |
| <span class="source-line-no">147</span><span id="line-147"> }</span> |
| <span class="source-line-no">148</span><span id="line-148"></span> |
| <span class="source-line-no">149</span><span id="line-149"> @Override</span> |
| <span class="source-line-no">150</span><span id="line-150"> public PositionedByteRange get(int index, byte[] dst, int offset, int length) {</span> |
| <span class="source-line-no">151</span><span id="line-151"> super.get(index, dst, offset, length);</span> |
| <span class="source-line-no">152</span><span id="line-152"> return this;</span> |
| <span class="source-line-no">153</span><span id="line-153"> }</span> |
| <span class="source-line-no">154</span><span id="line-154"></span> |
| <span class="source-line-no">155</span><span id="line-155"> @Override</span> |
| <span class="source-line-no">156</span><span id="line-156"> public short getShort() {</span> |
| <span class="source-line-no">157</span><span id="line-157"> short s = getShort(position);</span> |
| <span class="source-line-no">158</span><span id="line-158"> position += Bytes.SIZEOF_SHORT;</span> |
| <span class="source-line-no">159</span><span id="line-159"> return s;</span> |
| <span class="source-line-no">160</span><span id="line-160"> }</span> |
| <span class="source-line-no">161</span><span id="line-161"></span> |
| <span class="source-line-no">162</span><span id="line-162"> @Override</span> |
| <span class="source-line-no">163</span><span id="line-163"> public int getInt() {</span> |
| <span class="source-line-no">164</span><span id="line-164"> int i = getInt(position);</span> |
| <span class="source-line-no">165</span><span id="line-165"> position += Bytes.SIZEOF_INT;</span> |
| <span class="source-line-no">166</span><span id="line-166"> return i;</span> |
| <span class="source-line-no">167</span><span id="line-167"> }</span> |
| <span class="source-line-no">168</span><span id="line-168"></span> |
| <span class="source-line-no">169</span><span id="line-169"> @Override</span> |
| <span class="source-line-no">170</span><span id="line-170"> public long getLong() {</span> |
| <span class="source-line-no">171</span><span id="line-171"> long l = getLong(position);</span> |
| <span class="source-line-no">172</span><span id="line-172"> position += Bytes.SIZEOF_LONG;</span> |
| <span class="source-line-no">173</span><span id="line-173"> return l;</span> |
| <span class="source-line-no">174</span><span id="line-174"> }</span> |
| <span class="source-line-no">175</span><span id="line-175"></span> |
| <span class="source-line-no">176</span><span id="line-176"> @Override</span> |
| <span class="source-line-no">177</span><span id="line-177"> public long getVLong() {</span> |
| <span class="source-line-no">178</span><span id="line-178"> long p = getVLong(position);</span> |
| <span class="source-line-no">179</span><span id="line-179"> position += getVLongSize(p);</span> |
| <span class="source-line-no">180</span><span id="line-180"> return p;</span> |
| <span class="source-line-no">181</span><span id="line-181"> }</span> |
| <span class="source-line-no">182</span><span id="line-182"></span> |
| <span class="source-line-no">183</span><span id="line-183"> @Override</span> |
| <span class="source-line-no">184</span><span id="line-184"> public PositionedByteRange setLimit(int limit) {</span> |
| <span class="source-line-no">185</span><span id="line-185"> this.limit = limit;</span> |
| <span class="source-line-no">186</span><span id="line-186"> return this;</span> |
| <span class="source-line-no">187</span><span id="line-187"> }</span> |
| <span class="source-line-no">188</span><span id="line-188"></span> |
| <span class="source-line-no">189</span><span id="line-189"> @Override</span> |
| <span class="source-line-no">190</span><span id="line-190"> public int getLimit() {</span> |
| <span class="source-line-no">191</span><span id="line-191"> return this.limit;</span> |
| <span class="source-line-no">192</span><span id="line-192"> }</span> |
| <span class="source-line-no">193</span><span id="line-193">}</span> |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| </pre> |
| </div> |
| </main> |
| </body> |
| </html> |
