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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;</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.nio.ByteBuffer;</span> |
| <span class="source-line-no">021</span><span id="line-21">import java.util.Comparator;</span> |
| <span class="source-line-no">022</span><span id="line-22">import org.apache.hadoop.hbase.util.ByteBufferUtils;</span> |
| <span class="source-line-no">023</span><span id="line-23">import org.apache.hadoop.hbase.util.Bytes;</span> |
| <span class="source-line-no">024</span><span id="line-24">import org.apache.yetus.audience.InterfaceAudience;</span> |
| <span class="source-line-no">025</span><span id="line-25">import org.apache.yetus.audience.InterfaceStability;</span> |
| <span class="source-line-no">026</span><span id="line-26"></span> |
| <span class="source-line-no">027</span><span id="line-27">/**</span> |
| <span class="source-line-no">028</span><span id="line-28"> * A {@link CellComparatorImpl} for <code>hbase:meta</code> catalog table {@link KeyValue}s.</span> |
| <span class="source-line-no">029</span><span id="line-29"> */</span> |
| <span class="source-line-no">030</span><span id="line-30">@InterfaceAudience.Private</span> |
| <span class="source-line-no">031</span><span id="line-31">@InterfaceStability.Evolving</span> |
| <span class="source-line-no">032</span><span id="line-32">public class MetaCellComparator extends CellComparatorImpl {</span> |
| <span class="source-line-no">033</span><span id="line-33"></span> |
| <span class="source-line-no">034</span><span id="line-34"> /**</span> |
| <span class="source-line-no">035</span><span id="line-35"> * A {@link MetaCellComparator} for <code>hbase:meta</code> catalog table {@link KeyValue}s.</span> |
| <span class="source-line-no">036</span><span id="line-36"> */</span> |
| <span class="source-line-no">037</span><span id="line-37"> public static final MetaCellComparator META_COMPARATOR = new MetaCellComparator();</span> |
| <span class="source-line-no">038</span><span id="line-38"></span> |
| <span class="source-line-no">039</span><span id="line-39"> @Override</span> |
| <span class="source-line-no">040</span><span id="line-40"> public int compareRows(final Cell left, final Cell right) {</span> |
| <span class="source-line-no">041</span><span id="line-41"> if (left instanceof ByteBufferExtendedCell) {</span> |
| <span class="source-line-no">042</span><span id="line-42"> ByteBufferExtendedCell bbLeft = (ByteBufferExtendedCell) left;</span> |
| <span class="source-line-no">043</span><span id="line-43"> if (right instanceof ByteBufferExtendedCell) {</span> |
| <span class="source-line-no">044</span><span id="line-44"> ByteBufferExtendedCell bbRight = (ByteBufferExtendedCell) right;</span> |
| <span class="source-line-no">045</span><span id="line-45"> return compareBBRows(bbLeft.getRowByteBuffer(), bbLeft.getRowPosition(),</span> |
| <span class="source-line-no">046</span><span id="line-46"> left.getRowLength(), bbRight.getRowByteBuffer(), bbRight.getRowPosition(),</span> |
| <span class="source-line-no">047</span><span id="line-47"> right.getRowLength());</span> |
| <span class="source-line-no">048</span><span id="line-48"> } else {</span> |
| <span class="source-line-no">049</span><span id="line-49"> return compareBBAndBytesRows(bbLeft.getRowByteBuffer(), bbLeft.getRowPosition(),</span> |
| <span class="source-line-no">050</span><span id="line-50"> left.getRowLength(), right.getRowArray(), right.getRowOffset(), right.getRowLength());</span> |
| <span class="source-line-no">051</span><span id="line-51"> }</span> |
| <span class="source-line-no">052</span><span id="line-52"> } else {</span> |
| <span class="source-line-no">053</span><span id="line-53"> if (right instanceof ByteBufferExtendedCell) {</span> |
| <span class="source-line-no">054</span><span id="line-54"> ByteBufferExtendedCell bbRight = (ByteBufferExtendedCell) right;</span> |
| <span class="source-line-no">055</span><span id="line-55"> return -compareBBAndBytesRows(bbRight.getRowByteBuffer(), bbRight.getRowPosition(),</span> |
| <span class="source-line-no">056</span><span id="line-56"> right.getRowLength(), left.getRowArray(), left.getRowOffset(), left.getRowLength());</span> |
| <span class="source-line-no">057</span><span id="line-57"> } else {</span> |
| <span class="source-line-no">058</span><span id="line-58"> return compareBytesRows(left.getRowArray(), left.getRowOffset(), left.getRowLength(),</span> |
| <span class="source-line-no">059</span><span id="line-59"> right.getRowArray(), right.getRowOffset(), right.getRowLength());</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"> }</span> |
| <span class="source-line-no">063</span><span id="line-63"></span> |
| <span class="source-line-no">064</span><span id="line-64"> @Override</span> |
| <span class="source-line-no">065</span><span id="line-65"> public int compareRows(Cell left, byte[] right, int roffset, int rlength) {</span> |
| <span class="source-line-no">066</span><span id="line-66"> if (left instanceof ByteBufferExtendedCell) {</span> |
| <span class="source-line-no">067</span><span id="line-67"> ByteBufferExtendedCell bbLeft = (ByteBufferExtendedCell) left;</span> |
| <span class="source-line-no">068</span><span id="line-68"> return compareBBAndBytesRows(bbLeft.getRowByteBuffer(), bbLeft.getRowPosition(),</span> |
| <span class="source-line-no">069</span><span id="line-69"> left.getRowLength(), right, roffset, rlength);</span> |
| <span class="source-line-no">070</span><span id="line-70"> } else {</span> |
| <span class="source-line-no">071</span><span id="line-71"> return compareBytesRows(left.getRowArray(), left.getRowOffset(), left.getRowLength(), right,</span> |
| <span class="source-line-no">072</span><span id="line-72"> roffset, rlength);</span> |
| <span class="source-line-no">073</span><span id="line-73"> }</span> |
| <span class="source-line-no">074</span><span id="line-74"> }</span> |
| <span class="source-line-no">075</span><span id="line-75"></span> |
| <span class="source-line-no">076</span><span id="line-76"> @Override</span> |
| <span class="source-line-no">077</span><span id="line-77"> public int compareRows(byte[] leftRow, byte[] rightRow) {</span> |
| <span class="source-line-no">078</span><span id="line-78"> return compareBytesRows(leftRow, 0, leftRow.length, rightRow, 0, rightRow.length);</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"> @Override</span> |
| <span class="source-line-no">082</span><span id="line-82"> public int compare(final Cell a, final Cell b, boolean ignoreSequenceid) {</span> |
| <span class="source-line-no">083</span><span id="line-83"> int diff = compareRows(a, b);</span> |
| <span class="source-line-no">084</span><span id="line-84"> if (diff != 0) {</span> |
| <span class="source-line-no">085</span><span id="line-85"> return diff;</span> |
| <span class="source-line-no">086</span><span id="line-86"> }</span> |
| <span class="source-line-no">087</span><span id="line-87"></span> |
| <span class="source-line-no">088</span><span id="line-88"> diff = compareWithoutRow(a, b);</span> |
| <span class="source-line-no">089</span><span id="line-89"> if (diff != 0) {</span> |
| <span class="source-line-no">090</span><span id="line-90"> return diff;</span> |
| <span class="source-line-no">091</span><span id="line-91"> }</span> |
| <span class="source-line-no">092</span><span id="line-92"></span> |
| <span class="source-line-no">093</span><span id="line-93"> if (ignoreSequenceid) {</span> |
| <span class="source-line-no">094</span><span id="line-94"> return diff;</span> |
| <span class="source-line-no">095</span><span id="line-95"> }</span> |
| <span class="source-line-no">096</span><span id="line-96"> // Negate following comparisons so later edits show up first mvccVersion: later sorts first</span> |
| <span class="source-line-no">097</span><span id="line-97"> return Long.compare(PrivateCellUtil.getSequenceId(b), PrivateCellUtil.getSequenceId(a));</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"> @FunctionalInterface</span> |
| <span class="source-line-no">101</span><span id="line-101"> private interface SearchDelimiter<T> {</span> |
| <span class="source-line-no">102</span><span id="line-102"> int search(T t, int offset, int length, int delimiter);</span> |
| <span class="source-line-no">103</span><span id="line-103"> }</span> |
| <span class="source-line-no">104</span><span id="line-104"></span> |
| <span class="source-line-no">105</span><span id="line-105"> @FunctionalInterface</span> |
| <span class="source-line-no">106</span><span id="line-106"> private interface SearchDelimiterInReverse<T> {</span> |
| <span class="source-line-no">107</span><span id="line-107"> int search(T t, int offset, int length, int delimiter);</span> |
| <span class="source-line-no">108</span><span id="line-108"> }</span> |
| <span class="source-line-no">109</span><span id="line-109"></span> |
| <span class="source-line-no">110</span><span id="line-110"> @FunctionalInterface</span> |
| <span class="source-line-no">111</span><span id="line-111"> private interface Compare<L, R> {</span> |
| <span class="source-line-no">112</span><span id="line-112"> int compareTo(L left, int loffset, int llength, R right, int roffset, int rlength);</span> |
| <span class="source-line-no">113</span><span id="line-113"> }</span> |
| <span class="source-line-no">114</span><span id="line-114"></span> |
| <span class="source-line-no">115</span><span id="line-115"> private static <L, R> int compareRows(L left, int loffset, int llength, R right, int roffset,</span> |
| <span class="source-line-no">116</span><span id="line-116"> int rlength, SearchDelimiter<L> searchLeft, SearchDelimiter<R> searchRight,</span> |
| <span class="source-line-no">117</span><span id="line-117"> SearchDelimiterInReverse<L> searchInReverseLeft,</span> |
| <span class="source-line-no">118</span><span id="line-118"> SearchDelimiterInReverse<R> searchInReverseRight, Compare<L, R> comparator) {</span> |
| <span class="source-line-no">119</span><span id="line-119"> int leftDelimiter = searchLeft.search(left, loffset, llength, HConstants.DELIMITER);</span> |
| <span class="source-line-no">120</span><span id="line-120"> int rightDelimiter = searchRight.search(right, roffset, rlength, HConstants.DELIMITER);</span> |
| <span class="source-line-no">121</span><span id="line-121"> // Compare up to the delimiter</span> |
| <span class="source-line-no">122</span><span id="line-122"> int lpart = (leftDelimiter < 0 ? llength : leftDelimiter - loffset);</span> |
| <span class="source-line-no">123</span><span id="line-123"> int rpart = (rightDelimiter < 0 ? rlength : rightDelimiter - roffset);</span> |
| <span class="source-line-no">124</span><span id="line-124"> int result = comparator.compareTo(left, loffset, lpart, right, roffset, rpart);</span> |
| <span class="source-line-no">125</span><span id="line-125"> if (result != 0) {</span> |
| <span class="source-line-no">126</span><span id="line-126"> return result;</span> |
| <span class="source-line-no">127</span><span id="line-127"> } else {</span> |
| <span class="source-line-no">128</span><span id="line-128"> if (leftDelimiter < 0 && rightDelimiter >= 0) {</span> |
| <span class="source-line-no">129</span><span id="line-129"> return -1;</span> |
| <span class="source-line-no">130</span><span id="line-130"> } else if (rightDelimiter < 0 && leftDelimiter >= 0) {</span> |
| <span class="source-line-no">131</span><span id="line-131"> return 1;</span> |
| <span class="source-line-no">132</span><span id="line-132"> } else if (leftDelimiter < 0) {</span> |
| <span class="source-line-no">133</span><span id="line-133"> return 0;</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"> // Compare middle bit of the row.</span> |
| <span class="source-line-no">137</span><span id="line-137"> // Move past delimiter</span> |
| <span class="source-line-no">138</span><span id="line-138"> leftDelimiter++;</span> |
| <span class="source-line-no">139</span><span id="line-139"> rightDelimiter++;</span> |
| <span class="source-line-no">140</span><span id="line-140"> int leftFarDelimiter = searchInReverseLeft.search(left, leftDelimiter,</span> |
| <span class="source-line-no">141</span><span id="line-141"> llength - (leftDelimiter - loffset), HConstants.DELIMITER);</span> |
| <span class="source-line-no">142</span><span id="line-142"> int rightFarDelimiter = searchInReverseRight.search(right, rightDelimiter,</span> |
| <span class="source-line-no">143</span><span id="line-143"> rlength - (rightDelimiter - roffset), HConstants.DELIMITER);</span> |
| <span class="source-line-no">144</span><span id="line-144"> // Now compare middlesection of row.</span> |
| <span class="source-line-no">145</span><span id="line-145"> lpart = (leftFarDelimiter < 0 ? llength + loffset : leftFarDelimiter) - leftDelimiter;</span> |
| <span class="source-line-no">146</span><span id="line-146"> rpart = (rightFarDelimiter < 0 ? rlength + roffset : rightFarDelimiter) - rightDelimiter;</span> |
| <span class="source-line-no">147</span><span id="line-147"> result = comparator.compareTo(left, leftDelimiter, lpart, right, rightDelimiter, rpart);</span> |
| <span class="source-line-no">148</span><span id="line-148"> if (result != 0) {</span> |
| <span class="source-line-no">149</span><span id="line-149"> return result;</span> |
| <span class="source-line-no">150</span><span id="line-150"> } else {</span> |
| <span class="source-line-no">151</span><span id="line-151"> if (leftDelimiter < 0 && rightDelimiter >= 0) {</span> |
| <span class="source-line-no">152</span><span id="line-152"> return -1;</span> |
| <span class="source-line-no">153</span><span id="line-153"> } else if (rightDelimiter < 0 && leftDelimiter >= 0) {</span> |
| <span class="source-line-no">154</span><span id="line-154"> return 1;</span> |
| <span class="source-line-no">155</span><span id="line-155"> } else if (leftDelimiter < 0) {</span> |
| <span class="source-line-no">156</span><span id="line-156"> return 0;</span> |
| <span class="source-line-no">157</span><span id="line-157"> }</span> |
| <span class="source-line-no">158</span><span id="line-158"> }</span> |
| <span class="source-line-no">159</span><span id="line-159"> // Compare last part of row, the rowid.</span> |
| <span class="source-line-no">160</span><span id="line-160"> leftFarDelimiter++;</span> |
| <span class="source-line-no">161</span><span id="line-161"> rightFarDelimiter++;</span> |
| <span class="source-line-no">162</span><span id="line-162"> result = comparator.compareTo(left, leftFarDelimiter, llength - (leftFarDelimiter - loffset),</span> |
| <span class="source-line-no">163</span><span id="line-163"> right, rightFarDelimiter, rlength - (rightFarDelimiter - roffset));</span> |
| <span class="source-line-no">164</span><span id="line-164"> return result;</span> |
| <span class="source-line-no">165</span><span id="line-165"> }</span> |
| <span class="source-line-no">166</span><span id="line-166"></span> |
| <span class="source-line-no">167</span><span id="line-167"> private static int compareBBRows(ByteBuffer left, int loffset, int llength, ByteBuffer right,</span> |
| <span class="source-line-no">168</span><span id="line-168"> int roffset, int rlength) {</span> |
| <span class="source-line-no">169</span><span id="line-169"> if (left.hasArray()) {</span> |
| <span class="source-line-no">170</span><span id="line-170"> return -compareBBAndBytesRows(right, roffset, rlength, left.array(),</span> |
| <span class="source-line-no">171</span><span id="line-171"> left.arrayOffset() + loffset, llength);</span> |
| <span class="source-line-no">172</span><span id="line-172"> }</span> |
| <span class="source-line-no">173</span><span id="line-173"> if (right.hasArray()) {</span> |
| <span class="source-line-no">174</span><span id="line-174"> return compareBBAndBytesRows(left, loffset, llength, right.array(),</span> |
| <span class="source-line-no">175</span><span id="line-175"> right.arrayOffset() + roffset, rlength);</span> |
| <span class="source-line-no">176</span><span id="line-176"> }</span> |
| <span class="source-line-no">177</span><span id="line-177"> return compareRows(left, loffset, llength, right, roffset, rlength,</span> |
| <span class="source-line-no">178</span><span id="line-178"> ByteBufferUtils::searchDelimiterIndex, ByteBufferUtils::searchDelimiterIndex,</span> |
| <span class="source-line-no">179</span><span id="line-179"> ByteBufferUtils::searchDelimiterIndexInReverse,</span> |
| <span class="source-line-no">180</span><span id="line-180"> ByteBufferUtils::searchDelimiterIndexInReverse, ByteBufferUtils::compareTo);</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"> private static int compareBBAndBytesRows(ByteBuffer left, int loffset, int llength, byte[] right,</span> |
| <span class="source-line-no">184</span><span id="line-184"> int roffset, int rlength) {</span> |
| <span class="source-line-no">185</span><span id="line-185"> if (left.hasArray()) {</span> |
| <span class="source-line-no">186</span><span id="line-186"> return compareBytesRows(left.array(), left.arrayOffset() + loffset, llength, right, roffset,</span> |
| <span class="source-line-no">187</span><span id="line-187"> rlength);</span> |
| <span class="source-line-no">188</span><span id="line-188"> }</span> |
| <span class="source-line-no">189</span><span id="line-189"> return compareRows(left, loffset, llength, right, roffset, rlength,</span> |
| <span class="source-line-no">190</span><span id="line-190"> ByteBufferUtils::searchDelimiterIndex, Bytes::searchDelimiterIndex,</span> |
| <span class="source-line-no">191</span><span id="line-191"> ByteBufferUtils::searchDelimiterIndexInReverse, Bytes::searchDelimiterIndexInReverse,</span> |
| <span class="source-line-no">192</span><span id="line-192"> ByteBufferUtils::compareTo);</span> |
| <span class="source-line-no">193</span><span id="line-193"> }</span> |
| <span class="source-line-no">194</span><span id="line-194"></span> |
| <span class="source-line-no">195</span><span id="line-195"> private static int compareBytesRows(byte[] left, int loffset, int llength, byte[] right,</span> |
| <span class="source-line-no">196</span><span id="line-196"> int roffset, int rlength) {</span> |
| <span class="source-line-no">197</span><span id="line-197"> return compareRows(left, loffset, llength, right, roffset, rlength, Bytes::searchDelimiterIndex,</span> |
| <span class="source-line-no">198</span><span id="line-198"> Bytes::searchDelimiterIndex, Bytes::searchDelimiterIndexInReverse,</span> |
| <span class="source-line-no">199</span><span id="line-199"> Bytes::searchDelimiterIndexInReverse, Bytes::compareTo);</span> |
| <span class="source-line-no">200</span><span id="line-200"> }</span> |
| <span class="source-line-no">201</span><span id="line-201"></span> |
| <span class="source-line-no">202</span><span id="line-202"> @Override</span> |
| <span class="source-line-no">203</span><span id="line-203"> public int compareRows(ByteBuffer row, Cell cell) {</span> |
| <span class="source-line-no">204</span><span id="line-204"> if (cell instanceof ByteBufferExtendedCell) {</span> |
| <span class="source-line-no">205</span><span id="line-205"> ByteBufferExtendedCell bbCell = (ByteBufferExtendedCell) cell;</span> |
| <span class="source-line-no">206</span><span id="line-206"> return compareBBRows(row, row.position(), row.remaining(), bbCell.getRowByteBuffer(),</span> |
| <span class="source-line-no">207</span><span id="line-207"> bbCell.getRowPosition(), cell.getRowLength());</span> |
| <span class="source-line-no">208</span><span id="line-208"> } else {</span> |
| <span class="source-line-no">209</span><span id="line-209"> return compareBBAndBytesRows(row, row.position(), row.remaining(), cell.getRowArray(),</span> |
| <span class="source-line-no">210</span><span id="line-210"> cell.getRowOffset(), cell.getRowLength());</span> |
| <span class="source-line-no">211</span><span id="line-211"> }</span> |
| <span class="source-line-no">212</span><span id="line-212"> }</span> |
| <span class="source-line-no">213</span><span id="line-213"></span> |
| <span class="source-line-no">214</span><span id="line-214"> @Override</span> |
| <span class="source-line-no">215</span><span id="line-215"> public Comparator getSimpleComparator() {</span> |
| <span class="source-line-no">216</span><span id="line-216"> return this;</span> |
| <span class="source-line-no">217</span><span id="line-217"> }</span> |
| <span class="source-line-no">218</span><span id="line-218"></span> |
| <span class="source-line-no">219</span><span id="line-219">}</span> |
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| </pre> |
| </div> |
| </main> |
| </body> |
| </html> |
