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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.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.hadoop.hbase.Cell;</span> |
| <span class="source-line-no">021</span><span id="line-21">import org.apache.hadoop.hbase.KeyValue;</span> |
| <span class="source-line-no">022</span><span id="line-22">import org.apache.hadoop.hbase.PrivateCellUtil;</span> |
| <span class="source-line-no">023</span><span id="line-23">import org.apache.yetus.audience.InterfaceAudience;</span> |
| <span class="source-line-no">024</span><span id="line-24"></span> |
| <span class="source-line-no">025</span><span id="line-25">/**</span> |
| <span class="source-line-no">026</span><span id="line-26"> * An hash key for ROWCOL bloom. This assumes the cells to be serialized in the Keyvalue</span> |
| <span class="source-line-no">027</span><span id="line-27"> * serialization format with Empty column family. Note that the byte representing the family length</span> |
| <span class="source-line-no">028</span><span id="line-28"> * is considered to be 0</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">public class RowColBloomHashKey extends CellHashKey {</span> |
| <span class="source-line-no">032</span><span id="line-32"></span> |
| <span class="source-line-no">033</span><span id="line-33"> private final int rowLength;</span> |
| <span class="source-line-no">034</span><span id="line-34"> private final int qualLength;</span> |
| <span class="source-line-no">035</span><span id="line-35"></span> |
| <span class="source-line-no">036</span><span id="line-36"> public RowColBloomHashKey(Cell cell) {</span> |
| <span class="source-line-no">037</span><span id="line-37"> super(cell);</span> |
| <span class="source-line-no">038</span><span id="line-38"> rowLength = cell.getRowLength();</span> |
| <span class="source-line-no">039</span><span id="line-39"> // We don't consider the family length for ROWCOL bloom. So subtract the famLen from the</span> |
| <span class="source-line-no">040</span><span id="line-40"> // length calculation. Timestamp and type are of no relevance here</span> |
| <span class="source-line-no">041</span><span id="line-41"> qualLength = cell.getQualifierLength();</span> |
| <span class="source-line-no">042</span><span id="line-42"> }</span> |
| <span class="source-line-no">043</span><span id="line-43"></span> |
| <span class="source-line-no">044</span><span id="line-44"> @Override</span> |
| <span class="source-line-no">045</span><span id="line-45"> public byte get(int offset) {</span> |
| <span class="source-line-no">046</span><span id="line-46"> // For ROW_COL blooms we use bytes</span> |
| <span class="source-line-no">047</span><span id="line-47"> // <RK length> (2 bytes) , <RK>, 0 (one byte CF length), <CQ>, <TS> (8 btes), <TYPE> ( 1 byte)</span> |
| <span class="source-line-no">048</span><span id="line-48"> if (offset < Bytes.SIZEOF_SHORT) {</span> |
| <span class="source-line-no">049</span><span id="line-49"> // assign locally</span> |
| <span class="source-line-no">050</span><span id="line-50"> int rowlen = rowLength;</span> |
| <span class="source-line-no">051</span><span id="line-51"> byte b = (byte) rowlen;</span> |
| <span class="source-line-no">052</span><span id="line-52"> if (offset == 0) {</span> |
| <span class="source-line-no">053</span><span id="line-53"> rowlen >>= 8;</span> |
| <span class="source-line-no">054</span><span id="line-54"> b = (byte) rowlen;</span> |
| <span class="source-line-no">055</span><span id="line-55"> }</span> |
| <span class="source-line-no">056</span><span id="line-56"> return b;</span> |
| <span class="source-line-no">057</span><span id="line-57"> }</span> |
| <span class="source-line-no">058</span><span id="line-58"> int refLen = Bytes.SIZEOF_SHORT + rowLength;</span> |
| <span class="source-line-no">059</span><span id="line-59"> if (offset < refLen) {</span> |
| <span class="source-line-no">060</span><span id="line-60"> return PrivateCellUtil.getRowByte(t, offset - Bytes.SIZEOF_SHORT);</span> |
| <span class="source-line-no">061</span><span id="line-61"> }</span> |
| <span class="source-line-no">062</span><span id="line-62"> if (offset == refLen) {</span> |
| <span class="source-line-no">063</span><span id="line-63"> // The fam length should return 0 assuming there is no column family.</span> |
| <span class="source-line-no">064</span><span id="line-64"> // Because for ROWCOL blooms family is not considered</span> |
| <span class="source-line-no">065</span><span id="line-65"> return 0;</span> |
| <span class="source-line-no">066</span><span id="line-66"> }</span> |
| <span class="source-line-no">067</span><span id="line-67"> refLen += qualLength + Bytes.SIZEOF_BYTE;</span> |
| <span class="source-line-no">068</span><span id="line-68"> // skip the family len because actual cells may have family also</span> |
| <span class="source-line-no">069</span><span id="line-69"> if (offset < refLen) {</span> |
| <span class="source-line-no">070</span><span id="line-70"> return PrivateCellUtil.getQualifierByte(t,</span> |
| <span class="source-line-no">071</span><span id="line-71"> offset - (Bytes.SIZEOF_SHORT + rowLength + Bytes.SIZEOF_BYTE));</span> |
| <span class="source-line-no">072</span><span id="line-72"> }</span> |
| <span class="source-line-no">073</span><span id="line-73"> // TODO : check if ts and type can be removed</span> |
| <span class="source-line-no">074</span><span id="line-74"> refLen += KeyValue.TIMESTAMP_SIZE;</span> |
| <span class="source-line-no">075</span><span id="line-75"> if (offset < refLen) {</span> |
| <span class="source-line-no">076</span><span id="line-76"> return LATEST_TS[offset - (Bytes.SIZEOF_SHORT + rowLength + qualLength + Bytes.SIZEOF_BYTE)];</span> |
| <span class="source-line-no">077</span><span id="line-77"> }</span> |
| <span class="source-line-no">078</span><span id="line-78"> return MAX_TYPE;</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 length() {</span> |
| <span class="source-line-no">083</span><span id="line-83"> // For ROW_COL blooms we use bytes</span> |
| <span class="source-line-no">084</span><span id="line-84"> // <RK length> (2 bytes) , <RK>, 0 (one byte CF length), <CQ>, <TS> (8 btes), <TYPE> ( 1 byte)</span> |
| <span class="source-line-no">085</span><span id="line-85"> return KeyValue.ROW_LENGTH_SIZE + this.t.getRowLength() + KeyValue.FAMILY_LENGTH_SIZE</span> |
| <span class="source-line-no">086</span><span id="line-86"> + this.t.getQualifierLength() + KeyValue.TIMESTAMP_TYPE_SIZE;</span> |
| <span class="source-line-no">087</span><span id="line-87"> }</span> |
| <span class="source-line-no">088</span><span id="line-88">}</span> |
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