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| <pre><span class="sourceLineNo">001</span>/*<a name="line.1"></a> |
| <span class="sourceLineNo">002</span> * Licensed to the Apache Software Foundation (ASF) under one or more<a name="line.2"></a> |
| <span class="sourceLineNo">003</span> * contributor license agreements. See the NOTICE file distributed with this<a name="line.3"></a> |
| <span class="sourceLineNo">004</span> * work for additional information regarding copyright ownership. The ASF<a name="line.4"></a> |
| <span class="sourceLineNo">005</span> * licenses this file to you under the Apache License, Version 2.0 (the<a name="line.5"></a> |
| <span class="sourceLineNo">006</span> * "License"); you may not use this file except in compliance with the License.<a name="line.6"></a> |
| <span class="sourceLineNo">007</span> * You may obtain a copy of the License at<a name="line.7"></a> |
| <span class="sourceLineNo">008</span> *<a name="line.8"></a> |
| <span class="sourceLineNo">009</span> * http://www.apache.org/licenses/LICENSE-2.0<a name="line.9"></a> |
| <span class="sourceLineNo">010</span> *<a name="line.10"></a> |
| <span class="sourceLineNo">011</span> * Unless required by applicable law or agreed to in writing, software<a name="line.11"></a> |
| <span class="sourceLineNo">012</span> * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT<a name="line.12"></a> |
| <span class="sourceLineNo">013</span> * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the<a name="line.13"></a> |
| <span class="sourceLineNo">014</span> * License for the specific language governing permissions and limitations<a name="line.14"></a> |
| <span class="sourceLineNo">015</span> * under the License.<a name="line.15"></a> |
| <span class="sourceLineNo">016</span> */<a name="line.16"></a> |
| <span class="sourceLineNo">017</span>package org.apache.hadoop.hbase.io.encoding;<a name="line.17"></a> |
| <span class="sourceLineNo">018</span><a name="line.18"></a> |
| <span class="sourceLineNo">019</span>import java.io.IOException;<a name="line.19"></a> |
| <span class="sourceLineNo">020</span>import java.nio.ByteBuffer;<a name="line.20"></a> |
| <span class="sourceLineNo">021</span><a name="line.21"></a> |
| <span class="sourceLineNo">022</span>import org.apache.hadoop.hbase.ByteBufferKeyOnlyKeyValue;<a name="line.22"></a> |
| <span class="sourceLineNo">023</span>import org.apache.hadoop.hbase.Cell;<a name="line.23"></a> |
| <span class="sourceLineNo">024</span>import org.apache.hadoop.hbase.CellComparator;<a name="line.24"></a> |
| <span class="sourceLineNo">025</span>import org.apache.hadoop.hbase.KeyValue;<a name="line.25"></a> |
| <span class="sourceLineNo">026</span>import org.apache.hadoop.hbase.io.hfile.BlockType;<a name="line.26"></a> |
| <span class="sourceLineNo">027</span>import org.apache.hadoop.hbase.io.hfile.HFileContext;<a name="line.27"></a> |
| <span class="sourceLineNo">028</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.28"></a> |
| <span class="sourceLineNo">029</span><a name="line.29"></a> |
| <span class="sourceLineNo">030</span>@InterfaceAudience.Private<a name="line.30"></a> |
| <span class="sourceLineNo">031</span>public abstract class AbstractDataBlockEncoder implements DataBlockEncoder {<a name="line.31"></a> |
| <span class="sourceLineNo">032</span><a name="line.32"></a> |
| <span class="sourceLineNo">033</span> @Override<a name="line.33"></a> |
| <span class="sourceLineNo">034</span> public HFileBlockEncodingContext newDataBlockEncodingContext(<a name="line.34"></a> |
| <span class="sourceLineNo">035</span> DataBlockEncoding encoding, byte[] header, HFileContext meta) {<a name="line.35"></a> |
| <span class="sourceLineNo">036</span> return new HFileBlockDefaultEncodingContext(encoding, header, meta);<a name="line.36"></a> |
| <span class="sourceLineNo">037</span> }<a name="line.37"></a> |
| <span class="sourceLineNo">038</span><a name="line.38"></a> |
| <span class="sourceLineNo">039</span> @Override<a name="line.39"></a> |
| <span class="sourceLineNo">040</span> public HFileBlockDecodingContext newDataBlockDecodingContext(HFileContext meta) {<a name="line.40"></a> |
| <span class="sourceLineNo">041</span> return new HFileBlockDefaultDecodingContext(meta);<a name="line.41"></a> |
| <span class="sourceLineNo">042</span> }<a name="line.42"></a> |
| <span class="sourceLineNo">043</span><a name="line.43"></a> |
| <span class="sourceLineNo">044</span> protected void postEncoding(HFileBlockEncodingContext encodingCtx)<a name="line.44"></a> |
| <span class="sourceLineNo">045</span> throws IOException {<a name="line.45"></a> |
| <span class="sourceLineNo">046</span> if (encodingCtx.getDataBlockEncoding() != DataBlockEncoding.NONE) {<a name="line.46"></a> |
| <span class="sourceLineNo">047</span> encodingCtx.postEncoding(BlockType.ENCODED_DATA);<a name="line.47"></a> |
| <span class="sourceLineNo">048</span> } else {<a name="line.48"></a> |
| <span class="sourceLineNo">049</span> encodingCtx.postEncoding(BlockType.DATA);<a name="line.49"></a> |
| <span class="sourceLineNo">050</span> }<a name="line.50"></a> |
| <span class="sourceLineNo">051</span> }<a name="line.51"></a> |
| <span class="sourceLineNo">052</span><a name="line.52"></a> |
| <span class="sourceLineNo">053</span> protected Cell createFirstKeyCell(ByteBuffer key, int keyLength) {<a name="line.53"></a> |
| <span class="sourceLineNo">054</span> if (key.hasArray()) {<a name="line.54"></a> |
| <span class="sourceLineNo">055</span> return new KeyValue.KeyOnlyKeyValue(key.array(), key.arrayOffset()<a name="line.55"></a> |
| <span class="sourceLineNo">056</span> + key.position(), keyLength);<a name="line.56"></a> |
| <span class="sourceLineNo">057</span> } else {<a name="line.57"></a> |
| <span class="sourceLineNo">058</span> return new ByteBufferKeyOnlyKeyValue(key, key.position(), keyLength);<a name="line.58"></a> |
| <span class="sourceLineNo">059</span> }<a name="line.59"></a> |
| <span class="sourceLineNo">060</span> }<a name="line.60"></a> |
| <span class="sourceLineNo">061</span><a name="line.61"></a> |
| <span class="sourceLineNo">062</span> protected abstract static class AbstractEncodedSeeker implements<a name="line.62"></a> |
| <span class="sourceLineNo">063</span> EncodedSeeker {<a name="line.63"></a> |
| <span class="sourceLineNo">064</span> protected HFileBlockDecodingContext decodingCtx;<a name="line.64"></a> |
| <span class="sourceLineNo">065</span> protected final CellComparator comparator;<a name="line.65"></a> |
| <span class="sourceLineNo">066</span><a name="line.66"></a> |
| <span class="sourceLineNo">067</span> public AbstractEncodedSeeker(CellComparator comparator,<a name="line.67"></a> |
| <span class="sourceLineNo">068</span> HFileBlockDecodingContext decodingCtx) {<a name="line.68"></a> |
| <span class="sourceLineNo">069</span> this.comparator = comparator;<a name="line.69"></a> |
| <span class="sourceLineNo">070</span> this.decodingCtx = decodingCtx;<a name="line.70"></a> |
| <span class="sourceLineNo">071</span> }<a name="line.71"></a> |
| <span class="sourceLineNo">072</span><a name="line.72"></a> |
| <span class="sourceLineNo">073</span> protected boolean includesMvcc() {<a name="line.73"></a> |
| <span class="sourceLineNo">074</span> return this.decodingCtx.getHFileContext().isIncludesMvcc();<a name="line.74"></a> |
| <span class="sourceLineNo">075</span> }<a name="line.75"></a> |
| <span class="sourceLineNo">076</span><a name="line.76"></a> |
| <span class="sourceLineNo">077</span> protected boolean includesTags() {<a name="line.77"></a> |
| <span class="sourceLineNo">078</span> return this.decodingCtx.getHFileContext().isIncludesTags();<a name="line.78"></a> |
| <span class="sourceLineNo">079</span> }<a name="line.79"></a> |
| <span class="sourceLineNo">080</span><a name="line.80"></a> |
| <span class="sourceLineNo">081</span> }<a name="line.81"></a> |
| <span class="sourceLineNo">082</span><a name="line.82"></a> |
| <span class="sourceLineNo">083</span>}<a name="line.83"></a> |
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