http://git-wip-us.apache.org/repos/asf/hbase-site/blob/45a663dd/devapidocs/src-html/org/apache/hadoop/hbase/io/encoding/DataBlockEncoding.html ---------------------------------------------------------------------- diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/io/encoding/DataBlockEncoding.html b/devapidocs/src-html/org/apache/hadoop/hbase/io/encoding/DataBlockEncoding.html index 25baad1..20ae1c1 100644 --- a/devapidocs/src-html/org/apache/hadoop/hbase/io/encoding/DataBlockEncoding.html +++ b/devapidocs/src-html/org/apache/hadoop/hbase/io/encoding/DataBlockEncoding.html @@ -24,14 +24,14 @@ <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.io.OutputStream;<a name="line.20"></a> -<span class="sourceLineNo">021</span>import java.util.HashMap;<a name="line.21"></a> -<span class="sourceLineNo">022</span>import java.util.Map;<a name="line.22"></a> -<span class="sourceLineNo">023</span><a name="line.23"></a> -<span class="sourceLineNo">024</span>import org.apache.hadoop.hbase.classification.InterfaceAudience;<a name="line.24"></a> -<span class="sourceLineNo">025</span>import org.apache.hadoop.hbase.classification.InterfaceStability;<a name="line.25"></a> -<span class="sourceLineNo">026</span>import org.apache.hadoop.hbase.util.Bytes;<a name="line.26"></a> +<span class="sourceLineNo">019</span>import org.apache.hadoop.hbase.classification.InterfaceAudience;<a name="line.19"></a> +<span class="sourceLineNo">020</span>import org.apache.hadoop.hbase.classification.InterfaceStability;<a name="line.20"></a> +<span class="sourceLineNo">021</span>import org.apache.hadoop.hbase.util.Bytes;<a name="line.21"></a> +<span class="sourceLineNo">022</span><a name="line.22"></a> +<span class="sourceLineNo">023</span>import java.io.IOException;<a name="line.23"></a> +<span class="sourceLineNo">024</span>import java.io.OutputStream;<a name="line.24"></a> +<span class="sourceLineNo">025</span>import java.util.HashMap;<a name="line.25"></a> +<span class="sourceLineNo">026</span>import java.util.Map;<a name="line.26"></a> <span class="sourceLineNo">027</span><a name="line.27"></a> <span class="sourceLineNo">028</span>/**<a name="line.28"></a> <span class="sourceLineNo">029</span> * Provide access to all data block encoding algorithms. All of the algorithms<a name="line.29"></a> @@ -51,157 +51,158 @@ <span class="sourceLineNo">043</span> FAST_DIFF(4, "org.apache.hadoop.hbase.io.encoding.FastDiffDeltaEncoder"),<a name="line.43"></a> <span class="sourceLineNo">044</span> // id 5 is reserved for the COPY_KEY algorithm for benchmarking<a name="line.44"></a> <span class="sourceLineNo">045</span> // COPY_KEY(5, "org.apache.hadoop.hbase.io.encoding.CopyKeyDataBlockEncoder"),<a name="line.45"></a> -<span class="sourceLineNo">046</span> PREFIX_TREE(6, "org.apache.hadoop.hbase.codec.prefixtree.PrefixTreeCodec");<a name="line.46"></a> -<span class="sourceLineNo">047</span><a name="line.47"></a> -<span class="sourceLineNo">048</span> private final short id;<a name="line.48"></a> -<span class="sourceLineNo">049</span> private final byte[] idInBytes;<a name="line.49"></a> -<span class="sourceLineNo">050</span> private DataBlockEncoder encoder;<a name="line.50"></a> -<span class="sourceLineNo">051</span> private final String encoderCls;<a name="line.51"></a> -<span class="sourceLineNo">052</span><a name="line.52"></a> -<span class="sourceLineNo">053</span> public static final int ID_SIZE = Bytes.SIZEOF_SHORT;<a name="line.53"></a> -<span class="sourceLineNo">054</span><a name="line.54"></a> -<span class="sourceLineNo">055</span> /** Maps data block encoding ids to enum instances. */<a name="line.55"></a> -<span class="sourceLineNo">056</span> private static Map<Short, DataBlockEncoding> idToEncoding =<a name="line.56"></a> -<span class="sourceLineNo">057</span> new HashMap<Short, DataBlockEncoding>();<a name="line.57"></a> -<span class="sourceLineNo">058</span><a name="line.58"></a> -<span class="sourceLineNo">059</span> static {<a name="line.59"></a> -<span class="sourceLineNo">060</span> for (DataBlockEncoding algo : values()) {<a name="line.60"></a> -<span class="sourceLineNo">061</span> if (idToEncoding.containsKey(algo.id)) {<a name="line.61"></a> -<span class="sourceLineNo">062</span> throw new RuntimeException(String.format(<a name="line.62"></a> -<span class="sourceLineNo">063</span> "Two data block encoder algorithms '%s' and '%s' have " +<a name="line.63"></a> -<span class="sourceLineNo">064</span> "the same id %d",<a name="line.64"></a> -<span class="sourceLineNo">065</span> idToEncoding.get(algo.id).toString(), algo.toString(),<a name="line.65"></a> -<span class="sourceLineNo">066</span> (int) algo.id));<a name="line.66"></a> -<span class="sourceLineNo">067</span> }<a name="line.67"></a> -<span class="sourceLineNo">068</span> idToEncoding.put(algo.id, algo);<a name="line.68"></a> -<span class="sourceLineNo">069</span> }<a name="line.69"></a> -<span class="sourceLineNo">070</span> }<a name="line.70"></a> -<span class="sourceLineNo">071</span><a name="line.71"></a> -<span class="sourceLineNo">072</span> private DataBlockEncoding(int id, String encoderClsName) {<a name="line.72"></a> -<span class="sourceLineNo">073</span> if (id < Short.MIN_VALUE || id > Short.MAX_VALUE) {<a name="line.73"></a> -<span class="sourceLineNo">074</span> throw new AssertionError(<a name="line.74"></a> -<span class="sourceLineNo">075</span> "Data block encoding algorithm id is out of range: " + id);<a name="line.75"></a> -<span class="sourceLineNo">076</span> }<a name="line.76"></a> -<span class="sourceLineNo">077</span> this.id = (short) id;<a name="line.77"></a> -<span class="sourceLineNo">078</span> this.idInBytes = Bytes.toBytes(this.id);<a name="line.78"></a> -<span class="sourceLineNo">079</span> if (idInBytes.length != ID_SIZE) {<a name="line.79"></a> -<span class="sourceLineNo">080</span> // White this may seem redundant, if we accidentally serialize<a name="line.80"></a> -<span class="sourceLineNo">081</span> // the id as e.g. an int instead of a short, all encoders will break.<a name="line.81"></a> -<span class="sourceLineNo">082</span> throw new RuntimeException("Unexpected length of encoder ID byte " +<a name="line.82"></a> -<span class="sourceLineNo">083</span> "representation: " + Bytes.toStringBinary(idInBytes));<a name="line.83"></a> -<span class="sourceLineNo">084</span> }<a name="line.84"></a> -<span class="sourceLineNo">085</span> this.encoderCls = encoderClsName;<a name="line.85"></a> -<span class="sourceLineNo">086</span> }<a name="line.86"></a> -<span class="sourceLineNo">087</span><a name="line.87"></a> -<span class="sourceLineNo">088</span> /**<a name="line.88"></a> -<span class="sourceLineNo">089</span> * @return name converted to bytes.<a name="line.89"></a> -<span class="sourceLineNo">090</span> */<a name="line.90"></a> -<span class="sourceLineNo">091</span> public byte[] getNameInBytes() {<a name="line.91"></a> -<span class="sourceLineNo">092</span> return Bytes.toBytes(toString());<a name="line.92"></a> -<span class="sourceLineNo">093</span> }<a name="line.93"></a> -<span class="sourceLineNo">094</span><a name="line.94"></a> -<span class="sourceLineNo">095</span> /**<a name="line.95"></a> -<span class="sourceLineNo">096</span> * @return The id of a data block encoder.<a name="line.96"></a> -<span class="sourceLineNo">097</span> */<a name="line.97"></a> -<span class="sourceLineNo">098</span> public short getId() {<a name="line.98"></a> -<span class="sourceLineNo">099</span> return id;<a name="line.99"></a> -<span class="sourceLineNo">100</span> }<a name="line.100"></a> -<span class="sourceLineNo">101</span><a name="line.101"></a> -<span class="sourceLineNo">102</span> /**<a name="line.102"></a> -<span class="sourceLineNo">103</span> * Writes id in bytes.<a name="line.103"></a> -<span class="sourceLineNo">104</span> * @param stream where the id should be written.<a name="line.104"></a> -<span class="sourceLineNo">105</span> */<a name="line.105"></a> -<span class="sourceLineNo">106</span> public void writeIdInBytes(OutputStream stream) throws IOException {<a name="line.106"></a> -<span class="sourceLineNo">107</span> stream.write(idInBytes);<a name="line.107"></a> -<span class="sourceLineNo">108</span> }<a name="line.108"></a> -<span class="sourceLineNo">109</span><a name="line.109"></a> +<span class="sourceLineNo">046</span> PREFIX_TREE(6, "org.apache.hadoop.hbase.codec.prefixtree.PrefixTreeCodec"),<a name="line.46"></a> +<span class="sourceLineNo">047</span> ROW_INDEX_V1(7, "org.apache.hadoop.hbase.io.encoding.RowIndexCodecV1");<a name="line.47"></a> +<span class="sourceLineNo">048</span><a name="line.48"></a> +<span class="sourceLineNo">049</span> private final short id;<a name="line.49"></a> +<span class="sourceLineNo">050</span> private final byte[] idInBytes;<a name="line.50"></a> +<span class="sourceLineNo">051</span> private DataBlockEncoder encoder;<a name="line.51"></a> +<span class="sourceLineNo">052</span> private final String encoderCls;<a name="line.52"></a> +<span class="sourceLineNo">053</span><a name="line.53"></a> +<span class="sourceLineNo">054</span> public static final int ID_SIZE = Bytes.SIZEOF_SHORT;<a name="line.54"></a> +<span class="sourceLineNo">055</span><a name="line.55"></a> +<span class="sourceLineNo">056</span> /** Maps data block encoding ids to enum instances. */<a name="line.56"></a> +<span class="sourceLineNo">057</span> private static Map<Short, DataBlockEncoding> idToEncoding =<a name="line.57"></a> +<span class="sourceLineNo">058</span> new HashMap<Short, DataBlockEncoding>();<a name="line.58"></a> +<span class="sourceLineNo">059</span><a name="line.59"></a> +<span class="sourceLineNo">060</span> static {<a name="line.60"></a> +<span class="sourceLineNo">061</span> for (DataBlockEncoding algo : values()) {<a name="line.61"></a> +<span class="sourceLineNo">062</span> if (idToEncoding.containsKey(algo.id)) {<a name="line.62"></a> +<span class="sourceLineNo">063</span> throw new RuntimeException(String.format(<a name="line.63"></a> +<span class="sourceLineNo">064</span> "Two data block encoder algorithms '%s' and '%s' have " +<a name="line.64"></a> +<span class="sourceLineNo">065</span> "the same id %d",<a name="line.65"></a> +<span class="sourceLineNo">066</span> idToEncoding.get(algo.id).toString(), algo.toString(),<a name="line.66"></a> +<span class="sourceLineNo">067</span> (int) algo.id));<a name="line.67"></a> +<span class="sourceLineNo">068</span> }<a name="line.68"></a> +<span class="sourceLineNo">069</span> idToEncoding.put(algo.id, algo);<a name="line.69"></a> +<span class="sourceLineNo">070</span> }<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> private DataBlockEncoding(int id, String encoderClsName) {<a name="line.73"></a> +<span class="sourceLineNo">074</span> if (id < Short.MIN_VALUE || id > Short.MAX_VALUE) {<a name="line.74"></a> +<span class="sourceLineNo">075</span> throw new AssertionError(<a name="line.75"></a> +<span class="sourceLineNo">076</span> "Data block encoding algorithm id is out of range: " + id);<a name="line.76"></a> +<span class="sourceLineNo">077</span> }<a name="line.77"></a> +<span class="sourceLineNo">078</span> this.id = (short) id;<a name="line.78"></a> +<span class="sourceLineNo">079</span> this.idInBytes = Bytes.toBytes(this.id);<a name="line.79"></a> +<span class="sourceLineNo">080</span> if (idInBytes.length != ID_SIZE) {<a name="line.80"></a> +<span class="sourceLineNo">081</span> // White this may seem redundant, if we accidentally serialize<a name="line.81"></a> +<span class="sourceLineNo">082</span> // the id as e.g. an int instead of a short, all encoders will break.<a name="line.82"></a> +<span class="sourceLineNo">083</span> throw new RuntimeException("Unexpected length of encoder ID byte " +<a name="line.83"></a> +<span class="sourceLineNo">084</span> "representation: " + Bytes.toStringBinary(idInBytes));<a name="line.84"></a> +<span class="sourceLineNo">085</span> }<a name="line.85"></a> +<span class="sourceLineNo">086</span> this.encoderCls = encoderClsName;<a name="line.86"></a> +<span class="sourceLineNo">087</span> }<a name="line.87"></a> +<span class="sourceLineNo">088</span><a name="line.88"></a> +<span class="sourceLineNo">089</span> /**<a name="line.89"></a> +<span class="sourceLineNo">090</span> * @return name converted to bytes.<a name="line.90"></a> +<span class="sourceLineNo">091</span> */<a name="line.91"></a> +<span class="sourceLineNo">092</span> public byte[] getNameInBytes() {<a name="line.92"></a> +<span class="sourceLineNo">093</span> return Bytes.toBytes(toString());<a name="line.93"></a> +<span class="sourceLineNo">094</span> }<a name="line.94"></a> +<span class="sourceLineNo">095</span><a name="line.95"></a> +<span class="sourceLineNo">096</span> /**<a name="line.96"></a> +<span class="sourceLineNo">097</span> * @return The id of a data block encoder.<a name="line.97"></a> +<span class="sourceLineNo">098</span> */<a name="line.98"></a> +<span class="sourceLineNo">099</span> public short getId() {<a name="line.99"></a> +<span class="sourceLineNo">100</span> return id;<a name="line.100"></a> +<span class="sourceLineNo">101</span> }<a name="line.101"></a> +<span class="sourceLineNo">102</span><a name="line.102"></a> +<span class="sourceLineNo">103</span> /**<a name="line.103"></a> +<span class="sourceLineNo">104</span> * Writes id in bytes.<a name="line.104"></a> +<span class="sourceLineNo">105</span> * @param stream where the id should be written.<a name="line.105"></a> +<span class="sourceLineNo">106</span> */<a name="line.106"></a> +<span class="sourceLineNo">107</span> public void writeIdInBytes(OutputStream stream) throws IOException {<a name="line.107"></a> +<span class="sourceLineNo">108</span> stream.write(idInBytes);<a name="line.108"></a> +<span class="sourceLineNo">109</span> }<a name="line.109"></a> <span class="sourceLineNo">110</span><a name="line.110"></a> -<span class="sourceLineNo">111</span> /**<a name="line.111"></a> -<span class="sourceLineNo">112</span> * Writes id bytes to the given array starting from offset.<a name="line.112"></a> -<span class="sourceLineNo">113</span> *<a name="line.113"></a> -<span class="sourceLineNo">114</span> * @param dest output array<a name="line.114"></a> -<span class="sourceLineNo">115</span> * @param offset starting offset of the output array<a name="line.115"></a> -<span class="sourceLineNo">116</span> * @throws IOException<a name="line.116"></a> -<span class="sourceLineNo">117</span> */<a name="line.117"></a> -<span class="sourceLineNo">118</span> public void writeIdInBytes(byte[] dest, int offset) throws IOException {<a name="line.118"></a> -<span class="sourceLineNo">119</span> System.arraycopy(idInBytes, 0, dest, offset, ID_SIZE);<a name="line.119"></a> -<span class="sourceLineNo">120</span> }<a name="line.120"></a> -<span class="sourceLineNo">121</span><a name="line.121"></a> -<span class="sourceLineNo">122</span> /**<a name="line.122"></a> -<span class="sourceLineNo">123</span> * Return new data block encoder for given algorithm type.<a name="line.123"></a> -<span class="sourceLineNo">124</span> * @return data block encoder if algorithm is specified, null if none is<a name="line.124"></a> -<span class="sourceLineNo">125</span> * selected.<a name="line.125"></a> -<span class="sourceLineNo">126</span> */<a name="line.126"></a> -<span class="sourceLineNo">127</span> public DataBlockEncoder getEncoder() {<a name="line.127"></a> -<span class="sourceLineNo">128</span> if (encoder == null && id != 0) {<a name="line.128"></a> -<span class="sourceLineNo">129</span> // lazily create the encoder<a name="line.129"></a> -<span class="sourceLineNo">130</span> encoder = createEncoder(encoderCls);<a name="line.130"></a> -<span class="sourceLineNo">131</span> }<a name="line.131"></a> -<span class="sourceLineNo">132</span> return encoder;<a name="line.132"></a> -<span class="sourceLineNo">133</span> }<a name="line.133"></a> -<span class="sourceLineNo">134</span><a name="line.134"></a> -<span class="sourceLineNo">135</span> /**<a name="line.135"></a> -<span class="sourceLineNo">136</span> * Find and create data block encoder for given id;<a name="line.136"></a> -<span class="sourceLineNo">137</span> * @param encoderId id of data block encoder.<a name="line.137"></a> -<span class="sourceLineNo">138</span> * @return Newly created data block encoder.<a name="line.138"></a> -<span class="sourceLineNo">139</span> */<a name="line.139"></a> -<span class="sourceLineNo">140</span> public static DataBlockEncoder getDataBlockEncoderById(short encoderId) {<a name="line.140"></a> -<span class="sourceLineNo">141</span> if (!idToEncoding.containsKey(encoderId)) {<a name="line.141"></a> -<span class="sourceLineNo">142</span> throw new IllegalArgumentException(String.format(<a name="line.142"></a> -<span class="sourceLineNo">143</span> "There is no data block encoder for given id '%d'",<a name="line.143"></a> -<span class="sourceLineNo">144</span> (int) encoderId));<a name="line.144"></a> -<span class="sourceLineNo">145</span> }<a name="line.145"></a> -<span class="sourceLineNo">146</span><a name="line.146"></a> -<span class="sourceLineNo">147</span> return idToEncoding.get(encoderId).getEncoder();<a name="line.147"></a> -<span class="sourceLineNo">148</span> }<a name="line.148"></a> -<span class="sourceLineNo">149</span><a name="line.149"></a> -<span class="sourceLineNo">150</span> /**<a name="line.150"></a> -<span class="sourceLineNo">151</span> * Find and return the name of data block encoder for the given id.<a name="line.151"></a> -<span class="sourceLineNo">152</span> * @param encoderId id of data block encoder<a name="line.152"></a> -<span class="sourceLineNo">153</span> * @return name, same as used in options in column family<a name="line.153"></a> -<span class="sourceLineNo">154</span> */<a name="line.154"></a> -<span class="sourceLineNo">155</span> public static String getNameFromId(short encoderId) {<a name="line.155"></a> -<span class="sourceLineNo">156</span> return idToEncoding.get(encoderId).toString();<a name="line.156"></a> -<span class="sourceLineNo">157</span> }<a name="line.157"></a> -<span class="sourceLineNo">158</span><a name="line.158"></a> -<span class="sourceLineNo">159</span> /**<a name="line.159"></a> -<span class="sourceLineNo">160</span> * Check if given encoder has this id.<a name="line.160"></a> -<span class="sourceLineNo">161</span> * @param encoder encoder which id will be checked<a name="line.161"></a> -<span class="sourceLineNo">162</span> * @param encoderId id which we except<a name="line.162"></a> -<span class="sourceLineNo">163</span> * @return true if id is right for given encoder, false otherwise<a name="line.163"></a> -<span class="sourceLineNo">164</span> * @exception IllegalArgumentException<a name="line.164"></a> -<span class="sourceLineNo">165</span> * thrown when there is no matching data block encoder<a name="line.165"></a> -<span class="sourceLineNo">166</span> */<a name="line.166"></a> -<span class="sourceLineNo">167</span> public static boolean isCorrectEncoder(DataBlockEncoder encoder,<a name="line.167"></a> -<span class="sourceLineNo">168</span> short encoderId) {<a name="line.168"></a> -<span class="sourceLineNo">169</span> if (!idToEncoding.containsKey(encoderId)) {<a name="line.169"></a> -<span class="sourceLineNo">170</span> throw new IllegalArgumentException(String.format(<a name="line.170"></a> -<span class="sourceLineNo">171</span> "There is no data block encoder for given id '%d'",<a name="line.171"></a> -<span class="sourceLineNo">172</span> (int) encoderId));<a name="line.172"></a> -<span class="sourceLineNo">173</span> }<a name="line.173"></a> -<span class="sourceLineNo">174</span><a name="line.174"></a> -<span class="sourceLineNo">175</span> DataBlockEncoding algorithm = idToEncoding.get(encoderId);<a name="line.175"></a> -<span class="sourceLineNo">176</span> String encoderCls = encoder.getClass().getName();<a name="line.176"></a> -<span class="sourceLineNo">177</span> return encoderCls.equals(algorithm.encoderCls);<a name="line.177"></a> -<span class="sourceLineNo">178</span> }<a name="line.178"></a> -<span class="sourceLineNo">179</span><a name="line.179"></a> -<span class="sourceLineNo">180</span> public static DataBlockEncoding getEncodingById(short dataBlockEncodingId) {<a name="line.180"></a> -<span class="sourceLineNo">181</span> return idToEncoding.get(dataBlockEncodingId);<a name="line.181"></a> -<span class="sourceLineNo">182</span> }<a name="line.182"></a> -<span class="sourceLineNo">183</span><a name="line.183"></a> -<span class="sourceLineNo">184</span> protected static DataBlockEncoder createEncoder(String fullyQualifiedClassName){<a name="line.184"></a> -<span class="sourceLineNo">185</span> try {<a name="line.185"></a> -<span class="sourceLineNo">186</span> return (DataBlockEncoder)Class.forName(fullyQualifiedClassName).newInstance();<a name="line.186"></a> -<span class="sourceLineNo">187</span> } catch (InstantiationException e) {<a name="line.187"></a> -<span class="sourceLineNo">188</span> throw new RuntimeException(e);<a name="line.188"></a> -<span class="sourceLineNo">189</span> } catch (IllegalAccessException e) {<a name="line.189"></a> -<span class="sourceLineNo">190</span> throw new RuntimeException(e);<a name="line.190"></a> -<span class="sourceLineNo">191</span> } catch (ClassNotFoundException e) {<a name="line.191"></a> -<span class="sourceLineNo">192</span> throw new IllegalArgumentException(e);<a name="line.192"></a> -<span class="sourceLineNo">193</span> }<a name="line.193"></a> -<span class="sourceLineNo">194</span> }<a name="line.194"></a> -<span class="sourceLineNo">195</span><a name="line.195"></a> -<span class="sourceLineNo">196</span>}<a name="line.196"></a> +<span class="sourceLineNo">111</span><a name="line.111"></a> +<span class="sourceLineNo">112</span> /**<a name="line.112"></a> +<span class="sourceLineNo">113</span> * Writes id bytes to the given array starting from offset.<a name="line.113"></a> +<span class="sourceLineNo">114</span> *<a name="line.114"></a> +<span class="sourceLineNo">115</span> * @param dest output array<a name="line.115"></a> +<span class="sourceLineNo">116</span> * @param offset starting offset of the output array<a name="line.116"></a> +<span class="sourceLineNo">117</span> * @throws IOException<a name="line.117"></a> +<span class="sourceLineNo">118</span> */<a name="line.118"></a> +<span class="sourceLineNo">119</span> public void writeIdInBytes(byte[] dest, int offset) throws IOException {<a name="line.119"></a> +<span class="sourceLineNo">120</span> System.arraycopy(idInBytes, 0, dest, offset, ID_SIZE);<a name="line.120"></a> +<span class="sourceLineNo">121</span> }<a name="line.121"></a> +<span class="sourceLineNo">122</span><a name="line.122"></a> +<span class="sourceLineNo">123</span> /**<a name="line.123"></a> +<span class="sourceLineNo">124</span> * Return new data block encoder for given algorithm type.<a name="line.124"></a> +<span class="sourceLineNo">125</span> * @return data block encoder if algorithm is specified, null if none is<a name="line.125"></a> +<span class="sourceLineNo">126</span> * selected.<a name="line.126"></a> +<span class="sourceLineNo">127</span> */<a name="line.127"></a> +<span class="sourceLineNo">128</span> public DataBlockEncoder getEncoder() {<a name="line.128"></a> +<span class="sourceLineNo">129</span> if (encoder == null && id != 0) {<a name="line.129"></a> +<span class="sourceLineNo">130</span> // lazily create the encoder<a name="line.130"></a> +<span class="sourceLineNo">131</span> encoder = createEncoder(encoderCls);<a name="line.131"></a> +<span class="sourceLineNo">132</span> }<a name="line.132"></a> +<span class="sourceLineNo">133</span> return encoder;<a name="line.133"></a> +<span class="sourceLineNo">134</span> }<a name="line.134"></a> +<span class="sourceLineNo">135</span><a name="line.135"></a> +<span class="sourceLineNo">136</span> /**<a name="line.136"></a> +<span class="sourceLineNo">137</span> * Find and create data block encoder for given id;<a name="line.137"></a> +<span class="sourceLineNo">138</span> * @param encoderId id of data block encoder.<a name="line.138"></a> +<span class="sourceLineNo">139</span> * @return Newly created data block encoder.<a name="line.139"></a> +<span class="sourceLineNo">140</span> */<a name="line.140"></a> +<span class="sourceLineNo">141</span> public static DataBlockEncoder getDataBlockEncoderById(short encoderId) {<a name="line.141"></a> +<span class="sourceLineNo">142</span> if (!idToEncoding.containsKey(encoderId)) {<a name="line.142"></a> +<span class="sourceLineNo">143</span> throw new IllegalArgumentException(String.format(<a name="line.143"></a> +<span class="sourceLineNo">144</span> "There is no data block encoder for given id '%d'",<a name="line.144"></a> +<span class="sourceLineNo">145</span> (int) encoderId));<a name="line.145"></a> +<span class="sourceLineNo">146</span> }<a name="line.146"></a> +<span class="sourceLineNo">147</span><a name="line.147"></a> +<span class="sourceLineNo">148</span> return idToEncoding.get(encoderId).getEncoder();<a name="line.148"></a> +<span class="sourceLineNo">149</span> }<a name="line.149"></a> +<span class="sourceLineNo">150</span><a name="line.150"></a> +<span class="sourceLineNo">151</span> /**<a name="line.151"></a> +<span class="sourceLineNo">152</span> * Find and return the name of data block encoder for the given id.<a name="line.152"></a> +<span class="sourceLineNo">153</span> * @param encoderId id of data block encoder<a name="line.153"></a> +<span class="sourceLineNo">154</span> * @return name, same as used in options in column family<a name="line.154"></a> +<span class="sourceLineNo">155</span> */<a name="line.155"></a> +<span class="sourceLineNo">156</span> public static String getNameFromId(short encoderId) {<a name="line.156"></a> +<span class="sourceLineNo">157</span> return idToEncoding.get(encoderId).toString();<a name="line.157"></a> +<span class="sourceLineNo">158</span> }<a name="line.158"></a> +<span class="sourceLineNo">159</span><a name="line.159"></a> +<span class="sourceLineNo">160</span> /**<a name="line.160"></a> +<span class="sourceLineNo">161</span> * Check if given encoder has this id.<a name="line.161"></a> +<span class="sourceLineNo">162</span> * @param encoder encoder which id will be checked<a name="line.162"></a> +<span class="sourceLineNo">163</span> * @param encoderId id which we except<a name="line.163"></a> +<span class="sourceLineNo">164</span> * @return true if id is right for given encoder, false otherwise<a name="line.164"></a> +<span class="sourceLineNo">165</span> * @exception IllegalArgumentException<a name="line.165"></a> +<span class="sourceLineNo">166</span> * thrown when there is no matching data block encoder<a name="line.166"></a> +<span class="sourceLineNo">167</span> */<a name="line.167"></a> +<span class="sourceLineNo">168</span> public static boolean isCorrectEncoder(DataBlockEncoder encoder,<a name="line.168"></a> +<span class="sourceLineNo">169</span> short encoderId) {<a name="line.169"></a> +<span class="sourceLineNo">170</span> if (!idToEncoding.containsKey(encoderId)) {<a name="line.170"></a> +<span class="sourceLineNo">171</span> throw new IllegalArgumentException(String.format(<a name="line.171"></a> +<span class="sourceLineNo">172</span> "There is no data block encoder for given id '%d'",<a name="line.172"></a> +<span class="sourceLineNo">173</span> (int) encoderId));<a name="line.173"></a> +<span class="sourceLineNo">174</span> }<a name="line.174"></a> +<span class="sourceLineNo">175</span><a name="line.175"></a> +<span class="sourceLineNo">176</span> DataBlockEncoding algorithm = idToEncoding.get(encoderId);<a name="line.176"></a> +<span class="sourceLineNo">177</span> String encoderCls = encoder.getClass().getName();<a name="line.177"></a> +<span class="sourceLineNo">178</span> return encoderCls.equals(algorithm.encoderCls);<a name="line.178"></a> +<span class="sourceLineNo">179</span> }<a name="line.179"></a> +<span class="sourceLineNo">180</span><a name="line.180"></a> +<span class="sourceLineNo">181</span> public static DataBlockEncoding getEncodingById(short dataBlockEncodingId) {<a name="line.181"></a> +<span class="sourceLineNo">182</span> return idToEncoding.get(dataBlockEncodingId);<a name="line.182"></a> +<span class="sourceLineNo">183</span> }<a name="line.183"></a> +<span class="sourceLineNo">184</span><a name="line.184"></a> +<span class="sourceLineNo">185</span> protected static DataBlockEncoder createEncoder(String fullyQualifiedClassName){<a name="line.185"></a> +<span class="sourceLineNo">186</span> try {<a name="line.186"></a> +<span class="sourceLineNo">187</span> return (DataBlockEncoder)Class.forName(fullyQualifiedClassName).newInstance();<a name="line.187"></a> +<span class="sourceLineNo">188</span> } catch (InstantiationException e) {<a name="line.188"></a> +<span class="sourceLineNo">189</span> throw new RuntimeException(e);<a name="line.189"></a> +<span class="sourceLineNo">190</span> } catch (IllegalAccessException e) {<a name="line.190"></a> +<span class="sourceLineNo">191</span> throw new RuntimeException(e);<a name="line.191"></a> +<span class="sourceLineNo">192</span> } catch (ClassNotFoundException e) {<a name="line.192"></a> +<span class="sourceLineNo">193</span> throw new IllegalArgumentException(e);<a name="line.193"></a> +<span class="sourceLineNo">194</span> }<a name="line.194"></a> +<span class="sourceLineNo">195</span> }<a name="line.195"></a> +<span class="sourceLineNo">196</span><a name="line.196"></a> +<span class="sourceLineNo">197</span>}<a name="line.197"></a>
http://git-wip-us.apache.org/repos/asf/hbase-site/blob/45a663dd/devapidocs/src-html/org/apache/hadoop/hbase/io/encoding/DiffKeyDeltaEncoder.DiffCompressionState.html ---------------------------------------------------------------------- diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/io/encoding/DiffKeyDeltaEncoder.DiffCompressionState.html b/devapidocs/src-html/org/apache/hadoop/hbase/io/encoding/DiffKeyDeltaEncoder.DiffCompressionState.html index 54788f6..e372d03 100644 --- a/devapidocs/src-html/org/apache/hadoop/hbase/io/encoding/DiffKeyDeltaEncoder.DiffCompressionState.html +++ b/devapidocs/src-html/org/apache/hadoop/hbase/io/encoding/DiffKeyDeltaEncoder.DiffCompressionState.html @@ -375,167 +375,169 @@ <span class="sourceLineNo">367</span> private int rowLengthWithSize;<a name="line.367"></a> <span class="sourceLineNo">368</span> private long timestamp;<a name="line.368"></a> <span class="sourceLineNo">369</span><a name="line.369"></a> -<span class="sourceLineNo">370</span> public DiffSeekerState(ObjectIntPair<ByteBuffer> tmpPair, boolean includeTags) {<a name="line.370"></a> -<span class="sourceLineNo">371</span> super(tmpPair, includeTags);<a name="line.371"></a> -<span class="sourceLineNo">372</span> }<a name="line.372"></a> -<span class="sourceLineNo">373</span><a name="line.373"></a> -<span class="sourceLineNo">374</span> @Override<a name="line.374"></a> -<span class="sourceLineNo">375</span> protected void copyFromNext(SeekerState that) {<a name="line.375"></a> -<span class="sourceLineNo">376</span> super.copyFromNext(that);<a name="line.376"></a> -<span class="sourceLineNo">377</span> DiffSeekerState other = (DiffSeekerState) that;<a name="line.377"></a> -<span class="sourceLineNo">378</span> rowLengthWithSize = other.rowLengthWithSize;<a name="line.378"></a> -<span class="sourceLineNo">379</span> timestamp = other.timestamp;<a name="line.379"></a> -<span class="sourceLineNo">380</span> }<a name="line.380"></a> -<span class="sourceLineNo">381</span> }<a name="line.381"></a> -<span class="sourceLineNo">382</span><a name="line.382"></a> -<span class="sourceLineNo">383</span> @Override<a name="line.383"></a> -<span class="sourceLineNo">384</span> public EncodedSeeker createSeeker(CellComparator comparator,<a name="line.384"></a> -<span class="sourceLineNo">385</span> HFileBlockDecodingContext decodingCtx) {<a name="line.385"></a> -<span class="sourceLineNo">386</span> return new BufferedEncodedSeeker<DiffSeekerState>(comparator, decodingCtx) {<a name="line.386"></a> -<span class="sourceLineNo">387</span> private byte[] familyNameWithSize;<a name="line.387"></a> -<span class="sourceLineNo">388</span> private static final int TIMESTAMP_WITH_TYPE_LENGTH =<a name="line.388"></a> -<span class="sourceLineNo">389</span> Bytes.SIZEOF_LONG + Bytes.SIZEOF_BYTE;<a name="line.389"></a> -<span class="sourceLineNo">390</span><a name="line.390"></a> -<span class="sourceLineNo">391</span> private void decode(boolean isFirst) {<a name="line.391"></a> -<span class="sourceLineNo">392</span> byte flag = currentBuffer.get();<a name="line.392"></a> -<span class="sourceLineNo">393</span> byte type = 0;<a name="line.393"></a> -<span class="sourceLineNo">394</span> if ((flag & FLAG_SAME_KEY_LENGTH) == 0) {<a name="line.394"></a> -<span class="sourceLineNo">395</span> if (!isFirst) {<a name="line.395"></a> -<span class="sourceLineNo">396</span> type = current.keyBuffer[current.keyLength - Bytes.SIZEOF_BYTE];<a name="line.396"></a> -<span class="sourceLineNo">397</span> }<a name="line.397"></a> -<span class="sourceLineNo">398</span> current.keyLength = ByteBuff.readCompressedInt(currentBuffer);<a name="line.398"></a> -<span class="sourceLineNo">399</span> }<a name="line.399"></a> -<span class="sourceLineNo">400</span> if ((flag & FLAG_SAME_VALUE_LENGTH) == 0) {<a name="line.400"></a> -<span class="sourceLineNo">401</span> current.valueLength = ByteBuff.readCompressedInt(currentBuffer);<a name="line.401"></a> -<span class="sourceLineNo">402</span> }<a name="line.402"></a> -<span class="sourceLineNo">403</span> current.lastCommonPrefix = ByteBuff.readCompressedInt(currentBuffer);<a name="line.403"></a> -<span class="sourceLineNo">404</span><a name="line.404"></a> -<span class="sourceLineNo">405</span> current.ensureSpaceForKey();<a name="line.405"></a> -<span class="sourceLineNo">406</span><a name="line.406"></a> -<span class="sourceLineNo">407</span> if (current.lastCommonPrefix < Bytes.SIZEOF_SHORT) {<a name="line.407"></a> -<span class="sourceLineNo">408</span> // length of row is different, copy everything except family<a name="line.408"></a> -<span class="sourceLineNo">409</span><a name="line.409"></a> -<span class="sourceLineNo">410</span> // copy the row size<a name="line.410"></a> -<span class="sourceLineNo">411</span> currentBuffer.get(current.keyBuffer, current.lastCommonPrefix,<a name="line.411"></a> -<span class="sourceLineNo">412</span> Bytes.SIZEOF_SHORT - current.lastCommonPrefix);<a name="line.412"></a> -<span class="sourceLineNo">413</span> current.rowLengthWithSize = Bytes.toShort(current.keyBuffer, 0) +<a name="line.413"></a> -<span class="sourceLineNo">414</span> Bytes.SIZEOF_SHORT;<a name="line.414"></a> -<span class="sourceLineNo">415</span><a name="line.415"></a> -<span class="sourceLineNo">416</span> // copy the rest of row<a name="line.416"></a> -<span class="sourceLineNo">417</span> currentBuffer.get(current.keyBuffer, Bytes.SIZEOF_SHORT,<a name="line.417"></a> -<span class="sourceLineNo">418</span> current.rowLengthWithSize - Bytes.SIZEOF_SHORT);<a name="line.418"></a> -<span class="sourceLineNo">419</span><a name="line.419"></a> -<span class="sourceLineNo">420</span> // copy the column family<a name="line.420"></a> -<span class="sourceLineNo">421</span> System.arraycopy(familyNameWithSize, 0, current.keyBuffer,<a name="line.421"></a> -<span class="sourceLineNo">422</span> current.rowLengthWithSize, familyNameWithSize.length);<a name="line.422"></a> -<span class="sourceLineNo">423</span><a name="line.423"></a> -<span class="sourceLineNo">424</span> // copy the qualifier<a name="line.424"></a> -<span class="sourceLineNo">425</span> currentBuffer.get(current.keyBuffer,<a name="line.425"></a> -<span class="sourceLineNo">426</span> current.rowLengthWithSize + familyNameWithSize.length,<a name="line.426"></a> -<span class="sourceLineNo">427</span> current.keyLength - current.rowLengthWithSize -<a name="line.427"></a> -<span class="sourceLineNo">428</span> familyNameWithSize.length - TIMESTAMP_WITH_TYPE_LENGTH);<a name="line.428"></a> -<span class="sourceLineNo">429</span> } else if (current.lastCommonPrefix < current.rowLengthWithSize) {<a name="line.429"></a> -<span class="sourceLineNo">430</span> // we have to copy part of row and qualifier,<a name="line.430"></a> -<span class="sourceLineNo">431</span> // but column family is in right place<a name="line.431"></a> -<span class="sourceLineNo">432</span><a name="line.432"></a> -<span class="sourceLineNo">433</span> // before column family (rest of row)<a name="line.433"></a> -<span class="sourceLineNo">434</span> currentBuffer.get(current.keyBuffer, current.lastCommonPrefix,<a name="line.434"></a> -<span class="sourceLineNo">435</span> current.rowLengthWithSize - current.lastCommonPrefix);<a name="line.435"></a> -<span class="sourceLineNo">436</span><a name="line.436"></a> -<span class="sourceLineNo">437</span> // after column family (qualifier)<a name="line.437"></a> -<span class="sourceLineNo">438</span> currentBuffer.get(current.keyBuffer,<a name="line.438"></a> -<span class="sourceLineNo">439</span> current.rowLengthWithSize + familyNameWithSize.length,<a name="line.439"></a> -<span class="sourceLineNo">440</span> current.keyLength - current.rowLengthWithSize -<a name="line.440"></a> -<span class="sourceLineNo">441</span> familyNameWithSize.length - TIMESTAMP_WITH_TYPE_LENGTH);<a name="line.441"></a> -<span class="sourceLineNo">442</span> } else {<a name="line.442"></a> -<span class="sourceLineNo">443</span> // copy just the ending<a name="line.443"></a> -<span class="sourceLineNo">444</span> currentBuffer.get(current.keyBuffer, current.lastCommonPrefix,<a name="line.444"></a> -<span class="sourceLineNo">445</span> current.keyLength - TIMESTAMP_WITH_TYPE_LENGTH -<a name="line.445"></a> -<span class="sourceLineNo">446</span> current.lastCommonPrefix);<a name="line.446"></a> -<span class="sourceLineNo">447</span> }<a name="line.447"></a> -<span class="sourceLineNo">448</span><a name="line.448"></a> -<span class="sourceLineNo">449</span> // timestamp<a name="line.449"></a> -<span class="sourceLineNo">450</span> int pos = current.keyLength - TIMESTAMP_WITH_TYPE_LENGTH;<a name="line.450"></a> -<span class="sourceLineNo">451</span> int timestampFitInBytes = 1 +<a name="line.451"></a> -<span class="sourceLineNo">452</span> ((flag & MASK_TIMESTAMP_LENGTH) >>> SHIFT_TIMESTAMP_LENGTH);<a name="line.452"></a> -<span class="sourceLineNo">453</span> long timestampOrDiff = ByteBuff.readLong(currentBuffer, timestampFitInBytes);<a name="line.453"></a> -<span class="sourceLineNo">454</span> if ((flag & FLAG_TIMESTAMP_SIGN) != 0) {<a name="line.454"></a> -<span class="sourceLineNo">455</span> timestampOrDiff = -timestampOrDiff;<a name="line.455"></a> -<span class="sourceLineNo">456</span> }<a name="line.456"></a> -<span class="sourceLineNo">457</span> if ((flag & FLAG_TIMESTAMP_IS_DIFF) == 0) { // it is timestamp<a name="line.457"></a> -<span class="sourceLineNo">458</span> current.timestamp = timestampOrDiff;<a name="line.458"></a> -<span class="sourceLineNo">459</span> } else { // it is diff<a name="line.459"></a> -<span class="sourceLineNo">460</span> current.timestamp = current.timestamp - timestampOrDiff;<a name="line.460"></a> -<span class="sourceLineNo">461</span> }<a name="line.461"></a> -<span class="sourceLineNo">462</span> Bytes.putLong(current.keyBuffer, pos, current.timestamp);<a name="line.462"></a> -<span class="sourceLineNo">463</span> pos += Bytes.SIZEOF_LONG;<a name="line.463"></a> -<span class="sourceLineNo">464</span><a name="line.464"></a> -<span class="sourceLineNo">465</span> // type<a name="line.465"></a> -<span class="sourceLineNo">466</span> if ((flag & FLAG_SAME_TYPE) == 0) {<a name="line.466"></a> -<span class="sourceLineNo">467</span> currentBuffer.get(current.keyBuffer, pos, Bytes.SIZEOF_BYTE);<a name="line.467"></a> -<span class="sourceLineNo">468</span> } else if ((flag & FLAG_SAME_KEY_LENGTH) == 0) {<a name="line.468"></a> -<span class="sourceLineNo">469</span> current.keyBuffer[pos] = type;<a name="line.469"></a> -<span class="sourceLineNo">470</span> }<a name="line.470"></a> -<span class="sourceLineNo">471</span><a name="line.471"></a> -<span class="sourceLineNo">472</span> current.valueOffset = currentBuffer.position();<a name="line.472"></a> -<span class="sourceLineNo">473</span> currentBuffer.skip(current.valueLength);<a name="line.473"></a> -<span class="sourceLineNo">474</span><a name="line.474"></a> -<span class="sourceLineNo">475</span> if (includesTags()) {<a name="line.475"></a> -<span class="sourceLineNo">476</span> decodeTags();<a name="line.476"></a> -<span class="sourceLineNo">477</span> }<a name="line.477"></a> -<span class="sourceLineNo">478</span> if (includesMvcc()) {<a name="line.478"></a> -<span class="sourceLineNo">479</span> current.memstoreTS = ByteBuff.readVLong(currentBuffer);<a name="line.479"></a> -<span class="sourceLineNo">480</span> } else {<a name="line.480"></a> -<span class="sourceLineNo">481</span> current.memstoreTS = 0;<a name="line.481"></a> -<span class="sourceLineNo">482</span> }<a name="line.482"></a> -<span class="sourceLineNo">483</span> current.nextKvOffset = currentBuffer.position();<a name="line.483"></a> -<span class="sourceLineNo">484</span> }<a name="line.484"></a> -<span class="sourceLineNo">485</span><a name="line.485"></a> -<span class="sourceLineNo">486</span> @Override<a name="line.486"></a> -<span class="sourceLineNo">487</span> protected void decodeFirst() {<a name="line.487"></a> -<span class="sourceLineNo">488</span> currentBuffer.skip(Bytes.SIZEOF_INT);<a name="line.488"></a> -<span class="sourceLineNo">489</span><a name="line.489"></a> -<span class="sourceLineNo">490</span> // read column family<a name="line.490"></a> -<span class="sourceLineNo">491</span> byte familyNameLength = currentBuffer.get();<a name="line.491"></a> -<span class="sourceLineNo">492</span> familyNameWithSize = new byte[familyNameLength + Bytes.SIZEOF_BYTE];<a name="line.492"></a> -<span class="sourceLineNo">493</span> familyNameWithSize[0] = familyNameLength;<a name="line.493"></a> -<span class="sourceLineNo">494</span> currentBuffer.get(familyNameWithSize, Bytes.SIZEOF_BYTE,<a name="line.494"></a> -<span class="sourceLineNo">495</span> familyNameLength);<a name="line.495"></a> -<span class="sourceLineNo">496</span> decode(true);<a name="line.496"></a> -<span class="sourceLineNo">497</span> }<a name="line.497"></a> -<span class="sourceLineNo">498</span><a name="line.498"></a> -<span class="sourceLineNo">499</span> @Override<a name="line.499"></a> -<span class="sourceLineNo">500</span> protected void decodeNext() {<a name="line.500"></a> -<span class="sourceLineNo">501</span> decode(false);<a name="line.501"></a> -<span class="sourceLineNo">502</span> }<a name="line.502"></a> -<span class="sourceLineNo">503</span><a name="line.503"></a> -<span class="sourceLineNo">504</span> @Override<a name="line.504"></a> -<span class="sourceLineNo">505</span> protected DiffSeekerState createSeekerState() {<a name="line.505"></a> -<span class="sourceLineNo">506</span> return new DiffSeekerState(this.tmpPair, this.includesTags());<a name="line.506"></a> -<span class="sourceLineNo">507</span> }<a name="line.507"></a> -<span class="sourceLineNo">508</span> };<a name="line.508"></a> -<span class="sourceLineNo">509</span> }<a name="line.509"></a> -<span class="sourceLineNo">510</span><a name="line.510"></a> -<span class="sourceLineNo">511</span> @Override<a name="line.511"></a> -<span class="sourceLineNo">512</span> protected ByteBuffer internalDecodeKeyValues(DataInputStream source, int allocateHeaderLength,<a name="line.512"></a> -<span class="sourceLineNo">513</span> int skipLastBytes, HFileBlockDefaultDecodingContext decodingCtx) throws IOException {<a name="line.513"></a> -<span class="sourceLineNo">514</span> int decompressedSize = source.readInt();<a name="line.514"></a> -<span class="sourceLineNo">515</span> ByteBuffer buffer = ByteBuffer.allocate(decompressedSize +<a name="line.515"></a> -<span class="sourceLineNo">516</span> allocateHeaderLength);<a name="line.516"></a> -<span class="sourceLineNo">517</span> buffer.position(allocateHeaderLength);<a name="line.517"></a> -<span class="sourceLineNo">518</span> DiffCompressionState state = new DiffCompressionState();<a name="line.518"></a> -<span class="sourceLineNo">519</span> while (source.available() > skipLastBytes) {<a name="line.519"></a> -<span class="sourceLineNo">520</span> uncompressSingleKeyValue(source, buffer, state);<a name="line.520"></a> -<span class="sourceLineNo">521</span> afterDecodingKeyValue(source, buffer, decodingCtx);<a name="line.521"></a> -<span class="sourceLineNo">522</span> }<a name="line.522"></a> -<span class="sourceLineNo">523</span><a name="line.523"></a> -<span class="sourceLineNo">524</span> if (source.available() != skipLastBytes) {<a name="line.524"></a> -<span class="sourceLineNo">525</span> throw new IllegalStateException("Read too much bytes.");<a name="line.525"></a> -<span class="sourceLineNo">526</span> }<a name="line.526"></a> -<span class="sourceLineNo">527</span><a name="line.527"></a> -<span class="sourceLineNo">528</span> return buffer;<a name="line.528"></a> -<span class="sourceLineNo">529</span> }<a name="line.529"></a> -<span class="sourceLineNo">530</span>}<a name="line.530"></a> +<span class="sourceLineNo">370</span> public DiffSeekerState(ObjectIntPair<ByteBuffer> tmpPair,<a name="line.370"></a> +<span class="sourceLineNo">371</span> boolean includeTags, boolean tagsCompressed) {<a name="line.371"></a> +<span class="sourceLineNo">372</span> super(tmpPair, includeTags, tagsCompressed);<a name="line.372"></a> +<span class="sourceLineNo">373</span> }<a name="line.373"></a> +<span class="sourceLineNo">374</span><a name="line.374"></a> +<span class="sourceLineNo">375</span> @Override<a name="line.375"></a> +<span class="sourceLineNo">376</span> protected void copyFromNext(SeekerState that) {<a name="line.376"></a> +<span class="sourceLineNo">377</span> super.copyFromNext(that);<a name="line.377"></a> +<span class="sourceLineNo">378</span> DiffSeekerState other = (DiffSeekerState) that;<a name="line.378"></a> +<span class="sourceLineNo">379</span> rowLengthWithSize = other.rowLengthWithSize;<a name="line.379"></a> +<span class="sourceLineNo">380</span> timestamp = other.timestamp;<a name="line.380"></a> +<span class="sourceLineNo">381</span> }<a name="line.381"></a> +<span class="sourceLineNo">382</span> }<a name="line.382"></a> +<span class="sourceLineNo">383</span><a name="line.383"></a> +<span class="sourceLineNo">384</span> @Override<a name="line.384"></a> +<span class="sourceLineNo">385</span> public EncodedSeeker createSeeker(CellComparator comparator,<a name="line.385"></a> +<span class="sourceLineNo">386</span> HFileBlockDecodingContext decodingCtx) {<a name="line.386"></a> +<span class="sourceLineNo">387</span> return new BufferedEncodedSeeker<DiffSeekerState>(comparator, decodingCtx) {<a name="line.387"></a> +<span class="sourceLineNo">388</span> private byte[] familyNameWithSize;<a name="line.388"></a> +<span class="sourceLineNo">389</span> private static final int TIMESTAMP_WITH_TYPE_LENGTH =<a name="line.389"></a> +<span class="sourceLineNo">390</span> Bytes.SIZEOF_LONG + Bytes.SIZEOF_BYTE;<a name="line.390"></a> +<span class="sourceLineNo">391</span><a name="line.391"></a> +<span class="sourceLineNo">392</span> private void decode(boolean isFirst) {<a name="line.392"></a> +<span class="sourceLineNo">393</span> byte flag = currentBuffer.get();<a name="line.393"></a> +<span class="sourceLineNo">394</span> byte type = 0;<a name="line.394"></a> +<span class="sourceLineNo">395</span> if ((flag & FLAG_SAME_KEY_LENGTH) == 0) {<a name="line.395"></a> +<span class="sourceLineNo">396</span> if (!isFirst) {<a name="line.396"></a> +<span class="sourceLineNo">397</span> type = current.keyBuffer[current.keyLength - Bytes.SIZEOF_BYTE];<a name="line.397"></a> +<span class="sourceLineNo">398</span> }<a name="line.398"></a> +<span class="sourceLineNo">399</span> current.keyLength = ByteBuff.readCompressedInt(currentBuffer);<a name="line.399"></a> +<span class="sourceLineNo">400</span> }<a name="line.400"></a> +<span class="sourceLineNo">401</span> if ((flag & FLAG_SAME_VALUE_LENGTH) == 0) {<a name="line.401"></a> +<span class="sourceLineNo">402</span> current.valueLength = ByteBuff.readCompressedInt(currentBuffer);<a name="line.402"></a> +<span class="sourceLineNo">403</span> }<a name="line.403"></a> +<span class="sourceLineNo">404</span> current.lastCommonPrefix = ByteBuff.readCompressedInt(currentBuffer);<a name="line.404"></a> +<span class="sourceLineNo">405</span><a name="line.405"></a> +<span class="sourceLineNo">406</span> current.ensureSpaceForKey();<a name="line.406"></a> +<span class="sourceLineNo">407</span><a name="line.407"></a> +<span class="sourceLineNo">408</span> if (current.lastCommonPrefix < Bytes.SIZEOF_SHORT) {<a name="line.408"></a> +<span class="sourceLineNo">409</span> // length of row is different, copy everything except family<a name="line.409"></a> +<span class="sourceLineNo">410</span><a name="line.410"></a> +<span class="sourceLineNo">411</span> // copy the row size<a name="line.411"></a> +<span class="sourceLineNo">412</span> currentBuffer.get(current.keyBuffer, current.lastCommonPrefix,<a name="line.412"></a> +<span class="sourceLineNo">413</span> Bytes.SIZEOF_SHORT - current.lastCommonPrefix);<a name="line.413"></a> +<span class="sourceLineNo">414</span> current.rowLengthWithSize = Bytes.toShort(current.keyBuffer, 0) +<a name="line.414"></a> +<span class="sourceLineNo">415</span> Bytes.SIZEOF_SHORT;<a name="line.415"></a> +<span class="sourceLineNo">416</span><a name="line.416"></a> +<span class="sourceLineNo">417</span> // copy the rest of row<a name="line.417"></a> +<span class="sourceLineNo">418</span> currentBuffer.get(current.keyBuffer, Bytes.SIZEOF_SHORT,<a name="line.418"></a> +<span class="sourceLineNo">419</span> current.rowLengthWithSize - Bytes.SIZEOF_SHORT);<a name="line.419"></a> +<span class="sourceLineNo">420</span><a name="line.420"></a> +<span class="sourceLineNo">421</span> // copy the column family<a name="line.421"></a> +<span class="sourceLineNo">422</span> System.arraycopy(familyNameWithSize, 0, current.keyBuffer,<a name="line.422"></a> +<span class="sourceLineNo">423</span> current.rowLengthWithSize, familyNameWithSize.length);<a name="line.423"></a> +<span class="sourceLineNo">424</span><a name="line.424"></a> +<span class="sourceLineNo">425</span> // copy the qualifier<a name="line.425"></a> +<span class="sourceLineNo">426</span> currentBuffer.get(current.keyBuffer,<a name="line.426"></a> +<span class="sourceLineNo">427</span> current.rowLengthWithSize + familyNameWithSize.length,<a name="line.427"></a> +<span class="sourceLineNo">428</span> current.keyLength - current.rowLengthWithSize -<a name="line.428"></a> +<span class="sourceLineNo">429</span> familyNameWithSize.length - TIMESTAMP_WITH_TYPE_LENGTH);<a name="line.429"></a> +<span class="sourceLineNo">430</span> } else if (current.lastCommonPrefix < current.rowLengthWithSize) {<a name="line.430"></a> +<span class="sourceLineNo">431</span> // we have to copy part of row and qualifier,<a name="line.431"></a> +<span class="sourceLineNo">432</span> // but column family is in right place<a name="line.432"></a> +<span class="sourceLineNo">433</span><a name="line.433"></a> +<span class="sourceLineNo">434</span> // before column family (rest of row)<a name="line.434"></a> +<span class="sourceLineNo">435</span> currentBuffer.get(current.keyBuffer, current.lastCommonPrefix,<a name="line.435"></a> +<span class="sourceLineNo">436</span> current.rowLengthWithSize - current.lastCommonPrefix);<a name="line.436"></a> +<span class="sourceLineNo">437</span><a name="line.437"></a> +<span class="sourceLineNo">438</span> // after column family (qualifier)<a name="line.438"></a> +<span class="sourceLineNo">439</span> currentBuffer.get(current.keyBuffer,<a name="line.439"></a> +<span class="sourceLineNo">440</span> current.rowLengthWithSize + familyNameWithSize.length,<a name="line.440"></a> +<span class="sourceLineNo">441</span> current.keyLength - current.rowLengthWithSize -<a name="line.441"></a> +<span class="sourceLineNo">442</span> familyNameWithSize.length - TIMESTAMP_WITH_TYPE_LENGTH);<a name="line.442"></a> +<span class="sourceLineNo">443</span> } else {<a name="line.443"></a> +<span class="sourceLineNo">444</span> // copy just the ending<a name="line.444"></a> +<span class="sourceLineNo">445</span> currentBuffer.get(current.keyBuffer, current.lastCommonPrefix,<a name="line.445"></a> +<span class="sourceLineNo">446</span> current.keyLength - TIMESTAMP_WITH_TYPE_LENGTH -<a name="line.446"></a> +<span class="sourceLineNo">447</span> current.lastCommonPrefix);<a name="line.447"></a> +<span class="sourceLineNo">448</span> }<a name="line.448"></a> +<span class="sourceLineNo">449</span><a name="line.449"></a> +<span class="sourceLineNo">450</span> // timestamp<a name="line.450"></a> +<span class="sourceLineNo">451</span> int pos = current.keyLength - TIMESTAMP_WITH_TYPE_LENGTH;<a name="line.451"></a> +<span class="sourceLineNo">452</span> int timestampFitInBytes = 1 +<a name="line.452"></a> +<span class="sourceLineNo">453</span> ((flag & MASK_TIMESTAMP_LENGTH) >>> SHIFT_TIMESTAMP_LENGTH);<a name="line.453"></a> +<span class="sourceLineNo">454</span> long timestampOrDiff = ByteBuff.readLong(currentBuffer, timestampFitInBytes);<a name="line.454"></a> +<span class="sourceLineNo">455</span> if ((flag & FLAG_TIMESTAMP_SIGN) != 0) {<a name="line.455"></a> +<span class="sourceLineNo">456</span> timestampOrDiff = -timestampOrDiff;<a name="line.456"></a> +<span class="sourceLineNo">457</span> }<a name="line.457"></a> +<span class="sourceLineNo">458</span> if ((flag & FLAG_TIMESTAMP_IS_DIFF) == 0) { // it is timestamp<a name="line.458"></a> +<span class="sourceLineNo">459</span> current.timestamp = timestampOrDiff;<a name="line.459"></a> +<span class="sourceLineNo">460</span> } else { // it is diff<a name="line.460"></a> +<span class="sourceLineNo">461</span> current.timestamp = current.timestamp - timestampOrDiff;<a name="line.461"></a> +<span class="sourceLineNo">462</span> }<a name="line.462"></a> +<span class="sourceLineNo">463</span> Bytes.putLong(current.keyBuffer, pos, current.timestamp);<a name="line.463"></a> +<span class="sourceLineNo">464</span> pos += Bytes.SIZEOF_LONG;<a name="line.464"></a> +<span class="sourceLineNo">465</span><a name="line.465"></a> +<span class="sourceLineNo">466</span> // type<a name="line.466"></a> +<span class="sourceLineNo">467</span> if ((flag & FLAG_SAME_TYPE) == 0) {<a name="line.467"></a> +<span class="sourceLineNo">468</span> currentBuffer.get(current.keyBuffer, pos, Bytes.SIZEOF_BYTE);<a name="line.468"></a> +<span class="sourceLineNo">469</span> } else if ((flag & FLAG_SAME_KEY_LENGTH) == 0) {<a name="line.469"></a> +<span class="sourceLineNo">470</span> current.keyBuffer[pos] = type;<a name="line.470"></a> +<span class="sourceLineNo">471</span> }<a name="line.471"></a> +<span class="sourceLineNo">472</span><a name="line.472"></a> +<span class="sourceLineNo">473</span> current.valueOffset = currentBuffer.position();<a name="line.473"></a> +<span class="sourceLineNo">474</span> currentBuffer.skip(current.valueLength);<a name="line.474"></a> +<span class="sourceLineNo">475</span><a name="line.475"></a> +<span class="sourceLineNo">476</span> if (includesTags()) {<a name="line.476"></a> +<span class="sourceLineNo">477</span> decodeTags();<a name="line.477"></a> +<span class="sourceLineNo">478</span> }<a name="line.478"></a> +<span class="sourceLineNo">479</span> if (includesMvcc()) {<a name="line.479"></a> +<span class="sourceLineNo">480</span> current.memstoreTS = ByteBuff.readVLong(currentBuffer);<a name="line.480"></a> +<span class="sourceLineNo">481</span> } else {<a name="line.481"></a> +<span class="sourceLineNo">482</span> current.memstoreTS = 0;<a name="line.482"></a> +<span class="sourceLineNo">483</span> }<a name="line.483"></a> +<span class="sourceLineNo">484</span> current.nextKvOffset = currentBuffer.position();<a name="line.484"></a> +<span class="sourceLineNo">485</span> }<a name="line.485"></a> +<span class="sourceLineNo">486</span><a name="line.486"></a> +<span class="sourceLineNo">487</span> @Override<a name="line.487"></a> +<span class="sourceLineNo">488</span> protected void decodeFirst() {<a name="line.488"></a> +<span class="sourceLineNo">489</span> currentBuffer.skip(Bytes.SIZEOF_INT);<a name="line.489"></a> +<span class="sourceLineNo">490</span><a name="line.490"></a> +<span class="sourceLineNo">491</span> // read column family<a name="line.491"></a> +<span class="sourceLineNo">492</span> byte familyNameLength = currentBuffer.get();<a name="line.492"></a> +<span class="sourceLineNo">493</span> familyNameWithSize = new byte[familyNameLength + Bytes.SIZEOF_BYTE];<a name="line.493"></a> +<span class="sourceLineNo">494</span> familyNameWithSize[0] = familyNameLength;<a name="line.494"></a> +<span class="sourceLineNo">495</span> currentBuffer.get(familyNameWithSize, Bytes.SIZEOF_BYTE,<a name="line.495"></a> +<span class="sourceLineNo">496</span> familyNameLength);<a name="line.496"></a> +<span class="sourceLineNo">497</span> decode(true);<a name="line.497"></a> +<span class="sourceLineNo">498</span> }<a name="line.498"></a> +<span class="sourceLineNo">499</span><a name="line.499"></a> +<span class="sourceLineNo">500</span> @Override<a name="line.500"></a> +<span class="sourceLineNo">501</span> protected void decodeNext() {<a name="line.501"></a> +<span class="sourceLineNo">502</span> decode(false);<a name="line.502"></a> +<span class="sourceLineNo">503</span> }<a name="line.503"></a> +<span class="sourceLineNo">504</span><a name="line.504"></a> +<span class="sourceLineNo">505</span> @Override<a name="line.505"></a> +<span class="sourceLineNo">506</span> protected DiffSeekerState createSeekerState() {<a name="line.506"></a> +<span class="sourceLineNo">507</span> return new DiffSeekerState(this.tmpPair, this.includesTags(),<a name="line.507"></a> +<span class="sourceLineNo">508</span> this.tagsCompressed());<a name="line.508"></a> +<span class="sourceLineNo">509</span> }<a name="line.509"></a> +<span class="sourceLineNo">510</span> };<a name="line.510"></a> +<span class="sourceLineNo">511</span> }<a name="line.511"></a> +<span class="sourceLineNo">512</span><a name="line.512"></a> +<span class="sourceLineNo">513</span> @Override<a name="line.513"></a> +<span class="sourceLineNo">514</span> protected ByteBuffer internalDecodeKeyValues(DataInputStream source, int allocateHeaderLength,<a name="line.514"></a> +<span class="sourceLineNo">515</span> int skipLastBytes, HFileBlockDefaultDecodingContext decodingCtx) throws IOException {<a name="line.515"></a> +<span class="sourceLineNo">516</span> int decompressedSize = source.readInt();<a name="line.516"></a> +<span class="sourceLineNo">517</span> ByteBuffer buffer = ByteBuffer.allocate(decompressedSize +<a name="line.517"></a> +<span class="sourceLineNo">518</span> allocateHeaderLength);<a name="line.518"></a> +<span class="sourceLineNo">519</span> buffer.position(allocateHeaderLength);<a name="line.519"></a> +<span class="sourceLineNo">520</span> DiffCompressionState state = new DiffCompressionState();<a name="line.520"></a> +<span class="sourceLineNo">521</span> while (source.available() > skipLastBytes) {<a name="line.521"></a> +<span class="sourceLineNo">522</span> uncompressSingleKeyValue(source, buffer, state);<a name="line.522"></a> +<span class="sourceLineNo">523</span> afterDecodingKeyValue(source, buffer, decodingCtx);<a name="line.523"></a> +<span class="sourceLineNo">524</span> }<a name="line.524"></a> +<span class="sourceLineNo">525</span><a name="line.525"></a> +<span class="sourceLineNo">526</span> if (source.available() != skipLastBytes) {<a name="line.526"></a> +<span class="sourceLineNo">527</span> throw new IllegalStateException("Read too much bytes.");<a name="line.527"></a> +<span class="sourceLineNo">528</span> }<a name="line.528"></a> +<span class="sourceLineNo">529</span><a name="line.529"></a> +<span class="sourceLineNo">530</span> return buffer;<a name="line.530"></a> +<span class="sourceLineNo">531</span> }<a name="line.531"></a> +<span class="sourceLineNo">532</span>}<a name="line.532"></a>
