http://git-wip-us.apache.org/repos/asf/hbase-site/blob/22cff34f/apidocs/src-html/org/apache/hadoop/hbase/client/Result.html ---------------------------------------------------------------------- diff --git a/apidocs/src-html/org/apache/hadoop/hbase/client/Result.html b/apidocs/src-html/org/apache/hadoop/hbase/client/Result.html index 1a6b0c2..c93b1f5 100644 --- a/apidocs/src-html/org/apache/hadoop/hbase/client/Result.html +++ b/apidocs/src-html/org/apache/hadoop/hbase/client/Result.html @@ -32,650 +32,650 @@ <span class="sourceLineNo">024</span>import java.nio.ByteBuffer;<a name="line.24"></a> <span class="sourceLineNo">025</span>import java.util.ArrayList;<a name="line.25"></a> <span class="sourceLineNo">026</span>import java.util.Arrays;<a name="line.26"></a> -<span class="sourceLineNo">027</span>import java.util.Comparator;<a name="line.27"></a> -<span class="sourceLineNo">028</span>import java.util.List;<a name="line.28"></a> -<span class="sourceLineNo">029</span>import java.util.Map;<a name="line.29"></a> -<span class="sourceLineNo">030</span>import java.util.NavigableMap;<a name="line.30"></a> -<span class="sourceLineNo">031</span>import java.util.TreeMap;<a name="line.31"></a> -<span class="sourceLineNo">032</span><a name="line.32"></a> -<span class="sourceLineNo">033</span>import org.apache.hadoop.hbase.Cell;<a name="line.33"></a> -<span class="sourceLineNo">034</span>import org.apache.hadoop.hbase.CellComparator;<a name="line.34"></a> -<span class="sourceLineNo">035</span>import org.apache.hadoop.hbase.CellScannable;<a name="line.35"></a> -<span class="sourceLineNo">036</span>import org.apache.hadoop.hbase.CellScanner;<a name="line.36"></a> -<span class="sourceLineNo">037</span>import org.apache.hadoop.hbase.CellUtil;<a name="line.37"></a> -<span class="sourceLineNo">038</span>import org.apache.hadoop.hbase.HConstants;<a name="line.38"></a> -<span class="sourceLineNo">039</span>import org.apache.hadoop.hbase.KeyValue;<a name="line.39"></a> -<span class="sourceLineNo">040</span>import org.apache.hadoop.hbase.KeyValueUtil;<a name="line.40"></a> -<span class="sourceLineNo">041</span>import org.apache.hadoop.hbase.classification.InterfaceAudience;<a name="line.41"></a> -<span class="sourceLineNo">042</span>import org.apache.hadoop.hbase.classification.InterfaceStability;<a name="line.42"></a> -<span class="sourceLineNo">043</span>import org.apache.hadoop.hbase.util.Bytes;<a name="line.43"></a> -<span class="sourceLineNo">044</span><a name="line.44"></a> -<span class="sourceLineNo">045</span>/**<a name="line.45"></a> -<span class="sourceLineNo">046</span> * Single row result of a {@link Get} or {@link Scan} query.<p><a name="line.46"></a> -<span class="sourceLineNo">047</span> *<a name="line.47"></a> -<span class="sourceLineNo">048</span> * This class is <b>NOT THREAD SAFE</b>.<p><a name="line.48"></a> +<span class="sourceLineNo">027</span>import java.util.Collections;<a name="line.27"></a> +<span class="sourceLineNo">028</span>import java.util.Comparator;<a name="line.28"></a> +<span class="sourceLineNo">029</span>import java.util.Iterator;<a name="line.29"></a> +<span class="sourceLineNo">030</span>import java.util.List;<a name="line.30"></a> +<span class="sourceLineNo">031</span>import java.util.Map;<a name="line.31"></a> +<span class="sourceLineNo">032</span>import java.util.NavigableMap;<a name="line.32"></a> +<span class="sourceLineNo">033</span>import java.util.TreeMap;<a name="line.33"></a> +<span class="sourceLineNo">034</span><a name="line.34"></a> +<span class="sourceLineNo">035</span>import org.apache.hadoop.hbase.Cell;<a name="line.35"></a> +<span class="sourceLineNo">036</span>import org.apache.hadoop.hbase.CellComparator;<a name="line.36"></a> +<span class="sourceLineNo">037</span>import org.apache.hadoop.hbase.CellScannable;<a name="line.37"></a> +<span class="sourceLineNo">038</span>import org.apache.hadoop.hbase.CellScanner;<a name="line.38"></a> +<span class="sourceLineNo">039</span>import org.apache.hadoop.hbase.CellUtil;<a name="line.39"></a> +<span class="sourceLineNo">040</span>import org.apache.hadoop.hbase.HConstants;<a name="line.40"></a> +<span class="sourceLineNo">041</span>import org.apache.hadoop.hbase.KeyValue;<a name="line.41"></a> +<span class="sourceLineNo">042</span>import org.apache.hadoop.hbase.KeyValueUtil;<a name="line.42"></a> +<span class="sourceLineNo">043</span>import org.apache.hadoop.hbase.classification.InterfaceAudience;<a name="line.43"></a> +<span class="sourceLineNo">044</span>import org.apache.hadoop.hbase.classification.InterfaceStability;<a name="line.44"></a> +<span class="sourceLineNo">045</span>import org.apache.hadoop.hbase.util.Bytes;<a name="line.45"></a> +<span class="sourceLineNo">046</span><a name="line.46"></a> +<span class="sourceLineNo">047</span>/**<a name="line.47"></a> +<span class="sourceLineNo">048</span> * Single row result of a {@link Get} or {@link Scan} query.<p><a name="line.48"></a> <span class="sourceLineNo">049</span> *<a name="line.49"></a> -<span class="sourceLineNo">050</span> * Convenience methods are available that return various {@link Map}<a name="line.50"></a> -<span class="sourceLineNo">051</span> * structures and values directly.<p><a name="line.51"></a> -<span class="sourceLineNo">052</span> *<a name="line.52"></a> -<span class="sourceLineNo">053</span> * To get a complete mapping of all cells in the Result, which can include<a name="line.53"></a> -<span class="sourceLineNo">054</span> * multiple families and multiple versions, use {@link #getMap()}.<p><a name="line.54"></a> -<span class="sourceLineNo">055</span> *<a name="line.55"></a> -<span class="sourceLineNo">056</span> * To get a mapping of each family to its columns (qualifiers and values),<a name="line.56"></a> -<span class="sourceLineNo">057</span> * including only the latest version of each, use {@link #getNoVersionMap()}.<a name="line.57"></a> -<span class="sourceLineNo">058</span> *<a name="line.58"></a> -<span class="sourceLineNo">059</span> * To get a mapping of qualifiers to latest values for an individual family use<a name="line.59"></a> -<span class="sourceLineNo">060</span> * {@link #getFamilyMap(byte[])}.<p><a name="line.60"></a> -<span class="sourceLineNo">061</span> *<a name="line.61"></a> -<span class="sourceLineNo">062</span> * To get the latest value for a specific family and qualifier use<a name="line.62"></a> -<span class="sourceLineNo">063</span> * {@link #getValue(byte[], byte[])}.<a name="line.63"></a> -<span class="sourceLineNo">064</span> *<a name="line.64"></a> -<span class="sourceLineNo">065</span> * A Result is backed by an array of {@link Cell} objects, each representing<a name="line.65"></a> -<span class="sourceLineNo">066</span> * an HBase cell defined by the row, family, qualifier, timestamp, and value.<p><a name="line.66"></a> -<span class="sourceLineNo">067</span> *<a name="line.67"></a> -<span class="sourceLineNo">068</span> * The underlying {@link Cell} objects can be accessed through the method {@link #listCells()}.<a name="line.68"></a> -<span class="sourceLineNo">069</span> * This will create a List from the internal Cell []. Better is to exploit the fact that<a name="line.69"></a> -<span class="sourceLineNo">070</span> * a new Result instance is a primed {@link CellScanner}; just call {@link #advance()} and<a name="line.70"></a> -<span class="sourceLineNo">071</span> * {@link #current()} to iterate over Cells as you would any {@link CellScanner}.<a name="line.71"></a> -<span class="sourceLineNo">072</span> * Call {@link #cellScanner()} to reset should you need to iterate the same Result over again<a name="line.72"></a> -<span class="sourceLineNo">073</span> * ({@link CellScanner}s are one-shot).<a name="line.73"></a> -<span class="sourceLineNo">074</span> *<a name="line.74"></a> -<span class="sourceLineNo">075</span> * If you need to overwrite a Result with another Result instance -- as in the old 'mapred'<a name="line.75"></a> -<span class="sourceLineNo">076</span> * RecordReader next invocations -- then create an empty Result with the null constructor and<a name="line.76"></a> -<span class="sourceLineNo">077</span> * in then use {@link #copyFrom(Result)}<a name="line.77"></a> -<span class="sourceLineNo">078</span> */<a name="line.78"></a> -<span class="sourceLineNo">079</span>@InterfaceAudience.Public<a name="line.79"></a> -<span class="sourceLineNo">080</span>@InterfaceStability.Stable<a name="line.80"></a> -<span class="sourceLineNo">081</span>public class Result implements CellScannable, CellScanner {<a name="line.81"></a> -<span class="sourceLineNo">082</span> private Cell[] cells;<a name="line.82"></a> -<span class="sourceLineNo">083</span> private Boolean exists; // if the query was just to check existence.<a name="line.83"></a> -<span class="sourceLineNo">084</span> private boolean stale = false;<a name="line.84"></a> -<span class="sourceLineNo">085</span><a name="line.85"></a> -<span class="sourceLineNo">086</span> /**<a name="line.86"></a> -<span class="sourceLineNo">087</span> * See {@link #mayHaveMoreCellsInRow()}. And please notice that, The client side implementation<a name="line.87"></a> -<span class="sourceLineNo">088</span> * should also check for row key change to determine if a Result is the last one for a row.<a name="line.88"></a> -<span class="sourceLineNo">089</span> */<a name="line.89"></a> -<span class="sourceLineNo">090</span> private boolean mayHaveMoreCellsInRow = false;<a name="line.90"></a> -<span class="sourceLineNo">091</span> // We're not using java serialization. Transient here is just a marker to say<a name="line.91"></a> -<span class="sourceLineNo">092</span> // that this is where we cache row if we're ever asked for it.<a name="line.92"></a> -<span class="sourceLineNo">093</span> private transient byte [] row = null;<a name="line.93"></a> -<span class="sourceLineNo">094</span> // Ditto for familyMap. It can be composed on fly from passed in kvs.<a name="line.94"></a> -<span class="sourceLineNo">095</span> private transient NavigableMap<byte[], NavigableMap<byte[], NavigableMap<Long, byte[]>>><a name="line.95"></a> -<span class="sourceLineNo">096</span> familyMap = null;<a name="line.96"></a> -<span class="sourceLineNo">097</span><a name="line.97"></a> -<span class="sourceLineNo">098</span> private static ThreadLocal<byte[]> localBuffer = new ThreadLocal<byte[]>();<a name="line.98"></a> -<span class="sourceLineNo">099</span> private static final int PAD_WIDTH = 128;<a name="line.99"></a> -<span class="sourceLineNo">100</span> public static final Result EMPTY_RESULT = new Result(true);<a name="line.100"></a> -<span class="sourceLineNo">101</span><a name="line.101"></a> -<span class="sourceLineNo">102</span> private final static int INITIAL_CELLSCANNER_INDEX = -1;<a name="line.102"></a> -<span class="sourceLineNo">103</span><a name="line.103"></a> -<span class="sourceLineNo">104</span> /**<a name="line.104"></a> -<span class="sourceLineNo">105</span> * Index for where we are when Result is acting as a {@link CellScanner}.<a name="line.105"></a> -<span class="sourceLineNo">106</span> */<a name="line.106"></a> -<span class="sourceLineNo">107</span> private int cellScannerIndex = INITIAL_CELLSCANNER_INDEX;<a name="line.107"></a> -<span class="sourceLineNo">108</span> private RegionLoadStats stats;<a name="line.108"></a> -<span class="sourceLineNo">109</span><a name="line.109"></a> -<span class="sourceLineNo">110</span> private final boolean readonly;<a name="line.110"></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> * Creates an empty Result w/ no KeyValue payload; returns null if you call {@link #rawCells()}.<a name="line.113"></a> -<span class="sourceLineNo">114</span> * Use this to represent no results if {@code null} won't do or in old 'mapred' as opposed<a name="line.114"></a> -<span class="sourceLineNo">115</span> * to 'mapreduce' package MapReduce where you need to overwrite a Result instance with a<a name="line.115"></a> -<span class="sourceLineNo">116</span> * {@link #copyFrom(Result)} call.<a name="line.116"></a> -<span class="sourceLineNo">117</span> */<a name="line.117"></a> -<span class="sourceLineNo">118</span> public Result() {<a name="line.118"></a> -<span class="sourceLineNo">119</span> this(false);<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> * Allows to construct special purpose immutable Result objects,<a name="line.123"></a> -<span class="sourceLineNo">124</span> * such as EMPTY_RESULT.<a name="line.124"></a> -<span class="sourceLineNo">125</span> * @param readonly whether this Result instance is readonly<a name="line.125"></a> -<span class="sourceLineNo">126</span> */<a name="line.126"></a> -<span class="sourceLineNo">127</span> private Result(boolean readonly) {<a name="line.127"></a> -<span class="sourceLineNo">128</span> this.readonly = readonly;<a name="line.128"></a> -<span class="sourceLineNo">129</span> }<a name="line.129"></a> -<span class="sourceLineNo">130</span><a name="line.130"></a> -<span class="sourceLineNo">131</span> /**<a name="line.131"></a> -<span class="sourceLineNo">132</span> * Instantiate a Result with the specified List of KeyValues.<a name="line.132"></a> -<span class="sourceLineNo">133</span> * <br><strong>Note:</strong> You must ensure that the keyvalues are already sorted.<a name="line.133"></a> -<span class="sourceLineNo">134</span> * @param cells List of cells<a name="line.134"></a> -<span class="sourceLineNo">135</span> */<a name="line.135"></a> -<span class="sourceLineNo">136</span> public static Result create(List<Cell> cells) {<a name="line.136"></a> -<span class="sourceLineNo">137</span> return create(cells, null);<a name="line.137"></a> -<span class="sourceLineNo">138</span> }<a name="line.138"></a> -<span class="sourceLineNo">139</span><a name="line.139"></a> -<span class="sourceLineNo">140</span> public static Result create(List<Cell> cells, Boolean exists) {<a name="line.140"></a> -<span class="sourceLineNo">141</span> return create(cells, exists, false);<a name="line.141"></a> -<span class="sourceLineNo">142</span> }<a name="line.142"></a> -<span class="sourceLineNo">143</span><a name="line.143"></a> -<span class="sourceLineNo">144</span> public static Result create(List<Cell> cells, Boolean exists, boolean stale) {<a name="line.144"></a> -<span class="sourceLineNo">145</span> return create(cells, exists, stale, false);<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> public static Result create(List<Cell> cells, Boolean exists, boolean stale, boolean partial) {<a name="line.148"></a> -<span class="sourceLineNo">149</span> if (exists != null){<a name="line.149"></a> -<span class="sourceLineNo">150</span> return new Result(null, exists, stale, partial);<a name="line.150"></a> -<span class="sourceLineNo">151</span> }<a name="line.151"></a> -<span class="sourceLineNo">152</span> return new Result(cells.toArray(new Cell[cells.size()]), null, stale, partial);<a name="line.152"></a> -<span class="sourceLineNo">153</span> }<a name="line.153"></a> -<span class="sourceLineNo">154</span><a name="line.154"></a> -<span class="sourceLineNo">155</span> /**<a name="line.155"></a> -<span class="sourceLineNo">156</span> * Instantiate a Result with the specified array of KeyValues.<a name="line.156"></a> -<span class="sourceLineNo">157</span> * <br><strong>Note:</strong> You must ensure that the keyvalues are already sorted.<a name="line.157"></a> -<span class="sourceLineNo">158</span> * @param cells array of cells<a name="line.158"></a> -<span class="sourceLineNo">159</span> */<a name="line.159"></a> -<span class="sourceLineNo">160</span> public static Result create(Cell[] cells) {<a name="line.160"></a> -<span class="sourceLineNo">161</span> return create(cells, null, false);<a name="line.161"></a> -<span class="sourceLineNo">162</span> }<a name="line.162"></a> -<span class="sourceLineNo">163</span><a name="line.163"></a> -<span class="sourceLineNo">164</span> public static Result create(Cell[] cells, Boolean exists, boolean stale) {<a name="line.164"></a> -<span class="sourceLineNo">165</span> return create(cells, exists, stale, false);<a name="line.165"></a> -<span class="sourceLineNo">166</span> }<a name="line.166"></a> -<span class="sourceLineNo">167</span><a name="line.167"></a> -<span class="sourceLineNo">168</span> public static Result create(Cell[] cells, Boolean exists, boolean stale,<a name="line.168"></a> -<span class="sourceLineNo">169</span> boolean mayHaveMoreCellsInRow) {<a name="line.169"></a> -<span class="sourceLineNo">170</span> if (exists != null) {<a name="line.170"></a> -<span class="sourceLineNo">171</span> return new Result(null, exists, stale, mayHaveMoreCellsInRow);<a name="line.171"></a> -<span class="sourceLineNo">172</span> }<a name="line.172"></a> -<span class="sourceLineNo">173</span> return new Result(cells, null, stale, mayHaveMoreCellsInRow);<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> /** Private ctor. Use {@link #create(Cell[])}. */<a name="line.176"></a> -<span class="sourceLineNo">177</span> private Result(Cell[] cells, Boolean exists, boolean stale, boolean mayHaveMoreCellsInRow) {<a name="line.177"></a> -<span class="sourceLineNo">178</span> this.cells = cells;<a name="line.178"></a> -<span class="sourceLineNo">179</span> this.exists = exists;<a name="line.179"></a> -<span class="sourceLineNo">180</span> this.stale = stale;<a name="line.180"></a> -<span class="sourceLineNo">181</span> this.mayHaveMoreCellsInRow = mayHaveMoreCellsInRow;<a name="line.181"></a> -<span class="sourceLineNo">182</span> this.readonly = false;<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> /**<a name="line.185"></a> -<span class="sourceLineNo">186</span> * Method for retrieving the row key that corresponds to<a name="line.186"></a> -<span class="sourceLineNo">187</span> * the row from which this Result was created.<a name="line.187"></a> -<span class="sourceLineNo">188</span> * @return row<a name="line.188"></a> -<span class="sourceLineNo">189</span> */<a name="line.189"></a> -<span class="sourceLineNo">190</span> public byte [] getRow() {<a name="line.190"></a> -<span class="sourceLineNo">191</span> if (this.row == null) {<a name="line.191"></a> -<span class="sourceLineNo">192</span> this.row = (this.cells == null || this.cells.length == 0) ?<a name="line.192"></a> -<span class="sourceLineNo">193</span> null :<a name="line.193"></a> -<span class="sourceLineNo">194</span> CellUtil.cloneRow(this.cells[0]);<a name="line.194"></a> -<span class="sourceLineNo">195</span> }<a name="line.195"></a> -<span class="sourceLineNo">196</span> return this.row;<a name="line.196"></a> -<span class="sourceLineNo">197</span> }<a name="line.197"></a> -<span class="sourceLineNo">198</span><a name="line.198"></a> -<span class="sourceLineNo">199</span> /**<a name="line.199"></a> -<span class="sourceLineNo">200</span> * Return the array of Cells backing this Result instance.<a name="line.200"></a> -<span class="sourceLineNo">201</span> *<a name="line.201"></a> -<span class="sourceLineNo">202</span> * The array is sorted from smallest -&gt; largest using the<a name="line.202"></a> -<span class="sourceLineNo">203</span> * {@link CellComparator#COMPARATOR}.<a name="line.203"></a> -<span class="sourceLineNo">204</span> *<a name="line.204"></a> -<span class="sourceLineNo">205</span> * The array only contains what your Get or Scan specifies and no more.<a name="line.205"></a> -<span class="sourceLineNo">206</span> * For example if you request column "A" 1 version you will have at most 1<a name="line.206"></a> -<span class="sourceLineNo">207</span> * Cell in the array. If you request column "A" with 2 version you will<a name="line.207"></a> -<span class="sourceLineNo">208</span> * have at most 2 Cells, with the first one being the newer timestamp and<a name="line.208"></a> -<span class="sourceLineNo">209</span> * the second being the older timestamp (this is the sort order defined by<a name="line.209"></a> -<span class="sourceLineNo">210</span> * {@link CellComparator#COMPARATOR}). If columns don't exist, they won't be<a name="line.210"></a> -<span class="sourceLineNo">211</span> * present in the result. Therefore if you ask for 1 version all columns,<a name="line.211"></a> -<span class="sourceLineNo">212</span> * it is safe to iterate over this array and expect to see 1 Cell for<a name="line.212"></a> -<span class="sourceLineNo">213</span> * each column and no more.<a name="line.213"></a> -<span class="sourceLineNo">214</span> *<a name="line.214"></a> -<span class="sourceLineNo">215</span> * This API is faster than using getFamilyMap() and getMap()<a name="line.215"></a> +<span class="sourceLineNo">050</span> * This class is <b>NOT THREAD SAFE</b>.<p><a name="line.50"></a> +<span class="sourceLineNo">051</span> *<a name="line.51"></a> +<span class="sourceLineNo">052</span> * Convenience methods are available that return various {@link Map}<a name="line.52"></a> +<span class="sourceLineNo">053</span> * structures and values directly.<p><a name="line.53"></a> +<span class="sourceLineNo">054</span> *<a name="line.54"></a> +<span class="sourceLineNo">055</span> * To get a complete mapping of all cells in the Result, which can include<a name="line.55"></a> +<span class="sourceLineNo">056</span> * multiple families and multiple versions, use {@link #getMap()}.<p><a name="line.56"></a> +<span class="sourceLineNo">057</span> *<a name="line.57"></a> +<span class="sourceLineNo">058</span> * To get a mapping of each family to its columns (qualifiers and values),<a name="line.58"></a> +<span class="sourceLineNo">059</span> * including only the latest version of each, use {@link #getNoVersionMap()}.<a name="line.59"></a> +<span class="sourceLineNo">060</span> *<a name="line.60"></a> +<span class="sourceLineNo">061</span> * To get a mapping of qualifiers to latest values for an individual family use<a name="line.61"></a> +<span class="sourceLineNo">062</span> * {@link #getFamilyMap(byte[])}.<p><a name="line.62"></a> +<span class="sourceLineNo">063</span> *<a name="line.63"></a> +<span class="sourceLineNo">064</span> * To get the latest value for a specific family and qualifier use<a name="line.64"></a> +<span class="sourceLineNo">065</span> * {@link #getValue(byte[], byte[])}.<a name="line.65"></a> +<span class="sourceLineNo">066</span> *<a name="line.66"></a> +<span class="sourceLineNo">067</span> * A Result is backed by an array of {@link Cell} objects, each representing<a name="line.67"></a> +<span class="sourceLineNo">068</span> * an HBase cell defined by the row, family, qualifier, timestamp, and value.<p><a name="line.68"></a> +<span class="sourceLineNo">069</span> *<a name="line.69"></a> +<span class="sourceLineNo">070</span> * The underlying {@link Cell} objects can be accessed through the method {@link #listCells()}.<a name="line.70"></a> +<span class="sourceLineNo">071</span> * This will create a List from the internal Cell []. Better is to exploit the fact that<a name="line.71"></a> +<span class="sourceLineNo">072</span> * a new Result instance is a primed {@link CellScanner}; just call {@link #advance()} and<a name="line.72"></a> +<span class="sourceLineNo">073</span> * {@link #current()} to iterate over Cells as you would any {@link CellScanner}.<a name="line.73"></a> +<span class="sourceLineNo">074</span> * Call {@link #cellScanner()} to reset should you need to iterate the same Result over again<a name="line.74"></a> +<span class="sourceLineNo">075</span> * ({@link CellScanner}s are one-shot).<a name="line.75"></a> +<span class="sourceLineNo">076</span> *<a name="line.76"></a> +<span class="sourceLineNo">077</span> * If you need to overwrite a Result with another Result instance -- as in the old 'mapred'<a name="line.77"></a> +<span class="sourceLineNo">078</span> * RecordReader next invocations -- then create an empty Result with the null constructor and<a name="line.78"></a> +<span class="sourceLineNo">079</span> * in then use {@link #copyFrom(Result)}<a name="line.79"></a> +<span class="sourceLineNo">080</span> */<a name="line.80"></a> +<span class="sourceLineNo">081</span>@InterfaceAudience.Public<a name="line.81"></a> +<span class="sourceLineNo">082</span>@InterfaceStability.Stable<a name="line.82"></a> +<span class="sourceLineNo">083</span>public class Result implements CellScannable, CellScanner {<a name="line.83"></a> +<span class="sourceLineNo">084</span> private Cell[] cells;<a name="line.84"></a> +<span class="sourceLineNo">085</span> private Boolean exists; // if the query was just to check existence.<a name="line.85"></a> +<span class="sourceLineNo">086</span> private boolean stale = false;<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> * See {@link #mayHaveMoreCellsInRow()}.<a name="line.89"></a> +<span class="sourceLineNo">090</span> */<a name="line.90"></a> +<span class="sourceLineNo">091</span> private boolean mayHaveMoreCellsInRow = false;<a name="line.91"></a> +<span class="sourceLineNo">092</span> // We're not using java serialization. Transient here is just a marker to say<a name="line.92"></a> +<span class="sourceLineNo">093</span> // that this is where we cache row if we're ever asked for it.<a name="line.93"></a> +<span class="sourceLineNo">094</span> private transient byte [] row = null;<a name="line.94"></a> +<span class="sourceLineNo">095</span> // Ditto for familyMap. It can be composed on fly from passed in kvs.<a name="line.95"></a> +<span class="sourceLineNo">096</span> private transient NavigableMap<byte[], NavigableMap<byte[], NavigableMap<Long, byte[]>>><a name="line.96"></a> +<span class="sourceLineNo">097</span> familyMap = null;<a name="line.97"></a> +<span class="sourceLineNo">098</span><a name="line.98"></a> +<span class="sourceLineNo">099</span> private static ThreadLocal<byte[]> localBuffer = new ThreadLocal<>();<a name="line.99"></a> +<span class="sourceLineNo">100</span> private static final int PAD_WIDTH = 128;<a name="line.100"></a> +<span class="sourceLineNo">101</span> public static final Result EMPTY_RESULT = new Result(true);<a name="line.101"></a> +<span class="sourceLineNo">102</span><a name="line.102"></a> +<span class="sourceLineNo">103</span> private final static int INITIAL_CELLSCANNER_INDEX = -1;<a name="line.103"></a> +<span class="sourceLineNo">104</span><a name="line.104"></a> +<span class="sourceLineNo">105</span> /**<a name="line.105"></a> +<span class="sourceLineNo">106</span> * Index for where we are when Result is acting as a {@link CellScanner}.<a name="line.106"></a> +<span class="sourceLineNo">107</span> */<a name="line.107"></a> +<span class="sourceLineNo">108</span> private int cellScannerIndex = INITIAL_CELLSCANNER_INDEX;<a name="line.108"></a> +<span class="sourceLineNo">109</span> private RegionLoadStats stats;<a name="line.109"></a> +<span class="sourceLineNo">110</span><a name="line.110"></a> +<span class="sourceLineNo">111</span> private final boolean readonly;<a name="line.111"></a> +<span class="sourceLineNo">112</span><a name="line.112"></a> +<span class="sourceLineNo">113</span> /**<a name="line.113"></a> +<span class="sourceLineNo">114</span> * Creates an empty Result w/ no KeyValue payload; returns null if you call {@link #rawCells()}.<a name="line.114"></a> +<span class="sourceLineNo">115</span> * Use this to represent no results if {@code null} won't do or in old 'mapred' as opposed<a name="line.115"></a> +<span class="sourceLineNo">116</span> * to 'mapreduce' package MapReduce where you need to overwrite a Result instance with a<a name="line.116"></a> +<span class="sourceLineNo">117</span> * {@link #copyFrom(Result)} call.<a name="line.117"></a> +<span class="sourceLineNo">118</span> */<a name="line.118"></a> +<span class="sourceLineNo">119</span> public Result() {<a name="line.119"></a> +<span class="sourceLineNo">120</span> this(false);<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> * Allows to construct special purpose immutable Result objects,<a name="line.124"></a> +<span class="sourceLineNo">125</span> * such as EMPTY_RESULT.<a name="line.125"></a> +<span class="sourceLineNo">126</span> * @param readonly whether this Result instance is readonly<a name="line.126"></a> +<span class="sourceLineNo">127</span> */<a name="line.127"></a> +<span class="sourceLineNo">128</span> private Result(boolean readonly) {<a name="line.128"></a> +<span class="sourceLineNo">129</span> this.readonly = readonly;<a name="line.129"></a> +<span class="sourceLineNo">130</span> }<a name="line.130"></a> +<span class="sourceLineNo">131</span><a name="line.131"></a> +<span class="sourceLineNo">132</span> /**<a name="line.132"></a> +<span class="sourceLineNo">133</span> * Instantiate a Result with the specified List of KeyValues.<a name="line.133"></a> +<span class="sourceLineNo">134</span> * <br><strong>Note:</strong> You must ensure that the keyvalues are already sorted.<a name="line.134"></a> +<span class="sourceLineNo">135</span> * @param cells List of cells<a name="line.135"></a> +<span class="sourceLineNo">136</span> */<a name="line.136"></a> +<span class="sourceLineNo">137</span> public static Result create(List<Cell> cells) {<a name="line.137"></a> +<span class="sourceLineNo">138</span> return create(cells, null);<a name="line.138"></a> +<span class="sourceLineNo">139</span> }<a name="line.139"></a> +<span class="sourceLineNo">140</span><a name="line.140"></a> +<span class="sourceLineNo">141</span> public static Result create(List<Cell> cells, Boolean exists) {<a name="line.141"></a> +<span class="sourceLineNo">142</span> return create(cells, exists, false);<a name="line.142"></a> +<span class="sourceLineNo">143</span> }<a name="line.143"></a> +<span class="sourceLineNo">144</span><a name="line.144"></a> +<span class="sourceLineNo">145</span> public static Result create(List<Cell> cells, Boolean exists, boolean stale) {<a name="line.145"></a> +<span class="sourceLineNo">146</span> return create(cells, exists, stale, false);<a name="line.146"></a> +<span class="sourceLineNo">147</span> }<a name="line.147"></a> +<span class="sourceLineNo">148</span><a name="line.148"></a> +<span class="sourceLineNo">149</span> public static Result create(List<Cell> cells, Boolean exists, boolean stale,<a name="line.149"></a> +<span class="sourceLineNo">150</span> boolean mayHaveMoreCellsInRow) {<a name="line.150"></a> +<span class="sourceLineNo">151</span> if (exists != null){<a name="line.151"></a> +<span class="sourceLineNo">152</span> return new Result(null, exists, stale, mayHaveMoreCellsInRow);<a name="line.152"></a> +<span class="sourceLineNo">153</span> }<a name="line.153"></a> +<span class="sourceLineNo">154</span> return new Result(cells.toArray(new Cell[cells.size()]), null, stale, mayHaveMoreCellsInRow);<a name="line.154"></a> +<span class="sourceLineNo">155</span> }<a name="line.155"></a> +<span class="sourceLineNo">156</span><a name="line.156"></a> +<span class="sourceLineNo">157</span> /**<a name="line.157"></a> +<span class="sourceLineNo">158</span> * Instantiate a Result with the specified array of KeyValues.<a name="line.158"></a> +<span class="sourceLineNo">159</span> * <br><strong>Note:</strong> You must ensure that the keyvalues are already sorted.<a name="line.159"></a> +<span class="sourceLineNo">160</span> * @param cells array of cells<a name="line.160"></a> +<span class="sourceLineNo">161</span> */<a name="line.161"></a> +<span class="sourceLineNo">162</span> public static Result create(Cell[] cells) {<a name="line.162"></a> +<span class="sourceLineNo">163</span> return create(cells, null, false);<a name="line.163"></a> +<span class="sourceLineNo">164</span> }<a name="line.164"></a> +<span class="sourceLineNo">165</span><a name="line.165"></a> +<span class="sourceLineNo">166</span> public static Result create(Cell[] cells, Boolean exists, boolean stale) {<a name="line.166"></a> +<span class="sourceLineNo">167</span> return create(cells, exists, stale, false);<a name="line.167"></a> +<span class="sourceLineNo">168</span> }<a name="line.168"></a> +<span class="sourceLineNo">169</span><a name="line.169"></a> +<span class="sourceLineNo">170</span> public static Result create(Cell[] cells, Boolean exists, boolean stale,<a name="line.170"></a> +<span class="sourceLineNo">171</span> boolean mayHaveMoreCellsInRow) {<a name="line.171"></a> +<span class="sourceLineNo">172</span> if (exists != null) {<a name="line.172"></a> +<span class="sourceLineNo">173</span> return new Result(null, exists, stale, mayHaveMoreCellsInRow);<a name="line.173"></a> +<span class="sourceLineNo">174</span> }<a name="line.174"></a> +<span class="sourceLineNo">175</span> return new Result(cells, null, stale, mayHaveMoreCellsInRow);<a name="line.175"></a> +<span class="sourceLineNo">176</span> }<a name="line.176"></a> +<span class="sourceLineNo">177</span><a name="line.177"></a> +<span class="sourceLineNo">178</span> /** Private ctor. Use {@link #create(Cell[])}. */<a name="line.178"></a> +<span class="sourceLineNo">179</span> private Result(Cell[] cells, Boolean exists, boolean stale, boolean mayHaveMoreCellsInRow) {<a name="line.179"></a> +<span class="sourceLineNo">180</span> this.cells = cells;<a name="line.180"></a> +<span class="sourceLineNo">181</span> this.exists = exists;<a name="line.181"></a> +<span class="sourceLineNo">182</span> this.stale = stale;<a name="line.182"></a> +<span class="sourceLineNo">183</span> this.mayHaveMoreCellsInRow = mayHaveMoreCellsInRow;<a name="line.183"></a> +<span class="sourceLineNo">184</span> this.readonly = false;<a name="line.184"></a> +<span class="sourceLineNo">185</span> }<a name="line.185"></a> +<span class="sourceLineNo">186</span><a name="line.186"></a> +<span class="sourceLineNo">187</span> /**<a name="line.187"></a> +<span class="sourceLineNo">188</span> * Method for retrieving the row key that corresponds to<a name="line.188"></a> +<span class="sourceLineNo">189</span> * the row from which this Result was created.<a name="line.189"></a> +<span class="sourceLineNo">190</span> * @return row<a name="line.190"></a> +<span class="sourceLineNo">191</span> */<a name="line.191"></a> +<span class="sourceLineNo">192</span> public byte [] getRow() {<a name="line.192"></a> +<span class="sourceLineNo">193</span> if (this.row == null) {<a name="line.193"></a> +<span class="sourceLineNo">194</span> this.row = (this.cells == null || this.cells.length == 0) ?<a name="line.194"></a> +<span class="sourceLineNo">195</span> null :<a name="line.195"></a> +<span class="sourceLineNo">196</span> CellUtil.cloneRow(this.cells[0]);<a name="line.196"></a> +<span class="sourceLineNo">197</span> }<a name="line.197"></a> +<span class="sourceLineNo">198</span> return this.row;<a name="line.198"></a> +<span class="sourceLineNo">199</span> }<a name="line.199"></a> +<span class="sourceLineNo">200</span><a name="line.200"></a> +<span class="sourceLineNo">201</span> /**<a name="line.201"></a> +<span class="sourceLineNo">202</span> * Return the array of Cells backing this Result instance.<a name="line.202"></a> +<span class="sourceLineNo">203</span> *<a name="line.203"></a> +<span class="sourceLineNo">204</span> * The array is sorted from smallest -&gt; largest using the<a name="line.204"></a> +<span class="sourceLineNo">205</span> * {@link CellComparator#COMPARATOR}.<a name="line.205"></a> +<span class="sourceLineNo">206</span> *<a name="line.206"></a> +<span class="sourceLineNo">207</span> * The array only contains what your Get or Scan specifies and no more.<a name="line.207"></a> +<span class="sourceLineNo">208</span> * For example if you request column "A" 1 version you will have at most 1<a name="line.208"></a> +<span class="sourceLineNo">209</span> * Cell in the array. If you request column "A" with 2 version you will<a name="line.209"></a> +<span class="sourceLineNo">210</span> * have at most 2 Cells, with the first one being the newer timestamp and<a name="line.210"></a> +<span class="sourceLineNo">211</span> * the second being the older timestamp (this is the sort order defined by<a name="line.211"></a> +<span class="sourceLineNo">212</span> * {@link CellComparator#COMPARATOR}). If columns don't exist, they won't be<a name="line.212"></a> +<span class="sourceLineNo">213</span> * present in the result. Therefore if you ask for 1 version all columns,<a name="line.213"></a> +<span class="sourceLineNo">214</span> * it is safe to iterate over this array and expect to see 1 Cell for<a name="line.214"></a> +<span class="sourceLineNo">215</span> * each column and no more.<a name="line.215"></a> <span class="sourceLineNo">216</span> *<a name="line.216"></a> -<span class="sourceLineNo">217</span> * @return array of Cells; can be null if nothing in the result<a name="line.217"></a> -<span class="sourceLineNo">218</span> */<a name="line.218"></a> -<span class="sourceLineNo">219</span> public Cell[] rawCells() {<a name="line.219"></a> -<span class="sourceLineNo">220</span> return cells;<a name="line.220"></a> -<span class="sourceLineNo">221</span> }<a name="line.221"></a> -<span class="sourceLineNo">222</span><a name="line.222"></a> -<span class="sourceLineNo">223</span> /**<a name="line.223"></a> -<span class="sourceLineNo">224</span> * Create a sorted list of the Cell's in this result.<a name="line.224"></a> -<span class="sourceLineNo">225</span> *<a name="line.225"></a> -<span class="sourceLineNo">226</span> * Since HBase 0.20.5 this is equivalent to raw().<a name="line.226"></a> +<span class="sourceLineNo">217</span> * This API is faster than using getFamilyMap() and getMap()<a name="line.217"></a> +<span class="sourceLineNo">218</span> *<a name="line.218"></a> +<span class="sourceLineNo">219</span> * @return array of Cells; can be null if nothing in the result<a name="line.219"></a> +<span class="sourceLineNo">220</span> */<a name="line.220"></a> +<span class="sourceLineNo">221</span> public Cell[] rawCells() {<a name="line.221"></a> +<span class="sourceLineNo">222</span> return cells;<a name="line.222"></a> +<span class="sourceLineNo">223</span> }<a name="line.223"></a> +<span class="sourceLineNo">224</span><a name="line.224"></a> +<span class="sourceLineNo">225</span> /**<a name="line.225"></a> +<span class="sourceLineNo">226</span> * Create a sorted list of the Cell's in this result.<a name="line.226"></a> <span class="sourceLineNo">227</span> *<a name="line.227"></a> -<span class="sourceLineNo">228</span> * @return sorted List of Cells; can be null if no cells in the result<a name="line.228"></a> -<span class="sourceLineNo">229</span> */<a name="line.229"></a> -<span class="sourceLineNo">230</span> public List<Cell> listCells() {<a name="line.230"></a> -<span class="sourceLineNo">231</span> return isEmpty()? null: Arrays.asList(rawCells());<a name="line.231"></a> -<span class="sourceLineNo">232</span> }<a name="line.232"></a> -<span class="sourceLineNo">233</span><a name="line.233"></a> -<span class="sourceLineNo">234</span> /**<a name="line.234"></a> -<span class="sourceLineNo">235</span> * Return the Cells for the specific column. The Cells are sorted in<a name="line.235"></a> -<span class="sourceLineNo">236</span> * the {@link CellComparator#COMPARATOR} order. That implies the first entry in<a name="line.236"></a> -<span class="sourceLineNo">237</span> * the list is the most recent column. If the query (Scan or Get) only<a name="line.237"></a> -<span class="sourceLineNo">238</span> * requested 1 version the list will contain at most 1 entry. If the column<a name="line.238"></a> -<span class="sourceLineNo">239</span> * did not exist in the result set (either the column does not exist<a name="line.239"></a> -<span class="sourceLineNo">240</span> * or the column was not selected in the query) the list will be empty.<a name="line.240"></a> -<span class="sourceLineNo">241</span> *<a name="line.241"></a> -<span class="sourceLineNo">242</span> * Also see getColumnLatest which returns just a Cell<a name="line.242"></a> +<span class="sourceLineNo">228</span> * Since HBase 0.20.5 this is equivalent to raw().<a name="line.228"></a> +<span class="sourceLineNo">229</span> *<a name="line.229"></a> +<span class="sourceLineNo">230</span> * @return sorted List of Cells; can be null if no cells in the result<a name="line.230"></a> +<span class="sourceLineNo">231</span> */<a name="line.231"></a> +<span class="sourceLineNo">232</span> public List<Cell> listCells() {<a name="line.232"></a> +<span class="sourceLineNo">233</span> return isEmpty()? null: Arrays.asList(rawCells());<a name="line.233"></a> +<span class="sourceLineNo">234</span> }<a name="line.234"></a> +<span class="sourceLineNo">235</span><a name="line.235"></a> +<span class="sourceLineNo">236</span> /**<a name="line.236"></a> +<span class="sourceLineNo">237</span> * Return the Cells for the specific column. The Cells are sorted in<a name="line.237"></a> +<span class="sourceLineNo">238</span> * the {@link CellComparator#COMPARATOR} order. That implies the first entry in<a name="line.238"></a> +<span class="sourceLineNo">239</span> * the list is the most recent column. If the query (Scan or Get) only<a name="line.239"></a> +<span class="sourceLineNo">240</span> * requested 1 version the list will contain at most 1 entry. If the column<a name="line.240"></a> +<span class="sourceLineNo">241</span> * did not exist in the result set (either the column does not exist<a name="line.241"></a> +<span class="sourceLineNo">242</span> * or the column was not selected in the query) the list will be empty.<a name="line.242"></a> <span class="sourceLineNo">243</span> *<a name="line.243"></a> -<span class="sourceLineNo">244</span> * @param family the family<a name="line.244"></a> -<span class="sourceLineNo">245</span> * @param qualifier<a name="line.245"></a> -<span class="sourceLineNo">246</span> * @return a list of Cells for this column or empty list if the column<a name="line.246"></a> -<span class="sourceLineNo">247</span> * did not exist in the result set<a name="line.247"></a> -<span class="sourceLineNo">248</span> */<a name="line.248"></a> -<span class="sourceLineNo">249</span> public List<Cell> getColumnCells(byte [] family, byte [] qualifier) {<a name="line.249"></a> -<span class="sourceLineNo">250</span> List<Cell> result = new ArrayList<Cell>();<a name="line.250"></a> -<span class="sourceLineNo">251</span><a name="line.251"></a> -<span class="sourceLineNo">252</span> Cell [] kvs = rawCells();<a name="line.252"></a> +<span class="sourceLineNo">244</span> * Also see getColumnLatest which returns just a Cell<a name="line.244"></a> +<span class="sourceLineNo">245</span> *<a name="line.245"></a> +<span class="sourceLineNo">246</span> * @param family the family<a name="line.246"></a> +<span class="sourceLineNo">247</span> * @param qualifier<a name="line.247"></a> +<span class="sourceLineNo">248</span> * @return a list of Cells for this column or empty list if the column<a name="line.248"></a> +<span class="sourceLineNo">249</span> * did not exist in the result set<a name="line.249"></a> +<span class="sourceLineNo">250</span> */<a name="line.250"></a> +<span class="sourceLineNo">251</span> public List<Cell> getColumnCells(byte [] family, byte [] qualifier) {<a name="line.251"></a> +<span class="sourceLineNo">252</span> List<Cell> result = new ArrayList<>();<a name="line.252"></a> <span class="sourceLineNo">253</span><a name="line.253"></a> -<span class="sourceLineNo">254</span> if (kvs == null || kvs.length == 0) {<a name="line.254"></a> -<span class="sourceLineNo">255</span> return result;<a name="line.255"></a> -<span class="sourceLineNo">256</span> }<a name="line.256"></a> -<span class="sourceLineNo">257</span> int pos = binarySearch(kvs, family, qualifier);<a name="line.257"></a> -<span class="sourceLineNo">258</span> if (pos == -1) {<a name="line.258"></a> -<span class="sourceLineNo">259</span> return result; // cant find it<a name="line.259"></a> -<span class="sourceLineNo">260</span> }<a name="line.260"></a> -<span class="sourceLineNo">261</span><a name="line.261"></a> -<span class="sourceLineNo">262</span> for (int i = pos; i < kvs.length; i++) {<a name="line.262"></a> -<span class="sourceLineNo">263</span> if (CellUtil.matchingColumn(kvs[i], family,qualifier)) {<a name="line.263"></a> -<span class="sourceLineNo">264</span> result.add(kvs[i]);<a name="line.264"></a> -<span class="sourceLineNo">265</span> } else {<a name="line.265"></a> -<span class="sourceLineNo">266</span> break;<a name="line.266"></a> -<span class="sourceLineNo">267</span> }<a name="line.267"></a> -<span class="sourceLineNo">268</span> }<a name="line.268"></a> -<span class="sourceLineNo">269</span><a name="line.269"></a> -<span class="sourceLineNo">270</span> return result;<a name="line.270"></a> -<span class="sourceLineNo">271</span> }<a name="line.271"></a> -<span class="sourceLineNo">272</span><a name="line.272"></a> -<span class="sourceLineNo">273</span> private byte[] notNullBytes(final byte[] bytes) {<a name="line.273"></a> -<span class="sourceLineNo">274</span> if (bytes == null) {<a name="line.274"></a> -<span class="sourceLineNo">275</span> return HConstants.EMPTY_BYTE_ARRAY;<a name="line.275"></a> -<span class="sourceLineNo">276</span> } else {<a name="line.276"></a> -<span class="sourceLineNo">277</span> return bytes;<a name="line.277"></a> -<span class="sourceLineNo">278</span> }<a name="line.278"></a> -<span class="sourceLineNo">279</span> }<a name="line.279"></a> -<span class="sourceLineNo">280</span><a name="line.280"></a> -<span class="sourceLineNo">281</span> protected int binarySearch(final Cell [] kvs,<a name="line.281"></a> -<span class="sourceLineNo">282</span> final byte [] family,<a name="line.282"></a> -<span class="sourceLineNo">283</span> final byte [] qualifier) {<a name="line.283"></a> -<span class="sourceLineNo">284</span> byte[] familyNotNull = notNullBytes(family);<a name="line.284"></a> -<span class="sourceLineNo">285</span> byte[] qualifierNotNull = notNullBytes(qualifier);<a name="line.285"></a> -<span class="sourceLineNo">286</span> Cell searchTerm =<a name="line.286"></a> -<span class="sourceLineNo">287</span> CellUtil.createFirstOnRow(kvs[0].getRowArray(),<a name="line.287"></a> -<span class="sourceLineNo">288</span> kvs[0].getRowOffset(), kvs[0].getRowLength(),<a name="line.288"></a> -<span class="sourceLineNo">289</span> familyNotNull, 0, (byte)familyNotNull.length,<a name="line.289"></a> -<span class="sourceLineNo">290</span> qualifierNotNull, 0, qualifierNotNull.length);<a name="line.290"></a> -<span class="sourceLineNo">291</span><a name="line.291"></a> -<span class="sourceLineNo">292</span> // pos === ( -(insertion point) - 1)<a name="line.292"></a> -<span class="sourceLineNo">293</span> int pos = Arrays.binarySearch(kvs, searchTerm, CellComparator.COMPARATOR);<a name="line.293"></a> -<span class="sourceLineNo">294</span> // never will exact match<a name="line.294"></a> -<span class="sourceLineNo">295</span> if (pos < 0) {<a name="line.295"></a> -<span class="sourceLineNo">296</span> pos = (pos+1) * -1;<a name="line.296"></a> -<span class="sourceLineNo">297</span> // pos is now insertion point<a name="line.297"></a> -<span class="sourceLineNo">298</span> }<a name="line.298"></a> -<span class="sourceLineNo">299</span> if (pos == kvs.length) {<a name="line.299"></a> -<span class="sourceLineNo">300</span> return -1; // doesn't exist<a name="line.300"></a> -<span class="sourceLineNo">301</span> }<a name="line.301"></a> -<span class="sourceLineNo">302</span> return pos;<a name="line.302"></a> -<span class="sourceLineNo">303</span> }<a name="line.303"></a> -<span class="sourceLineNo">304</span><a name="line.304"></a> -<span class="sourceLineNo">305</span> /**<a name="line.305"></a> -<span class="sourceLineNo">306</span> * Searches for the latest value for the specified column.<a name="line.306"></a> -<span class="sourceLineNo">307</span> *<a name="line.307"></a> -<span class="sourceLineNo">308</span> * @param kvs the array to search<a name="line.308"></a> -<span class="sourceLineNo">309</span> * @param family family name<a name="line.309"></a> -<span class="sourceLineNo">310</span> * @param foffset family offset<a name="line.310"></a> -<span class="sourceLineNo">311</span> * @param flength family length<a name="line.311"></a> -<span class="sourceLineNo">312</span> * @param qualifier column qualifier<a name="line.312"></a> -<span class="sourceLineNo">313</span> * @param qoffset qualifier offset<a name="line.313"></a> -<span class="sourceLineNo">314</span> * @param qlength qualifier length<a name="line.314"></a> -<span class="sourceLineNo">315</span> *<a name="line.315"></a> -<span class="sourceLineNo">316</span> * @return the index where the value was found, or -1 otherwise<a name="line.316"></a> -<span class="sourceLineNo">317</span> */<a name="line.317"></a> -<span class="sourceLineNo">318</span> protected int binarySearch(final Cell [] kvs,<a name="line.318"></a> -<span class="sourceLineNo">319</span> final byte [] family, final int foffset, final int flength,<a name="line.319"></a> -<span class="sourceLineNo">320</span> final byte [] qualifier, final int qoffset, final int qlength) {<a name="line.320"></a> -<span class="sourceLineNo">321</span><a name="line.321"></a> -<span class="sourceLineNo">322</span> double keyValueSize = (double)<a name="line.322"></a> -<span class="sourceLineNo">323</span> KeyValue.getKeyValueDataStructureSize(kvs[0].getRowLength(), flength, qlength, 0);<a name="line.323"></a> -<span class="sourceLineNo">324</span><a name="line.324"></a> -<span class="sourceLineNo">325</span> byte[] buffer = localBuffer.get();<a name="line.325"></a> -<span class="sourceLineNo">326</span> if (buffer == null || keyValueSize > buffer.length) {<a name="line.326"></a> -<span class="sourceLineNo">327</span> // pad to the smallest multiple of the pad width<a name="line.327"></a> -<span class="sourceLineNo">328</span> buffer = new byte[(int) Math.ceil(keyValueSize / PAD_WIDTH) * PAD_WIDTH];<a name="line.328"></a> -<span class="sourceLineNo">329</span> localBuffer.set(buffer);<a name="line.329"></a> -<span class="sourceLineNo">330</span> }<a name="line.330"></a> -<span class="sourceLineNo">331</span><a name="line.331"></a> -<span class="sourceLineNo">332</span> Cell searchTerm = KeyValueUtil.createFirstOnRow(buffer, 0,<a name="line.332"></a> -<span class="sourceLineNo">333</span> kvs[0].getRowArray(), kvs[0].getRowOffset(), kvs[0].getRowLength(),<a name="line.333"></a> -<span class="sourceLineNo">334</span> family, foffset, flength,<a name="line.334"></a> -<span class="sourceLineNo">335</span> qualifier, qoffset, qlength);<a name="line.335"></a> -<span class="sourceLineNo">336</span><a name="line.336"></a> -<span class="sourceLineNo">337</span> // pos === ( -(insertion point) - 1)<a name="line.337"></a> -<span class="sourceLineNo">338</span> int pos = Arrays.binarySearch(kvs, searchTerm, CellComparator.COMPARATOR);<a name="line.338"></a> -<span class="sourceLineNo">339</span> // never will exact match<a name="line.339"></a> -<span class="sourceLineNo">340</span> if (pos < 0) {<a name="line.340"></a> -<span class="sourceLineNo">341</span> pos = (pos+1) * -1;<a name="line.341"></a> -<span class="sourceLineNo">342</span> // pos is now insertion point<a name="line.342"></a> -<span class="sourceLineNo">343</span> }<a name="line.343"></a> -<span class="sourceLineNo">344</span> if (pos == kvs.length) {<a name="line.344"></a> -<span class="sourceLineNo">345</span> return -1; // doesn't exist<a name="line.345"></a> -<span class="sourceLineNo">346</span> }<a name="line.346"></a> -<span class="sourceLineNo">347</span> return pos;<a name="line.347"></a> -<span class="sourceLineNo">348</span> }<a name="line.348"></a> -<span class="sourceLineNo">349</span><a name="line.349"></a> -<span class="sourceLineNo">350</span> /**<a name="line.350"></a> -<span class="sourceLineNo">351</span> * The Cell for the most recent timestamp for a given column.<a name="line.351"></a> -<span class="sourceLineNo">352</span> *<a name="line.352"></a> -<span class="sourceLineNo">353</span> * @param family<a name="line.353"></a> -<span class="sourceLineNo">354</span> * @param qualifier<a name="line.354"></a> -<span class="sourceLineNo">355</span> *<a name="line.355"></a> -<span class="sourceLineNo">356</span> * @return the Cell for the column, or null if no value exists in the row or none have been<a name="line.356"></a> -<span class="sourceLineNo">357</span> * selected in the query (Get/Scan)<a name="line.357"></a> -<span class="sourceLineNo">358</span> */<a name="line.358"></a> -<span class="sourceLineNo">359</span> public Cell getColumnLatestCell(byte [] family, byte [] qualifier) {<a name="line.359"></a> -<span class="sourceLineNo">360</span> Cell [] kvs = rawCells(); // side effect possibly.<a name="line.360"></a> -<span class="sourceLineNo">361</span> if (kvs == null || kvs.length == 0) {<a name="line.361"></a> -<span class="sourceLineNo">362</span> return null;<a name="line.362"></a> -<span class="sourceLineNo">363</span> }<a name="line.363"></a> -<span class="sourceLineNo">364</span> int pos = binarySearch(kvs, family, qualifier);<a name="line.364"></a> -<span class="sourceLineNo">365</span> if (pos == -1) {<a name="line.365"></a> -<span class="sourceLineNo">366</span> return null;<a name="line.366"></a> -<span class="sourceLineNo">367</span> }<a name="line.367"></a> -<span class="sourceLineNo">368</span> if (CellUtil.matchingColumn(kvs[pos], family, qualifier)) {<a name="line.368"></a> -<span class="sourceLineNo">369</span> return kvs[pos];<a name="line.369"></a> -<span class="sourceLineNo">370</span> }<a name="line.370"></a> -<span class="sourceLineNo">371</span> return null;<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> /**<a name="line.374"></a> -<span class="sourceLineNo">375</span> * The Cell for the most recent timestamp for a given column.<a name="line.375"></a> -<span class="sourceLineNo">376</span> *<a name="line.376"></a> -<span class="sourceLineNo">377</span> * @param family family name<a name="line.377"></a> -<span class="sourceLineNo">378</span> * @param foffset family offset<a name="line.378"></a> -<span class="sourceLineNo">379</span> * @param flength family length<a name="line.379"></a> -<span class="sourceLineNo">380</span> * @param qualifier column qualifier<a name="line.380"></a> -<span class="sourceLineNo">381</span> * @param qoffset qualifier offset<a name="line.381"></a> -<span class="sourceLineNo">382</span> * @param qlength qualifier length<a name="line.382"></a> -<span class="sourceLineNo">383</span> *<a name="line.383"></a> -<span class="sourceLineNo">384</span> * @return the Cell for the column, or null if no value exists in the row or none have been<a name="line.384"></a> -<span class="sourceLineNo">385</span> * selected in the query (Get/Scan)<a name="line.385"></a> -<span class="sourceLineNo">386</span> */<a name="line.386"></a> -<span class="sourceLineNo">387</span> public Cell getColumnLatestCell(byte [] family, int foffset, int flength,<a name="line.387"></a> -<span class="sourceLineNo">388</span> byte [] qualifier, int qoffset, int qlength) {<a name="line.388"></a> -<span class="sourceLineNo">389</span><a name="line.389"></a> -<span class="sourceLineNo">390</span> Cell [] kvs = rawCells(); // side effect possibly.<a name="line.390"></a> -<span class="sourceLineNo">391</span> if (kvs == null || kvs.length == 0) {<a name="line.391"></a> -<span class="sourceLineNo">392</span> return null;<a name="line.392"></a> -<span class="sourceLineNo">393</span> }<a name="line.393"></a> -<span class="sourceLineNo">394</span> int pos = binarySearch(kvs, family, foffset, flength, qualifier, qoffset, qlength);<a name="line.394"></a> -<span class="sourceLineNo">395</span> if (pos == -1) {<a name="line.395"></a> -<span class="sourceLineNo">396</span> return null;<a name="line.396"></a> -<span class="sourceLineNo">397</span> }<a name="line.397"></a> -<span class="sourceLineNo">398</span> if (CellUtil.matchingColumn(kvs[pos], family, foffset, flength, qualifier, qoffset, qlength)) {<a name="line.398"></a> -<span class="sourceLineNo">399</span> return kvs[pos];<a name="line.399"></a> -<span class="sourceLineNo">400</span> }<a name="line.400"></a> -<span class="sourceLineNo">401</span> return null;<a name="line.401"></a> -<span class="sourceLineNo">402</span> }<a name="line.402"></a> -<span class="sourceLineNo">403</span><a name="line.403"></a> -<span class="sourceLineNo">404</span> /**<a name="line.404"></a> -<span class="sourceLineNo">405</span> * Get the latest version of the specified column.<a name="line.405"></a> -<span class="sourceLineNo">406</span> * Note: this call clones the value content of the hosting Cell. See<a name="line.406"></a> -<span class="sourceLineNo">407</span> * {@link #getValueAsByteBuffer(byte[], byte[])}, etc., or {@link #listCells()} if you would<a name="line.407"></a> -<span class="sourceLineNo">408</span> * avoid the cloning.<a name="line.408"></a> -<span class="sourceLineNo">409</span> * @param family family name<a name="line.409"></a> -<span class="sourceLineNo">410</span> * @param qualifier column qualifier<a name="line.410"></a> -<span class="sourceLineNo">411</span> * @return value of latest version of column, null if none found<a name="line.411"></a> -<span class="sourceLineNo">412</span> */<a name="line.412"></a> -<span class="sourceLineNo">413</span> public byte[] getValue(byte [] family, byte [] qualifier) {<a name="line.413"></a> -<span class="sourceLineNo">414</span> Cell kv = getColumnLatestCell(family, qualifier);<a name="line.414"></a> -<span class="sourceLineNo">415</span> if (kv == null) {<a name="line.415"></a> -<span class="sourceLineNo">416</span> return null;<a name="line.416"></a> -<span class="sourceLineNo">417</span> }<a name="line.417"></a> -<span class="sourceLineNo">418</span> return CellUtil.cloneValue(kv);<a name="line.418"></a> -<span class="sourceLineNo">419</span> }<a name="line.419"></a> -<span class="sourceLineNo">420</span><a name="line.420"></a> -<span class="sourceLineNo">421</span> /**<a name="line.421"></a> -<span class="sourceLineNo">422</span> * Returns the value wrapped in a new <code>ByteBuffer</code>.<a name="line.422"></a> -<span class="sourceLineNo">423</span> *<a name="line.423"></a> -<span class="sourceLineNo">424</span> * @param family family name<a name="line.424"></a> -<span class="sourceLineNo">425</span> * @param qualifier column qualifier<a name="line.425"></a> -<span class="sourceLineNo">426</span> *<a name="line.426"></a> -<span class="sourceLineNo">427</span> * @return the latest version of the column, or <code>null</code> if none found<a name="line.427"></a> -<span class="sourceLineNo">428</span> */<a name="line.428"></a> -<span class="sourceLineNo">429</span> public ByteBuffer getValueAsByteBuffer(byte [] family, byte [] qualifier) {<a name="line.429"></a> -<span class="sourceLineNo">430</span><a name="line.430"></a> -<span class="sourceLineNo">431</span> Cell kv = getColumnLatestCell(family, 0, family.length, qualifier, 0, qualifier.length);<a name="line.431"></a> +<span class="sourceLineNo">254</span> Cell [] kvs = rawCells();<a name="line.254"></a> +<span class="sourceLineNo">255</span><a name="line.255"></a> +<span class="sourceLineNo">256</span> if (kvs == null || kvs.length == 0) {<a name="line.256"></a> +<span class="sourceLineNo">257</span> return result;<a name="line.257"></a> +<span class="sourceLineNo">258</span> }<a name="line.258"></a> +<span class="sourceLineNo">259</span> int pos = binarySearch(kvs, family, qualifier);<a name="line.259"></a> +<span class="sourceLineNo">260</span> if (pos == -1) {<a name="line.260"></a> +<span class="sourceLineNo">261</span> return result; // cant find it<a name="line.261"></a> +<span class="sourceLineNo">262</span> }<a name="line.262"></a> +<span class="sourceLineNo">263</span><a name="line.263"></a> +<span class="sourceLineNo">264</span> for (int i = pos; i < kvs.length; i++) {<a name="line.264"></a> +<span class="sourceLineNo">265</span> if (CellUtil.matchingColumn(kvs[i], family,qualifier)) {<a name="line.265"></a> +<span class="sourceLineNo">266</span> result.add(kvs[i]);<a name="line.266"></a> +<span class="sourceLineNo">267</span> } else {<a name="line.267"></a> +<span class="sourceLineNo">268</span> break;<a name="line.268"></a> +<span class="sourceLineNo">269</span> }<a name="line.269"></a> +<span class="sourceLineNo">270</span> }<a name="line.270"></a> +<span class="sourceLineNo">271</span><a name="line.271"></a> +<span class="sourceLineNo">272</span> return result;<a name="line.272"></a> +<span class="sourceLineNo">273</span> }<a name="line.273"></a> +<span class="sourceLineNo">274</span><a name="line.274"></a> +<span class="sourceLineNo">275</span> private byte[] notNullBytes(final byte[] bytes) {<a name="line.275"></a> +<span class="sourceLineNo">276</span> if (bytes == null) {<a name="line.276"></a> +<span class="sourceLineNo">277</span> return HConstants.EMPTY_BYTE_ARRAY;<a name="line.277"></a> +<span class="sourceLineNo">278</span> } else {<a name="line.278"></a> +<span class="sourceLineNo">279</span> return bytes;<a name="line.279"></a> +<span class="sourceLineNo">280</span> }<a name="line.280"></a> +<span class="sourceLineNo">281</span> }<a name="line.281"></a> +<span class="sourceLineNo">282</span><a name="line.282"></a> +<span class="sourceLineNo">283</span> protected int binarySearch(final Cell [] kvs,<a name="line.283"></a> +<span class="sourceLineNo">284</span> final byte [] family,<a name="line.284"></a> +<span class="sourceLineNo">285</span> final byte [] qualifier) {<a name="line.285"></a> +<span class="sourceLineNo">286</span> byte[] familyNotNull = notNullBytes(family);<a name="line.286"></a> +<span class="sourceLineNo">287</span> byte[] qualifierNotNull = notNullBytes(qualifier);<a name="line.287"></a> +<span class="sourceLineNo">288</span> Cell searchTerm =<a name="line.288"></a> +<span class="sourceLineNo">289</span> CellUtil.createFirstOnRow(kvs[0].getRowArray(),<a name="line.289"></a> +<span class="sourceLineNo">290</span> kvs[0].getRowOffset(), kvs[0].getRowLength(),<a name="line.290"></a> +<span class="sourceLineNo">291</span> familyNotNull, 0, (byte)familyNotNull.length,<a name="line.291"></a> +<span class="sourceLineNo">292</span> qualifierNotNull, 0, qualifierNotNull.length);<a name="line.292"></a> +<span class="sourceLineNo">293</span><a name="line.293"></a> +<span class="sourceLineNo">294</span> // pos === ( -(insertion point) - 1)<a name="line.294"></a> +<span class="sourceLineNo">295</span> int pos = Arrays.binarySearch(kvs, searchTerm, CellComparator.COMPARATOR);<a name="line.295"></a> +<span class="sourceLineNo">296</span> // never will exact match<a name="line.296"></a> +<span class="sourceLineNo">297</span> if (pos < 0) {<a name="line.297"></a> +<span class="sourceLineNo">298</span> pos = (pos+1) * -1;<a name="line.298"></a> +<span class="sourceLineNo">299</span> // pos is now insertion point<a name="line.299"></a> +<span class="sourceLineNo">300</span> }<a name="line.300"></a> +<span class="sourceLineNo">301</span> if (pos == kvs.length) {<a name="line.301"></a> +<span class="sourceLineNo">302</span> return -1; // doesn't exist<a name="line.302"></a> +<span class="sourceLineNo">303</span> }<a name="line.303"></a> +<span class="sourceLineNo">304</span> return pos;<a name="line.304"></a> +<span class="sourceLineNo">305</span> }<a name="line.305"></a> +<span class="sourceLineNo">306</span><a name="line.306"></a> +<span class="sourceLineNo">307</span> /**<a name="line.307"></a> +<span class="sourceLineNo">308</span> * Searches for the latest value for the specified column.<a name="line.308"></a> +<span class="sourceLineNo">309</span> *<a name="line.309"></a> +<span class="sourceLineNo">310</span> * @param kvs the array to search<a name="line.310"></a> +<span class="sourceLineNo">311</span> * @param family family name<a name="line.311"></a> +<span class="sourceLineNo">312</span> * @param foffset family offset<a name="line.312"></a> +<span class="sourceLineNo">313</span> * @param flength family length<a name="line.313"></a> +<span class="sourceLineNo">314</span> * @param qualifier column qualifier<a name="line.314"></a> +<span class="sourceLineNo">315</span> * @param qoffset qualifier offset<a name="line.315"></a> +<span class="sourceLineNo">316</span> * @param qlength qualifier length<a name="line.316"></a> +<span class="sourceLineNo">317</span> *<a name="line.317"></a> +<span class="sourceLineNo">318</span> * @return the index where the value was found, or -1 otherwise<a name="line.318"></a> +<span class="sourceLineNo">319</span> */<a name="line.319"></a> +<span class="sourceLineNo">320</span> protected int binarySearch(final Cell [] kvs,<a name="line.320"></a> +<span class="sourceLineNo">321</span> final byte [] family, final int foffset, final int flength,<a name="line.321"></a> +<span class="sourceLineNo">322</span> final byte [] qualifier, final int qoffset, final int qlength) {<a name="line.322"></a> +<span class="sourceLineNo">323</span><a name="line.323"></a> +<span class="sourceLineNo">324</span> double keyValueSize = (double)<a name="line.324"></a> +<span class="sourceLineNo">325</span> KeyValue.getKeyValueDataStructureSize(kvs[0].getRowLength(), flength, qlength, 0);<a name="line.325"></a> +<span class="sourceLineNo">326</span><a name="line.326"></a> +<span class="sourceLineNo">327</span> byte[] buffer = localBuffer.get();<a name="line.327"></a> +<span class="sourceLineNo">328</span> if (buffer == null || keyValueSize > buffer.length) {<a name="line.328"></a> +<span class="sourceLineNo">329</span> // pad to the smallest multiple of the pad width<a name="line.329"></a> +<span class="sourceLineNo">330</span> buffer = new byte[(int) Math.ceil(keyValueSize / PAD_WIDTH) * PAD_WIDTH];<a name="line.330"></a> +<span class="sourceLineNo">331</span> localBuffer.set(buffer);<a name="line.331"></a> +<span class="sourceLineNo">332</span> }<a name="line.332"></a> +<span class="sourceLineNo">333</span><a name="line.333"></a> +<span class="sourceLineNo">334</span> Cell searchTerm = KeyValueUtil.createFirstOnRow(buffer, 0,<a name="line.334"></a> +<span class="sourceLineNo">335</span> kvs[0].getRowArray(), kvs[0].getRowOffset(), kvs[0].getRowLength(),<a name="line.335"></a> +<span class="sourceLineNo">336</span> family, foffset, flength,<a name="line.336"></a> +<span class="sourceLineNo">337</span> qualifier, qoffset, qlength);<a name="line.337"></a> +<span class="sourceLineNo">338</span><a name="line.338"></a> +<span class="sourceLineNo">339</span> // pos === ( -(insertion point) - 1)<a name="line.339"></a> +<span class="sourceLineNo">340</span> int pos = Arrays.binarySearch(kvs, searchTerm, CellComparator.COMPARATOR);<a name="line.340"></a> +<span class="sourceLineNo">341</span> // never will exact match<a name="line.341"></a> +<span class="sourceLineNo">342</span> if (pos < 0) {<a name="line.342"></a> +<span class="sourceLineNo">343</span> pos = (pos+1) * -1;<a name="line.343"></a> +<span class="sourceLineNo">344</span> // pos is now insertion point<a name="line.344"></a> +<span class="sourceLineNo">345</span> }<a name="line.345"></a> +<span class="sourceLineNo">346</span> if (pos == kvs.length) {<a name="line.346"></a> +<span class="sourceLineNo">347</span> return -1; // doesn't exist<a name="line.347"></a> +<span class="sourceLineNo">348</span> }<a name="line.348"></a> +<span class="sourceLineNo">349</span> return pos;<a name="line.349"></a> +<span class="sourceLineNo">350</span> }<a name="line.350"></a> +<span class="sourceLineNo">351</span><a name="line.351"></a> +<span class="sourceLineNo">352</span> /**<a name="line.352"></a> +<span class="sourceLineNo">353</span> * The Cell for the most recent timestamp for a given column.<a name="line.353"></a> +<span class="sourceLineNo">354</span> *<a name="line.354"></a> +<span class="sourceLineNo">355</span> * @param family<a name="line.355"></a> +<span class="sourceLineNo">356</span> * @param qualifier<a name="line.356"></a> +<span class="sourceLineNo">357</span> *<a name="line.357"></a> +<span class="sourceLineNo">358</span> * @return the Cell for the column, or null if no value exists in the row or none have been<a name="line.358"></a> +<span class="sourceLineNo">359</span> * selected in the query (Get/Scan)<a name="line.359"></a> +<span class="sourceLineNo">360</span> */<a name="line.360"></a> +<span class="sourceLineNo">361</span> public Cell getColumnLatestCell(byte [] family, byte [] qualifier) {<a name="line.361"></a> +<span class="sourceLineNo">362</span> Cell [] kvs = rawCells(); // side effect possibly.<a name="line.362"></a> +<span class="sourceLineNo">363</span> if (kvs == null || kvs.length == 0) {<a name="line.363"></a> +<span class="sourceLineNo">364</span> return null;<a name="line.364"></a> +<span class="sourceLineNo">365</span> }<a name="line.365"></a> +<span class="sourceLineNo">366</span> int pos = binarySearch(kvs, family, qualifier);<a name="line.366"></a> +<span class="sourceLineNo">367</span> if (pos == -1) {<a name="line.367"></a> +<span class="sourceLineNo">368</span> return null;<a name="line.368"></a> +<span class="sourceLineNo">369</span> }<a name="line.369"></a> +<span class="sourceLineNo">370</span> if (CellUtil.matchingColumn(kvs[pos], family, qualifier)) {<a name="line.370"></a> +<span class="sourceLineNo">371</span> return kvs[pos];<a name="line.371"></a> +<span class="sourceLineNo">372</span> }<a name="line.372"></a> +<span class="sourceLineNo">373</span> return null;<a name="line.373"></a> +<span class="sourceLineNo">374</span> }<a name="line.374"></a> +<span class="sourceLineNo">375</span><a name="line.375"></a> +<span class="sourceLineNo">376</span> /**<a name="line.376"></a> +<span class="sourceLineNo">377</span> * The Cell for the most recent timestamp for a given column.<a name="line.377"></a> +<span class="sourceLineNo">378</span> *<a name="line.378"></a> +<span class="sourceLineNo">379</span> * @param family family name<a name="line.379"></a> +<span class="sourceLineNo">380</span> * @param foffset family offset<a name="line.380"></a> +<span class="sourceLineNo">381</span> * @param flength family length<a name="line.381"></a> +<span class="sourceLineNo">382</span> * @param qualifier column qualifier<a name="line.382"></a> +<span class="sourceLineNo">383</span> * @param qoffset qualifier offset<a name="line.383"></a> +<span class="sourceLineNo">384</span> * @param qlength qualifier length<a name="line.384"></a> +<span class="sourceLineNo">385</span> *<a name="line.385"></a> +<span class="sourceLineNo">386</span> * @return the Cell for the column, or null if no value exists in the row or none have been<a name="line.386"></a> +<span class="sourceLineNo">387</span> * selected in the query (Get/Scan)<a name="line.387"></a> +<span class="sourceLineNo">388</span> */<a name="line.388"></a> +<span class="sourceLineNo">389</span> public Cell getColumnLatestCell(byte [] family, int foffset, int flength,<a name="line.389"></a> +<span class="sourceLineNo">390</span> byte [] qualifier, int qoffset, int qlength) {<a name="line.390"></a> +<span class="sourceLineNo">391</span><a name="line.391"></a> +<span class="sourceLineNo">392</span> Cell [] kvs = rawCells(); // side effect possibly.<a name="line.392"></a> +<span class="sourceLineNo">393</span> if (kvs == null || kvs.length == 0) {<a name="line.393"></a> +<span class="sourceLineNo">394</span> return null;<a name="line.394"></a> +<span class="sourceLineNo">395</span> }<a name="line.395"></a> +<span class="sourceLineNo">396</span> int pos = binarySearch(kvs, family, foffset, flength, qualifier, qoffset, qlength);<a name="line.396"></a> +<span class="sourceLineNo">397</span> if (pos == -1) {<a name="line.397"></a> +<span class="sourceLineNo">398</span> return null;<a name="line.398"></a> +<span class="sourceLineNo">399</span> }<a name="line.399"></a> +<span class="sourceLineNo">400</span> if (CellUtil.matchingColumn(kvs[pos], family, foffset, flength, qualifier, qoffset, qlength)) {<a name="line.400"></a> +<span class="sourceLineNo">401</span> return kvs[pos];<a name="line.401"></a> +<span class="sourceLineNo">402</span> }<a name="line.402"></a> +<span class="sourceLineNo">403</span> return null;<a name="line.403"></a> +<span class="sourceLineNo">404</span> }<a name="line.404"></a> +<span class="sourceLineNo">405</span><a name="line.405"></a> +<span class="sourceLineNo">406</span> /**<a name="line.406"></a> +<span class="sourceLineNo">407</span> * Get the latest version of the specified column.<a name="line.407"></a> +<span class="sourceLineNo">408</span> * Note: this call clones the value content of the hosting Cell. See<a name="line.408"></a> +<span class="sourceLineNo">409</span> * {@link #getValueAsByteBuffer(byte[], byte[])}, etc., or {@link #listCells()} if you would<a name="line.409"></a> +<span class="sourceLineNo">410</span> * avoid the cloning.<a name="line.410"></a> +<span class="sourceLineNo">411</span> * @param family family name<a name="line.411"></a> +<span class="sourceLineNo">412</span> * @param qualifier column qualifier<a name="line.412"></a> +<span class="sourceLineNo">413</span> * @return value of latest version of column, null if none found<a name="line.413"></a> +<span class="sourceLineNo">414</span> */<a name="line.414"></a> +<span class="sourceLineNo">415</span> public byte[] getValue(byte [] family, byte [] qualifier) {<a name="line.415"></a> +<span class="sourceLineNo">416</span> Cell kv = getColumnLatestCell(family, qualifier);<a name="line.416"></a> +<span class="sourceLineNo">417</span> if (kv == null) {<a name="line.417"></a> +<span class="sourceLineNo">418</span> return null;<a name="line.418"></a> +<span class="sourceLineNo">419</span> }<a name="line.419"></a> +<span class="sourceLineNo">420</span> return CellUtil.cloneValue(kv);<a name="line.420"></a> +<span class="sourceLineNo">421</span> }<a name="line.421"></a> +<span class="sourceLineNo">422</span><a name="line.422"></a> +<span class="sourceLineNo">423</span> /**<a name="line.423"></a> +<span class="sourceLineNo">424</span> * Returns the value wrapped in a new <code>ByteBuffer</code>.<a name="line.424"></a> +<span class="sourceLineNo">425</span> *<a name="line.425"></a> +<span class="sourceLineNo">426</span> * @param family family name<a name="line.426"></a> +<span class="sourceLineNo">427</span> * @param qualifier column qualifier<a name="line.427"></a> +<span class="sourceLineNo">428</span> *<a name="line.428"></a> +<span class="sourceLineNo">429</span> * @return the latest version of the column, or <code>null</code> if none found<a name="line.429"></a> +<span class="sourceLineNo">430</span> */<a name="line.430"></a> +<span class="sourceLineNo">431</span> public ByteBuffer getValueAsByteBuffer(byte [] family, byte [] qualifier) {<a name="line.431"></a> <span class="sourceLineNo">432</span><a name="line.432"></a> -<span class="sourceLineNo">433</span> if (kv == null) {<a name="line.433"></a> -<span class="sourceLineNo">434</span> return null;<a name="line.434"></a> -<span class="sourceLineNo">435</span> }<a name="line.435"></a> -<span class="sourceLineNo">436</span> return ByteBuffer.wrap(kv.getValueArray(), kv.getValueOffset(), kv.getValueLength()).<a name="line.436"></a> -<span class="sourceLineNo">437</span> asReadOnlyBuffer();<a name="line.437"></a> -<span class="sourceLineNo">438</span> }<a name="line.438"></a> -<span class="sourceLineNo">439</span><a name="line.439"></a> -<span class="sourceLineNo">440</span> /**<a name="line.440"></a> -<span class="sourceLineNo">441</span> * Returns the value wrapped in a new <code>ByteBuffer</code>.<a name="line.441"></a> -<span class="sourceLineNo">442</span> *<a name="line.442"></a> -<span class="sourceLineNo">443</span> * @param family family name<a name="line.443"></a> -<span class="sourceLineNo">444</span> * @param foffset family offset<a name="line.444"></a> -<span class="sourceLineNo">445</span> * @param flength family length<a name="line.445"></a> -<span class="sourceLineNo">446</span> * @param qualifier column qualifier<a name="line.446"></a> -<span class="sourceLineNo">447</span> * @param qoffset qualifier offset<a name="line.447"></a> -<span class="sourceLineNo">448</span> * @param qlength qualifier length<a name="line.448"></a> -<span class="sourceLineNo">449</span> *<a name="line.449"></a> -<span class="sourceLineNo">450</span> * @return the latest version of the column, or <code>null</code> if none found<a name="line.450"></a> -<span class="sourceLineNo">451</span> */<a name="line.451"></a> -<span class="sourceLineNo">452</span> public ByteBuffer getValueAsByteBuffer(byte [] family, int foffset, int flength,<a name="line.452"></a> -<span class="sourceLineNo">453</span> byte [] qualifier, int qoffset, int qlength) {<a name="line.453"></a> -<span class="sourceLineNo">454</span><a name="line.454"></a> -<span class="sourceLineNo">455</span> Cell kv = getColumnLatestCell(family, foffset, flength, qualifier, qoffset, qlength);<a name="line.455"></a> +<span class="sourceLineNo">433</span> Cell kv = getColumnLatestCell(family, 0, family.length, qualifier, 0, qualifier.length);<a name="line.433"></a> +<span class="sourceLineNo">434</span><a name="line.434"></a> +<span class="sourceLineNo">435</span> if (kv == null) {<a name="line.435"></a> +<span class="sourceLineNo">436</span> return null;<a name="line.436"></a> +<span class="sourceLineNo">437</span> }<a name="line.437"></a> +<span class="sourceLineNo">438</span> return ByteBuffer.wrap(kv.getValueArray(), kv.getValueOffset(), kv.getValueLength()).<a name="line.438"></a> +<span class="sourceLineNo">439</span> asReadOnlyBuffer();<a name="line.439"></a> +<span class="sourceLineNo">440</span> }<a name="line.440"></a> +<span class="sourceLineNo">441</span><a name="line.441"></a> +<span class="sourceLineNo">442</span> /**<a name="line.442"></a> +<span class="sourceLineNo">443</span> * Returns the value wrapped in a new <code>ByteBuffer</code>.<a name="line.443"></a> +<span class="sourceLineNo">444</span> *<a name="line.444"></a> +<span class="sourceLineNo">445</span> * @param family family name<a name="line.445"></a> +<span class="sourceLineNo">446</span> * @param foffset family offset<a name="line.446"></a> +<span class="sourceLineNo">447</span> * @param flength family length<a name="line.447"></a> +<span class="sourceLineNo">448</span> * @param qualifier column qualifier<a name="line.448"></a> +<span class="sourceLineNo">449</span> * @param qoffset qualifier offset<a name="line.449"></a> +<span class="sourceLineNo">450</span> * @param qlength qualifier length<a name="line.450"></a> +<span class="sourceLineNo">451</span> *<a name="line.451"></a> +<span class="sourceLineNo">452</span> * @return the latest version of the column, or <code>null</code> if none found<a name="line.452"></a> +<span class="sourceLineNo">453</span> */<a name="line.453"></a> +<span class="sourceLineNo">454</span> public ByteBuffer getValueAsByteBuffer(byte [] family, int foffset, int flength,<a name="line.454"></a> +<span class="sourceLineNo">455</span> byte [] qualifier, int qoffset, int qlength) {<a name="line.455"></a> <span class="sourceLineNo">456</span><a name="line.456"></a> -<span class="sourceLineNo">457</span> if (kv == null) {<a name="line.457"></a> -<span class="sourceLineNo">458</span> return null;<a name="line.458"></a> -<span class="sourceLineNo">459</span> }<a name="line.459"></a> -<span class="sourceLineNo">460</span> return ByteBuffer.wrap(kv.getValueArray(), kv.getValueOffset(), kv.getValueLength()).<a name="line.460"></a> -<span class="sourceLineNo">461</span> asReadOnlyBuffer();<a name="line.461"></a> -<span class="sourceLineNo">462</span> }<a name="line.462"></a> -<span class="sourceLineNo">463</span><a name="line.463"></a> -<span class="sourceLineNo">464</span> /**<a name="line.464"></a> -<span class="sourceLineNo">465</span> * Loads the latest version of the specified column into the provided <code>ByteBuffer</code>.<a name="line.465"></a> -<span class="sourceLineNo">466</span> * <p><a name="line.466"></a> -<span class="sourceLineNo">467</span> * Does not clear or flip the buffer.<a name="line.467"></a> -<span class="sourceLineNo">468</span> *<a name="line.468"></a> -<span class="sourceLineNo">469</span> * @param family family name<a name="line.469"></a> -<span class="sourceLineNo">470</span> * @param qualifier column qualifier<a name="line.470"></a> -<span class="sourceLineNo">471</span> * @param dst the buffer where to write the value<a name="line.471"></a> -<span class="sourceLineNo">472</span> *<a 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<TRUNCATED>
