http://git-wip-us.apache.org/repos/asf/hbase-site/blob/b1eb7453/devapidocs/src-html/org/apache/hadoop/hbase/KeyValue.KeyOnlyKeyValue.html ---------------------------------------------------------------------- diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/KeyValue.KeyOnlyKeyValue.html b/devapidocs/src-html/org/apache/hadoop/hbase/KeyValue.KeyOnlyKeyValue.html index d98042d..d549086 100644 --- a/devapidocs/src-html/org/apache/hadoop/hbase/KeyValue.KeyOnlyKeyValue.html +++ b/devapidocs/src-html/org/apache/hadoop/hbase/KeyValue.KeyOnlyKeyValue.html @@ -42,2537 +42,2536 @@ <span class="sourceLineNo">034</span><a name="line.34"></a> <span class="sourceLineNo">035</span>import org.apache.commons.logging.Log;<a name="line.35"></a> <span class="sourceLineNo">036</span>import org.apache.commons.logging.LogFactory;<a name="line.36"></a> -<span class="sourceLineNo">037</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.37"></a> +<span class="sourceLineNo">037</span>import org.apache.hadoop.hbase.shaded.com.google.common.annotations.VisibleForTesting;<a name="line.37"></a> <span class="sourceLineNo">038</span>import org.apache.hadoop.hbase.util.ByteBufferUtils;<a name="line.38"></a> <span class="sourceLineNo">039</span>import org.apache.hadoop.hbase.util.Bytes;<a name="line.39"></a> <span class="sourceLineNo">040</span>import org.apache.hadoop.hbase.util.ClassSize;<a name="line.40"></a> <span class="sourceLineNo">041</span>import org.apache.hadoop.io.RawComparator;<a name="line.41"></a> -<span class="sourceLineNo">042</span><a name="line.42"></a> -<span class="sourceLineNo">043</span>import org.apache.hadoop.hbase.shaded.com.google.common.annotations.VisibleForTesting;<a name="line.43"></a> -<span class="sourceLineNo">044</span>/**<a name="line.44"></a> -<span class="sourceLineNo">045</span> * An HBase Key/Value. This is the fundamental HBase Type.<a name="line.45"></a> -<span class="sourceLineNo">046</span> * <p><a name="line.46"></a> -<span class="sourceLineNo">047</span> * HBase applications and users should use the Cell interface and avoid directly using KeyValue and<a name="line.47"></a> -<span class="sourceLineNo">048</span> * member functions not defined in Cell.<a name="line.48"></a> -<span class="sourceLineNo">049</span> * <p><a name="line.49"></a> -<span class="sourceLineNo">050</span> * If being used client-side, the primary methods to access individual fields are<a name="line.50"></a> -<span class="sourceLineNo">051</span> * {@link #getRowArray()}, {@link #getFamilyArray()}, {@link #getQualifierArray()},<a name="line.51"></a> -<span class="sourceLineNo">052</span> * {@link #getTimestamp()}, and {@link #getValueArray()}. These methods allocate new byte arrays<a name="line.52"></a> -<span class="sourceLineNo">053</span> * and return copies. Avoid their use server-side.<a name="line.53"></a> -<span class="sourceLineNo">054</span> * <p><a name="line.54"></a> -<span class="sourceLineNo">055</span> * Instances of this class are immutable. They do not implement Comparable but Comparators are<a name="line.55"></a> -<span class="sourceLineNo">056</span> * provided. Comparators change with context, whether user table or a catalog table comparison. Its<a name="line.56"></a> -<span class="sourceLineNo">057</span> * critical you use the appropriate comparator. There are Comparators for normal HFiles, Meta's<a name="line.57"></a> -<span class="sourceLineNo">058</span> * Hfiles, and bloom filter keys.<a name="line.58"></a> -<span class="sourceLineNo">059</span> * <p><a name="line.59"></a> -<span class="sourceLineNo">060</span> * KeyValue wraps a byte array and takes offsets and lengths into passed array at where to start<a name="line.60"></a> -<span class="sourceLineNo">061</span> * interpreting the content as KeyValue. The KeyValue format inside a byte array is:<a name="line.61"></a> -<span class="sourceLineNo">062</span> * <code>&lt;keylength&gt; &lt;valuelength&gt; &lt;key&gt; &lt;value&gt;</code> Key is further<a name="line.62"></a> -<span class="sourceLineNo">063</span> * decomposed as: <code>&lt;rowlength&gt; &lt;row&gt; &lt;columnfamilylength&gt;<a name="line.63"></a> -<span class="sourceLineNo">064</span> * &lt;columnfamily&gt; &lt;columnqualifier&gt;<a name="line.64"></a> -<span class="sourceLineNo">065</span> * &lt;timestamp&gt; &lt;keytype&gt;</code> The <code>rowlength</code> maximum is<a name="line.65"></a> -<span class="sourceLineNo">066</span> * <code>Short.MAX_SIZE</code>, column family length maximum is <code>Byte.MAX_SIZE</code>, and<a name="line.66"></a> -<span class="sourceLineNo">067</span> * column qualifier + key length must be &lt; <code>Integer.MAX_SIZE</code>. The column does not<a name="line.67"></a> -<span class="sourceLineNo">068</span> * contain the family/qualifier delimiter, {@link #COLUMN_FAMILY_DELIMITER}<br><a name="line.68"></a> -<span class="sourceLineNo">069</span> * KeyValue can optionally contain Tags. When it contains tags, it is added in the byte array after<a name="line.69"></a> -<span class="sourceLineNo">070</span> * the value part. The format for this part is: <code>&lt;tagslength&gt;&lt;tagsbytes&gt;</code>.<a name="line.70"></a> -<span class="sourceLineNo">071</span> * <code>tagslength</code> maximum is <code>Short.MAX_SIZE</code>. The <code>tagsbytes</code><a name="line.71"></a> -<span class="sourceLineNo">072</span> * contain one or more tags where as each tag is of the form<a name="line.72"></a> -<span class="sourceLineNo">073</span> * <code>&lt;taglength&gt;&lt;tagtype&gt;&lt;tagbytes&gt;</code>. <code>tagtype</code> is one byte<a name="line.73"></a> -<span class="sourceLineNo">074</span> * and <code>taglength</code> maximum is <code>Short.MAX_SIZE</code> and it includes 1 byte type<a name="line.74"></a> -<span class="sourceLineNo">075</span> * length and actual tag bytes length.<a name="line.75"></a> -<span class="sourceLineNo">076</span> */<a name="line.76"></a> -<span class="sourceLineNo">077</span>@InterfaceAudience.Private<a name="line.77"></a> -<span class="sourceLineNo">078</span>public class KeyValue implements ExtendedCell {<a name="line.78"></a> -<span class="sourceLineNo">079</span> private static final ArrayList<Tag> EMPTY_ARRAY_LIST = new ArrayList<>();<a name="line.79"></a> -<span class="sourceLineNo">080</span><a name="line.80"></a> -<span class="sourceLineNo">081</span> private static final Log LOG = LogFactory.getLog(KeyValue.class);<a name="line.81"></a> -<span class="sourceLineNo">082</span><a name="line.82"></a> -<span class="sourceLineNo">083</span> public static final long FIXED_OVERHEAD = ClassSize.OBJECT + // the KeyValue object itself<a name="line.83"></a> -<span class="sourceLineNo">084</span> ClassSize.REFERENCE + // pointer to "bytes"<a name="line.84"></a> -<span class="sourceLineNo">085</span> 2 * Bytes.SIZEOF_INT + // offset, length<a name="line.85"></a> -<span class="sourceLineNo">086</span> Bytes.SIZEOF_LONG;// memstoreTS<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> * Colon character in UTF-8<a name="line.89"></a> -<span class="sourceLineNo">090</span> */<a name="line.90"></a> -<span class="sourceLineNo">091</span> public static final char COLUMN_FAMILY_DELIMITER = ':';<a name="line.91"></a> -<span class="sourceLineNo">092</span><a name="line.92"></a> -<span class="sourceLineNo">093</span> public static final byte[] COLUMN_FAMILY_DELIM_ARRAY =<a name="line.93"></a> -<span class="sourceLineNo">094</span> new byte[]{COLUMN_FAMILY_DELIMITER};<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> * Comparator for plain key/values; i.e. non-catalog table key/values. Works on Key portion<a name="line.97"></a> -<span class="sourceLineNo">098</span> * of KeyValue only.<a name="line.98"></a> -<span class="sourceLineNo">099</span> * @deprecated Use {@link CellComparator#getInstance()} instead. Deprecated for hbase 2.0, remove for hbase 3.0.<a name="line.99"></a> -<span class="sourceLineNo">100</span> */<a name="line.100"></a> -<span class="sourceLineNo">101</span> @Deprecated<a name="line.101"></a> -<span class="sourceLineNo">102</span> public static final KVComparator COMPARATOR = new KVComparator();<a name="line.102"></a> -<span class="sourceLineNo">103</span> /**<a name="line.103"></a> -<span class="sourceLineNo">104</span> * A {@link KVComparator} for <code>hbase:meta</code> catalog table<a name="line.104"></a> -<span class="sourceLineNo">105</span> * {@link KeyValue}s.<a name="line.105"></a> -<span class="sourceLineNo">106</span> * @deprecated Use {@link CellComparatorImpl#META_COMPARATOR} instead. Deprecated for hbase 2.0, remove for hbase 3.0.<a name="line.106"></a> -<span class="sourceLineNo">107</span> */<a name="line.107"></a> -<span class="sourceLineNo">108</span> @Deprecated<a name="line.108"></a> -<span class="sourceLineNo">109</span> public static final KVComparator META_COMPARATOR = new MetaComparator();<a name="line.109"></a> -<span class="sourceLineNo">110</span><a name="line.110"></a> -<span class="sourceLineNo">111</span> /** Size of the key length field in bytes*/<a name="line.111"></a> -<span class="sourceLineNo">112</span> public static final int KEY_LENGTH_SIZE = Bytes.SIZEOF_INT;<a name="line.112"></a> -<span class="sourceLineNo">113</span><a name="line.113"></a> -<span class="sourceLineNo">114</span> /** Size of the key type field in bytes */<a name="line.114"></a> -<span class="sourceLineNo">115</span> public static final int TYPE_SIZE = Bytes.SIZEOF_BYTE;<a name="line.115"></a> -<span class="sourceLineNo">116</span><a name="line.116"></a> -<span class="sourceLineNo">117</span> /** Size of the row length field in bytes */<a name="line.117"></a> -<span class="sourceLineNo">118</span> public static final int ROW_LENGTH_SIZE = Bytes.SIZEOF_SHORT;<a name="line.118"></a> -<span class="sourceLineNo">119</span><a name="line.119"></a> -<span class="sourceLineNo">120</span> /** Size of the family length field in bytes */<a name="line.120"></a> -<span class="sourceLineNo">121</span> public static final int FAMILY_LENGTH_SIZE = Bytes.SIZEOF_BYTE;<a name="line.121"></a> -<span class="sourceLineNo">122</span><a name="line.122"></a> -<span class="sourceLineNo">123</span> /** Size of the timestamp field in bytes */<a name="line.123"></a> -<span class="sourceLineNo">124</span> public static final int TIMESTAMP_SIZE = Bytes.SIZEOF_LONG;<a name="line.124"></a> -<span class="sourceLineNo">125</span><a name="line.125"></a> -<span class="sourceLineNo">126</span> // Size of the timestamp and type byte on end of a key -- a long + a byte.<a name="line.126"></a> -<span class="sourceLineNo">127</span> public static final int TIMESTAMP_TYPE_SIZE = TIMESTAMP_SIZE + TYPE_SIZE;<a name="line.127"></a> -<span class="sourceLineNo">128</span><a name="line.128"></a> -<span class="sourceLineNo">129</span> // Size of the length shorts and bytes in key.<a name="line.129"></a> -<span class="sourceLineNo">130</span> public static final int KEY_INFRASTRUCTURE_SIZE = ROW_LENGTH_SIZE<a name="line.130"></a> -<span class="sourceLineNo">131</span> + FAMILY_LENGTH_SIZE + TIMESTAMP_TYPE_SIZE;<a name="line.131"></a> -<span class="sourceLineNo">132</span><a name="line.132"></a> -<span class="sourceLineNo">133</span> // How far into the key the row starts at. First thing to read is the short<a name="line.133"></a> -<span class="sourceLineNo">134</span> // that says how long the row is.<a name="line.134"></a> -<span class="sourceLineNo">135</span> public static final int ROW_OFFSET =<a name="line.135"></a> -<span class="sourceLineNo">136</span> Bytes.SIZEOF_INT /*keylength*/ +<a name="line.136"></a> -<span class="sourceLineNo">137</span> Bytes.SIZEOF_INT /*valuelength*/;<a name="line.137"></a> -<span class="sourceLineNo">138</span><a name="line.138"></a> -<span class="sourceLineNo">139</span> public static final int ROW_KEY_OFFSET = ROW_OFFSET + ROW_LENGTH_SIZE;<a name="line.139"></a> -<span class="sourceLineNo">140</span><a name="line.140"></a> -<span class="sourceLineNo">141</span> // Size of the length ints in a KeyValue datastructure.<a name="line.141"></a> -<span class="sourceLineNo">142</span> public static final int KEYVALUE_INFRASTRUCTURE_SIZE = ROW_OFFSET;<a name="line.142"></a> -<span class="sourceLineNo">143</span><a name="line.143"></a> -<span class="sourceLineNo">144</span> /** Size of the tags length field in bytes */<a name="line.144"></a> -<span class="sourceLineNo">145</span> public static final int TAGS_LENGTH_SIZE = Bytes.SIZEOF_SHORT;<a name="line.145"></a> -<span class="sourceLineNo">146</span><a name="line.146"></a> -<span class="sourceLineNo">147</span> public static final int KEYVALUE_WITH_TAGS_INFRASTRUCTURE_SIZE = ROW_OFFSET + TAGS_LENGTH_SIZE;<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> * Computes the number of bytes that a <code>KeyValue</code> instance with the provided<a name="line.150"></a> -<span class="sourceLineNo">151</span> * characteristics would take up for its underlying data structure.<a name="line.151"></a> -<span class="sourceLineNo">152</span> *<a name="line.152"></a> -<span class="sourceLineNo">153</span> * @param rlength row length<a name="line.153"></a> -<span class="sourceLineNo">154</span> * @param flength family length<a name="line.154"></a> -<span class="sourceLineNo">155</span> * @param qlength qualifier length<a name="line.155"></a> -<span class="sourceLineNo">156</span> * @param vlength value length<a name="line.156"></a> -<span class="sourceLineNo">157</span> *<a name="line.157"></a> -<span class="sourceLineNo">158</span> * @return the <code>KeyValue</code> data structure length<a name="line.158"></a> -<span class="sourceLineNo">159</span> */<a name="line.159"></a> -<span class="sourceLineNo">160</span> public static long getKeyValueDataStructureSize(int rlength,<a name="line.160"></a> -<span class="sourceLineNo">161</span> int flength, int qlength, int vlength) {<a name="line.161"></a> -<span class="sourceLineNo">162</span> return KeyValue.KEYVALUE_INFRASTRUCTURE_SIZE<a name="line.162"></a> -<span class="sourceLineNo">163</span> + getKeyDataStructureSize(rlength, flength, qlength) + vlength;<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> /**<a name="line.166"></a> -<span class="sourceLineNo">167</span> * Computes the number of bytes that a <code>KeyValue</code> instance with the provided<a name="line.167"></a> -<span class="sourceLineNo">168</span> * characteristics would take up for its underlying data structure.<a name="line.168"></a> -<span class="sourceLineNo">169</span> *<a name="line.169"></a> -<span class="sourceLineNo">170</span> * @param rlength row length<a name="line.170"></a> -<span class="sourceLineNo">171</span> * @param flength family length<a name="line.171"></a> -<span class="sourceLineNo">172</span> * @param qlength qualifier length<a name="line.172"></a> -<span class="sourceLineNo">173</span> * @param vlength value length<a name="line.173"></a> -<span class="sourceLineNo">174</span> * @param tagsLength total length of the tags<a name="line.174"></a> -<span class="sourceLineNo">175</span> *<a name="line.175"></a> -<span class="sourceLineNo">176</span> * @return the <code>KeyValue</code> data structure length<a name="line.176"></a> -<span class="sourceLineNo">177</span> */<a name="line.177"></a> -<span class="sourceLineNo">178</span> public static long getKeyValueDataStructureSize(int rlength, int flength, int qlength,<a name="line.178"></a> -<span class="sourceLineNo">179</span> int vlength, int tagsLength) {<a name="line.179"></a> -<span class="sourceLineNo">180</span> if (tagsLength == 0) {<a name="line.180"></a> -<span class="sourceLineNo">181</span> return getKeyValueDataStructureSize(rlength, flength, qlength, vlength);<a name="line.181"></a> -<span class="sourceLineNo">182</span> }<a name="line.182"></a> -<span class="sourceLineNo">183</span> return KeyValue.KEYVALUE_WITH_TAGS_INFRASTRUCTURE_SIZE<a name="line.183"></a> -<span class="sourceLineNo">184</span> + getKeyDataStructureSize(rlength, flength, qlength) + vlength + tagsLength;<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> * Computes the number of bytes that a <code>KeyValue</code> instance with the provided<a name="line.188"></a> -<span class="sourceLineNo">189</span> * characteristics would take up for its underlying data structure.<a name="line.189"></a> -<span class="sourceLineNo">190</span> *<a name="line.190"></a> -<span class="sourceLineNo">191</span> * @param klength key length<a name="line.191"></a> -<span class="sourceLineNo">192</span> * @param vlength value length<a name="line.192"></a> -<span class="sourceLineNo">193</span> * @param tagsLength total length of the tags<a name="line.193"></a> -<span class="sourceLineNo">194</span> *<a name="line.194"></a> -<span class="sourceLineNo">195</span> * @return the <code>KeyValue</code> data structure length<a name="line.195"></a> -<span class="sourceLineNo">196</span> */<a name="line.196"></a> -<span class="sourceLineNo">197</span> public static long getKeyValueDataStructureSize(int klength, int vlength, int tagsLength) {<a name="line.197"></a> -<span class="sourceLineNo">198</span> if (tagsLength == 0) {<a name="line.198"></a> -<span class="sourceLineNo">199</span> return KeyValue.KEYVALUE_INFRASTRUCTURE_SIZE + klength + vlength;<a name="line.199"></a> -<span class="sourceLineNo">200</span> }<a name="line.200"></a> -<span class="sourceLineNo">201</span> return KeyValue.KEYVALUE_WITH_TAGS_INFRASTRUCTURE_SIZE + klength + vlength + tagsLength;<a name="line.201"></a> -<span class="sourceLineNo">202</span> }<a name="line.202"></a> -<span class="sourceLineNo">203</span><a name="line.203"></a> -<span class="sourceLineNo">204</span> /**<a name="line.204"></a> -<span class="sourceLineNo">205</span> * Computes the number of bytes that a <code>KeyValue</code> instance with the provided<a name="line.205"></a> -<span class="sourceLineNo">206</span> * characteristics would take up in its underlying data structure for the key.<a name="line.206"></a> -<span class="sourceLineNo">207</span> *<a name="line.207"></a> -<span class="sourceLineNo">208</span> * @param rlength row length<a name="line.208"></a> -<span class="sourceLineNo">209</span> * @param flength family length<a name="line.209"></a> -<span class="sourceLineNo">210</span> * @param qlength qualifier length<a name="line.210"></a> -<span class="sourceLineNo">211</span> *<a name="line.211"></a> -<span class="sourceLineNo">212</span> * @return the key data structure length<a name="line.212"></a> -<span class="sourceLineNo">213</span> */<a name="line.213"></a> -<span class="sourceLineNo">214</span> public static long getKeyDataStructureSize(int rlength, int flength, int qlength) {<a name="line.214"></a> -<span class="sourceLineNo">215</span> return KeyValue.KEY_INFRASTRUCTURE_SIZE + rlength + flength + qlength;<a name="line.215"></a> -<span class="sourceLineNo">216</span> }<a name="line.216"></a> -<span class="sourceLineNo">217</span><a name="line.217"></a> -<span class="sourceLineNo">218</span> /**<a name="line.218"></a> -<span class="sourceLineNo">219</span> * Key type.<a name="line.219"></a> -<span class="sourceLineNo">220</span> * Has space for other key types to be added later. Cannot rely on<a name="line.220"></a> -<span class="sourceLineNo">221</span> * enum ordinals . They change if item is removed or moved. Do our own codes.<a name="line.221"></a> -<span class="sourceLineNo">222</span> */<a name="line.222"></a> -<span class="sourceLineNo">223</span> public static enum Type {<a name="line.223"></a> -<span class="sourceLineNo">224</span> Minimum((byte)0),<a name="line.224"></a> -<span class="sourceLineNo">225</span> Put((byte)4),<a name="line.225"></a> -<span class="sourceLineNo">226</span><a name="line.226"></a> -<span class="sourceLineNo">227</span> Delete((byte)8),<a name="line.227"></a> -<span class="sourceLineNo">228</span> DeleteFamilyVersion((byte)10),<a name="line.228"></a> -<span class="sourceLineNo">229</span> DeleteColumn((byte)12),<a name="line.229"></a> -<span class="sourceLineNo">230</span> DeleteFamily((byte)14),<a name="line.230"></a> -<span class="sourceLineNo">231</span><a name="line.231"></a> -<span class="sourceLineNo">232</span> // Maximum is used when searching; you look from maximum on down.<a name="line.232"></a> -<span class="sourceLineNo">233</span> Maximum((byte)255);<a name="line.233"></a> -<span class="sourceLineNo">234</span><a name="line.234"></a> -<span class="sourceLineNo">235</span> private final byte code;<a name="line.235"></a> -<span class="sourceLineNo">236</span><a name="line.236"></a> -<span class="sourceLineNo">237</span> Type(final byte c) {<a name="line.237"></a> -<span class="sourceLineNo">238</span> this.code = c;<a name="line.238"></a> -<span class="sourceLineNo">239</span> }<a name="line.239"></a> -<span class="sourceLineNo">240</span><a name="line.240"></a> -<span class="sourceLineNo">241</span> public byte getCode() {<a name="line.241"></a> -<span class="sourceLineNo">242</span> return this.code;<a name="line.242"></a> -<span class="sourceLineNo">243</span> }<a name="line.243"></a> -<span class="sourceLineNo">244</span><a name="line.244"></a> -<span class="sourceLineNo">245</span> private static Type[] codeArray = new Type[256];<a name="line.245"></a> -<span class="sourceLineNo">246</span><a name="line.246"></a> -<span class="sourceLineNo">247</span> static {<a name="line.247"></a> -<span class="sourceLineNo">248</span> for (Type t : Type.values()) {<a name="line.248"></a> -<span class="sourceLineNo">249</span> codeArray[t.code & 0xff] = t;<a name="line.249"></a> -<span class="sourceLineNo">250</span> }<a name="line.250"></a> -<span class="sourceLineNo">251</span> }<a name="line.251"></a> -<span class="sourceLineNo">252</span><a name="line.252"></a> -<span class="sourceLineNo">253</span> /**<a name="line.253"></a> -<span class="sourceLineNo">254</span> * Cannot rely on enum ordinals . They change if item is removed or moved.<a name="line.254"></a> -<span class="sourceLineNo">255</span> * Do our own codes.<a name="line.255"></a> -<span class="sourceLineNo">256</span> * @param b<a name="line.256"></a> -<span class="sourceLineNo">257</span> * @return Type associated with passed code.<a name="line.257"></a> -<span class="sourceLineNo">258</span> */<a name="line.258"></a> -<span class="sourceLineNo">259</span> public static Type codeToType(final byte b) {<a name="line.259"></a> -<span class="sourceLineNo">260</span> Type t = codeArray[b & 0xff];<a name="line.260"></a> -<span class="sourceLineNo">261</span> if (t != null) {<a name="line.261"></a> -<span class="sourceLineNo">262</span> return t;<a name="line.262"></a> -<span class="sourceLineNo">263</span> }<a name="line.263"></a> -<span class="sourceLineNo">264</span> throw new RuntimeException("Unknown code " + b);<a name="line.264"></a> -<span class="sourceLineNo">265</span> }<a name="line.265"></a> -<span class="sourceLineNo">266</span> }<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> * Lowest possible key.<a name="line.269"></a> -<span class="sourceLineNo">270</span> * Makes a Key with highest possible Timestamp, empty row and column. No<a name="line.270"></a> -<span class="sourceLineNo">271</span> * key can be equal or lower than this one in memstore or in store file.<a name="line.271"></a> -<span class="sourceLineNo">272</span> */<a name="line.272"></a> -<span class="sourceLineNo">273</span> public static final KeyValue LOWESTKEY =<a name="line.273"></a> -<span class="sourceLineNo">274</span> new KeyValue(HConstants.EMPTY_BYTE_ARRAY, HConstants.LATEST_TIMESTAMP);<a name="line.274"></a> -<span class="sourceLineNo">275</span><a name="line.275"></a> -<span class="sourceLineNo">276</span> ////<a name="line.276"></a> -<span class="sourceLineNo">277</span> // KeyValue core instance fields.<a name="line.277"></a> -<span class="sourceLineNo">278</span> protected byte [] bytes = null; // an immutable byte array that contains the KV<a name="line.278"></a> -<span class="sourceLineNo">279</span> protected int offset = 0; // offset into bytes buffer KV starts at<a name="line.279"></a> -<span class="sourceLineNo">280</span> protected int length = 0; // length of the KV starting from offset.<a name="line.280"></a> -<span class="sourceLineNo">281</span><a name="line.281"></a> -<span class="sourceLineNo">282</span> /** Here be dragons **/<a name="line.282"></a> -<span class="sourceLineNo">283</span><a name="line.283"></a> -<span class="sourceLineNo">284</span> /**<a name="line.284"></a> -<span class="sourceLineNo">285</span> * used to achieve atomic operations in the memstore.<a name="line.285"></a> -<span class="sourceLineNo">286</span> */<a name="line.286"></a> -<span class="sourceLineNo">287</span> @Override<a name="line.287"></a> -<span class="sourceLineNo">288</span> public long getSequenceId() {<a name="line.288"></a> -<span class="sourceLineNo">289</span> return seqId;<a name="line.289"></a> -<span class="sourceLineNo">290</span> }<a name="line.290"></a> -<span class="sourceLineNo">291</span><a name="line.291"></a> -<span class="sourceLineNo">292</span> @Override<a name="line.292"></a> -<span class="sourceLineNo">293</span> public void setSequenceId(long seqId) {<a name="line.293"></a> -<span class="sourceLineNo">294</span> this.seqId = seqId;<a name="line.294"></a> -<span class="sourceLineNo">295</span> }<a name="line.295"></a> -<span class="sourceLineNo">296</span><a name="line.296"></a> -<span class="sourceLineNo">297</span> // multi-version concurrency control version. default value is 0, aka do not care.<a name="line.297"></a> -<span class="sourceLineNo">298</span> private long seqId = 0;<a name="line.298"></a> -<span class="sourceLineNo">299</span><a name="line.299"></a> -<span class="sourceLineNo">300</span> /** Dragon time over, return to normal business */<a name="line.300"></a> +<span class="sourceLineNo">042</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.42"></a> +<span class="sourceLineNo">043</span>/**<a name="line.43"></a> +<span class="sourceLineNo">044</span> * An HBase Key/Value. This is the fundamental HBase Type.<a name="line.44"></a> +<span class="sourceLineNo">045</span> * <p><a name="line.45"></a> +<span class="sourceLineNo">046</span> * HBase applications and users should use the Cell interface and avoid directly using KeyValue and<a name="line.46"></a> +<span class="sourceLineNo">047</span> * member functions not defined in Cell.<a name="line.47"></a> +<span class="sourceLineNo">048</span> * <p><a name="line.48"></a> +<span class="sourceLineNo">049</span> * If being used client-side, the primary methods to access individual fields are<a name="line.49"></a> +<span class="sourceLineNo">050</span> * {@link #getRowArray()}, {@link #getFamilyArray()}, {@link #getQualifierArray()},<a name="line.50"></a> +<span class="sourceLineNo">051</span> * {@link #getTimestamp()}, and {@link #getValueArray()}. These methods allocate new byte arrays<a name="line.51"></a> +<span class="sourceLineNo">052</span> * and return copies. Avoid their use server-side.<a name="line.52"></a> +<span class="sourceLineNo">053</span> * <p><a name="line.53"></a> +<span class="sourceLineNo">054</span> * Instances of this class are immutable. They do not implement Comparable but Comparators are<a name="line.54"></a> +<span class="sourceLineNo">055</span> * provided. Comparators change with context, whether user table or a catalog table comparison. Its<a name="line.55"></a> +<span class="sourceLineNo">056</span> * critical you use the appropriate comparator. There are Comparators for normal HFiles, Meta's<a name="line.56"></a> +<span class="sourceLineNo">057</span> * Hfiles, and bloom filter keys.<a name="line.57"></a> +<span class="sourceLineNo">058</span> * <p><a name="line.58"></a> +<span class="sourceLineNo">059</span> * KeyValue wraps a byte array and takes offsets and lengths into passed array at where to start<a name="line.59"></a> +<span class="sourceLineNo">060</span> * interpreting the content as KeyValue. The KeyValue format inside a byte array is:<a name="line.60"></a> +<span class="sourceLineNo">061</span> * <code>&lt;keylength&gt; &lt;valuelength&gt; &lt;key&gt; &lt;value&gt;</code> Key is further<a name="line.61"></a> +<span class="sourceLineNo">062</span> * decomposed as: <code>&lt;rowlength&gt; &lt;row&gt; &lt;columnfamilylength&gt;<a name="line.62"></a> +<span class="sourceLineNo">063</span> * &lt;columnfamily&gt; &lt;columnqualifier&gt;<a name="line.63"></a> +<span class="sourceLineNo">064</span> * &lt;timestamp&gt; &lt;keytype&gt;</code> The <code>rowlength</code> maximum is<a name="line.64"></a> +<span class="sourceLineNo">065</span> * <code>Short.MAX_SIZE</code>, column family length maximum is <code>Byte.MAX_SIZE</code>, and<a name="line.65"></a> +<span class="sourceLineNo">066</span> * column qualifier + key length must be &lt; <code>Integer.MAX_SIZE</code>. The column does not<a name="line.66"></a> +<span class="sourceLineNo">067</span> * contain the family/qualifier delimiter, {@link #COLUMN_FAMILY_DELIMITER}<br><a name="line.67"></a> +<span class="sourceLineNo">068</span> * KeyValue can optionally contain Tags. When it contains tags, it is added in the byte array after<a name="line.68"></a> +<span class="sourceLineNo">069</span> * the value part. The format for this part is: <code>&lt;tagslength&gt;&lt;tagsbytes&gt;</code>.<a name="line.69"></a> +<span class="sourceLineNo">070</span> * <code>tagslength</code> maximum is <code>Short.MAX_SIZE</code>. The <code>tagsbytes</code><a name="line.70"></a> +<span class="sourceLineNo">071</span> * contain one or more tags where as each tag is of the form<a name="line.71"></a> +<span class="sourceLineNo">072</span> * <code>&lt;taglength&gt;&lt;tagtype&gt;&lt;tagbytes&gt;</code>. <code>tagtype</code> is one byte<a name="line.72"></a> +<span class="sourceLineNo">073</span> * and <code>taglength</code> maximum is <code>Short.MAX_SIZE</code> and it includes 1 byte type<a name="line.73"></a> +<span class="sourceLineNo">074</span> * length and actual tag bytes length.<a name="line.74"></a> +<span class="sourceLineNo">075</span> */<a name="line.75"></a> +<span class="sourceLineNo">076</span>@InterfaceAudience.Private<a name="line.76"></a> +<span class="sourceLineNo">077</span>public class KeyValue implements ExtendedCell {<a name="line.77"></a> +<span class="sourceLineNo">078</span> private static final ArrayList<Tag> EMPTY_ARRAY_LIST = new ArrayList<>();<a name="line.78"></a> +<span class="sourceLineNo">079</span><a name="line.79"></a> +<span class="sourceLineNo">080</span> private static final Log LOG = LogFactory.getLog(KeyValue.class);<a name="line.80"></a> +<span class="sourceLineNo">081</span><a name="line.81"></a> +<span class="sourceLineNo">082</span> public static final long FIXED_OVERHEAD = ClassSize.OBJECT + // the KeyValue object itself<a name="line.82"></a> +<span class="sourceLineNo">083</span> ClassSize.REFERENCE + // pointer to "bytes"<a name="line.83"></a> +<span class="sourceLineNo">084</span> 2 * Bytes.SIZEOF_INT + // offset, length<a name="line.84"></a> +<span class="sourceLineNo">085</span> Bytes.SIZEOF_LONG;// memstoreTS<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> * Colon character in UTF-8<a name="line.88"></a> +<span class="sourceLineNo">089</span> */<a name="line.89"></a> +<span class="sourceLineNo">090</span> public static final char COLUMN_FAMILY_DELIMITER = ':';<a name="line.90"></a> +<span class="sourceLineNo">091</span><a name="line.91"></a> +<span class="sourceLineNo">092</span> public static final byte[] COLUMN_FAMILY_DELIM_ARRAY =<a name="line.92"></a> +<span class="sourceLineNo">093</span> new byte[]{COLUMN_FAMILY_DELIMITER};<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> * Comparator for plain key/values; i.e. non-catalog table key/values. Works on Key portion<a name="line.96"></a> +<span class="sourceLineNo">097</span> * of KeyValue only.<a name="line.97"></a> +<span class="sourceLineNo">098</span> * @deprecated Use {@link CellComparator#getInstance()} instead. Deprecated for hbase 2.0, remove for hbase 3.0.<a name="line.98"></a> +<span class="sourceLineNo">099</span> */<a name="line.99"></a> +<span class="sourceLineNo">100</span> @Deprecated<a name="line.100"></a> +<span class="sourceLineNo">101</span> public static final KVComparator COMPARATOR = new KVComparator();<a name="line.101"></a> +<span class="sourceLineNo">102</span> /**<a name="line.102"></a> +<span class="sourceLineNo">103</span> * A {@link KVComparator} for <code>hbase:meta</code> catalog table<a name="line.103"></a> +<span class="sourceLineNo">104</span> * {@link KeyValue}s.<a name="line.104"></a> +<span class="sourceLineNo">105</span> * @deprecated Use {@link CellComparatorImpl#META_COMPARATOR} instead. Deprecated for hbase 2.0, remove for hbase 3.0.<a name="line.105"></a> +<span class="sourceLineNo">106</span> */<a name="line.106"></a> +<span class="sourceLineNo">107</span> @Deprecated<a name="line.107"></a> +<span class="sourceLineNo">108</span> public static final KVComparator META_COMPARATOR = new MetaComparator();<a name="line.108"></a> +<span class="sourceLineNo">109</span><a name="line.109"></a> +<span class="sourceLineNo">110</span> /** Size of the key length field in bytes*/<a name="line.110"></a> +<span class="sourceLineNo">111</span> public static final int KEY_LENGTH_SIZE = Bytes.SIZEOF_INT;<a name="line.111"></a> +<span class="sourceLineNo">112</span><a name="line.112"></a> +<span class="sourceLineNo">113</span> /** Size of the key type field in bytes */<a name="line.113"></a> +<span class="sourceLineNo">114</span> public static final int TYPE_SIZE = Bytes.SIZEOF_BYTE;<a name="line.114"></a> +<span class="sourceLineNo">115</span><a name="line.115"></a> +<span class="sourceLineNo">116</span> /** Size of the row length field in bytes */<a name="line.116"></a> +<span class="sourceLineNo">117</span> public static final int ROW_LENGTH_SIZE = Bytes.SIZEOF_SHORT;<a name="line.117"></a> +<span class="sourceLineNo">118</span><a name="line.118"></a> +<span class="sourceLineNo">119</span> /** Size of the family length field in bytes */<a name="line.119"></a> +<span class="sourceLineNo">120</span> public static final int FAMILY_LENGTH_SIZE = Bytes.SIZEOF_BYTE;<a name="line.120"></a> +<span class="sourceLineNo">121</span><a name="line.121"></a> +<span class="sourceLineNo">122</span> /** Size of the timestamp field in bytes */<a name="line.122"></a> +<span class="sourceLineNo">123</span> public static final int TIMESTAMP_SIZE = Bytes.SIZEOF_LONG;<a name="line.123"></a> +<span class="sourceLineNo">124</span><a name="line.124"></a> +<span class="sourceLineNo">125</span> // Size of the timestamp and type byte on end of a key -- a long + a byte.<a name="line.125"></a> +<span class="sourceLineNo">126</span> public static final int TIMESTAMP_TYPE_SIZE = TIMESTAMP_SIZE + TYPE_SIZE;<a name="line.126"></a> +<span class="sourceLineNo">127</span><a name="line.127"></a> +<span class="sourceLineNo">128</span> // Size of the length shorts and bytes in key.<a name="line.128"></a> +<span class="sourceLineNo">129</span> public static final int KEY_INFRASTRUCTURE_SIZE = ROW_LENGTH_SIZE<a name="line.129"></a> +<span class="sourceLineNo">130</span> + FAMILY_LENGTH_SIZE + TIMESTAMP_TYPE_SIZE;<a name="line.130"></a> +<span class="sourceLineNo">131</span><a name="line.131"></a> +<span class="sourceLineNo">132</span> // How far into the key the row starts at. First thing to read is the short<a name="line.132"></a> +<span class="sourceLineNo">133</span> // that says how long the row is.<a name="line.133"></a> +<span class="sourceLineNo">134</span> public static final int ROW_OFFSET =<a name="line.134"></a> +<span class="sourceLineNo">135</span> Bytes.SIZEOF_INT /*keylength*/ +<a name="line.135"></a> +<span class="sourceLineNo">136</span> Bytes.SIZEOF_INT /*valuelength*/;<a name="line.136"></a> +<span class="sourceLineNo">137</span><a name="line.137"></a> +<span class="sourceLineNo">138</span> public static final int ROW_KEY_OFFSET = ROW_OFFSET + ROW_LENGTH_SIZE;<a name="line.138"></a> +<span class="sourceLineNo">139</span><a name="line.139"></a> +<span class="sourceLineNo">140</span> // Size of the length ints in a KeyValue datastructure.<a name="line.140"></a> +<span class="sourceLineNo">141</span> public static final int KEYVALUE_INFRASTRUCTURE_SIZE = ROW_OFFSET;<a name="line.141"></a> +<span class="sourceLineNo">142</span><a name="line.142"></a> +<span class="sourceLineNo">143</span> /** Size of the tags length field in bytes */<a name="line.143"></a> +<span class="sourceLineNo">144</span> public static final int TAGS_LENGTH_SIZE = Bytes.SIZEOF_SHORT;<a name="line.144"></a> +<span class="sourceLineNo">145</span><a name="line.145"></a> +<span class="sourceLineNo">146</span> public static final int KEYVALUE_WITH_TAGS_INFRASTRUCTURE_SIZE = ROW_OFFSET + TAGS_LENGTH_SIZE;<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> * Computes the number of bytes that a <code>KeyValue</code> instance with the provided<a name="line.149"></a> +<span class="sourceLineNo">150</span> * characteristics would take up for its underlying data structure.<a name="line.150"></a> +<span class="sourceLineNo">151</span> *<a name="line.151"></a> +<span class="sourceLineNo">152</span> * @param rlength row length<a name="line.152"></a> +<span class="sourceLineNo">153</span> * @param flength family length<a name="line.153"></a> +<span class="sourceLineNo">154</span> * @param qlength qualifier length<a name="line.154"></a> +<span class="sourceLineNo">155</span> * @param vlength value length<a name="line.155"></a> +<span class="sourceLineNo">156</span> *<a name="line.156"></a> +<span class="sourceLineNo">157</span> * @return the <code>KeyValue</code> data structure length<a name="line.157"></a> +<span class="sourceLineNo">158</span> */<a name="line.158"></a> +<span class="sourceLineNo">159</span> public static long getKeyValueDataStructureSize(int rlength,<a name="line.159"></a> +<span class="sourceLineNo">160</span> int flength, int qlength, int vlength) {<a name="line.160"></a> +<span class="sourceLineNo">161</span> return KeyValue.KEYVALUE_INFRASTRUCTURE_SIZE<a name="line.161"></a> +<span class="sourceLineNo">162</span> + getKeyDataStructureSize(rlength, flength, qlength) + vlength;<a name="line.162"></a> +<span class="sourceLineNo">163</span> }<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> * Computes the number of bytes that a <code>KeyValue</code> instance with the provided<a name="line.166"></a> +<span class="sourceLineNo">167</span> * characteristics would take up for its underlying data structure.<a name="line.167"></a> +<span class="sourceLineNo">168</span> *<a name="line.168"></a> +<span class="sourceLineNo">169</span> * @param rlength row length<a name="line.169"></a> +<span class="sourceLineNo">170</span> * @param flength family length<a name="line.170"></a> +<span class="sourceLineNo">171</span> * @param qlength qualifier length<a name="line.171"></a> +<span class="sourceLineNo">172</span> * @param vlength value length<a name="line.172"></a> +<span class="sourceLineNo">173</span> * @param tagsLength total length of the tags<a name="line.173"></a> +<span class="sourceLineNo">174</span> *<a name="line.174"></a> +<span class="sourceLineNo">175</span> * @return the <code>KeyValue</code> data structure length<a name="line.175"></a> +<span class="sourceLineNo">176</span> */<a name="line.176"></a> +<span class="sourceLineNo">177</span> public static long getKeyValueDataStructureSize(int rlength, int flength, int qlength,<a name="line.177"></a> +<span class="sourceLineNo">178</span> int vlength, int tagsLength) {<a name="line.178"></a> +<span class="sourceLineNo">179</span> if (tagsLength == 0) {<a name="line.179"></a> +<span class="sourceLineNo">180</span> return getKeyValueDataStructureSize(rlength, flength, qlength, vlength);<a name="line.180"></a> +<span class="sourceLineNo">181</span> }<a name="line.181"></a> +<span class="sourceLineNo">182</span> return KeyValue.KEYVALUE_WITH_TAGS_INFRASTRUCTURE_SIZE<a name="line.182"></a> +<span class="sourceLineNo">183</span> + getKeyDataStructureSize(rlength, flength, qlength) + vlength + tagsLength;<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> /**<a name="line.186"></a> +<span class="sourceLineNo">187</span> * Computes the number of bytes that a <code>KeyValue</code> instance with the provided<a name="line.187"></a> +<span class="sourceLineNo">188</span> * characteristics would take up for its underlying data structure.<a name="line.188"></a> +<span class="sourceLineNo">189</span> *<a name="line.189"></a> +<span class="sourceLineNo">190</span> * @param klength key length<a name="line.190"></a> +<span class="sourceLineNo">191</span> * @param vlength value length<a name="line.191"></a> +<span class="sourceLineNo">192</span> * @param tagsLength total length of the tags<a name="line.192"></a> +<span class="sourceLineNo">193</span> *<a name="line.193"></a> +<span class="sourceLineNo">194</span> * @return the <code>KeyValue</code> data structure length<a name="line.194"></a> +<span class="sourceLineNo">195</span> */<a name="line.195"></a> +<span class="sourceLineNo">196</span> public static long getKeyValueDataStructureSize(int klength, int vlength, int tagsLength) {<a name="line.196"></a> +<span class="sourceLineNo">197</span> if (tagsLength == 0) {<a name="line.197"></a> +<span class="sourceLineNo">198</span> return KeyValue.KEYVALUE_INFRASTRUCTURE_SIZE + klength + vlength;<a name="line.198"></a> +<span class="sourceLineNo">199</span> }<a name="line.199"></a> +<span class="sourceLineNo">200</span> return KeyValue.KEYVALUE_WITH_TAGS_INFRASTRUCTURE_SIZE + klength + vlength + tagsLength;<a name="line.200"></a> +<span class="sourceLineNo">201</span> }<a name="line.201"></a> +<span class="sourceLineNo">202</span><a name="line.202"></a> +<span class="sourceLineNo">203</span> /**<a name="line.203"></a> +<span class="sourceLineNo">204</span> * Computes the number of bytes that a <code>KeyValue</code> instance with the provided<a name="line.204"></a> +<span class="sourceLineNo">205</span> * characteristics would take up in its underlying data structure for the key.<a name="line.205"></a> +<span class="sourceLineNo">206</span> *<a name="line.206"></a> +<span class="sourceLineNo">207</span> * @param rlength row length<a name="line.207"></a> +<span class="sourceLineNo">208</span> * @param flength family length<a name="line.208"></a> +<span class="sourceLineNo">209</span> * @param qlength qualifier length<a name="line.209"></a> +<span class="sourceLineNo">210</span> *<a name="line.210"></a> +<span class="sourceLineNo">211</span> * @return the key data structure length<a name="line.211"></a> +<span class="sourceLineNo">212</span> */<a name="line.212"></a> +<span class="sourceLineNo">213</span> public static long getKeyDataStructureSize(int rlength, int flength, int qlength) {<a name="line.213"></a> +<span class="sourceLineNo">214</span> return KeyValue.KEY_INFRASTRUCTURE_SIZE + rlength + flength + qlength;<a name="line.214"></a> +<span class="sourceLineNo">215</span> }<a name="line.215"></a> +<span class="sourceLineNo">216</span><a name="line.216"></a> +<span class="sourceLineNo">217</span> /**<a name="line.217"></a> +<span class="sourceLineNo">218</span> * Key type.<a name="line.218"></a> +<span class="sourceLineNo">219</span> * Has space for other key types to be added later. Cannot rely on<a name="line.219"></a> +<span class="sourceLineNo">220</span> * enum ordinals . They change if item is removed or moved. Do our own codes.<a name="line.220"></a> +<span class="sourceLineNo">221</span> */<a name="line.221"></a> +<span class="sourceLineNo">222</span> public static enum Type {<a name="line.222"></a> +<span class="sourceLineNo">223</span> Minimum((byte)0),<a name="line.223"></a> +<span class="sourceLineNo">224</span> Put((byte)4),<a name="line.224"></a> +<span class="sourceLineNo">225</span><a name="line.225"></a> +<span class="sourceLineNo">226</span> Delete((byte)8),<a name="line.226"></a> +<span class="sourceLineNo">227</span> DeleteFamilyVersion((byte)10),<a name="line.227"></a> +<span class="sourceLineNo">228</span> DeleteColumn((byte)12),<a name="line.228"></a> +<span class="sourceLineNo">229</span> DeleteFamily((byte)14),<a name="line.229"></a> +<span class="sourceLineNo">230</span><a name="line.230"></a> +<span class="sourceLineNo">231</span> // Maximum is used when searching; you look from maximum on down.<a name="line.231"></a> +<span class="sourceLineNo">232</span> Maximum((byte)255);<a name="line.232"></a> +<span class="sourceLineNo">233</span><a name="line.233"></a> +<span class="sourceLineNo">234</span> private final byte code;<a name="line.234"></a> +<span class="sourceLineNo">235</span><a name="line.235"></a> +<span class="sourceLineNo">236</span> Type(final byte c) {<a name="line.236"></a> +<span class="sourceLineNo">237</span> this.code = c;<a name="line.237"></a> +<span class="sourceLineNo">238</span> }<a name="line.238"></a> +<span class="sourceLineNo">239</span><a name="line.239"></a> +<span class="sourceLineNo">240</span> public byte getCode() {<a name="line.240"></a> +<span class="sourceLineNo">241</span> return this.code;<a name="line.241"></a> +<span class="sourceLineNo">242</span> }<a name="line.242"></a> +<span class="sourceLineNo">243</span><a name="line.243"></a> +<span class="sourceLineNo">244</span> private static Type[] codeArray = new Type[256];<a name="line.244"></a> +<span class="sourceLineNo">245</span><a name="line.245"></a> +<span class="sourceLineNo">246</span> static {<a name="line.246"></a> +<span class="sourceLineNo">247</span> for (Type t : Type.values()) {<a name="line.247"></a> +<span class="sourceLineNo">248</span> codeArray[t.code & 0xff] = t;<a name="line.248"></a> +<span class="sourceLineNo">249</span> }<a name="line.249"></a> +<span class="sourceLineNo">250</span> }<a name="line.250"></a> +<span class="sourceLineNo">251</span><a name="line.251"></a> +<span class="sourceLineNo">252</span> /**<a name="line.252"></a> +<span class="sourceLineNo">253</span> * Cannot rely on enum ordinals . They change if item is removed or moved.<a name="line.253"></a> +<span class="sourceLineNo">254</span> * Do our own codes.<a name="line.254"></a> +<span class="sourceLineNo">255</span> * @param b<a name="line.255"></a> +<span class="sourceLineNo">256</span> * @return Type associated with passed code.<a name="line.256"></a> +<span class="sourceLineNo">257</span> */<a name="line.257"></a> +<span class="sourceLineNo">258</span> public static Type codeToType(final byte b) {<a name="line.258"></a> +<span class="sourceLineNo">259</span> Type t = codeArray[b & 0xff];<a name="line.259"></a> +<span class="sourceLineNo">260</span> if (t != null) {<a name="line.260"></a> +<span class="sourceLineNo">261</span> return t;<a name="line.261"></a> +<span class="sourceLineNo">262</span> }<a name="line.262"></a> +<span class="sourceLineNo">263</span> throw new RuntimeException("Unknown code " + b);<a name="line.263"></a> +<span class="sourceLineNo">264</span> }<a name="line.264"></a> +<span class="sourceLineNo">265</span> }<a name="line.265"></a> +<span class="sourceLineNo">266</span><a name="line.266"></a> +<span class="sourceLineNo">267</span> /**<a name="line.267"></a> +<span class="sourceLineNo">268</span> * Lowest possible key.<a name="line.268"></a> +<span class="sourceLineNo">269</span> * Makes a Key with highest possible Timestamp, empty row and column. No<a name="line.269"></a> +<span class="sourceLineNo">270</span> * key can be equal or lower than this one in memstore or in store file.<a name="line.270"></a> +<span class="sourceLineNo">271</span> */<a name="line.271"></a> +<span class="sourceLineNo">272</span> public static final KeyValue LOWESTKEY =<a name="line.272"></a> +<span class="sourceLineNo">273</span> new KeyValue(HConstants.EMPTY_BYTE_ARRAY, HConstants.LATEST_TIMESTAMP);<a name="line.273"></a> +<span class="sourceLineNo">274</span><a name="line.274"></a> +<span class="sourceLineNo">275</span> ////<a name="line.275"></a> +<span class="sourceLineNo">276</span> // KeyValue core instance fields.<a name="line.276"></a> +<span class="sourceLineNo">277</span> protected byte [] bytes = null; // an immutable byte array that contains the KV<a name="line.277"></a> +<span class="sourceLineNo">278</span> protected int offset = 0; // offset into bytes buffer KV starts at<a name="line.278"></a> +<span class="sourceLineNo">279</span> protected int length = 0; // length of the KV starting from offset.<a name="line.279"></a> +<span class="sourceLineNo">280</span><a name="line.280"></a> +<span class="sourceLineNo">281</span> /** Here be dragons **/<a name="line.281"></a> +<span class="sourceLineNo">282</span><a name="line.282"></a> +<span class="sourceLineNo">283</span> /**<a name="line.283"></a> +<span class="sourceLineNo">284</span> * used to achieve atomic operations in the memstore.<a name="line.284"></a> +<span class="sourceLineNo">285</span> */<a name="line.285"></a> +<span class="sourceLineNo">286</span> @Override<a name="line.286"></a> +<span class="sourceLineNo">287</span> public long getSequenceId() {<a name="line.287"></a> +<span class="sourceLineNo">288</span> return seqId;<a name="line.288"></a> +<span class="sourceLineNo">289</span> }<a name="line.289"></a> +<span class="sourceLineNo">290</span><a name="line.290"></a> +<span class="sourceLineNo">291</span> @Override<a name="line.291"></a> +<span class="sourceLineNo">292</span> public void setSequenceId(long seqId) {<a name="line.292"></a> +<span class="sourceLineNo">293</span> this.seqId = seqId;<a name="line.293"></a> +<span class="sourceLineNo">294</span> }<a name="line.294"></a> +<span class="sourceLineNo">295</span><a name="line.295"></a> +<span class="sourceLineNo">296</span> // multi-version concurrency control version. default value is 0, aka do not care.<a name="line.296"></a> +<span class="sourceLineNo">297</span> private long seqId = 0;<a name="line.297"></a> +<span class="sourceLineNo">298</span><a name="line.298"></a> +<span class="sourceLineNo">299</span> /** Dragon time over, return to normal business */<a name="line.299"></a> +<span class="sourceLineNo">300</span><a name="line.300"></a> <span class="sourceLineNo">301</span><a name="line.301"></a> -<span class="sourceLineNo">302</span><a name="line.302"></a> -<span class="sourceLineNo">303</span> /** Writable Constructor -- DO NOT USE */<a name="line.303"></a> -<span class="sourceLineNo">304</span> public KeyValue() {}<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> * Creates a KeyValue from the start of the specified byte array.<a name="line.307"></a> -<span class="sourceLineNo">308</span> * Presumes <code>bytes</code> content is formatted as a KeyValue blob.<a name="line.308"></a> -<span class="sourceLineNo">309</span> * @param bytes byte array<a name="line.309"></a> -<span class="sourceLineNo">310</span> */<a name="line.310"></a> -<span class="sourceLineNo">311</span> public KeyValue(final byte [] bytes) {<a name="line.311"></a> -<span class="sourceLineNo">312</span> this(bytes, 0);<a name="line.312"></a> -<span class="sourceLineNo">313</span> }<a name="line.313"></a> -<span class="sourceLineNo">314</span><a name="line.314"></a> -<span class="sourceLineNo">315</span> /**<a name="line.315"></a> -<span class="sourceLineNo">316</span> * Creates a KeyValue from the specified byte array and offset.<a name="line.316"></a> -<span class="sourceLineNo">317</span> * Presumes <code>bytes</code> content starting at <code>offset</code> is<a name="line.317"></a> -<span class="sourceLineNo">318</span> * formatted as a KeyValue blob.<a name="line.318"></a> -<span class="sourceLineNo">319</span> * @param bytes byte array<a name="line.319"></a> -<span class="sourceLineNo">320</span> * @param offset offset to start of KeyValue<a name="line.320"></a> -<span class="sourceLineNo">321</span> */<a name="line.321"></a> -<span class="sourceLineNo">322</span> public KeyValue(final byte [] bytes, final int offset) {<a name="line.322"></a> -<span class="sourceLineNo">323</span> this(bytes, offset, getLength(bytes, offset));<a name="line.323"></a> -<span class="sourceLineNo">324</span> }<a name="line.324"></a> -<span class="sourceLineNo">325</span><a name="line.325"></a> -<span class="sourceLineNo">326</span> /**<a name="line.326"></a> -<span class="sourceLineNo">327</span> * Creates a KeyValue from the specified byte array, starting at offset, and<a name="line.327"></a> -<span class="sourceLineNo">328</span> * for length <code>length</code>.<a name="line.328"></a> -<span class="sourceLineNo">329</span> * @param bytes byte array<a name="line.329"></a> -<span class="sourceLineNo">330</span> * @param offset offset to start of the KeyValue<a name="line.330"></a> -<span class="sourceLineNo">331</span> * @param length length of the KeyValue<a name="line.331"></a> -<span class="sourceLineNo">332</span> */<a name="line.332"></a> -<span class="sourceLineNo">333</span> public KeyValue(final byte [] bytes, final int offset, final int length) {<a name="line.333"></a> -<span class="sourceLineNo">334</span> this.bytes = bytes;<a name="line.334"></a> -<span class="sourceLineNo">335</span> this.offset = offset;<a name="line.335"></a> -<span class="sourceLineNo">336</span> this.length = length;<a name="line.336"></a> -<span class="sourceLineNo">337</span> }<a name="line.337"></a> -<span class="sourceLineNo">338</span><a name="line.338"></a> -<span class="sourceLineNo">339</span> /**<a name="line.339"></a> -<span class="sourceLineNo">340</span> * Creates a KeyValue from the specified byte array, starting at offset, and<a name="line.340"></a> -<span class="sourceLineNo">341</span> * for length <code>length</code>.<a name="line.341"></a> -<span class="sourceLineNo">342</span> *<a name="line.342"></a> -<span class="sourceLineNo">343</span> * @param bytes byte array<a name="line.343"></a> -<span class="sourceLineNo">344</span> * @param offset offset to start of the KeyValue<a name="line.344"></a> -<span class="sourceLineNo">345</span> * @param length length of the KeyValue<a name="line.345"></a> -<span class="sourceLineNo">346</span> * @param ts<a name="line.346"></a> -<span class="sourceLineNo">347</span> */<a name="line.347"></a> -<span class="sourceLineNo">348</span> public KeyValue(final byte[] bytes, final int offset, final int length, long ts) {<a name="line.348"></a> -<span class="sourceLineNo">349</span> this(bytes, offset, length, null, 0, 0, null, 0, 0, ts, Type.Maximum, null, 0, 0, null);<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> /** Constructors that build a new backing byte array from fields */<a name="line.352"></a> -<span class="sourceLineNo">353</span><a name="line.353"></a> -<span class="sourceLineNo">354</span> /**<a name="line.354"></a> -<span class="sourceLineNo">355</span> * Constructs KeyValue structure filled with null value.<a name="line.355"></a> -<span class="sourceLineNo">356</span> * Sets type to {@link KeyValue.Type#Maximum}<a name="line.356"></a> -<span class="sourceLineNo">357</span> * @param row - row key (arbitrary byte array)<a name="line.357"></a> -<span class="sourceLineNo">358</span> * @param timestamp<a name="line.358"></a> -<span class="sourceLineNo">359</span> */<a name="line.359"></a> -<span class="sourceLineNo">360</span> public KeyValue(final byte [] row, final long timestamp) {<a name="line.360"></a> -<span class="sourceLineNo">361</span> this(row, null, null, timestamp, Type.Maximum, null);<a name="line.361"></a> -<span class="sourceLineNo">362</span> }<a name="line.362"></a> -<span class="sourceLineNo">363</span><a name="line.363"></a> -<span class="sourceLineNo">364</span> /**<a name="line.364"></a> -<span class="sourceLineNo">365</span> * Constructs KeyValue structure filled with null value.<a name="line.365"></a> -<span class="sourceLineNo">366</span> * @param row - row key (arbitrary byte array)<a name="line.366"></a> -<span class="sourceLineNo">367</span> * @param timestamp<a name="line.367"></a> -<span class="sourceLineNo">368</span> */<a name="line.368"></a> -<span 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name="line.379"></a> -<span class="sourceLineNo">380</span> public KeyValue(final byte [] row, final byte [] family,<a name="line.380"></a> -<span class="sourceLineNo">381</span> final byte [] qualifier) {<a name="line.381"></a> -<span class="sourceLineNo">382</span> this(row, family, qualifier, HConstants.LATEST_TIMESTAMP, Type.Maximum);<a name="line.382"></a> -<span class="sourceLineNo">383</span> }<a name="line.383"></a> -<span class="sourceLineNo">384</span><a name="line.384"></a> -<span class="sourceLineNo">385</span> /**<a name="line.385"></a> -<span class="sourceLineNo">386</span> * Constructs KeyValue structure as a put filled with specified values and<a name="line.386"></a> -<span class="sourceLineNo">387</span> * LATEST_TIMESTAMP.<a name="line.387"></a> -<span class="sourceLineNo">388</span> * @param row - row key (arbitrary byte array)<a name="line.388"></a> -<span class="sourceLineNo">389</span> * @param family family name<a name="line.389"></a> -<span 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name="line.400"></a> -<span class="sourceLineNo">401</span> * @param qualifier column qualifier<a name="line.401"></a> -<span class="sourceLineNo">402</span> * @param timestamp version timestamp<a name="line.402"></a> -<span class="sourceLineNo">403</span> * @param type key type<a name="line.403"></a> -<span class="sourceLineNo">404</span> * @throws IllegalArgumentException<a name="line.404"></a> -<span class="sourceLineNo">405</span> */<a name="line.405"></a> -<span class="sourceLineNo">406</span> public KeyValue(final byte[] row, final byte[] family,<a name="line.406"></a> -<span class="sourceLineNo">407</span> final byte[] qualifier, final long timestamp, Type type) {<a name="line.407"></a> -<span class="sourceLineNo">408</span> this(row, family, qualifier, timestamp, type, null);<a name="line.408"></a> -<span class="sourceLineNo">409</span> }<a name="line.409"></a> -<span class="sourceLineNo">410</span><a name="line.410"></a> -<span class="sourceLineNo">411</span> /**<a name="line.411"></a> -<span class="sourceLineNo">412</span> * Constructs KeyValue structure filled with specified values.<a name="line.412"></a> -<span class="sourceLineNo">413</span> * @param row row key<a name="line.413"></a> -<span class="sourceLineNo">414</span> * @param family family name<a name="line.414"></a> -<span class="sourceLineNo">415</span> * @param qualifier column qualifier<a name="line.415"></a> -<span class="sourceLineNo">416</span> * @param timestamp version timestamp<a name="line.416"></a> -<span class="sourceLineNo">417</span> * @param value column value<a name="line.417"></a> -<span class="sourceLineNo">418</span> * @throws IllegalArgumentException<a name="line.418"></a> -<span class="sourceLineNo">419</span> */<a name="line.419"></a> -<span class="sourceLineNo">420</span> public KeyValue(final byte[] row, final byte[] family,<a name="line.420"></a> -<span class="sourceLineNo">421</span> final byte[] qualifier, final long timestamp, final byte[] value) {<a 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<TRUNCATED>
