http://git-wip-us.apache.org/repos/asf/hbase-site/blob/1490b3ab/apidocs/src-html/org/apache/hadoop/hbase/filter/ParseFilter.html ---------------------------------------------------------------------- diff --git a/apidocs/src-html/org/apache/hadoop/hbase/filter/ParseFilter.html b/apidocs/src-html/org/apache/hadoop/hbase/filter/ParseFilter.html index 8e035c5..b7697e0 100644 --- a/apidocs/src-html/org/apache/hadoop/hbase/filter/ParseFilter.html +++ b/apidocs/src-html/org/apache/hadoop/hbase/filter/ParseFilter.html @@ -40,842 +40,871 @@ <span class="sourceLineNo">032</span><a name="line.32"></a> <span class="sourceLineNo">033</span>import org.apache.commons.logging.Log;<a name="line.33"></a> <span class="sourceLineNo">034</span>import org.apache.commons.logging.LogFactory;<a name="line.34"></a> -<span class="sourceLineNo">035</span>import org.apache.hadoop.hbase.classification.InterfaceAudience;<a name="line.35"></a> -<span class="sourceLineNo">036</span>import org.apache.hadoop.hbase.filter.CompareFilter.CompareOp;<a name="line.36"></a> -<span class="sourceLineNo">037</span>import org.apache.hadoop.hbase.util.Bytes;<a name="line.37"></a> -<span class="sourceLineNo">038</span><a name="line.38"></a> -<span class="sourceLineNo">039</span>/**<a name="line.39"></a> -<span class="sourceLineNo">040</span> * This class allows a user to specify a filter via a string<a name="line.40"></a> -<span class="sourceLineNo">041</span> * The string is parsed using the methods of this class and<a name="line.41"></a> -<span class="sourceLineNo">042</span> * a filter object is constructed. This filter object is then wrapped<a name="line.42"></a> -<span class="sourceLineNo">043</span> * in a scanner object which is then returned<a name="line.43"></a> -<span class="sourceLineNo">044</span> * <p><a name="line.44"></a> -<span class="sourceLineNo">045</span> * This class addresses the HBASE-4168 JIRA. More documentation on this<a name="line.45"></a> -<span class="sourceLineNo">046</span> * Filter Language can be found at: https://issues.apache.org/jira/browse/HBASE-4176<a name="line.46"></a> -<span class="sourceLineNo">047</span> */<a name="line.47"></a> -<span class="sourceLineNo">048</span>@InterfaceAudience.Public<a name="line.48"></a> -<span class="sourceLineNo">049</span>public class ParseFilter {<a name="line.49"></a> -<span class="sourceLineNo">050</span> private static final Log LOG = LogFactory.getLog(ParseFilter.class);<a name="line.50"></a> -<span class="sourceLineNo">051</span><a name="line.51"></a> -<span class="sourceLineNo">052</span> private static HashMap<ByteBuffer, Integer> operatorPrecedenceHashMap;<a name="line.52"></a> -<span class="sourceLineNo">053</span> private static HashMap<String, String> filterHashMap;<a name="line.53"></a> -<span class="sourceLineNo">054</span><a name="line.54"></a> -<span class="sourceLineNo">055</span> static {<a name="line.55"></a> -<span class="sourceLineNo">056</span> // Registers all the filter supported by the Filter Language<a name="line.56"></a> -<span class="sourceLineNo">057</span> filterHashMap = new HashMap<>();<a name="line.57"></a> -<span class="sourceLineNo">058</span> filterHashMap.put("KeyOnlyFilter", ParseConstants.FILTER_PACKAGE + "." +<a name="line.58"></a> -<span class="sourceLineNo">059</span> "KeyOnlyFilter");<a name="line.59"></a> -<span class="sourceLineNo">060</span> filterHashMap.put("FirstKeyOnlyFilter", ParseConstants.FILTER_PACKAGE + "." +<a name="line.60"></a> -<span class="sourceLineNo">061</span> "FirstKeyOnlyFilter");<a name="line.61"></a> -<span class="sourceLineNo">062</span> filterHashMap.put("PrefixFilter", ParseConstants.FILTER_PACKAGE + "." +<a name="line.62"></a> -<span class="sourceLineNo">063</span> "PrefixFilter");<a name="line.63"></a> -<span class="sourceLineNo">064</span> filterHashMap.put("ColumnPrefixFilter", ParseConstants.FILTER_PACKAGE + "." +<a name="line.64"></a> -<span class="sourceLineNo">065</span> "ColumnPrefixFilter");<a name="line.65"></a> -<span class="sourceLineNo">066</span> filterHashMap.put("MultipleColumnPrefixFilter", ParseConstants.FILTER_PACKAGE + "." +<a name="line.66"></a> -<span class="sourceLineNo">067</span> "MultipleColumnPrefixFilter");<a name="line.67"></a> -<span class="sourceLineNo">068</span> filterHashMap.put("ColumnCountGetFilter", ParseConstants.FILTER_PACKAGE + "." +<a name="line.68"></a> -<span class="sourceLineNo">069</span> "ColumnCountGetFilter");<a name="line.69"></a> -<span class="sourceLineNo">070</span> filterHashMap.put("PageFilter", ParseConstants.FILTER_PACKAGE + "." +<a name="line.70"></a> -<span class="sourceLineNo">071</span> "PageFilter");<a name="line.71"></a> -<span class="sourceLineNo">072</span> filterHashMap.put("ColumnPaginationFilter", ParseConstants.FILTER_PACKAGE + "." +<a name="line.72"></a> -<span class="sourceLineNo">073</span> "ColumnPaginationFilter");<a name="line.73"></a> -<span class="sourceLineNo">074</span> filterHashMap.put("InclusiveStopFilter", ParseConstants.FILTER_PACKAGE + "." +<a name="line.74"></a> -<span class="sourceLineNo">075</span> "InclusiveStopFilter");<a name="line.75"></a> -<span class="sourceLineNo">076</span> filterHashMap.put("TimestampsFilter", ParseConstants.FILTER_PACKAGE + "." +<a name="line.76"></a> -<span class="sourceLineNo">077</span> "TimestampsFilter");<a name="line.77"></a> -<span class="sourceLineNo">078</span> filterHashMap.put("RowFilter", ParseConstants.FILTER_PACKAGE + "." +<a name="line.78"></a> -<span class="sourceLineNo">079</span> "RowFilter");<a name="line.79"></a> -<span class="sourceLineNo">080</span> filterHashMap.put("FamilyFilter", ParseConstants.FILTER_PACKAGE + "." +<a name="line.80"></a> -<span class="sourceLineNo">081</span> "FamilyFilter");<a name="line.81"></a> -<span class="sourceLineNo">082</span> filterHashMap.put("QualifierFilter", ParseConstants.FILTER_PACKAGE + "." +<a name="line.82"></a> -<span class="sourceLineNo">083</span> "QualifierFilter");<a name="line.83"></a> -<span class="sourceLineNo">084</span> filterHashMap.put("ValueFilter", ParseConstants.FILTER_PACKAGE + "." +<a name="line.84"></a> -<span class="sourceLineNo">085</span> "ValueFilter");<a name="line.85"></a> -<span class="sourceLineNo">086</span> filterHashMap.put("ColumnRangeFilter", ParseConstants.FILTER_PACKAGE + "." +<a name="line.86"></a> -<span class="sourceLineNo">087</span> "ColumnRangeFilter");<a name="line.87"></a> -<span class="sourceLineNo">088</span> filterHashMap.put("SingleColumnValueFilter", ParseConstants.FILTER_PACKAGE + "." +<a name="line.88"></a> -<span class="sourceLineNo">089</span> "SingleColumnValueFilter");<a name="line.89"></a> -<span class="sourceLineNo">090</span> filterHashMap.put("SingleColumnValueExcludeFilter", ParseConstants.FILTER_PACKAGE + "." +<a name="line.90"></a> -<span class="sourceLineNo">091</span> "SingleColumnValueExcludeFilter");<a name="line.91"></a> -<span class="sourceLineNo">092</span> filterHashMap.put("DependentColumnFilter", ParseConstants.FILTER_PACKAGE + "." +<a name="line.92"></a> -<span class="sourceLineNo">093</span> "DependentColumnFilter");<a name="line.93"></a> -<span class="sourceLineNo">094</span><a name="line.94"></a> -<span class="sourceLineNo">095</span> // Creates the operatorPrecedenceHashMap<a name="line.95"></a> -<span class="sourceLineNo">096</span> operatorPrecedenceHashMap = new HashMap<>();<a name="line.96"></a> -<span class="sourceLineNo">097</span> operatorPrecedenceHashMap.put(ParseConstants.SKIP_BUFFER, 1);<a name="line.97"></a> -<span class="sourceLineNo">098</span> operatorPrecedenceHashMap.put(ParseConstants.WHILE_BUFFER, 1);<a name="line.98"></a> -<span class="sourceLineNo">099</span> operatorPrecedenceHashMap.put(ParseConstants.AND_BUFFER, 2);<a name="line.99"></a> -<span class="sourceLineNo">100</span> operatorPrecedenceHashMap.put(ParseConstants.OR_BUFFER, 3);<a name="line.100"></a> -<span class="sourceLineNo">101</span> }<a name="line.101"></a> -<span class="sourceLineNo">102</span><a name="line.102"></a> -<span class="sourceLineNo">103</span> /**<a name="line.103"></a> -<span class="sourceLineNo">104</span> * Parses the filterString and constructs a filter using it<a name="line.104"></a> -<span class="sourceLineNo">105</span> * <p><a name="line.105"></a> -<span class="sourceLineNo">106</span> * @param filterString filter string given by the user<a name="line.106"></a> -<span class="sourceLineNo">107</span> * @return filter object we constructed<a name="line.107"></a> -<span class="sourceLineNo">108</span> */<a name="line.108"></a> -<span class="sourceLineNo">109</span> public Filter parseFilterString (String filterString)<a name="line.109"></a> -<span class="sourceLineNo">110</span> throws CharacterCodingException {<a name="line.110"></a> -<span class="sourceLineNo">111</span> return parseFilterString(Bytes.toBytes(filterString));<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> /**<a name="line.114"></a> -<span class="sourceLineNo">115</span> * Parses the filterString and constructs a filter using it<a name="line.115"></a> -<span class="sourceLineNo">116</span> * <p><a name="line.116"></a> -<span class="sourceLineNo">117</span> * @param filterStringAsByteArray filter string given by the user<a name="line.117"></a> -<span class="sourceLineNo">118</span> * @return filter object we constructed<a name="line.118"></a> -<span class="sourceLineNo">119</span> */<a name="line.119"></a> -<span class="sourceLineNo">120</span> public Filter parseFilterString (byte [] filterStringAsByteArray)<a name="line.120"></a> -<span class="sourceLineNo">121</span> throws CharacterCodingException {<a name="line.121"></a> -<span class="sourceLineNo">122</span> // stack for the operators and parenthesis<a name="line.122"></a> -<span class="sourceLineNo">123</span> Stack <ByteBuffer> operatorStack = new Stack<>();<a name="line.123"></a> -<span class="sourceLineNo">124</span> // stack for the filter objects<a name="line.124"></a> -<span class="sourceLineNo">125</span> Stack <Filter> filterStack = new Stack<>();<a name="line.125"></a> -<span class="sourceLineNo">126</span><a name="line.126"></a> -<span class="sourceLineNo">127</span> Filter filter = null;<a name="line.127"></a> -<span class="sourceLineNo">128</span> for (int i=0; i<filterStringAsByteArray.length; i++) {<a name="line.128"></a> -<span class="sourceLineNo">129</span> if (filterStringAsByteArray[i] == ParseConstants.LPAREN) {<a name="line.129"></a> -<span class="sourceLineNo">130</span> // LPAREN found<a name="line.130"></a> -<span class="sourceLineNo">131</span> operatorStack.push(ParseConstants.LPAREN_BUFFER);<a name="line.131"></a> -<span class="sourceLineNo">132</span> } else if (filterStringAsByteArray[i] == ParseConstants.WHITESPACE ||<a name="line.132"></a> -<span class="sourceLineNo">133</span> filterStringAsByteArray[i] == ParseConstants.TAB) {<a name="line.133"></a> -<span class="sourceLineNo">134</span> // WHITESPACE or TAB found<a name="line.134"></a> -<span class="sourceLineNo">135</span> continue;<a name="line.135"></a> -<span class="sourceLineNo">136</span> } else if (checkForOr(filterStringAsByteArray, i)) {<a name="line.136"></a> -<span class="sourceLineNo">137</span> // OR found<a name="line.137"></a> -<span class="sourceLineNo">138</span> i += ParseConstants.OR_ARRAY.length - 1;<a name="line.138"></a> -<span class="sourceLineNo">139</span> reduce(operatorStack, filterStack, ParseConstants.OR_BUFFER);<a name="line.139"></a> -<span class="sourceLineNo">140</span> operatorStack.push(ParseConstants.OR_BUFFER);<a name="line.140"></a> -<span class="sourceLineNo">141</span> } else if (checkForAnd(filterStringAsByteArray, i)) {<a name="line.141"></a> -<span class="sourceLineNo">142</span> // AND found<a name="line.142"></a> -<span class="sourceLineNo">143</span> i += ParseConstants.AND_ARRAY.length - 1;<a name="line.143"></a> -<span class="sourceLineNo">144</span> reduce(operatorStack, filterStack, ParseConstants.AND_BUFFER);<a name="line.144"></a> -<span class="sourceLineNo">145</span> operatorStack.push(ParseConstants.AND_BUFFER);<a name="line.145"></a> -<span class="sourceLineNo">146</span> } else if (checkForSkip(filterStringAsByteArray, i)) {<a name="line.146"></a> -<span class="sourceLineNo">147</span> // SKIP found<a name="line.147"></a> -<span class="sourceLineNo">148</span> i += ParseConstants.SKIP_ARRAY.length - 1;<a name="line.148"></a> -<span class="sourceLineNo">149</span> reduce(operatorStack, filterStack, ParseConstants.SKIP_BUFFER);<a name="line.149"></a> -<span class="sourceLineNo">150</span> operatorStack.push(ParseConstants.SKIP_BUFFER);<a name="line.150"></a> -<span class="sourceLineNo">151</span> } else if (checkForWhile(filterStringAsByteArray, i)) {<a name="line.151"></a> -<span class="sourceLineNo">152</span> // WHILE found<a name="line.152"></a> -<span class="sourceLineNo">153</span> i += ParseConstants.WHILE_ARRAY.length - 1;<a name="line.153"></a> -<span class="sourceLineNo">154</span> reduce(operatorStack, filterStack, ParseConstants.WHILE_BUFFER);<a name="line.154"></a> -<span class="sourceLineNo">155</span> operatorStack.push(ParseConstants.WHILE_BUFFER);<a name="line.155"></a> -<span class="sourceLineNo">156</span> } else if (filterStringAsByteArray[i] == ParseConstants.RPAREN) {<a name="line.156"></a> -<span class="sourceLineNo">157</span> // RPAREN found<a name="line.157"></a> -<span class="sourceLineNo">158</span> if (operatorStack.empty()) {<a name="line.158"></a> -<span class="sourceLineNo">159</span> throw new IllegalArgumentException("Mismatched parenthesis");<a name="line.159"></a> -<span class="sourceLineNo">160</span> }<a name="line.160"></a> -<span class="sourceLineNo">161</span> ByteBuffer argumentOnTopOfStack = operatorStack.peek();<a name="line.161"></a> -<span class="sourceLineNo">162</span> if (argumentOnTopOfStack.equals(ParseConstants.LPAREN_BUFFER)) {<a name="line.162"></a> -<span class="sourceLineNo">163</span> operatorStack.pop();<a name="line.163"></a> -<span class="sourceLineNo">164</span> continue;<a name="line.164"></a> -<span class="sourceLineNo">165</span> }<a name="line.165"></a> -<span class="sourceLineNo">166</span> while (!(argumentOnTopOfStack.equals(ParseConstants.LPAREN_BUFFER))) {<a name="line.166"></a> -<span class="sourceLineNo">167</span> filterStack.push(popArguments(operatorStack, filterStack));<a name="line.167"></a> -<span class="sourceLineNo">168</span> if (operatorStack.empty()) {<a name="line.168"></a> -<span class="sourceLineNo">169</span> throw new IllegalArgumentException("Mismatched parenthesis");<a name="line.169"></a> -<span class="sourceLineNo">170</span> }<a name="line.170"></a> -<span class="sourceLineNo">171</span> argumentOnTopOfStack = operatorStack.pop();<a name="line.171"></a> -<span class="sourceLineNo">172</span> }<a name="line.172"></a> -<span class="sourceLineNo">173</span> } else {<a name="line.173"></a> -<span class="sourceLineNo">174</span> // SimpleFilterExpression found<a name="line.174"></a> -<span class="sourceLineNo">175</span> byte [] filterSimpleExpression = extractFilterSimpleExpression(filterStringAsByteArray, i);<a name="line.175"></a> -<span class="sourceLineNo">176</span> i+= (filterSimpleExpression.length - 1);<a name="line.176"></a> -<span class="sourceLineNo">177</span> filter = parseSimpleFilterExpression(filterSimpleExpression);<a name="line.177"></a> -<span class="sourceLineNo">178</span> filterStack.push(filter);<a name="line.178"></a> -<span class="sourceLineNo">179</span> }<a name="line.179"></a> -<span class="sourceLineNo">180</span> }<a name="line.180"></a> -<span class="sourceLineNo">181</span><a name="line.181"></a> -<span class="sourceLineNo">182</span> // Finished parsing filterString<a name="line.182"></a> -<span class="sourceLineNo">183</span> while (!operatorStack.empty()) {<a name="line.183"></a> -<span class="sourceLineNo">184</span> filterStack.push(popArguments(operatorStack, filterStack));<a name="line.184"></a> -<span class="sourceLineNo">185</span> }<a name="line.185"></a> -<span class="sourceLineNo">186</span> if (filterStack.empty()) {<a name="line.186"></a> -<span class="sourceLineNo">187</span> throw new IllegalArgumentException("Incorrect Filter String");<a name="line.187"></a> -<span class="sourceLineNo">188</span> }<a name="line.188"></a> -<span class="sourceLineNo">189</span> filter = filterStack.pop();<a name="line.189"></a> -<span class="sourceLineNo">190</span> if (!filterStack.empty()) {<a name="line.190"></a> -<span class="sourceLineNo">191</span> throw new IllegalArgumentException("Incorrect Filter String");<a name="line.191"></a> -<span class="sourceLineNo">192</span> }<a name="line.192"></a> -<span class="sourceLineNo">193</span> return filter;<a name="line.193"></a> -<span class="sourceLineNo">194</span> }<a name="line.194"></a> -<span class="sourceLineNo">195</span><a name="line.195"></a> -<span class="sourceLineNo">196</span>/**<a name="line.196"></a> -<span class="sourceLineNo">197</span> * Extracts a simple filter expression from the filter string given by the user<a name="line.197"></a> -<span class="sourceLineNo">198</span> * <p><a name="line.198"></a> -<span class="sourceLineNo">199</span> * A simpleFilterExpression is of the form: FilterName('arg', 'arg', 'arg')<a name="line.199"></a> -<span class="sourceLineNo">200</span> * The user given filter string can have many simpleFilterExpressions combined<a name="line.200"></a> -<span class="sourceLineNo">201</span> * using operators.<a name="line.201"></a> -<span class="sourceLineNo">202</span> * <p><a name="line.202"></a> -<span class="sourceLineNo">203</span> * This function extracts a simpleFilterExpression from the<a name="line.203"></a> -<span class="sourceLineNo">204</span> * larger filterString given the start offset of the simpler expression<a name="line.204"></a> -<span class="sourceLineNo">205</span> * <p><a name="line.205"></a> -<span class="sourceLineNo">206</span> * @param filterStringAsByteArray filter string given by the user<a name="line.206"></a> -<span class="sourceLineNo">207</span> * @param filterExpressionStartOffset start index of the simple filter expression<a name="line.207"></a> -<span class="sourceLineNo">208</span> * @return byte array containing the simple filter expression<a name="line.208"></a> -<span class="sourceLineNo">209</span> */<a name="line.209"></a> -<span class="sourceLineNo">210</span> public byte [] extractFilterSimpleExpression (byte [] filterStringAsByteArray,<a name="line.210"></a> -<span class="sourceLineNo">211</span> int filterExpressionStartOffset)<a name="line.211"></a> -<span class="sourceLineNo">212</span> throws CharacterCodingException {<a name="line.212"></a> -<span class="sourceLineNo">213</span> int quoteCount = 0;<a name="line.213"></a> -<span class="sourceLineNo">214</span> for (int i=filterExpressionStartOffset; i<filterStringAsByteArray.length; i++) {<a name="line.214"></a> -<span class="sourceLineNo">215</span> if (filterStringAsByteArray[i] == ParseConstants.SINGLE_QUOTE) {<a name="line.215"></a> -<span class="sourceLineNo">216</span> if (isQuoteUnescaped(filterStringAsByteArray, i)) {<a name="line.216"></a> -<span class="sourceLineNo">217</span> quoteCount ++;<a name="line.217"></a> -<span class="sourceLineNo">218</span> } else {<a name="line.218"></a> -<span class="sourceLineNo">219</span> // To skip the next quote that has been escaped<a name="line.219"></a> -<span class="sourceLineNo">220</span> i++;<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> if (filterStringAsByteArray[i] == ParseConstants.RPAREN && (quoteCount %2 ) == 0) {<a name="line.223"></a> -<span class="sourceLineNo">224</span> byte [] filterSimpleExpression = new byte [i - filterExpressionStartOffset + 1];<a name="line.224"></a> -<span class="sourceLineNo">225</span> Bytes.putBytes(filterSimpleExpression, 0, filterStringAsByteArray,<a name="line.225"></a> -<span class="sourceLineNo">226</span> filterExpressionStartOffset, i-filterExpressionStartOffset + 1);<a name="line.226"></a> -<span class="sourceLineNo">227</span> return filterSimpleExpression;<a name="line.227"></a> -<span class="sourceLineNo">228</span> }<a name="line.228"></a> -<span class="sourceLineNo">229</span> }<a name="line.229"></a> -<span class="sourceLineNo">230</span> throw new IllegalArgumentException("Incorrect Filter String");<a name="line.230"></a> -<span class="sourceLineNo">231</span> }<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> * Constructs a filter object given a simple filter expression<a name="line.234"></a> -<span class="sourceLineNo">235</span> * <p><a name="line.235"></a> -<span class="sourceLineNo">236</span> * @param filterStringAsByteArray filter string given by the user<a name="line.236"></a> -<span class="sourceLineNo">237</span> * @return filter object we constructed<a name="line.237"></a> -<span class="sourceLineNo">238</span> */<a name="line.238"></a> -<span class="sourceLineNo">239</span> public Filter parseSimpleFilterExpression (byte [] filterStringAsByteArray)<a name="line.239"></a> -<span class="sourceLineNo">240</span> throws CharacterCodingException {<a name="line.240"></a> -<span class="sourceLineNo">241</span><a name="line.241"></a> -<span class="sourceLineNo">242</span> String filterName = Bytes.toString(getFilterName(filterStringAsByteArray));<a name="line.242"></a> -<span class="sourceLineNo">243</span> ArrayList<byte []> filterArguments = getFilterArguments(filterStringAsByteArray);<a name="line.243"></a> -<span class="sourceLineNo">244</span> if (!filterHashMap.containsKey(filterName)) {<a name="line.244"></a> -<span class="sourceLineNo">245</span> throw new IllegalArgumentException("Filter Name " + filterName + " not supported");<a name="line.245"></a> -<span class="sourceLineNo">246</span> }<a name="line.246"></a> -<span class="sourceLineNo">247</span> try {<a name="line.247"></a> -<span class="sourceLineNo">248</span> filterName = filterHashMap.get(filterName);<a name="line.248"></a> -<span class="sourceLineNo">249</span> Class<?> c = Class.forName(filterName);<a name="line.249"></a> -<span class="sourceLineNo">250</span> Class<?>[] argTypes = new Class [] {ArrayList.class};<a name="line.250"></a> -<span class="sourceLineNo">251</span> Method m = c.getDeclaredMethod("createFilterFromArguments", argTypes);<a 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IllegalArgumentException("Incorrect filter string " +<a name="line.262"></a> -<span class="sourceLineNo">263</span> new String(filterStringAsByteArray));<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> * Returns the filter name given a simple filter expression<a name="line.267"></a> -<span class="sourceLineNo">268</span> * <p><a name="line.268"></a> -<span class="sourceLineNo">269</span> * @param filterStringAsByteArray a simple filter expression<a name="line.269"></a> -<span class="sourceLineNo">270</span> * @return name of filter in the simple filter expression<a name="line.270"></a> -<span class="sourceLineNo">271</span> */<a name="line.271"></a> -<span class="sourceLineNo">272</span> public static byte [] getFilterName (byte [] filterStringAsByteArray) {<a name="line.272"></a> 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class="sourceLineNo">284</span> if (filterNameEndIndex == 0) {<a name="line.284"></a> -<span class="sourceLineNo">285</span> throw new IllegalArgumentException("Incorrect Filter Name");<a name="line.285"></a> -<span class="sourceLineNo">286</span> }<a name="line.286"></a> -<span class="sourceLineNo">287</span><a name="line.287"></a> -<span class="sourceLineNo">288</span> byte [] filterName = new byte[filterNameEndIndex - filterNameStartIndex];<a name="line.288"></a> -<span class="sourceLineNo">289</span> Bytes.putBytes(filterName, 0, filterStringAsByteArray, 0,<a name="line.289"></a> -<span class="sourceLineNo">290</span> filterNameEndIndex - filterNameStartIndex);<a name="line.290"></a> -<span class="sourceLineNo">291</span> return filterName;<a name="line.291"></a> -<span class="sourceLineNo">292</span> }<a name="line.292"></a> -<span class="sourceLineNo">293</span><a name="line.293"></a> -<span class="sourceLineNo">294</span>/**<a name="line.294"></a> -<span class="sourceLineNo">295</span> * Returns the arguments of the filter from the filter string<a name="line.295"></a> -<span class="sourceLineNo">296</span> * <p><a name="line.296"></a> -<span class="sourceLineNo">297</span> * @param filterStringAsByteArray filter string given by the user<a name="line.297"></a> -<span class="sourceLineNo">298</span> * @return an ArrayList containing the arguments of the filter in the filter string<a name="line.298"></a> -<span class="sourceLineNo">299</span> */<a name="line.299"></a> -<span class="sourceLineNo">300</span> public static ArrayList<byte []> getFilterArguments (byte [] filterStringAsByteArray) {<a name="line.300"></a> -<span class="sourceLineNo">301</span> int argumentListStartIndex = Bytes.searchDelimiterIndex(filterStringAsByteArray, 0,<a name="line.301"></a> -<span class="sourceLineNo">302</span> filterStringAsByteArray.length,<a name="line.302"></a> -<span class="sourceLineNo">303</span> ParseConstants.LPAREN);<a name="line.303"></a> 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class="sourceLineNo">345</span> filterStringAsByteArray[j] == ParseConstants.COMMA ||<a name="line.345"></a> -<span class="sourceLineNo">346</span> filterStringAsByteArray[j] == ParseConstants.RPAREN) {<a name="line.346"></a> -<span class="sourceLineNo">347</span> argumentEndIndex = j - 1;<a name="line.347"></a> -<span class="sourceLineNo">348</span> i = j;<a name="line.348"></a> -<span class="sourceLineNo">349</span> byte [] filterArgument = new byte [argumentEndIndex - argumentStartIndex + 1];<a name="line.349"></a> -<span class="sourceLineNo">350</span> Bytes.putBytes(filterArgument, 0, filterStringAsByteArray,<a name="line.350"></a> -<span class="sourceLineNo">351</span> argumentStartIndex, argumentEndIndex - argumentStartIndex + 1);<a name="line.351"></a> -<span class="sourceLineNo">352</span> filterArguments.add(filterArgument);<a name="line.352"></a> -<span class="sourceLineNo">353</span> break;<a name="line.353"></a> -<span class="sourceLineNo">354</span> } else if (j == 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class="sourceLineNo">757</span> (booleanAsByteArray[1] == 'a' || booleanAsByteArray[1] == 'A') &&<a name="line.757"></a> -<span class="sourceLineNo">758</span> (booleanAsByteArray[2] == 'l' || booleanAsByteArray[2] == 'L') &&<a name="line.758"></a> -<span class="sourceLineNo">759</span> (booleanAsByteArray[3] == 's' || booleanAsByteArray[3] == 'S') &&<a name="line.759"></a> -<span class="sourceLineNo">760</span> (booleanAsByteArray[4] == 'e' || booleanAsByteArray[4] == 'E')) {<a name="line.760"></a> -<span class="sourceLineNo">761</span> return false;<a name="line.761"></a> -<span class="sourceLineNo">762</span> }<a name="line.762"></a> -<span class="sourceLineNo">763</span> else {<a name="line.763"></a> -<span class="sourceLineNo">764</span> throw new IllegalArgumentException("Incorrect Boolean Expression");<a name="line.764"></a> -<span class="sourceLineNo">765</span> }<a name="line.765"></a> -<span class="sourceLineNo">766</span> }<a name="line.766"></a> -<span class="sourceLineNo">767</span><a name="line.767"></a> -<span class="sourceLineNo">768</span>/**<a name="line.768"></a> -<span class="sourceLineNo">769</span> * Takes a compareOperator symbol as a byte array and returns the corresponding CompareOperator<a name="line.769"></a> -<span class="sourceLineNo">770</span> * <p><a name="line.770"></a> -<span class="sourceLineNo">771</span> * @param compareOpAsByteArray the comparatorOperator symbol as a byte array<a name="line.771"></a> -<span class="sourceLineNo">772</span> * @return the Compare Operator<a name="line.772"></a> -<span class="sourceLineNo">773</span> */<a name="line.773"></a> -<span class="sourceLineNo">774</span> public static CompareFilter.CompareOp createCompareOp (byte [] compareOpAsByteArray) {<a name="line.774"></a> -<span class="sourceLineNo">775</span> ByteBuffer compareOp = ByteBuffer.wrap(compareOpAsByteArray);<a name="line.775"></a> -<span class="sourceLineNo">776</span> if 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return CompareOp.NOT_EQUAL;<a name="line.785"></a> -<span class="sourceLineNo">786</span> else if (compareOp.equals(ParseConstants.EQUAL_TO_BUFFER))<a name="line.786"></a> -<span class="sourceLineNo">787</span> return CompareOp.EQUAL;<a name="line.787"></a> -<span class="sourceLineNo">788</span> else<a name="line.788"></a> -<span class="sourceLineNo">789</span> throw new IllegalArgumentException("Invalid compare operator");<a name="line.789"></a> -<span class="sourceLineNo">790</span> }<a name="line.790"></a> -<span class="sourceLineNo">791</span><a name="line.791"></a> -<span class="sourceLineNo">792</span>/**<a name="line.792"></a> -<span class="sourceLineNo">793</span> * Parses a comparator of the form comparatorType:comparatorValue form and returns a comparator<a name="line.793"></a> -<span class="sourceLineNo">794</span> * <p><a name="line.794"></a> -<span class="sourceLineNo">795</span> * @param comparator the comparator in the form comparatorType:comparatorValue<a 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-<span class="sourceLineNo">806</span> if (Bytes.equals(comparatorType, ParseConstants.binaryType))<a name="line.806"></a> -<span class="sourceLineNo">807</span> return new BinaryComparator(comparatorValue);<a name="line.807"></a> -<span class="sourceLineNo">808</span> else if (Bytes.equals(comparatorType, ParseConstants.binaryPrefixType))<a name="line.808"></a> -<span class="sourceLineNo">809</span> return new BinaryPrefixComparator(comparatorValue);<a name="line.809"></a> -<span class="sourceLineNo">810</span> else if (Bytes.equals(comparatorType, ParseConstants.regexStringType))<a name="line.810"></a> -<span class="sourceLineNo">811</span> return new RegexStringComparator(new String(comparatorValue));<a name="line.811"></a> -<span class="sourceLineNo">812</span> else if (Bytes.equals(comparatorType, ParseConstants.substringType))<a name="line.812"></a> -<span class="sourceLineNo">813</span> return new SubstringComparator(new String(comparatorValue));<a name="line.813"></a> -<span class="sourceLineNo">814</span> else<a name="line.814"></a> -<span class="sourceLineNo">815</span> throw new IllegalArgumentException("Incorrect comparatorType");<a name="line.815"></a> -<span class="sourceLineNo">816</span> }<a name="line.816"></a> -<span class="sourceLineNo">817</span><a name="line.817"></a> -<span class="sourceLineNo">818</span>/**<a name="line.818"></a> -<span class="sourceLineNo">819</span> * Splits a column in comparatorType:comparatorValue form into separate byte arrays<a name="line.819"></a> -<span class="sourceLineNo">820</span> * <p><a name="line.820"></a> -<span class="sourceLineNo">821</span> * @param comparator the comparator<a name="line.821"></a> -<span class="sourceLineNo">822</span> * @return the parsed arguments of the comparator as a 2D byte array<a name="line.822"></a> -<span class="sourceLineNo">823</span> */<a name="line.823"></a> -<span class="sourceLineNo">824</span> public static byte [][] parseComparator (byte [] comparator) {<a name="line.824"></a> -<span class="sourceLineNo">825</span> final int index = Bytes.searchDelimiterIndex(comparator, 0, comparator.length,<a name="line.825"></a> -<span class="sourceLineNo">826</span> ParseConstants.COLON);<a name="line.826"></a> -<span class="sourceLineNo">827</span> if (index == -1) {<a name="line.827"></a> -<span class="sourceLineNo">828</span> throw new IllegalArgumentException("Incorrect comparator");<a name="line.828"></a> -<span class="sourceLineNo">829</span> }<a name="line.829"></a> -<span class="sourceLineNo">830</span><a name="line.830"></a> -<span class="sourceLineNo">831</span> byte [][] result = new byte [2][0];<a name="line.831"></a> -<span class="sourceLineNo">832</span> result[0] = new byte [index];<a name="line.832"></a> -<span class="sourceLineNo">833</span> System.arraycopy(comparator, 0, result[0], 0, index);<a name="line.833"></a> +<span class="sourceLineNo">035</span>import org.apache.hadoop.hbase.CompareOperator;<a name="line.35"></a> +<span class="sourceLineNo">036</span>import org.apache.hadoop.hbase.classification.InterfaceAudience;<a name="line.36"></a> +<span class="sourceLineNo">037</span>import org.apache.hadoop.hbase.filter.CompareFilter.CompareOp;<a name="line.37"></a> +<span class="sourceLineNo">038</span>import org.apache.hadoop.hbase.util.Bytes;<a name="line.38"></a> +<span class="sourceLineNo">039</span><a name="line.39"></a> +<span class="sourceLineNo">040</span>/**<a name="line.40"></a> +<span class="sourceLineNo">041</span> * This class allows a user to specify a filter via a string<a name="line.41"></a> +<span class="sourceLineNo">042</span> * The string is parsed using the methods of this class and<a name="line.42"></a> +<span class="sourceLineNo">043</span> * a filter object is constructed. This filter object is then wrapped<a name="line.43"></a> +<span class="sourceLineNo">044</span> * in a scanner object which is then returned<a name="line.44"></a> +<span class="sourceLineNo">045</span> * <p><a name="line.45"></a> +<span class="sourceLineNo">046</span> * This class addresses the HBASE-4168 JIRA. More documentation on this<a name="line.46"></a> +<span class="sourceLineNo">047</span> * Filter Language can be found at: https://issues.apache.org/jira/browse/HBASE-4176<a name="line.47"></a> +<span class="sourceLineNo">048</span> */<a name="line.48"></a> +<span class="sourceLineNo">049</span>@InterfaceAudience.Public<a name="line.49"></a> +<span class="sourceLineNo">050</span>public class ParseFilter {<a name="line.50"></a> +<span class="sourceLineNo">051</span> private static final Log LOG = LogFactory.getLog(ParseFilter.class);<a name="line.51"></a> +<span class="sourceLineNo">052</span><a name="line.52"></a> +<span class="sourceLineNo">053</span> private static HashMap<ByteBuffer, Integer> operatorPrecedenceHashMap;<a name="line.53"></a> +<span class="sourceLineNo">054</span> private static HashMap<String, String> filterHashMap;<a name="line.54"></a> +<span class="sourceLineNo">055</span><a name="line.55"></a> +<span class="sourceLineNo">056</span> static {<a name="line.56"></a> +<span class="sourceLineNo">057</span> // Registers all the filter supported by the Filter Language<a name="line.57"></a> +<span class="sourceLineNo">058</span> filterHashMap = new HashMap<>();<a name="line.58"></a> +<span class="sourceLineNo">059</span> filterHashMap.put("KeyOnlyFilter", ParseConstants.FILTER_PACKAGE + "." +<a name="line.59"></a> +<span class="sourceLineNo">060</span> "KeyOnlyFilter");<a name="line.60"></a> +<span class="sourceLineNo">061</span> filterHashMap.put("FirstKeyOnlyFilter", ParseConstants.FILTER_PACKAGE + "." +<a name="line.61"></a> +<span class="sourceLineNo">062</span> "FirstKeyOnlyFilter");<a name="line.62"></a> +<span class="sourceLineNo">063</span> filterHashMap.put("PrefixFilter", ParseConstants.FILTER_PACKAGE + "." +<a name="line.63"></a> +<span class="sourceLineNo">064</span> "PrefixFilter");<a name="line.64"></a> +<span class="sourceLineNo">065</span> filterHashMap.put("ColumnPrefixFilter", ParseConstants.FILTER_PACKAGE + "." +<a name="line.65"></a> +<span class="sourceLineNo">066</span> "ColumnPrefixFilter");<a name="line.66"></a> +<span class="sourceLineNo">067</span> filterHashMap.put("MultipleColumnPrefixFilter", ParseConstants.FILTER_PACKAGE + "." +<a name="line.67"></a> +<span class="sourceLineNo">068</span> "MultipleColumnPrefixFilter");<a name="line.68"></a> +<span class="sourceLineNo">069</span> filterHashMap.put("ColumnCountGetFilter", ParseConstants.FILTER_PACKAGE + "." +<a name="line.69"></a> +<span class="sourceLineNo">070</span> "ColumnCountGetFilter");<a name="line.70"></a> +<span class="sourceLineNo">071</span> filterHashMap.put("PageFilter", ParseConstants.FILTER_PACKAGE + "." +<a name="line.71"></a> +<span class="sourceLineNo">072</span> "PageFilter");<a name="line.72"></a> +<span class="sourceLineNo">073</span> filterHashMap.put("ColumnPaginationFilter", ParseConstants.FILTER_PACKAGE + "." +<a name="line.73"></a> +<span class="sourceLineNo">074</span> "ColumnPaginationFilter");<a name="line.74"></a> +<span class="sourceLineNo">075</span> filterHashMap.put("InclusiveStopFilter", ParseConstants.FILTER_PACKAGE + "." +<a name="line.75"></a> +<span class="sourceLineNo">076</span> "InclusiveStopFilter");<a name="line.76"></a> +<span class="sourceLineNo">077</span> filterHashMap.put("TimestampsFilter", ParseConstants.FILTER_PACKAGE + "." +<a name="line.77"></a> +<span class="sourceLineNo">078</span> "TimestampsFilter");<a name="line.78"></a> +<span class="sourceLineNo">079</span> filterHashMap.put("RowFilter", ParseConstants.FILTER_PACKAGE + "." +<a name="line.79"></a> +<span class="sourceLineNo">080</span> "RowFilter");<a name="line.80"></a> +<span class="sourceLineNo">081</span> filterHashMap.put("FamilyFilter", ParseConstants.FILTER_PACKAGE + "." +<a name="line.81"></a> +<span class="sourceLineNo">082</span> "FamilyFilter");<a name="line.82"></a> +<span class="sourceLineNo">083</span> filterHashMap.put("QualifierFilter", ParseConstants.FILTER_PACKAGE + "." +<a name="line.83"></a> +<span class="sourceLineNo">084</span> "QualifierFilter");<a name="line.84"></a> +<span class="sourceLineNo">085</span> filterHashMap.put("ValueFilter", ParseConstants.FILTER_PACKAGE + "." +<a name="line.85"></a> +<span class="sourceLineNo">086</span> "ValueFilter");<a name="line.86"></a> +<span class="sourceLineNo">087</span> filterHashMap.put("ColumnRangeFilter", ParseConstants.FILTER_PACKAGE + "." +<a name="line.87"></a> +<span class="sourceLineNo">088</span> "ColumnRangeFilter");<a name="line.88"></a> +<span class="sourceLineNo">089</span> filterHashMap.put("SingleColumnValueFilter", ParseConstants.FILTER_PACKAGE + "." +<a name="line.89"></a> +<span class="sourceLineNo">090</span> "SingleColumnValueFilter");<a name="line.90"></a> +<span class="sourceLineNo">
<TRUNCATED>
