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| <pre><span class="sourceLineNo">001</span>/*<a name="line.1"></a> |
| <span class="sourceLineNo">002</span> * Licensed to the Apache Software Foundation (ASF) under one<a name="line.2"></a> |
| <span class="sourceLineNo">003</span> * or more contributor license agreements. See the NOTICE file<a name="line.3"></a> |
| <span class="sourceLineNo">004</span> * distributed with this work for additional information<a name="line.4"></a> |
| <span class="sourceLineNo">005</span> * regarding copyright ownership. The ASF licenses this file<a name="line.5"></a> |
| <span class="sourceLineNo">006</span> * to you under the Apache License, Version 2.0 (the<a name="line.6"></a> |
| <span class="sourceLineNo">007</span> * "License"); you may not use this file except in compliance<a name="line.7"></a> |
| <span class="sourceLineNo">008</span> * with the License. You may obtain a copy of the License at<a name="line.8"></a> |
| <span class="sourceLineNo">009</span> *<a name="line.9"></a> |
| <span class="sourceLineNo">010</span> * http://www.apache.org/licenses/LICENSE-2.0<a name="line.10"></a> |
| <span class="sourceLineNo">011</span> *<a name="line.11"></a> |
| <span class="sourceLineNo">012</span> * Unless required by applicable law or agreed to in writing, software<a name="line.12"></a> |
| <span class="sourceLineNo">013</span> * distributed under the License is distributed on an "AS IS" BASIS,<a name="line.13"></a> |
| <span class="sourceLineNo">014</span> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.<a name="line.14"></a> |
| <span class="sourceLineNo">015</span> * See the License for the specific language governing permissions and<a name="line.15"></a> |
| <span class="sourceLineNo">016</span> * limitations under the License.<a name="line.16"></a> |
| <span class="sourceLineNo">017</span> */<a name="line.17"></a> |
| <span class="sourceLineNo">018</span>package org.apache.hadoop.hbase.filter;<a name="line.18"></a> |
| <span class="sourceLineNo">019</span><a name="line.19"></a> |
| <span class="sourceLineNo">020</span>import java.io.IOException;<a name="line.20"></a> |
| <span class="sourceLineNo">021</span>import java.util.List;<a name="line.21"></a> |
| <span class="sourceLineNo">022</span>import org.apache.hadoop.hbase.Cell;<a name="line.22"></a> |
| <span class="sourceLineNo">023</span>import org.apache.hadoop.hbase.exceptions.DeserializationException;<a name="line.23"></a> |
| <span class="sourceLineNo">024</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.24"></a> |
| <span class="sourceLineNo">025</span><a name="line.25"></a> |
| <span class="sourceLineNo">026</span>/**<a name="line.26"></a> |
| <span class="sourceLineNo">027</span> * Interface for row and column filters directly applied within the regionserver. A filter can<a name="line.27"></a> |
| <span class="sourceLineNo">028</span> * expect the following call sequence:<a name="line.28"></a> |
| <span class="sourceLineNo">029</span> * <ul><a name="line.29"></a> |
| <span class="sourceLineNo">030</span> * <li>{@link #reset()} : reset the filter state before filtering a new row.</li><a name="line.30"></a> |
| <span class="sourceLineNo">031</span> * <li>{@link #filterAllRemaining()}: true means row scan is over; false means keep going.</li><a name="line.31"></a> |
| <span class="sourceLineNo">032</span> * <li>{@link #filterRowKey(Cell)}: true means drop this row; false means include.</li><a name="line.32"></a> |
| <span class="sourceLineNo">033</span> * <li>{@link #filterCell(Cell)}: decides whether to include or exclude this Cell. See<a name="line.33"></a> |
| <span class="sourceLineNo">034</span> * {@link ReturnCode}.</li><a name="line.34"></a> |
| <span class="sourceLineNo">035</span> * <li>{@link #transformCell(Cell)}: if the Cell is included, let the filter transform the Cell.<a name="line.35"></a> |
| <span class="sourceLineNo">036</span> * </li><a name="line.36"></a> |
| <span class="sourceLineNo">037</span> * <li>{@link #filterRowCells(List)}: allows direct modification of the final list to be submitted<a name="line.37"></a> |
| <span class="sourceLineNo">038</span> * <li>{@link #filterRow()}: last chance to drop entire row based on the sequence of filter calls.<a name="line.38"></a> |
| <span class="sourceLineNo">039</span> * Eg: filter a row if it doesn't contain a specified column.</li><a name="line.39"></a> |
| <span class="sourceLineNo">040</span> * </ul><a name="line.40"></a> |
| <span class="sourceLineNo">041</span> * Filter instances are created one per region/scan. This abstract class replaces the old<a name="line.41"></a> |
| <span class="sourceLineNo">042</span> * RowFilterInterface. When implementing your own filters, consider inheriting {@link FilterBase} to<a name="line.42"></a> |
| <span class="sourceLineNo">043</span> * help you reduce boilerplate.<a name="line.43"></a> |
| <span class="sourceLineNo">044</span> * @see FilterBase<a name="line.44"></a> |
| <span class="sourceLineNo">045</span> */<a name="line.45"></a> |
| <span class="sourceLineNo">046</span>@InterfaceAudience.Public<a name="line.46"></a> |
| <span class="sourceLineNo">047</span>public abstract class Filter {<a name="line.47"></a> |
| <span class="sourceLineNo">048</span> protected transient boolean reversed;<a name="line.48"></a> |
| <span class="sourceLineNo">049</span><a name="line.49"></a> |
| <span class="sourceLineNo">050</span> /**<a name="line.50"></a> |
| <span class="sourceLineNo">051</span> * Reset the state of the filter between rows. Concrete implementers can signal a failure<a name="line.51"></a> |
| <span class="sourceLineNo">052</span> * condition in their code by throwing an {@link IOException}.<a name="line.52"></a> |
| <span class="sourceLineNo">053</span> * @throws IOException in case an I/O or an filter specific failure needs to be signaled.<a name="line.53"></a> |
| <span class="sourceLineNo">054</span> */<a name="line.54"></a> |
| <span class="sourceLineNo">055</span> abstract public void reset() throws IOException;<a name="line.55"></a> |
| <span class="sourceLineNo">056</span><a name="line.56"></a> |
| <span class="sourceLineNo">057</span> /**<a name="line.57"></a> |
| <span class="sourceLineNo">058</span> * Filters a row based on the row key. If this returns true, the entire row will be excluded. If<a name="line.58"></a> |
| <span class="sourceLineNo">059</span> * false, each KeyValue in the row will be passed to {@link #filterCell(Cell)} below. If<a name="line.59"></a> |
| <span class="sourceLineNo">060</span> * {@link #filterAllRemaining()} returns true, then {@link #filterRowKey(Cell)} should also return<a name="line.60"></a> |
| <span class="sourceLineNo">061</span> * true. Concrete implementers can signal a failure condition in their code by throwing an<a name="line.61"></a> |
| <span class="sourceLineNo">062</span> * {@link IOException}.<a name="line.62"></a> |
| <span class="sourceLineNo">063</span> * @param firstRowCell The first cell coming in the new row<a name="line.63"></a> |
| <span class="sourceLineNo">064</span> * @return true, remove entire row, false, include the row (maybe).<a name="line.64"></a> |
| <span class="sourceLineNo">065</span> * @throws IOException in case an I/O or an filter specific failure needs to be signaled.<a name="line.65"></a> |
| <span class="sourceLineNo">066</span> */<a name="line.66"></a> |
| <span class="sourceLineNo">067</span> abstract public boolean filterRowKey(Cell firstRowCell) throws IOException;<a name="line.67"></a> |
| <span class="sourceLineNo">068</span><a name="line.68"></a> |
| <span class="sourceLineNo">069</span> /**<a name="line.69"></a> |
| <span class="sourceLineNo">070</span> * If this returns true, the scan will terminate. Concrete implementers can signal a failure<a name="line.70"></a> |
| <span class="sourceLineNo">071</span> * condition in their code by throwing an {@link IOException}.<a name="line.71"></a> |
| <span class="sourceLineNo">072</span> * @return true to end scan, false to continue.<a name="line.72"></a> |
| <span class="sourceLineNo">073</span> * @throws IOException in case an I/O or an filter specific failure needs to be signaled.<a name="line.73"></a> |
| <span class="sourceLineNo">074</span> */<a name="line.74"></a> |
| <span class="sourceLineNo">075</span> abstract public boolean filterAllRemaining() throws IOException;<a name="line.75"></a> |
| <span class="sourceLineNo">076</span><a name="line.76"></a> |
| <span class="sourceLineNo">077</span> /**<a name="line.77"></a> |
| <span class="sourceLineNo">078</span> * A way to filter based on the column family, column qualifier and/or the column value. Return<a name="line.78"></a> |
| <span class="sourceLineNo">079</span> * code is described below. This allows filters to filter only certain number of columns, then<a name="line.79"></a> |
| <span class="sourceLineNo">080</span> * terminate without matching ever column. If filterRowKey returns true, filterCell needs to be<a name="line.80"></a> |
| <span class="sourceLineNo">081</span> * consistent with it. filterCell can assume that filterRowKey has already been called for the<a name="line.81"></a> |
| <span class="sourceLineNo">082</span> * row. If your filter returns <code>ReturnCode.NEXT_ROW</code>, it should return<a name="line.82"></a> |
| <span class="sourceLineNo">083</span> * <code>ReturnCode.NEXT_ROW</code> until {@link #reset()} is called just in case the caller calls<a name="line.83"></a> |
| <span class="sourceLineNo">084</span> * for the next row. Concrete implementers can signal a failure condition in their code by<a name="line.84"></a> |
| <span class="sourceLineNo">085</span> * throwing an {@link IOException}.<a name="line.85"></a> |
| <span class="sourceLineNo">086</span> * @param c the Cell in question<a name="line.86"></a> |
| <span class="sourceLineNo">087</span> * @return code as described below<a name="line.87"></a> |
| <span class="sourceLineNo">088</span> * @throws IOException in case an I/O or an filter specific failure needs to be signaled.<a name="line.88"></a> |
| <span class="sourceLineNo">089</span> * @see Filter.ReturnCode<a name="line.89"></a> |
| <span class="sourceLineNo">090</span> */<a name="line.90"></a> |
| <span class="sourceLineNo">091</span> public ReturnCode filterCell(final Cell c) throws IOException {<a name="line.91"></a> |
| <span class="sourceLineNo">092</span> return ReturnCode.INCLUDE;<a name="line.92"></a> |
| <span class="sourceLineNo">093</span> }<a name="line.93"></a> |
| <span class="sourceLineNo">094</span><a name="line.94"></a> |
| <span class="sourceLineNo">095</span> /**<a name="line.95"></a> |
| <span class="sourceLineNo">096</span> * Give the filter a chance to transform the passed KeyValue. If the Cell is changed a new Cell<a name="line.96"></a> |
| <span class="sourceLineNo">097</span> * object must be returned.<a name="line.97"></a> |
| <span class="sourceLineNo">098</span> * @see org.apache.hadoop.hbase.KeyValue#shallowCopy() The transformed KeyValue is what is<a name="line.98"></a> |
| <span class="sourceLineNo">099</span> * eventually returned to the client. Most filters will return the passed KeyValue unchanged.<a name="line.99"></a> |
| <span class="sourceLineNo">100</span> * @see org.apache.hadoop.hbase.filter.KeyOnlyFilter#transformCell(Cell) for an example of a<a name="line.100"></a> |
| <span class="sourceLineNo">101</span> * transformation. Concrete implementers can signal a failure condition in their code by<a name="line.101"></a> |
| <span class="sourceLineNo">102</span> * throwing an {@link IOException}.<a name="line.102"></a> |
| <span class="sourceLineNo">103</span> * @param v the KeyValue in question<a name="line.103"></a> |
| <span class="sourceLineNo">104</span> * @return the changed KeyValue<a name="line.104"></a> |
| <span class="sourceLineNo">105</span> * @throws IOException in case an I/O or an filter specific failure needs to be signaled.<a name="line.105"></a> |
| <span class="sourceLineNo">106</span> */<a name="line.106"></a> |
| <span class="sourceLineNo">107</span> abstract public Cell transformCell(final Cell v) throws IOException;<a name="line.107"></a> |
| <span class="sourceLineNo">108</span><a name="line.108"></a> |
| <span class="sourceLineNo">109</span> /**<a name="line.109"></a> |
| <span class="sourceLineNo">110</span> * Return codes for filterValue().<a name="line.110"></a> |
| <span class="sourceLineNo">111</span> */<a name="line.111"></a> |
| <span class="sourceLineNo">112</span> @InterfaceAudience.Public<a name="line.112"></a> |
| <span class="sourceLineNo">113</span> public enum ReturnCode {<a name="line.113"></a> |
| <span class="sourceLineNo">114</span> /**<a name="line.114"></a> |
| <span class="sourceLineNo">115</span> * Include the Cell<a name="line.115"></a> |
| <span class="sourceLineNo">116</span> */<a name="line.116"></a> |
| <span class="sourceLineNo">117</span> INCLUDE,<a name="line.117"></a> |
| <span class="sourceLineNo">118</span> /**<a name="line.118"></a> |
| <span class="sourceLineNo">119</span> * Include the Cell and seek to the next column skipping older versions.<a name="line.119"></a> |
| <span class="sourceLineNo">120</span> */<a name="line.120"></a> |
| <span class="sourceLineNo">121</span> INCLUDE_AND_NEXT_COL,<a name="line.121"></a> |
| <span class="sourceLineNo">122</span> /**<a name="line.122"></a> |
| <span class="sourceLineNo">123</span> * Skip this Cell<a name="line.123"></a> |
| <span class="sourceLineNo">124</span> */<a name="line.124"></a> |
| <span class="sourceLineNo">125</span> SKIP,<a name="line.125"></a> |
| <span class="sourceLineNo">126</span> /**<a name="line.126"></a> |
| <span class="sourceLineNo">127</span> * Skip this column. Go to the next column in this row.<a name="line.127"></a> |
| <span class="sourceLineNo">128</span> */<a name="line.128"></a> |
| <span class="sourceLineNo">129</span> NEXT_COL,<a name="line.129"></a> |
| <span class="sourceLineNo">130</span> /**<a name="line.130"></a> |
| <span class="sourceLineNo">131</span> * Seek to next row in current family. It may still pass a cell whose family is different but<a name="line.131"></a> |
| <span class="sourceLineNo">132</span> * row is the same as previous cell to {@link #filterCell(Cell)} , even if we get a NEXT_ROW<a name="line.132"></a> |
| <span class="sourceLineNo">133</span> * returned for previous cell. For more details see HBASE-18368. <br><a name="line.133"></a> |
| <span class="sourceLineNo">134</span> * Once reset() method was invoked, then we switch to the next row for all family, and you can<a name="line.134"></a> |
| <span class="sourceLineNo">135</span> * catch the event by invoking CellUtils.matchingRows(previousCell, currentCell). <br><a name="line.135"></a> |
| <span class="sourceLineNo">136</span> * Note that filterRow() will still be called. <br><a name="line.136"></a> |
| <span class="sourceLineNo">137</span> */<a name="line.137"></a> |
| <span class="sourceLineNo">138</span> NEXT_ROW,<a name="line.138"></a> |
| <span class="sourceLineNo">139</span> /**<a name="line.139"></a> |
| <span class="sourceLineNo">140</span> * Seek to next key which is given as hint by the filter.<a name="line.140"></a> |
| <span class="sourceLineNo">141</span> */<a name="line.141"></a> |
| <span class="sourceLineNo">142</span> SEEK_NEXT_USING_HINT,<a name="line.142"></a> |
| <span class="sourceLineNo">143</span> /**<a name="line.143"></a> |
| <span class="sourceLineNo">144</span> * Include KeyValue and done with row, seek to next. See NEXT_ROW.<a name="line.144"></a> |
| <span class="sourceLineNo">145</span> */<a name="line.145"></a> |
| <span class="sourceLineNo">146</span> INCLUDE_AND_SEEK_NEXT_ROW,<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> /**<a name="line.149"></a> |
| <span class="sourceLineNo">150</span> * Chance to alter the list of Cells to be submitted. Modifications to the list will carry on<a name="line.150"></a> |
| <span class="sourceLineNo">151</span> * Concrete implementers can signal a failure condition in their code by throwing an<a name="line.151"></a> |
| <span class="sourceLineNo">152</span> * {@link IOException}.<a name="line.152"></a> |
| <span class="sourceLineNo">153</span> * @param kvs the list of Cells to be filtered<a name="line.153"></a> |
| <span class="sourceLineNo">154</span> * @throws IOException in case an I/O or an filter specific failure needs to be signaled.<a name="line.154"></a> |
| <span class="sourceLineNo">155</span> */<a name="line.155"></a> |
| <span class="sourceLineNo">156</span> abstract public void filterRowCells(List<Cell> kvs) throws IOException;<a name="line.156"></a> |
| <span class="sourceLineNo">157</span><a name="line.157"></a> |
| <span class="sourceLineNo">158</span> /**<a name="line.158"></a> |
| <span class="sourceLineNo">159</span> * Primarily used to check for conflicts with scans(such as scans that do not read a full row at a<a name="line.159"></a> |
| <span class="sourceLineNo">160</span> * time).<a name="line.160"></a> |
| <span class="sourceLineNo">161</span> * @return True if this filter actively uses filterRowCells(List) or filterRow().<a name="line.161"></a> |
| <span class="sourceLineNo">162</span> */<a name="line.162"></a> |
| <span class="sourceLineNo">163</span> abstract public boolean hasFilterRow();<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> * Last chance to veto row based on previous {@link #filterCell(Cell)} calls. The filter needs to<a name="line.166"></a> |
| <span class="sourceLineNo">167</span> * retain state then return a particular value for this call if they wish to exclude a row if a<a name="line.167"></a> |
| <span class="sourceLineNo">168</span> * certain column is missing (for example). Concrete implementers can signal a failure condition<a name="line.168"></a> |
| <span class="sourceLineNo">169</span> * in their code by throwing an {@link IOException}.<a name="line.169"></a> |
| <span class="sourceLineNo">170</span> * @return true to exclude row, false to include row.<a name="line.170"></a> |
| <span class="sourceLineNo">171</span> * @throws IOException in case an I/O or an filter specific failure needs to be signaled.<a name="line.171"></a> |
| <span class="sourceLineNo">172</span> */<a name="line.172"></a> |
| <span class="sourceLineNo">173</span> abstract public boolean filterRow() throws IOException;<a name="line.173"></a> |
| <span class="sourceLineNo">174</span><a name="line.174"></a> |
| <span class="sourceLineNo">175</span> /**<a name="line.175"></a> |
| <span class="sourceLineNo">176</span> * If the filter returns the match code SEEK_NEXT_USING_HINT, then it should also tell which is<a name="line.176"></a> |
| <span class="sourceLineNo">177</span> * the next key it must seek to. After receiving the match code SEEK_NEXT_USING_HINT, the<a name="line.177"></a> |
| <span class="sourceLineNo">178</span> * QueryMatcher would call this function to find out which key it must next seek to. Concrete<a name="line.178"></a> |
| <span class="sourceLineNo">179</span> * implementers can signal a failure condition in their code by throwing an {@link IOException}.<a name="line.179"></a> |
| <span class="sourceLineNo">180</span> * @return KeyValue which must be next seeked. return null if the filter is not sure which key to<a name="line.180"></a> |
| <span class="sourceLineNo">181</span> * seek to next.<a name="line.181"></a> |
| <span class="sourceLineNo">182</span> * @throws IOException in case an I/O or an filter specific failure needs to be signaled.<a name="line.182"></a> |
| <span class="sourceLineNo">183</span> */<a name="line.183"></a> |
| <span class="sourceLineNo">184</span> abstract public Cell getNextCellHint(final Cell currentCell) throws IOException;<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> * Check that given column family is essential for filter to check row. Most filters always return<a name="line.187"></a> |
| <span class="sourceLineNo">188</span> * true here. But some could have more sophisticated logic which could significantly reduce<a name="line.188"></a> |
| <span class="sourceLineNo">189</span> * scanning process by not even touching columns until we are 100% sure that it's data is needed<a name="line.189"></a> |
| <span class="sourceLineNo">190</span> * in result. Concrete implementers can signal a failure condition in their code by throwing an<a name="line.190"></a> |
| <span class="sourceLineNo">191</span> * {@link IOException}.<a name="line.191"></a> |
| <span class="sourceLineNo">192</span> * @throws IOException in case an I/O or an filter specific failure needs to be signaled.<a name="line.192"></a> |
| <span class="sourceLineNo">193</span> */<a name="line.193"></a> |
| <span class="sourceLineNo">194</span> abstract public boolean isFamilyEssential(byte[] name) throws IOException;<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> * TODO: JAVADOC Concrete implementers can signal a failure condition in their code by throwing an<a name="line.197"></a> |
| <span class="sourceLineNo">198</span> * {@link IOException}.<a name="line.198"></a> |
| <span class="sourceLineNo">199</span> * @return The filter serialized using pb<a name="line.199"></a> |
| <span class="sourceLineNo">200</span> * @throws IOException in case an I/O or an filter specific failure needs to be signaled.<a name="line.200"></a> |
| <span class="sourceLineNo">201</span> */<a name="line.201"></a> |
| <span class="sourceLineNo">202</span> abstract public byte[] toByteArray() throws IOException;<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> * Concrete implementers can signal a failure condition in their code by throwing an<a name="line.205"></a> |
| <span class="sourceLineNo">206</span> * {@link IOException}.<a name="line.206"></a> |
| <span class="sourceLineNo">207</span> * @param pbBytes A pb serialized {@link Filter} instance<a name="line.207"></a> |
| <span class="sourceLineNo">208</span> * @return An instance of {@link Filter} made from <code>bytes</code><a name="line.208"></a> |
| <span class="sourceLineNo">209</span> * @throws DeserializationException if an error occurred<a name="line.209"></a> |
| <span class="sourceLineNo">210</span> * @see #toByteArray<a name="line.210"></a> |
| <span class="sourceLineNo">211</span> */<a name="line.211"></a> |
| <span class="sourceLineNo">212</span> public static Filter parseFrom(final byte[] pbBytes) throws DeserializationException {<a name="line.212"></a> |
| <span class="sourceLineNo">213</span> throw new DeserializationException(<a name="line.213"></a> |
| <span class="sourceLineNo">214</span> "parseFrom called on base Filter, but should be called on derived type");<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> * Concrete implementers can signal a failure condition in their code by throwing an<a name="line.218"></a> |
| <span class="sourceLineNo">219</span> * {@link IOException}.<a name="line.219"></a> |
| <span class="sourceLineNo">220</span> * @return true if and only if the fields of the filter that are serialized are equal to the<a name="line.220"></a> |
| <span class="sourceLineNo">221</span> * corresponding fields in other. Used for testing.<a name="line.221"></a> |
| <span class="sourceLineNo">222</span> */<a name="line.222"></a> |
| <span class="sourceLineNo">223</span> abstract boolean areSerializedFieldsEqual(Filter other);<a name="line.223"></a> |
| <span class="sourceLineNo">224</span><a name="line.224"></a> |
| <span class="sourceLineNo">225</span> /**<a name="line.225"></a> |
| <span class="sourceLineNo">226</span> * alter the reversed scan flag<a name="line.226"></a> |
| <span class="sourceLineNo">227</span> * @param reversed flag<a name="line.227"></a> |
| <span class="sourceLineNo">228</span> */<a name="line.228"></a> |
| <span class="sourceLineNo">229</span> public void setReversed(boolean reversed) {<a name="line.229"></a> |
| <span class="sourceLineNo">230</span> this.reversed = reversed;<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> public boolean isReversed() {<a name="line.233"></a> |
| <span class="sourceLineNo">234</span> return this.reversed;<a name="line.234"></a> |
| <span class="sourceLineNo">235</span> }<a name="line.235"></a> |
| <span class="sourceLineNo">236</span>}<a name="line.236"></a> |
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| </pre> |
| </div> |
| </body> |
| </html> |
