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&#160;<span id="projectnumber">3.0.3</span>
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<div id="projectbrief">Lucene.Net is a .NET port of the Java Lucene Indexing Library</div>
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<li class="navelem"><a class="el" href="dir_1efe588324fc547683bba4a3f1bac847.html">core</a></li><li class="navelem"><a class="el" href="dir_0fd6a22b48ba7ca96d8c1554e5fff3e1.html">Store</a></li> </ul>
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<div class="title">FSDirectory.cs</div> </div>
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<a href="_f_s_directory_8cs.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span>&#160;<span class="comment">/* </span></div>
<div class="line"><a name="l00002"></a><span class="lineno"> 2</span>&#160;<span class="comment"> * Licensed to the Apache Software Foundation (ASF) under one or more</span></div>
<div class="line"><a name="l00003"></a><span class="lineno"> 3</span>&#160;<span class="comment"> * contributor license agreements. See the NOTICE file distributed with</span></div>
<div class="line"><a name="l00004"></a><span class="lineno"> 4</span>&#160;<span class="comment"> * this work for additional information regarding copyright ownership.</span></div>
<div class="line"><a name="l00005"></a><span class="lineno"> 5</span>&#160;<span class="comment"> * The ASF licenses this file to You under the Apache License, Version 2.0</span></div>
<div class="line"><a name="l00006"></a><span class="lineno"> 6</span>&#160;<span class="comment"> * (the &quot;License&quot;); you may not use this file except in compliance with</span></div>
<div class="line"><a name="l00007"></a><span class="lineno"> 7</span>&#160;<span class="comment"> * the License. You may obtain a copy of the License at</span></div>
<div class="line"><a name="l00008"></a><span class="lineno"> 8</span>&#160;<span class="comment"> * </span></div>
<div class="line"><a name="l00009"></a><span class="lineno"> 9</span>&#160;<span class="comment"> * http://www.apache.org/licenses/LICENSE-2.0</span></div>
<div class="line"><a name="l00010"></a><span class="lineno"> 10</span>&#160;<span class="comment"> * </span></div>
<div class="line"><a name="l00011"></a><span class="lineno"> 11</span>&#160;<span class="comment"> * Unless required by applicable law or agreed to in writing, software</span></div>
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span>&#160;<span class="comment"> * distributed under the License is distributed on an &quot;AS IS&quot; BASIS,</span></div>
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span>&#160;<span class="comment"> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</span></div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span>&#160;<span class="comment"> * See the License for the specific language governing permissions and</span></div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span>&#160;<span class="comment"> * limitations under the License.</span></div>
<div class="line"><a name="l00016"></a><span class="lineno"> 16</span>&#160;<span class="comment"> */</span></div>
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span>&#160;</div>
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span>&#160;<span class="keyword">using</span> System;</div>
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span>&#160;<span class="keyword">using</span> System.Collections.Generic;</div>
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span>&#160;</div>
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span>&#160;<span class="comment">// Used only for WRITE_LOCK_NAME in deprecated create=true case:</span></div>
<div class="line"><a name="l00022"></a><span class="lineno"> 22</span>&#160;<span class="keyword">using</span> System.IO;</div>
<div class="line"><a name="l00023"></a><span class="lineno"> 23</span>&#160;<span class="keyword">using</span> Lucene.Net.Support;</div>
<div class="line"><a name="l00024"></a><span class="lineno"><a class="code" href="_f_s_directory_8cs.html#a7f688138e25e2205e3431f09e9fec6e8"> 24</a></span>&#160;<span class="keyword">using</span> <a class="code" href="_directory_8cs.html#a7f688138e25e2205e3431f09e9fec6e8">IndexFileNameFilter</a> = Lucene.Net.Index.IndexFileNameFilter;</div>
<div class="line"><a name="l00025"></a><span class="lineno"><a class="code" href="_f_s_directory_8cs.html#a7d90824eac5b2433e714cc9faeb34d1b"> 25</a></span>&#160;<span class="keyword">using</span> <a class="code" href="_syns2_index_8cs.html#a7d90824eac5b2433e714cc9faeb34d1b">IndexWriter</a> = Lucene.Net.Index.IndexWriter;</div>
<div class="line"><a name="l00026"></a><span class="lineno"><a class="code" href="_f_s_directory_8cs.html#a4d21c5a1cd18c33bc4f3633bd17d823b"> 26</a></span>&#160;<span class="keyword">using</span> <a class="code" href="_documents_writer_8cs.html#a4d21c5a1cd18c33bc4f3633bd17d823b">Constants</a> = Lucene.Net.Util.Constants;</div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span>&#160;</div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span>&#160;<span class="keyword">namespace </span>Lucene.Net.Store</div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span>&#160;{</div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span>&#160; </div>
<div class="line"><a name="l00104"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_store_1_1_f_s_directory.html"> 104</a></span>&#160; <span class="keyword">public</span> <span class="keyword">abstract</span> <span class="keyword">class </span><a class="code" href="class_lucene_1_1_net_1_1_store_1_1_f_s_directory.html" title=" Base class for Directory implementations that store index files in the file system. There are currently three core subclasses:">FSDirectory</a> : <a class="code" href="class_lucene_1_1_net_1_1_store_1_1_directory.html" title="A Directory is a flat list of files. Files may be written once, when they are created. Once a file is created it may only be opened for read, or deleted. Random access is permitted both when reading and writing.">Directory</a></div>
<div class="line"><a name="l00105"></a><span class="lineno"> 105</span>&#160; {</div>
<div class="line"><a name="l00106"></a><span class="lineno"> 106</span>&#160; <span class="keyword">private</span> <span class="keyword">static</span> System.Security.Cryptography.HashAlgorithm DIGESTER;</div>
<div class="line"><a name="l00107"></a><span class="lineno"> 107</span>&#160;</div>
<div class="line"><a name="l00108"></a><span class="lineno"> 108</span>&#160; <span class="keyword">static</span> <a class="code" href="_check_index_8cs.html#a268bfcb9b9cbdec8d60c03647e293e7e">FSDirectory</a>()</div>
<div class="line"><a name="l00109"></a><span class="lineno"> 109</span>&#160; {</div>
<div class="line"><a name="l00110"></a><span class="lineno"> 110</span>&#160; <span class="keywordflow">try</span></div>
<div class="line"><a name="l00111"></a><span class="lineno"> 111</span>&#160; {</div>
<div class="line"><a name="l00112"></a><span class="lineno"> 112</span>&#160; DIGESTER = Cryptography.HashAlgorithm;</div>
<div class="line"><a name="l00113"></a><span class="lineno"> 113</span>&#160; }</div>
<div class="line"><a name="l00114"></a><span class="lineno"> 114</span>&#160; <span class="keywordflow">catch</span> (System.Exception e)</div>
<div class="line"><a name="l00115"></a><span class="lineno"> 115</span>&#160; {</div>
<div class="line"><a name="l00116"></a><span class="lineno"> 116</span>&#160; <span class="keywordflow">throw</span> <span class="keyword">new</span> System.SystemException(e.ToString(), e);</div>
<div class="line"><a name="l00117"></a><span class="lineno"> 117</span>&#160; }</div>
<div class="line"><a name="l00118"></a><span class="lineno"> 118</span>&#160; }</div>
<div class="line"><a name="l00119"></a><span class="lineno"> 119</span>&#160; </div>
<div class="line"><a name="l00120"></a><span class="lineno"> 120</span>&#160; <span class="keyword">private</span> <span class="keywordtype">bool</span> checked_Renamed;</div>
<div class="line"><a name="l00121"></a><span class="lineno"> 121</span>&#160; </div>
<div class="line"><a name="l00122"></a><span class="lineno"> 122</span>&#160; <span class="keyword">internal</span> <span class="keywordtype">void</span> CreateDir()</div>
<div class="line"><a name="l00123"></a><span class="lineno"> 123</span>&#160; {</div>
<div class="line"><a name="l00124"></a><span class="lineno"> 124</span>&#160; <span class="keywordflow">if</span> (!checked_Renamed)</div>
<div class="line"><a name="l00125"></a><span class="lineno"> 125</span>&#160; {</div>
<div class="line"><a name="l00126"></a><span class="lineno"> 126</span>&#160; <span class="keywordflow">if</span> (!this.internalDirectory.Exists)</div>
<div class="line"><a name="l00127"></a><span class="lineno"> 127</span>&#160; {</div>
<div class="line"><a name="l00128"></a><span class="lineno"> 128</span>&#160; <span class="keywordflow">try</span></div>
<div class="line"><a name="l00129"></a><span class="lineno"> 129</span>&#160; {</div>
<div class="line"><a name="l00130"></a><span class="lineno"> 130</span>&#160; this.internalDirectory.Create();</div>
<div class="line"><a name="l00131"></a><span class="lineno"> 131</span>&#160; }</div>
<div class="line"><a name="l00132"></a><span class="lineno"> 132</span>&#160; <span class="keywordflow">catch</span> (Exception)</div>
<div class="line"><a name="l00133"></a><span class="lineno"> 133</span>&#160; {</div>
<div class="line"><a name="l00134"></a><span class="lineno"> 134</span>&#160; <span class="keywordflow">throw</span> <span class="keyword">new</span> System.IO.IOException(<span class="stringliteral">&quot;Cannot create directory: &quot;</span> + internalDirectory);</div>
<div class="line"><a name="l00135"></a><span class="lineno"> 135</span>&#160; }</div>
<div class="line"><a name="l00136"></a><span class="lineno"> 136</span>&#160; this.internalDirectory.Refresh(); <span class="comment">// need to see the creation</span></div>
<div class="line"><a name="l00137"></a><span class="lineno"> 137</span>&#160; }</div>
<div class="line"><a name="l00138"></a><span class="lineno"> 138</span>&#160; </div>
<div class="line"><a name="l00139"></a><span class="lineno"> 139</span>&#160; checked_Renamed = <span class="keyword">true</span>;</div>
<div class="line"><a name="l00140"></a><span class="lineno"> 140</span>&#160; }</div>
<div class="line"><a name="l00141"></a><span class="lineno"> 141</span>&#160; }</div>
<div class="line"><a name="l00142"></a><span class="lineno"> 142</span>&#160; </div>
<div class="line"><a name="l00146"></a><span class="lineno"> 146</span>&#160; <span class="keyword">protected</span> <span class="keyword">internal</span> <span class="keywordtype">void</span> InitOutput(System.String name)</div>
<div class="line"><a name="l00147"></a><span class="lineno"> 147</span>&#160; {</div>
<div class="line"><a name="l00148"></a><span class="lineno"> 148</span>&#160; EnsureOpen();</div>
<div class="line"><a name="l00149"></a><span class="lineno"> 149</span>&#160; CreateDir();</div>
<div class="line"><a name="l00150"></a><span class="lineno"> 150</span>&#160; System.IO.FileInfo file = <span class="keyword">new</span> System.IO.FileInfo(System.IO.Path.Combine(internalDirectory.FullName, name));</div>
<div class="line"><a name="l00151"></a><span class="lineno"> 151</span>&#160; <span class="keywordflow">if</span> (file.Exists) <span class="comment">// delete existing, if any</span></div>
<div class="line"><a name="l00152"></a><span class="lineno"> 152</span>&#160; {</div>
<div class="line"><a name="l00153"></a><span class="lineno"> 153</span>&#160; <span class="keywordflow">try</span></div>
<div class="line"><a name="l00154"></a><span class="lineno"> 154</span>&#160; {</div>
<div class="line"><a name="l00155"></a><span class="lineno"> 155</span>&#160; file.Delete();</div>
<div class="line"><a name="l00156"></a><span class="lineno"> 156</span>&#160; }</div>
<div class="line"><a name="l00157"></a><span class="lineno"> 157</span>&#160; <span class="keywordflow">catch</span> (Exception)</div>
<div class="line"><a name="l00158"></a><span class="lineno"> 158</span>&#160; {</div>
<div class="line"><a name="l00159"></a><span class="lineno"> 159</span>&#160; <span class="keywordflow">throw</span> <span class="keyword">new</span> System.IO.IOException(<span class="stringliteral">&quot;Cannot overwrite: &quot;</span> + file);</div>
<div class="line"><a name="l00160"></a><span class="lineno"> 160</span>&#160; }</div>
<div class="line"><a name="l00161"></a><span class="lineno"> 161</span>&#160; }</div>
<div class="line"><a name="l00162"></a><span class="lineno"> 162</span>&#160; }</div>
<div class="line"><a name="l00163"></a><span class="lineno"> 163</span>&#160; </div>
<div class="line"><a name="l00165"></a><span class="lineno"> 165</span>&#160; <span class="keyword">protected</span> <span class="keyword">internal</span> System.IO.DirectoryInfo internalDirectory = null;</div>
<div class="line"><a name="l00166"></a><span class="lineno"> 166</span>&#160; </div>
<div class="line"><a name="l00174"></a><span class="lineno"> 174</span>&#160; <span class="keyword">protected</span> <span class="keyword">internal</span> <a class="code" href="_check_index_8cs.html#a268bfcb9b9cbdec8d60c03647e293e7e">FSDirectory</a>(System.IO.DirectoryInfo path, <a class="code" href="class_lucene_1_1_net_1_1_store_1_1_lock_factory.html" title="Base class for Locking implementation. Directory uses instances of this class to implement locking...">LockFactory</a> lockFactory)</div>
<div class="line"><a name="l00175"></a><span class="lineno"> 175</span>&#160; {</div>
<div class="line"><a name="l00176"></a><span class="lineno"> 176</span>&#160; <span class="comment">// new ctors use always NativeFSLockFactory as default:</span></div>
<div class="line"><a name="l00177"></a><span class="lineno"> 177</span>&#160; <span class="keywordflow">if</span> (lockFactory == null)</div>
<div class="line"><a name="l00178"></a><span class="lineno"> 178</span>&#160; {</div>
<div class="line"><a name="l00179"></a><span class="lineno"> 179</span>&#160; lockFactory = <span class="keyword">new</span> <a class="code" href="class_lucene_1_1_net_1_1_store_1_1_native_f_s_lock_factory.html" title="Implements LockFactory using native OS file locks. Note that because this LockFactory relies on java...">NativeFSLockFactory</a>();</div>
<div class="line"><a name="l00180"></a><span class="lineno"> 180</span>&#160; }</div>
<div class="line"><a name="l00181"></a><span class="lineno"> 181</span>&#160; <span class="comment">// Set up lockFactory with cascaded defaults: if an instance was passed in,</span></div>
<div class="line"><a name="l00182"></a><span class="lineno"> 182</span>&#160; <span class="comment">// use that; else if locks are disabled, use NoLockFactory; else if the</span></div>
<div class="line"><a name="l00183"></a><span class="lineno"> 183</span>&#160; <span class="comment">// system property Lucene.Net.Store.FSDirectoryLockFactoryClass is set,</span></div>
<div class="line"><a name="l00184"></a><span class="lineno"> 184</span>&#160; <span class="comment">// instantiate that; else, use SimpleFSLockFactory:</span></div>
<div class="line"><a name="l00185"></a><span class="lineno"> 185</span>&#160;</div>
<div class="line"><a name="l00186"></a><span class="lineno"> 186</span>&#160; internalDirectory = path;</div>
<div class="line"><a name="l00187"></a><span class="lineno"> 187</span>&#160;</div>
<div class="line"><a name="l00188"></a><span class="lineno"> 188</span>&#160; <span class="comment">// due to differences in how Java &amp; .NET refer to files, the checks are a bit different</span></div>
<div class="line"><a name="l00189"></a><span class="lineno"> 189</span>&#160; <span class="keywordflow">if</span> (!internalDirectory.Exists &amp;&amp; System.IO.File.Exists(internalDirectory.FullName))</div>
<div class="line"><a name="l00190"></a><span class="lineno"> 190</span>&#160; {</div>
<div class="line"><a name="l00191"></a><span class="lineno"> 191</span>&#160; <span class="keywordflow">throw</span> <span class="keyword">new</span> <a class="code" href="_segment_infos_8cs.html#a2a6014236e864c10f92b72d1b5ded0ec">NoSuchDirectoryException</a>(<span class="stringliteral">&quot;file &#39;&quot;</span> + internalDirectory.FullName + <span class="stringliteral">&quot;&#39; exists but is not a directory&quot;</span>);</div>
<div class="line"><a name="l00192"></a><span class="lineno"> 192</span>&#160; }</div>
<div class="line"><a name="l00193"></a><span class="lineno"> 193</span>&#160; SetLockFactory(lockFactory);</div>
<div class="line"><a name="l00194"></a><span class="lineno"> 194</span>&#160; </div>
<div class="line"><a name="l00195"></a><span class="lineno"> 195</span>&#160; <span class="comment">// for filesystem based LockFactory, delete the lockPrefix, if the locks are placed</span></div>
<div class="line"><a name="l00196"></a><span class="lineno"> 196</span>&#160; <span class="comment">// in index dir. If no index dir is given, set ourselves</span></div>
<div class="line"><a name="l00197"></a><span class="lineno"> 197</span>&#160; <span class="keywordflow">if</span> (lockFactory is <a class="code" href="class_lucene_1_1_net_1_1_store_1_1_f_s_lock_factory.html" title="Base class for file system based locking implementation.">FSLockFactory</a>)</div>
<div class="line"><a name="l00198"></a><span class="lineno"> 198</span>&#160; {</div>
<div class="line"><a name="l00199"></a><span class="lineno"> 199</span>&#160; FSLockFactory lf = (FSLockFactory)lockFactory;</div>
<div class="line"><a name="l00200"></a><span class="lineno"> 200</span>&#160; System.IO.DirectoryInfo dir = lf.<a class="code" href="class_lucene_1_1_net_1_1_store_1_1_f_s_lock_factory.html#a04dd1c0055028cd88ddee4cfcf2a9732" title="Gets the lock directory.">LockDir</a>;</div>
<div class="line"><a name="l00201"></a><span class="lineno"> 201</span>&#160; <span class="comment">// if the lock factory has no lockDir set, use the this directory as lockDir</span></div>
<div class="line"><a name="l00202"></a><span class="lineno"> 202</span>&#160; <span class="keywordflow">if</span> (dir == null)</div>
<div class="line"><a name="l00203"></a><span class="lineno"> 203</span>&#160; {</div>
<div class="line"><a name="l00204"></a><span class="lineno"> 204</span>&#160; lf.<a class="code" href="class_lucene_1_1_net_1_1_store_1_1_f_s_lock_factory.html#a04dd1c0055028cd88ddee4cfcf2a9732" title="Gets the lock directory.">LockDir</a> = this.internalDirectory;</div>
<div class="line"><a name="l00205"></a><span class="lineno"> 205</span>&#160; lf.<a class="code" href="class_lucene_1_1_net_1_1_store_1_1_lock_factory.html#a6aac2302bee58d7776271f099e52a325" title="Gets or sets the prefix in use for all locks created in this LockFactory. This is normally called onc...">LockPrefix</a> = null;</div>
<div class="line"><a name="l00206"></a><span class="lineno"> 206</span>&#160; }</div>
<div class="line"><a name="l00207"></a><span class="lineno"> 207</span>&#160; <span class="keywordflow">else</span> <span class="keywordflow">if</span> (dir.FullName.Equals(<span class="keyword">this</span>.internalDirectory.FullName))</div>
<div class="line"><a name="l00208"></a><span class="lineno"> 208</span>&#160; {</div>
<div class="line"><a name="l00209"></a><span class="lineno"> 209</span>&#160; lf.<a class="code" href="class_lucene_1_1_net_1_1_store_1_1_lock_factory.html#a6aac2302bee58d7776271f099e52a325" title="Gets or sets the prefix in use for all locks created in this LockFactory. This is normally called onc...">LockPrefix</a> = null;</div>
<div class="line"><a name="l00210"></a><span class="lineno"> 210</span>&#160; }</div>
<div class="line"><a name="l00211"></a><span class="lineno"> 211</span>&#160; }</div>
<div class="line"><a name="l00212"></a><span class="lineno"> 212</span>&#160; }</div>
<div class="line"><a name="l00213"></a><span class="lineno"> 213</span>&#160;</div>
<div class="line"><a name="l00234"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_store_1_1_f_s_directory.html#a33ea2927779ca535c4cb90ea0dc76cfa"> 234</a></span>&#160; <span class="keyword">public</span> <span class="keyword">static</span> <a class="code" href="class_lucene_1_1_net_1_1_store_1_1_f_s_directory.html" title=" Base class for Directory implementations that store index files in the file system. There are currently three core subclasses:">FSDirectory</a> Open(<span class="keywordtype">string</span> path)</div>
<div class="line"><a name="l00235"></a><span class="lineno"> 235</span>&#160; {</div>
<div class="line"><a name="l00236"></a><span class="lineno"> 236</span>&#160; <span class="keywordflow">return</span> Open(<span class="keyword">new</span> DirectoryInfo(path), null);</div>
<div class="line"><a name="l00237"></a><span class="lineno"> 237</span>&#160; }</div>
<div class="line"><a name="l00238"></a><span class="lineno"> 238</span>&#160; </div>
<div class="line"><a name="l00259"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_store_1_1_f_s_directory.html#a4d1e2d61b9d1ab690e6714b05026d9de"> 259</a></span>&#160; <span class="keyword">public</span> <span class="keyword">static</span> <a class="code" href="class_lucene_1_1_net_1_1_store_1_1_f_s_directory.html" title=" Base class for Directory implementations that store index files in the file system. There are currently three core subclasses:">FSDirectory</a> Open(System.IO.DirectoryInfo path)</div>
<div class="line"><a name="l00260"></a><span class="lineno"> 260</span>&#160; {</div>
<div class="line"><a name="l00261"></a><span class="lineno"> 261</span>&#160; <span class="keywordflow">return</span> Open(path, null);</div>
<div class="line"><a name="l00262"></a><span class="lineno"> 262</span>&#160; }</div>
<div class="line"><a name="l00263"></a><span class="lineno"> 263</span>&#160;</div>
<div class="line"><a name="l00267"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_store_1_1_f_s_directory.html#ae69df4a802e0f14d19428a5591c00d9f"> 267</a></span>&#160; <span class="keyword">public</span> <span class="keyword">static</span> <a class="code" href="class_lucene_1_1_net_1_1_store_1_1_f_s_directory.html" title=" Base class for Directory implementations that store index files in the file system. There are currently three core subclasses:">FSDirectory</a> Open(System.IO.DirectoryInfo path, <a class="code" href="class_lucene_1_1_net_1_1_store_1_1_lock_factory.html" title="Base class for Locking implementation. Directory uses instances of this class to implement locking...">LockFactory</a> lockFactory)</div>
<div class="line"><a name="l00268"></a><span class="lineno"> 268</span>&#160; {</div>
<div class="line"><a name="l00269"></a><span class="lineno"> 269</span>&#160; <span class="comment">/* For testing:</span></div>
<div class="line"><a name="l00270"></a><span class="lineno"> 270</span>&#160;<span class="comment"> MMapDirectory dir=new MMapDirectory(path, lockFactory);</span></div>
<div class="line"><a name="l00271"></a><span class="lineno"> 271</span>&#160;<span class="comment"> dir.setUseUnmap(true);</span></div>
<div class="line"><a name="l00272"></a><span class="lineno"> 272</span>&#160;<span class="comment"> return dir;</span></div>
<div class="line"><a name="l00273"></a><span class="lineno"> 273</span>&#160;<span class="comment"> */</span></div>
<div class="line"><a name="l00274"></a><span class="lineno"> 274</span>&#160; </div>
<div class="line"><a name="l00275"></a><span class="lineno"> 275</span>&#160; <span class="keywordflow">if</span> (<a class="code" href="_documents_writer_8cs.html#a4d21c5a1cd18c33bc4f3633bd17d823b">Constants</a>.WINDOWS)</div>
<div class="line"><a name="l00276"></a><span class="lineno"> 276</span>&#160; {</div>
<div class="line"><a name="l00277"></a><span class="lineno"> 277</span>&#160; <span class="keywordflow">return</span> <span class="keyword">new</span> <a class="code" href="class_lucene_1_1_net_1_1_store_1_1_simple_f_s_directory.html" title="A straightforward implementation of FSDirectory using java.io.RandomAccessFile. However, this class has poor concurrent performance (multiple threads will bottleneck) as it synchronizes when multiple threads read from the same file. It&#39;s usually better to use NIOFSDirectory or MMapDirectory instead. ">SimpleFSDirectory</a>(path, lockFactory);</div>
<div class="line"><a name="l00278"></a><span class="lineno"> 278</span>&#160; }</div>
<div class="line"><a name="l00279"></a><span class="lineno"> 279</span>&#160; <span class="keywordflow">else</span></div>
<div class="line"><a name="l00280"></a><span class="lineno"> 280</span>&#160; {</div>
<div class="line"><a name="l00281"></a><span class="lineno"> 281</span>&#160; <span class="comment">//NIOFSDirectory is not implemented in Lucene.Net</span></div>
<div class="line"><a name="l00282"></a><span class="lineno"> 282</span>&#160; <span class="comment">//return new NIOFSDirectory(path, lockFactory);</span></div>
<div class="line"><a name="l00283"></a><span class="lineno"> 283</span>&#160; <span class="keywordflow">return</span> <span class="keyword">new</span> <a class="code" href="class_lucene_1_1_net_1_1_store_1_1_simple_f_s_directory.html" title="A straightforward implementation of FSDirectory using java.io.RandomAccessFile. However, this class has poor concurrent performance (multiple threads will bottleneck) as it synchronizes when multiple threads read from the same file. It&#39;s usually better to use NIOFSDirectory or MMapDirectory instead. ">SimpleFSDirectory</a>(path, lockFactory);</div>
<div class="line"><a name="l00284"></a><span class="lineno"> 284</span>&#160; }</div>
<div class="line"><a name="l00285"></a><span class="lineno"> 285</span>&#160; }</div>
<div class="line"><a name="l00286"></a><span class="lineno"> 286</span>&#160; </div>
<div class="line"><a name="l00297"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_store_1_1_f_s_directory.html#a4e5a5dfe5f2b8038044dcc3f20f7fa81"> 297</a></span>&#160; <span class="keyword">public</span> <span class="keyword">static</span> System.String[] ListAll(System.IO.DirectoryInfo dir)</div>
<div class="line"><a name="l00298"></a><span class="lineno"> 298</span>&#160; {</div>
<div class="line"><a name="l00299"></a><span class="lineno"> 299</span>&#160; <span class="keywordflow">if</span> (!dir.Exists)</div>
<div class="line"><a name="l00300"></a><span class="lineno"> 300</span>&#160; {</div>
<div class="line"><a name="l00301"></a><span class="lineno"> 301</span>&#160; <span class="keywordflow">throw</span> <span class="keyword">new</span> <a class="code" href="_segment_infos_8cs.html#a2a6014236e864c10f92b72d1b5ded0ec">NoSuchDirectoryException</a>(<span class="stringliteral">&quot;directory &#39;&quot;</span> + dir.FullName + <span class="stringliteral">&quot;&#39; does not exist&quot;</span>);</div>
<div class="line"><a name="l00302"></a><span class="lineno"> 302</span>&#160; }</div>
<div class="line"><a name="l00303"></a><span class="lineno"> 303</span>&#160; <span class="keywordflow">else</span> <span class="keywordflow">if</span> (System.IO.File.Exists(dir.FullName))</div>
<div class="line"><a name="l00304"></a><span class="lineno"> 304</span>&#160; {</div>
<div class="line"><a name="l00305"></a><span class="lineno"> 305</span>&#160; <span class="keywordflow">throw</span> <span class="keyword">new</span> <a class="code" href="_segment_infos_8cs.html#a2a6014236e864c10f92b72d1b5ded0ec">NoSuchDirectoryException</a>(<span class="stringliteral">&quot;File &#39;&quot;</span> + dir.FullName + <span class="stringliteral">&quot;&#39; does not exist&quot;</span>);</div>
<div class="line"><a name="l00306"></a><span class="lineno"> 306</span>&#160; }</div>
<div class="line"><a name="l00307"></a><span class="lineno"> 307</span>&#160;</div>
<div class="line"><a name="l00308"></a><span class="lineno"> 308</span>&#160; <span class="comment">// Exclude subdirs, only the file names, not the paths</span></div>
<div class="line"><a name="l00309"></a><span class="lineno"> 309</span>&#160; System.IO.FileInfo[] files = dir.GetFiles();</div>
<div class="line"><a name="l00310"></a><span class="lineno"> 310</span>&#160; System.String[] result = <span class="keyword">new</span> System.String[files.Length];</div>
<div class="line"><a name="l00311"></a><span class="lineno"> 311</span>&#160; <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i &lt; files.Length; i++)</div>
<div class="line"><a name="l00312"></a><span class="lineno"> 312</span>&#160; {</div>
<div class="line"><a name="l00313"></a><span class="lineno"> 313</span>&#160; result[i] = files[i].Name;</div>
<div class="line"><a name="l00314"></a><span class="lineno"> 314</span>&#160; }</div>
<div class="line"><a name="l00315"></a><span class="lineno"> 315</span>&#160;</div>
<div class="line"><a name="l00316"></a><span class="lineno"> 316</span>&#160; <span class="comment">// no reason to return null, if the directory cannot be listed, an exception </span></div>
<div class="line"><a name="l00317"></a><span class="lineno"> 317</span>&#160; <span class="comment">// will be thrown on the above call to dir.GetFiles()</span></div>
<div class="line"><a name="l00318"></a><span class="lineno"> 318</span>&#160; <span class="comment">// use of LINQ to create the return value array may be a bit more efficient</span></div>
<div class="line"><a name="l00319"></a><span class="lineno"> 319</span>&#160;</div>
<div class="line"><a name="l00320"></a><span class="lineno"> 320</span>&#160; <span class="keywordflow">return</span> result;</div>
<div class="line"><a name="l00321"></a><span class="lineno"> 321</span>&#160; }</div>
<div class="line"><a name="l00322"></a><span class="lineno"> 322</span>&#160; </div>
<div class="line"><a name="l00328"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_store_1_1_f_s_directory.html#aca5d785ceced2914a18c848d2481a068"> 328</a></span>&#160; <span class="keyword">public</span> <span class="keyword">override</span> System.String[] ListAll()</div>
<div class="line"><a name="l00329"></a><span class="lineno"> 329</span>&#160; {</div>
<div class="line"><a name="l00330"></a><span class="lineno"> 330</span>&#160; EnsureOpen();</div>
<div class="line"><a name="l00331"></a><span class="lineno"> 331</span>&#160; <span class="keywordflow">return</span> ListAll(internalDirectory);</div>
<div class="line"><a name="l00332"></a><span class="lineno"> 332</span>&#160; }</div>
<div class="line"><a name="l00333"></a><span class="lineno"> 333</span>&#160; </div>
<div class="line"><a name="l00335"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_store_1_1_f_s_directory.html#ab98439d9a00c3d8b5c737250c9f5590c"> 335</a></span>&#160; <span class="keyword">public</span> <span class="keyword">override</span> <span class="keywordtype">bool</span> FileExists(System.String name)</div>
<div class="line"><a name="l00336"></a><span class="lineno"> 336</span>&#160; {</div>
<div class="line"><a name="l00337"></a><span class="lineno"> 337</span>&#160; EnsureOpen();</div>
<div class="line"><a name="l00338"></a><span class="lineno"> 338</span>&#160; System.IO.FileInfo file = <span class="keyword">new</span> System.IO.FileInfo(System.IO.Path.Combine(internalDirectory.FullName, name));</div>
<div class="line"><a name="l00339"></a><span class="lineno"> 339</span>&#160; <span class="keywordflow">return</span> file.Exists;</div>
<div class="line"><a name="l00340"></a><span class="lineno"> 340</span>&#160; }</div>
<div class="line"><a name="l00341"></a><span class="lineno"> 341</span>&#160; </div>
<div class="line"><a name="l00343"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_store_1_1_f_s_directory.html#aca2ba2225c3c5f65a1d00dc38005d392"> 343</a></span>&#160; <span class="keyword">public</span> <span class="keyword">override</span> <span class="keywordtype">long</span> FileModified(System.String name)</div>
<div class="line"><a name="l00344"></a><span class="lineno"> 344</span>&#160; {</div>
<div class="line"><a name="l00345"></a><span class="lineno"> 345</span>&#160; EnsureOpen();</div>
<div class="line"><a name="l00346"></a><span class="lineno"> 346</span>&#160; System.IO.FileInfo file = <span class="keyword">new</span> System.IO.FileInfo(System.IO.Path.Combine(internalDirectory.FullName, name));</div>
<div class="line"><a name="l00347"></a><span class="lineno"> 347</span>&#160; <span class="keywordflow">return</span> (<span class="keywordtype">long</span>)file.LastWriteTime.ToUniversalTime().Subtract(<span class="keyword">new</span> DateTime(1970, 1, 1, 0, 0, 0)).TotalMilliseconds; <span class="comment">//{{LUCENENET-353}}</span></div>
<div class="line"><a name="l00348"></a><span class="lineno"> 348</span>&#160; }</div>
<div class="line"><a name="l00349"></a><span class="lineno"> 349</span>&#160; </div>
<div class="line"><a name="l00351"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_store_1_1_f_s_directory.html#a6c00a49d9b26eadc0a3849f206462e97"> 351</a></span>&#160; <span class="keyword">public</span> <span class="keyword">static</span> <span class="keywordtype">long</span> FileModified(System.IO.FileInfo directory, System.String name)</div>
<div class="line"><a name="l00352"></a><span class="lineno"> 352</span>&#160; {</div>
<div class="line"><a name="l00353"></a><span class="lineno"> 353</span>&#160; System.IO.FileInfo file = <span class="keyword">new</span> System.IO.FileInfo(System.IO.Path.Combine(directory.FullName, name));</div>
<div class="line"><a name="l00354"></a><span class="lineno"> 354</span>&#160; <span class="keywordflow">return</span> (<span class="keywordtype">long</span>)file.LastWriteTime.ToUniversalTime().Subtract(<span class="keyword">new</span> DateTime(1970, 1, 1, 0, 0, 0)).TotalMilliseconds; <span class="comment">//{{LUCENENET-353}}</span></div>
<div class="line"><a name="l00355"></a><span class="lineno"> 355</span>&#160; }</div>
<div class="line"><a name="l00356"></a><span class="lineno"> 356</span>&#160; </div>
<div class="line"><a name="l00358"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_store_1_1_f_s_directory.html#a7c57302da469d7b122d29d64e935effc"> 358</a></span>&#160; <span class="keyword">public</span> <span class="keyword">override</span> <span class="keywordtype">void</span> TouchFile(System.String name)</div>
<div class="line"><a name="l00359"></a><span class="lineno"> 359</span>&#160; {</div>
<div class="line"><a name="l00360"></a><span class="lineno"> 360</span>&#160; EnsureOpen();</div>
<div class="line"><a name="l00361"></a><span class="lineno"> 361</span>&#160; System.IO.FileInfo file = <span class="keyword">new</span> System.IO.FileInfo(System.IO.Path.Combine(internalDirectory.FullName, name));</div>
<div class="line"><a name="l00362"></a><span class="lineno"> 362</span>&#160; file.LastWriteTime = System.DateTime.Now;</div>
<div class="line"><a name="l00363"></a><span class="lineno"> 363</span>&#160; }</div>
<div class="line"><a name="l00364"></a><span class="lineno"> 364</span>&#160; </div>
<div class="line"><a name="l00366"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_store_1_1_f_s_directory.html#add4ee39c195491aeff84ee4592a84be4"> 366</a></span>&#160; <span class="keyword">public</span> <span class="keyword">override</span> <span class="keywordtype">long</span> FileLength(System.String name)</div>
<div class="line"><a name="l00367"></a><span class="lineno"> 367</span>&#160; {</div>
<div class="line"><a name="l00368"></a><span class="lineno"> 368</span>&#160; EnsureOpen();</div>
<div class="line"><a name="l00369"></a><span class="lineno"> 369</span>&#160; System.IO.FileInfo file = <span class="keyword">new</span> System.IO.FileInfo(System.IO.Path.Combine(internalDirectory.FullName, name));</div>
<div class="line"><a name="l00370"></a><span class="lineno"> 370</span>&#160; <span class="keywordflow">return</span> file.Exists ? file.Length : 0;</div>
<div class="line"><a name="l00371"></a><span class="lineno"> 371</span>&#160; }</div>
<div class="line"><a name="l00372"></a><span class="lineno"> 372</span>&#160; </div>
<div class="line"><a name="l00374"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_store_1_1_f_s_directory.html#a6d9a6a69f92227518d5e27a0363f58b0"> 374</a></span>&#160; <span class="keyword">public</span> <span class="keyword">override</span> <span class="keywordtype">void</span> DeleteFile(System.String name)</div>
<div class="line"><a name="l00375"></a><span class="lineno"> 375</span>&#160; {</div>
<div class="line"><a name="l00376"></a><span class="lineno"> 376</span>&#160; EnsureOpen();</div>
<div class="line"><a name="l00377"></a><span class="lineno"> 377</span>&#160; System.IO.FileInfo file = <span class="keyword">new</span> System.IO.FileInfo(System.IO.Path.Combine(internalDirectory.FullName, name));</div>
<div class="line"><a name="l00378"></a><span class="lineno"> 378</span>&#160; <span class="keywordflow">try</span></div>
<div class="line"><a name="l00379"></a><span class="lineno"> 379</span>&#160; {</div>
<div class="line"><a name="l00380"></a><span class="lineno"> 380</span>&#160; file.Delete();</div>
<div class="line"><a name="l00381"></a><span class="lineno"> 381</span>&#160; }</div>
<div class="line"><a name="l00382"></a><span class="lineno"> 382</span>&#160; <span class="keywordflow">catch</span> (Exception)</div>
<div class="line"><a name="l00383"></a><span class="lineno"> 383</span>&#160; {</div>
<div class="line"><a name="l00384"></a><span class="lineno"> 384</span>&#160; <span class="keywordflow">throw</span> <span class="keyword">new</span> System.IO.IOException(<span class="stringliteral">&quot;Cannot delete &quot;</span> + file);</div>
<div class="line"><a name="l00385"></a><span class="lineno"> 385</span>&#160; }</div>
<div class="line"><a name="l00386"></a><span class="lineno"> 386</span>&#160; }</div>
<div class="line"><a name="l00387"></a><span class="lineno"> 387</span>&#160; </div>
<div class="line"><a name="l00388"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_store_1_1_f_s_directory.html#abd334a77552a373adef367d6707d30ba"> 388</a></span>&#160; <span class="keyword">public</span> <span class="keyword">override</span> <span class="keywordtype">void</span> Sync(System.String name)</div>
<div class="line"><a name="l00389"></a><span class="lineno"> 389</span>&#160; {</div>
<div class="line"><a name="l00390"></a><span class="lineno"> 390</span>&#160; EnsureOpen();</div>
<div class="line"><a name="l00391"></a><span class="lineno"> 391</span>&#160; System.IO.FileInfo fullFile = <span class="keyword">new</span> System.IO.FileInfo(System.IO.Path.Combine(internalDirectory.FullName, name));</div>
<div class="line"><a name="l00392"></a><span class="lineno"> 392</span>&#160; <span class="keywordtype">bool</span> success = <span class="keyword">false</span>;</div>
<div class="line"><a name="l00393"></a><span class="lineno"> 393</span>&#160; <span class="keywordtype">int</span> retryCount = 0;</div>
<div class="line"><a name="l00394"></a><span class="lineno"> 394</span>&#160; System.IO.IOException exc = null;</div>
<div class="line"><a name="l00395"></a><span class="lineno"> 395</span>&#160; <span class="keywordflow">while</span> (!success &amp;&amp; retryCount &lt; 5)</div>
<div class="line"><a name="l00396"></a><span class="lineno"> 396</span>&#160; {</div>
<div class="line"><a name="l00397"></a><span class="lineno"> 397</span>&#160; retryCount++;</div>
<div class="line"><a name="l00398"></a><span class="lineno"> 398</span>&#160; System.IO.FileStream file = null;</div>
<div class="line"><a name="l00399"></a><span class="lineno"> 399</span>&#160; <span class="keywordflow">try</span></div>
<div class="line"><a name="l00400"></a><span class="lineno"> 400</span>&#160; {</div>
<div class="line"><a name="l00401"></a><span class="lineno"> 401</span>&#160; <span class="keywordflow">try</span></div>
<div class="line"><a name="l00402"></a><span class="lineno"> 402</span>&#160; {</div>
<div class="line"><a name="l00403"></a><span class="lineno"> 403</span>&#160; file = <span class="keyword">new</span> System.IO.FileStream(fullFile.FullName, System.IO.FileMode.OpenOrCreate, System.IO.FileAccess.Write, System.IO.FileShare.ReadWrite);</div>
<div class="line"><a name="l00404"></a><span class="lineno"> 404</span>&#160; <a class="code" href="class_lucene_1_1_net_1_1_support_1_1_file_support.html" title="Represents the methods to support some operations over files. ">FileSupport</a>.<a class="code" href="class_lucene_1_1_net_1_1_support_1_1_file_support.html#ae93d811262769a86ab5e4b765a25d7bf" title="Flushes the specified file stream. Ensures that all buffered data is actually written to the file sys...">Sync</a>(file);</div>
<div class="line"><a name="l00405"></a><span class="lineno"> 405</span>&#160; success = <span class="keyword">true</span>;</div>
<div class="line"><a name="l00406"></a><span class="lineno"> 406</span>&#160; }</div>
<div class="line"><a name="l00407"></a><span class="lineno"> 407</span>&#160; <span class="keywordflow">finally</span></div>
<div class="line"><a name="l00408"></a><span class="lineno"> 408</span>&#160; {</div>
<div class="line"><a name="l00409"></a><span class="lineno"> 409</span>&#160; <span class="keywordflow">if</span> (file != null)</div>
<div class="line"><a name="l00410"></a><span class="lineno"> 410</span>&#160; file.Close();</div>
<div class="line"><a name="l00411"></a><span class="lineno"> 411</span>&#160; }</div>
<div class="line"><a name="l00412"></a><span class="lineno"> 412</span>&#160; }</div>
<div class="line"><a name="l00413"></a><span class="lineno"> 413</span>&#160; <span class="keywordflow">catch</span> (System.IO.IOException ioe)</div>
<div class="line"><a name="l00414"></a><span class="lineno"> 414</span>&#160; {</div>
<div class="line"><a name="l00415"></a><span class="lineno"> 415</span>&#160; <span class="keywordflow">if</span> (exc == null)</div>
<div class="line"><a name="l00416"></a><span class="lineno"> 416</span>&#160; exc = ioe;</div>
<div class="line"><a name="l00417"></a><span class="lineno"> 417</span>&#160; </div>
<div class="line"><a name="l00418"></a><span class="lineno"> 418</span>&#160; <span class="comment">// Pause 5 msec</span></div>
<div class="line"><a name="l00419"></a><span class="lineno"> 419</span>&#160; System.Threading.Thread.Sleep(5);</div>
<div class="line"><a name="l00420"></a><span class="lineno"> 420</span>&#160; </div>
<div class="line"><a name="l00421"></a><span class="lineno"> 421</span>&#160; }</div>
<div class="line"><a name="l00422"></a><span class="lineno"> 422</span>&#160; }</div>
<div class="line"><a name="l00423"></a><span class="lineno"> 423</span>&#160;</div>
<div class="line"><a name="l00424"></a><span class="lineno"> 424</span>&#160; <span class="keywordflow">if</span> (!success &amp;&amp; exc != null)</div>
<div class="line"><a name="l00425"></a><span class="lineno"> 425</span>&#160; <span class="comment">// Throw original exception</span></div>
<div class="line"><a name="l00426"></a><span class="lineno"> 426</span>&#160; <span class="keywordflow">throw</span> exc;</div>
<div class="line"><a name="l00427"></a><span class="lineno"> 427</span>&#160; }</div>
<div class="line"><a name="l00428"></a><span class="lineno"> 428</span>&#160; </div>
<div class="line"><a name="l00429"></a><span class="lineno"> 429</span>&#160; <span class="comment">// Inherit javadoc</span></div>
<div class="line"><a name="l00430"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_store_1_1_f_s_directory.html#a471b2089fdd070fd543b1ffad3659ab6"> 430</a></span>&#160; <span class="keyword">public</span> <span class="keyword">override</span> <a class="code" href="class_lucene_1_1_net_1_1_store_1_1_index_input.html" title="Abstract base class for input from a file in a Directory. A random-access input stream. Used for all Lucene index input operations. ">IndexInput</a> OpenInput(System.String name)</div>
<div class="line"><a name="l00431"></a><span class="lineno"> 431</span>&#160; {</div>
<div class="line"><a name="l00432"></a><span class="lineno"> 432</span>&#160; EnsureOpen();</div>
<div class="line"><a name="l00433"></a><span class="lineno"> 433</span>&#160; <span class="keywordflow">return</span> OpenInput(name, <a class="code" href="class_lucene_1_1_net_1_1_store_1_1_buffered_index_input.html" title="Base implementation class for buffered IndexInput. ">BufferedIndexInput</a>.<a class="code" href="class_lucene_1_1_net_1_1_store_1_1_buffered_index_input.html#a57f50895a77d1f3942afac4a1df5a393" title="Default buffer size ">BUFFER_SIZE</a>);</div>
<div class="line"><a name="l00434"></a><span class="lineno"> 434</span>&#160; }</div>
<div class="line"><a name="l00435"></a><span class="lineno"> 435</span>&#160; </div>
<div class="line"><a name="l00437"></a><span class="lineno"> 437</span>&#160; <span class="keyword">private</span> <span class="keyword">static</span> readonly <span class="keywordtype">char</span>[] HEX_DIGITS = <span class="keyword">new</span> <span class="keywordtype">char</span>[]{<span class="charliteral">&#39;0&#39;</span>, <span class="charliteral">&#39;1&#39;</span>, <span class="charliteral">&#39;2&#39;</span>, <span class="charliteral">&#39;3&#39;</span>, <span class="charliteral">&#39;4&#39;</span>, <span class="charliteral">&#39;5&#39;</span>, <span class="charliteral">&#39;6&#39;</span>, <span class="charliteral">&#39;7&#39;</span>, <span class="charliteral">&#39;8&#39;</span>, <span class="charliteral">&#39;9&#39;</span>, <span class="charliteral">&#39;a&#39;</span>, <span class="charliteral">&#39;b&#39;</span>, <span class="charliteral">&#39;c&#39;</span>, <span class="charliteral">&#39;d&#39;</span>, <span class="charliteral">&#39;e&#39;</span>, <span class="charliteral">&#39;f&#39;</span>};</div>
<div class="line"><a name="l00438"></a><span class="lineno"> 438</span>&#160;</div>
<div class="line"><a name="l00439"></a><span class="lineno"> 439</span>&#160;</div>
<div class="line"><a name="l00440"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_store_1_1_f_s_directory.html#af05baabb53c64d7de5cff18b1ce2d7f4"> 440</a></span>&#160; <span class="keyword">public</span> <span class="keyword">override</span> <span class="keywordtype">string</span> GetLockId()</div>
<div class="line"><a name="l00441"></a><span class="lineno"> 441</span>&#160; {</div>
<div class="line"><a name="l00442"></a><span class="lineno"> 442</span>&#160; EnsureOpen();</div>
<div class="line"><a name="l00443"></a><span class="lineno"> 443</span>&#160; System.String dirName; <span class="comment">// name to be hashed</span></div>
<div class="line"><a name="l00444"></a><span class="lineno"> 444</span>&#160; <span class="keywordflow">try</span></div>
<div class="line"><a name="l00445"></a><span class="lineno"> 445</span>&#160; {</div>
<div class="line"><a name="l00446"></a><span class="lineno"> 446</span>&#160; dirName = internalDirectory.FullName;</div>
<div class="line"><a name="l00447"></a><span class="lineno"> 447</span>&#160; }</div>
<div class="line"><a name="l00448"></a><span class="lineno"> 448</span>&#160; <span class="keywordflow">catch</span> (System.IO.IOException e)</div>
<div class="line"><a name="l00449"></a><span class="lineno"> 449</span>&#160; {</div>
<div class="line"><a name="l00450"></a><span class="lineno"> 450</span>&#160; <span class="keywordflow">throw</span> <span class="keyword">new</span> System.SystemException(e.ToString(), e);</div>
<div class="line"><a name="l00451"></a><span class="lineno"> 451</span>&#160; }</div>
<div class="line"><a name="l00452"></a><span class="lineno"> 452</span>&#160;</div>
<div class="line"><a name="l00453"></a><span class="lineno"> 453</span>&#160; byte[] digest;</div>
<div class="line"><a name="l00454"></a><span class="lineno"> 454</span>&#160; lock (DIGESTER)</div>
<div class="line"><a name="l00455"></a><span class="lineno"> 455</span>&#160; {</div>
<div class="line"><a name="l00456"></a><span class="lineno"> 456</span>&#160; digest = DIGESTER.ComputeHash(System.Text.Encoding.UTF8.GetBytes(dirName));</div>
<div class="line"><a name="l00457"></a><span class="lineno"> 457</span>&#160; }</div>
<div class="line"><a name="l00458"></a><span class="lineno"> 458</span>&#160; System.Text.StringBuilder buf = <span class="keyword">new</span> System.Text.StringBuilder();</div>
<div class="line"><a name="l00459"></a><span class="lineno"> 459</span>&#160; buf.Append(<span class="stringliteral">&quot;lucene-&quot;</span>);</div>
<div class="line"><a name="l00460"></a><span class="lineno"> 460</span>&#160; <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i &lt; digest.Length; i++)</div>
<div class="line"><a name="l00461"></a><span class="lineno"> 461</span>&#160; {</div>
<div class="line"><a name="l00462"></a><span class="lineno"> 462</span>&#160; <span class="keywordtype">int</span> b = digest[i];</div>
<div class="line"><a name="l00463"></a><span class="lineno"> 463</span>&#160; buf.Append(HEX_DIGITS[(b &gt;&gt; 4) &amp; 0xf]);</div>
<div class="line"><a name="l00464"></a><span class="lineno"> 464</span>&#160; buf.Append(HEX_DIGITS[b &amp; 0xf]);</div>
<div class="line"><a name="l00465"></a><span class="lineno"> 465</span>&#160; }</div>
<div class="line"><a name="l00466"></a><span class="lineno"> 466</span>&#160;</div>
<div class="line"><a name="l00467"></a><span class="lineno"> 467</span>&#160; <span class="keywordflow">return</span> buf.ToString();</div>
<div class="line"><a name="l00468"></a><span class="lineno"> 468</span>&#160; }</div>
<div class="line"><a name="l00469"></a><span class="lineno"> 469</span>&#160;</div>
<div class="line"><a name="l00470"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_store_1_1_f_s_directory.html#a10db6d3563f9a06e5eacecb4b23c1aaa"> 470</a></span>&#160; <span class="keyword">protected</span> <span class="keyword">override</span> <span class="keywordtype">void</span> Dispose(<span class="keywordtype">bool</span> disposing)</div>
<div class="line"><a name="l00471"></a><span class="lineno"> 471</span>&#160; {</div>
<div class="line"><a name="l00472"></a><span class="lineno"> 472</span>&#160; lock (<span class="keyword">this</span>)</div>
<div class="line"><a name="l00473"></a><span class="lineno"> 473</span>&#160; {</div>
<div class="line"><a name="l00474"></a><span class="lineno"> 474</span>&#160; isOpen = <span class="keyword">false</span>;</div>
<div class="line"><a name="l00475"></a><span class="lineno"> 475</span>&#160; }</div>
<div class="line"><a name="l00476"></a><span class="lineno"> 476</span>&#160; }</div>
<div class="line"><a name="l00477"></a><span class="lineno"> 477</span>&#160;</div>
<div class="line"><a name="l00478"></a><span class="lineno"> 478</span>&#160; <span class="comment">// Java Lucene implements GetFile() which returns a FileInfo.</span></div>
<div class="line"><a name="l00479"></a><span class="lineno"> 479</span>&#160; <span class="comment">// For Lucene.Net, GetDirectory() is more appropriate</span></div>
<div class="line"><a name="l00480"></a><span class="lineno"> 480</span>&#160;</div>
<div class="line"><a name="l00481"></a><span class="lineno"> 481</span>&#160; <span class="keyword">public</span> <span class="keyword">virtual</span> DirectoryInfo <a class="code" href="class_lucene_1_1_net_1_1_store_1_1_directory.html" title="A Directory is a flat list of files. Files may be written once, when they are created. Once a file is created it may only be opened for read, or deleted. Random access is permitted both when reading and writing.">Directory</a></div>
<div class="line"><a name="l00482"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_store_1_1_f_s_directory.html#aa3d77002a85376ccd723d5cc0af8bdd6"> 482</a></span>&#160; {</div>
<div class="line"><a name="l00483"></a><span class="lineno"> 483</span>&#160; <span class="keyword">get</span></div>
<div class="line"><a name="l00484"></a><span class="lineno"> 484</span>&#160; {</div>
<div class="line"><a name="l00485"></a><span class="lineno"> 485</span>&#160; EnsureOpen();</div>
<div class="line"><a name="l00486"></a><span class="lineno"> 486</span>&#160; <span class="keywordflow">return</span> internalDirectory;</div>
<div class="line"><a name="l00487"></a><span class="lineno"> 487</span>&#160; }</div>
<div class="line"><a name="l00488"></a><span class="lineno"> 488</span>&#160; }</div>
<div class="line"><a name="l00489"></a><span class="lineno"> 489</span>&#160;</div>
<div class="line"><a name="l00491"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_store_1_1_f_s_directory.html#a1e632c5890208be7253c513430483271"> 491</a></span>&#160; <span class="keyword">public</span> <span class="keyword">override</span> System.String ToString()</div>
<div class="line"><a name="l00492"></a><span class="lineno"> 492</span>&#160; {</div>
<div class="line"><a name="l00493"></a><span class="lineno"> 493</span>&#160; <span class="keywordflow">return</span> this.GetType().FullName + <span class="stringliteral">&quot;@&quot;</span> + internalDirectory + <span class="stringliteral">&quot; lockFactory=&quot;</span> + <a class="code" href="class_lucene_1_1_net_1_1_store_1_1_lock_factory.html" title="Base class for Locking implementation. Directory uses instances of this class to implement locking...">LockFactory</a>;</div>
<div class="line"><a name="l00494"></a><span class="lineno"> 494</span>&#160; }</div>
<div class="line"><a name="l00495"></a><span class="lineno"> 495</span>&#160; </div>
<div class="line"><a name="l00502"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_store_1_1_f_s_directory.html#acf0169542a81c156510161d16aaf355d"> 502</a></span>&#160; <span class="keyword">public</span> <span class="keyword">static</span> readonly <span class="keywordtype">int</span> DEFAULT_READ_CHUNK_SIZE = <a class="code" href="_documents_writer_8cs.html#a4d21c5a1cd18c33bc4f3633bd17d823b">Constants</a>.JRE_IS_64BIT ? <span class="keywordtype">int</span>.MaxValue: 100 * 1024 * 1024;</div>
<div class="line"><a name="l00503"></a><span class="lineno"> 503</span>&#160; </div>
<div class="line"><a name="l00504"></a><span class="lineno"> 504</span>&#160; <span class="comment">// LUCENE-1566</span></div>
<div class="line"><a name="l00505"></a><span class="lineno"> 505</span>&#160; <span class="keyword">private</span> <span class="keywordtype">int</span> chunkSize = DEFAULT_READ_CHUNK_SIZE;</div>
<div class="line"><a name="l00506"></a><span class="lineno"> 506</span>&#160;</div>
<div class="line"><a name="l00512"></a><span class="lineno"> 512</span>&#160; <span class="keyword">public</span> <span class="keywordtype">int</span> ReadChunkSize</div>
<div class="line"><a name="l00513"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_store_1_1_f_s_directory.html#a15f6b09d7e61e94574f16a7f1af47683"> 513</a></span>&#160; {</div>
<div class="line"><a name="l00514"></a><span class="lineno"> 514</span>&#160; <span class="keyword">get</span></div>
<div class="line"><a name="l00515"></a><span class="lineno"> 515</span>&#160; {</div>
<div class="line"><a name="l00516"></a><span class="lineno"> 516</span>&#160; <span class="comment">// LUCENE-1566</span></div>
<div class="line"><a name="l00517"></a><span class="lineno"> 517</span>&#160; <span class="keywordflow">return</span> chunkSize;</div>
<div class="line"><a name="l00518"></a><span class="lineno"> 518</span>&#160; }</div>
<div class="line"><a name="l00519"></a><span class="lineno"> 519</span>&#160; <span class="keyword">set</span></div>
<div class="line"><a name="l00520"></a><span class="lineno"> 520</span>&#160; {</div>
<div class="line"><a name="l00521"></a><span class="lineno"> 521</span>&#160; <span class="comment">// LUCENE-1566</span></div>
<div class="line"><a name="l00522"></a><span class="lineno"> 522</span>&#160; <span class="keywordflow">if</span> (value &lt;= 0)</div>
<div class="line"><a name="l00523"></a><span class="lineno"> 523</span>&#160; {</div>
<div class="line"><a name="l00524"></a><span class="lineno"> 524</span>&#160; <span class="keywordflow">throw</span> <span class="keyword">new</span> System.ArgumentException(<span class="stringliteral">&quot;chunkSize must be positive&quot;</span>);</div>
<div class="line"><a name="l00525"></a><span class="lineno"> 525</span>&#160; }</div>
<div class="line"><a name="l00526"></a><span class="lineno"> 526</span>&#160; <span class="keywordflow">if</span> (!<a class="code" href="_documents_writer_8cs.html#a4d21c5a1cd18c33bc4f3633bd17d823b">Constants</a>.JRE_IS_64BIT)</div>
<div class="line"><a name="l00527"></a><span class="lineno"> 527</span>&#160; {</div>
<div class="line"><a name="l00528"></a><span class="lineno"> 528</span>&#160; this.chunkSize = value;</div>
<div class="line"><a name="l00529"></a><span class="lineno"> 529</span>&#160; }</div>
<div class="line"><a name="l00530"></a><span class="lineno"> 530</span>&#160; }</div>
<div class="line"><a name="l00531"></a><span class="lineno"> 531</span>&#160; }</div>
<div class="line"><a name="l00532"></a><span class="lineno"> 532</span>&#160; }</div>
<div class="line"><a name="l00533"></a><span class="lineno"> 533</span>&#160;}</div>
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