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&#160;<span id="projectnumber">3.0.3</span>
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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">NIOFSDirectory.cs</div> </div>
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<a href="_n_i_o_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">namespace </span>Lucene.Net.Store</div>
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span>&#160;{</div>
<div class="line"><a name="l00024"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_store_1_1_n_i_o_f_s_directory.html"> 24</a></span>&#160; <span class="keyword">public</span> <span class="keyword">class </span><a class="code" href="class_lucene_1_1_net_1_1_store_1_1_n_i_o_f_s_directory.html" title="Not implemented. Waiting for volunteers. ">NIOFSDirectory</a> : Lucene.Net.Store.<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></div>
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span>&#160; {</div>
<div class="line"><a name="l00026"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_store_1_1_n_i_o_f_s_directory.html#a1e65e4ecf06fe2a1f0bd98d920e48b2e"> 26</a></span>&#160; <span class="keyword">public</span> <a class="code" href="class_lucene_1_1_net_1_1_store_1_1_n_i_o_f_s_directory.html" title="Not implemented. Waiting for volunteers. ">NIOFSDirectory</a>(System.IO.DirectoryInfo dir, <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="l00027"></a><span class="lineno"> 27</span>&#160; : base(dir, lockFactory)</div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span>&#160; {</div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span>&#160; <span class="keywordflow">throw</span> <span class="keyword">new</span> System.NotImplementedException(<span class="stringliteral">&quot;Waiting for volunteers to implement this class&quot;</span>);</div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span>&#160; }</div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span>&#160;</div>
<div class="line"><a name="l00035"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_store_1_1_n_i_o_f_s_directory_1_1_n_i_o_f_s_index_input.html"> 35</a></span>&#160; <span class="keyword">public</span> <span class="keyword">class </span><a class="code" href="class_lucene_1_1_net_1_1_store_1_1_n_i_o_f_s_directory_1_1_n_i_o_f_s_index_input.html" title="Not implemented. Waiting for volunteers. ">NIOFSIndexInput</a></div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span>&#160; {</div>
<div class="line"><a name="l00037"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_store_1_1_n_i_o_f_s_directory_1_1_n_i_o_f_s_index_input.html#a7efc5644ed6a21c5c8fc217404d04626"> 37</a></span>&#160; <span class="keyword">public</span> <a class="code" href="class_lucene_1_1_net_1_1_store_1_1_n_i_o_f_s_directory_1_1_n_i_o_f_s_index_input.html" title="Not implemented. Waiting for volunteers. ">NIOFSIndexInput</a>()</div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span>&#160; {</div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span>&#160; <span class="keywordflow">throw</span> <span class="keyword">new</span> System.NotImplementedException(<span class="stringliteral">&quot;Waiting for volunteers to implement this class&quot;</span>);</div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span>&#160; }</div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span>&#160; }</div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span>&#160;</div>
<div class="line"><a name="l00043"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_store_1_1_n_i_o_f_s_directory.html#a1da5026348ad930c2f081770618e68a1"> 43</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_output.html" title="Abstract base class for output to a file in a Directory. A random-access output stream. Used for all Lucene index output operations. ">IndexOutput</a> CreateOutput(<span class="keywordtype">string</span> name)</div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>&#160; {</div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span>&#160; <span class="keywordflow">throw</span> <span class="keyword">new</span> System.NotImplementedException(<span class="stringliteral">&quot;Waiting for volunteers to implement this class&quot;</span>);</div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>&#160; }</div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>&#160; }</div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>&#160;}</div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>&#160;</div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>&#160;</div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>&#160;<span class="comment">//namespace Lucene.Net.Store</span></div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>&#160;<span class="comment">//{</span></div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>&#160; </div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>&#160;<span class="comment">// /// &lt;summary&gt; An &lt;see cref=&quot;FSDirectory&quot; /&gt; implementation that uses</span></div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>&#160;<span class="comment">// /// java.nio&#39;s FileChannel&#39;s positional read, which allows</span></div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>&#160;<span class="comment">// /// multiple threads to read from the same file without</span></div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>&#160;<span class="comment">// /// synchronizing.</span></div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>&#160;<span class="comment">// /// </span></div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>&#160;<span class="comment">// /// &lt;p/&gt;This class only uses FileChannel when reading; writing</span></div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>&#160;<span class="comment">// /// is achieved with &lt;see cref=&quot;SimpleFSDirectory.SimpleFSIndexOutput&quot; /&gt;.</span></div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>&#160;<span class="comment">// /// </span></div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>&#160;<span class="comment">// /// &lt;p/&gt;&lt;b&gt;NOTE&lt;/b&gt;: NIOFSDirectory is not recommended on Windows because of a bug</span></div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>&#160;<span class="comment">// /// in how FileChannel.read is implemented in Sun&#39;s JRE.</span></div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>&#160;<span class="comment">// /// Inside of the implementation the position is apparently</span></div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>&#160;<span class="comment">// /// synchronized. See &lt;a</span></div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>&#160;<span class="comment">// /// href=&quot;http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=6265734&quot;&gt;here&lt;/a&gt;</span></div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>&#160;<span class="comment">// /// for details.</span></div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>&#160;<span class="comment">// /// &lt;/summary&gt;</span></div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>&#160;<span class="comment">// public class NIOFSDirectory:FSDirectory</span></div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>&#160;<span class="comment">// {</span></div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>&#160; </div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>&#160;<span class="comment">// /// &lt;summary&gt;Create a new NIOFSDirectory for the named location.</span></div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>&#160;<span class="comment">// /// </span></div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>&#160;<span class="comment">// /// &lt;/summary&gt;</span></div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>&#160;<span class="comment">// /// &lt;param name=&quot;path&quot;&gt;the path of the directory</span></div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>&#160;<span class="comment">// /// &lt;/param&gt;</span></div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>&#160;<span class="comment">// /// &lt;param name=&quot;lockFactory&quot;&gt;the lock factory to use, or null for the default.</span></div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>&#160;<span class="comment">// /// &lt;/param&gt;</span></div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>&#160;<span class="comment">// /// &lt;throws&gt; IOException &lt;/throws&gt;</span></div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>&#160;<span class="comment">// [System.Obsolete(&quot;Use the constructor that takes a DirectoryInfo, this will be removed in the 3.0 release&quot;)]</span></div>
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>&#160;<span class="comment">// public NIOFSDirectory(System.IO.FileInfo path, LockFactory lockFactory):base(new System.IO.DirectoryInfo(path.FullName), lockFactory)</span></div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>&#160;<span class="comment">// {</span></div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>&#160;<span class="comment">// }</span></div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>&#160;</div>
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>&#160;<span class="comment">// /// &lt;summary&gt;Create a new NIOFSDirectory for the named location.</span></div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>&#160;<span class="comment">// /// </span></div>
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>&#160;<span class="comment">// /// &lt;/summary&gt;</span></div>
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>&#160;<span class="comment">// /// &lt;param name=&quot;path&quot;&gt;the path of the directory</span></div>
<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>&#160;<span class="comment">// /// &lt;/param&gt;</span></div>
<div class="line"><a name="l00090"></a><span class="lineno"> 90</span>&#160;<span class="comment">// /// &lt;param name=&quot;lockFactory&quot;&gt;the lock factory to use, or null for the default.</span></div>
<div class="line"><a name="l00091"></a><span class="lineno"> 91</span>&#160;<span class="comment">// /// &lt;/param&gt;</span></div>
<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>&#160;<span class="comment">// /// &lt;throws&gt; IOException &lt;/throws&gt;</span></div>
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>&#160;<span class="comment">// public NIOFSDirectory(System.IO.DirectoryInfo path, LockFactory lockFactory) : base(path, lockFactory)</span></div>
<div class="line"><a name="l00094"></a><span class="lineno"> 94</span>&#160;<span class="comment">// {</span></div>
<div class="line"><a name="l00095"></a><span class="lineno"> 95</span>&#160;<span class="comment">// }</span></div>
<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>&#160; </div>
<div class="line"><a name="l00097"></a><span class="lineno"> 97</span>&#160;<span class="comment">// /// &lt;summary&gt;Create a new NIOFSDirectory for the named location and the default lock factory.</span></div>
<div class="line"><a name="l00098"></a><span class="lineno"> 98</span>&#160;<span class="comment">// /// </span></div>
<div class="line"><a name="l00099"></a><span class="lineno"> 99</span>&#160;<span class="comment">// /// &lt;/summary&gt;</span></div>
<div class="line"><a name="l00100"></a><span class="lineno"> 100</span>&#160;<span class="comment">// /// &lt;param name=&quot;path&quot;&gt;the path of the directory</span></div>
<div class="line"><a name="l00101"></a><span class="lineno"> 101</span>&#160;<span class="comment">// /// &lt;/param&gt;</span></div>
<div class="line"><a name="l00102"></a><span class="lineno"> 102</span>&#160;<span class="comment">// /// &lt;throws&gt; IOException &lt;/throws&gt;</span></div>
<div class="line"><a name="l00103"></a><span class="lineno"> 103</span>&#160;<span class="comment">// [System.Obsolete(&quot;Use the constructor that takes a DirectoryInfo, this will be removed in the 3.0 release&quot;)]</span></div>
<div class="line"><a name="l00104"></a><span class="lineno"> 104</span>&#160;<span class="comment">// public NIOFSDirectory(System.IO.FileInfo path):base(new System.IO.DirectoryInfo(path.FullName), null)</span></div>
<div class="line"><a name="l00105"></a><span class="lineno"> 105</span>&#160;<span class="comment">// {</span></div>
<div class="line"><a name="l00106"></a><span class="lineno"> 106</span>&#160;<span class="comment">// }</span></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="comment">// /// &lt;summary&gt;Create a new NIOFSDirectory for the named location and the default lock factory.</span></div>
<div class="line"><a name="l00109"></a><span class="lineno"> 109</span>&#160;<span class="comment">// /// </span></div>
<div class="line"><a name="l00110"></a><span class="lineno"> 110</span>&#160;<span class="comment">// /// &lt;/summary&gt;</span></div>
<div class="line"><a name="l00111"></a><span class="lineno"> 111</span>&#160;<span class="comment">// /// &lt;param name=&quot;path&quot;&gt;the path of the directory</span></div>
<div class="line"><a name="l00112"></a><span class="lineno"> 112</span>&#160;<span class="comment">// /// &lt;/param&gt;</span></div>
<div class="line"><a name="l00113"></a><span class="lineno"> 113</span>&#160;<span class="comment">// /// &lt;throws&gt; IOException &lt;/throws&gt;</span></div>
<div class="line"><a name="l00114"></a><span class="lineno"> 114</span>&#160;<span class="comment">// public NIOFSDirectory(System.IO.DirectoryInfo path) : base(path, null)</span></div>
<div class="line"><a name="l00115"></a><span class="lineno"> 115</span>&#160;<span class="comment">// {</span></div>
<div class="line"><a name="l00116"></a><span class="lineno"> 116</span>&#160;<span class="comment">// }</span></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;<span class="comment">// // back compatibility so FSDirectory can instantiate via reflection</span></div>
<div class="line"><a name="l00119"></a><span class="lineno"> 119</span>&#160;<span class="comment">// /// &lt;deprecated&gt; </span></div>
<div class="line"><a name="l00120"></a><span class="lineno"> 120</span>&#160;<span class="comment">// /// &lt;/deprecated&gt;</span></div>
<div class="line"><a name="l00121"></a><span class="lineno"> 121</span>&#160;<span class="comment">// [Obsolete]</span></div>
<div class="line"><a name="l00122"></a><span class="lineno"> 122</span>&#160;<span class="comment">// internal NIOFSDirectory()</span></div>
<div class="line"><a name="l00123"></a><span class="lineno"> 123</span>&#160;<span class="comment">// {</span></div>
<div class="line"><a name="l00124"></a><span class="lineno"> 124</span>&#160;<span class="comment">// }</span></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="comment">// /// &lt;summary&gt;Creates an IndexInput for the file with the given name. &lt;/summary&gt;</span></div>
<div class="line"><a name="l00127"></a><span class="lineno"> 127</span>&#160;<span class="comment">// public override IndexInput OpenInput(System.String name, int bufferSize)</span></div>
<div class="line"><a name="l00128"></a><span class="lineno"> 128</span>&#160;<span class="comment">// {</span></div>
<div class="line"><a name="l00129"></a><span class="lineno"> 129</span>&#160;<span class="comment">// EnsureOpen();</span></div>
<div class="line"><a name="l00130"></a><span class="lineno"> 130</span>&#160;<span class="comment">// return new NIOFSIndexInput(new System.IO.FileInfo(System.IO.Path.Combine(GetFile().FullName, name)), bufferSize, GetReadChunkSize());</span></div>
<div class="line"><a name="l00131"></a><span class="lineno"> 131</span>&#160;<span class="comment">// }</span></div>
<div class="line"><a name="l00132"></a><span class="lineno"> 132</span>&#160; </div>
<div class="line"><a name="l00133"></a><span class="lineno"> 133</span>&#160;<span class="comment">// /// &lt;summary&gt;Creates an IndexOutput for the file with the given name. &lt;/summary&gt;</span></div>
<div class="line"><a name="l00134"></a><span class="lineno"> 134</span>&#160;<span class="comment">// public override IndexOutput CreateOutput(System.String name)</span></div>
<div class="line"><a name="l00135"></a><span class="lineno"> 135</span>&#160;<span class="comment">// {</span></div>
<div class="line"><a name="l00136"></a><span class="lineno"> 136</span>&#160;<span class="comment">// InitOutput(name);</span></div>
<div class="line"><a name="l00137"></a><span class="lineno"> 137</span>&#160;<span class="comment">// return new SimpleFSDirectory.SimpleFSIndexOutput(new System.IO.FileInfo(System.IO.Path.Combine(directory.FullName, name)));</span></div>
<div class="line"><a name="l00138"></a><span class="lineno"> 138</span>&#160;<span class="comment">// }</span></div>
<div class="line"><a name="l00139"></a><span class="lineno"> 139</span>&#160; </div>
<div class="line"><a name="l00140"></a><span class="lineno"> 140</span>&#160;<span class="comment">// public /*protected internal*/ class NIOFSIndexInput:SimpleFSDirectory.SimpleFSIndexInput</span></div>
<div class="line"><a name="l00141"></a><span class="lineno"> 141</span>&#160;<span class="comment">// {</span></div>
<div class="line"><a name="l00142"></a><span class="lineno"> 142</span>&#160; </div>
<div class="line"><a name="l00143"></a><span class="lineno"> 143</span>&#160;<span class="comment">// private System.IO.MemoryStream byteBuf; // wraps the buffer for NIO</span></div>
<div class="line"><a name="l00144"></a><span class="lineno"> 144</span>&#160; </div>
<div class="line"><a name="l00145"></a><span class="lineno"> 145</span>&#160;<span class="comment">// private byte[] otherBuffer;</span></div>
<div class="line"><a name="l00146"></a><span class="lineno"> 146</span>&#160;<span class="comment">// private System.IO.MemoryStream otherByteBuf;</span></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;<span class="comment">// internal System.IO.BinaryReader channel;</span></div>
<div class="line"><a name="l00149"></a><span class="lineno"> 149</span>&#160; </div>
<div class="line"><a name="l00150"></a><span class="lineno"> 150</span>&#160;<span class="comment">// /// &lt;deprecated&gt; Please use ctor taking chunkSize </span></div>
<div class="line"><a name="l00151"></a><span class="lineno"> 151</span>&#160;<span class="comment">// /// &lt;/deprecated&gt;</span></div>
<div class="line"><a name="l00152"></a><span class="lineno"> 152</span>&#160;<span class="comment">// [Obsolete(&quot;Please use ctor taking chunkSize&quot;)]</span></div>
<div class="line"><a name="l00153"></a><span class="lineno"> 153</span>&#160;<span class="comment">// public NIOFSIndexInput(System.IO.FileInfo path, int bufferSize):this(path, bufferSize, FSDirectory.DEFAULT_READ_CHUNK_SIZE)</span></div>
<div class="line"><a name="l00154"></a><span class="lineno"> 154</span>&#160;<span class="comment">// {</span></div>
<div class="line"><a name="l00155"></a><span class="lineno"> 155</span>&#160;<span class="comment">// }</span></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="comment">// public NIOFSIndexInput(System.IO.FileInfo path, int bufferSize, int chunkSize):base(path, bufferSize, chunkSize)</span></div>
<div class="line"><a name="l00158"></a><span class="lineno"> 158</span>&#160;<span class="comment">// {</span></div>
<div class="line"><a name="l00159"></a><span class="lineno"> 159</span>&#160;<span class="comment">// channel = (System.IO.BinaryReader) file;</span></div>
<div class="line"><a name="l00160"></a><span class="lineno"> 160</span>&#160;<span class="comment">// }</span></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;<span class="comment">// protected internal override void NewBuffer(byte[] newBuffer)</span></div>
<div class="line"><a name="l00163"></a><span class="lineno"> 163</span>&#160;<span class="comment">// {</span></div>
<div class="line"><a name="l00164"></a><span class="lineno"> 164</span>&#160;<span class="comment">// base.NewBuffer(newBuffer);</span></div>
<div class="line"><a name="l00165"></a><span class="lineno"> 165</span>&#160;<span class="comment">// // {{Aroush-2.9}} byteBuf = ByteBuffer.wrap(newBuffer);</span></div>
<div class="line"><a name="l00166"></a><span class="lineno"> 166</span>&#160;<span class="comment">// System.Diagnostics.Debug.Fail(&quot;Port issue:&quot;, &quot;byteBuf = ByteBuffer.wrap(newBuffer)&quot;); // {{Aroush-2.9}}</span></div>
<div class="line"><a name="l00167"></a><span class="lineno"> 167</span>&#160;<span class="comment">// }</span></div>
<div class="line"><a name="l00168"></a><span class="lineno"> 168</span>&#160; </div>
<div class="line"><a name="l00169"></a><span class="lineno"> 169</span>&#160;<span class="comment">// public override void Close()</span></div>
<div class="line"><a name="l00170"></a><span class="lineno"> 170</span>&#160;<span class="comment">// {</span></div>
<div class="line"><a name="l00171"></a><span class="lineno"> 171</span>&#160;<span class="comment">// if (!isClone &amp;&amp; file.isOpen)</span></div>
<div class="line"><a name="l00172"></a><span class="lineno"> 172</span>&#160;<span class="comment">// {</span></div>
<div class="line"><a name="l00173"></a><span class="lineno"> 173</span>&#160;<span class="comment">// // Close the channel &amp; file</span></div>
<div class="line"><a name="l00174"></a><span class="lineno"> 174</span>&#160;<span class="comment">// try</span></div>
<div class="line"><a name="l00175"></a><span class="lineno"> 175</span>&#160;<span class="comment">// {</span></div>
<div class="line"><a name="l00176"></a><span class="lineno"> 176</span>&#160;<span class="comment">// channel.Close();</span></div>
<div class="line"><a name="l00177"></a><span class="lineno"> 177</span>&#160;<span class="comment">// }</span></div>
<div class="line"><a name="l00178"></a><span class="lineno"> 178</span>&#160;<span class="comment">// finally</span></div>
<div class="line"><a name="l00179"></a><span class="lineno"> 179</span>&#160;<span class="comment">// {</span></div>
<div class="line"><a name="l00180"></a><span class="lineno"> 180</span>&#160;<span class="comment">// file.Close();</span></div>
<div class="line"><a name="l00181"></a><span class="lineno"> 181</span>&#160;<span class="comment">// }</span></div>
<div class="line"><a name="l00182"></a><span class="lineno"> 182</span>&#160;<span class="comment">// }</span></div>
<div class="line"><a name="l00183"></a><span class="lineno"> 183</span>&#160;<span class="comment">// }</span></div>
<div class="line"><a name="l00184"></a><span class="lineno"> 184</span>&#160; </div>
<div class="line"><a name="l00185"></a><span class="lineno"> 185</span>&#160;<span class="comment">// public override void ReadInternal(byte[] b, int offset, int len)</span></div>
<div class="line"><a name="l00186"></a><span class="lineno"> 186</span>&#160;<span class="comment">// {</span></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">// System.IO.MemoryStream bb;</span></div>
<div class="line"><a name="l00189"></a><span class="lineno"> 189</span>&#160; </div>
<div class="line"><a name="l00190"></a><span class="lineno"> 190</span>&#160;<span class="comment">// // Determine the ByteBuffer we should use</span></div>
<div class="line"><a name="l00191"></a><span class="lineno"> 191</span>&#160;<span class="comment">// if (b == buffer &amp;&amp; 0 == offset)</span></div>
<div class="line"><a name="l00192"></a><span class="lineno"> 192</span>&#160;<span class="comment">// {</span></div>
<div class="line"><a name="l00193"></a><span class="lineno"> 193</span>&#160;<span class="comment">// // Use our own pre-wrapped byteBuf:</span></div>
<div class="line"><a name="l00194"></a><span class="lineno"> 194</span>&#160;<span class="comment">// System.Diagnostics.Debug.Assert(byteBuf != null);</span></div>
<div class="line"><a name="l00195"></a><span class="lineno"> 195</span>&#160;<span class="comment">// byteBuf.Position = 0;</span></div>
<div class="line"><a name="l00196"></a><span class="lineno"> 196</span>&#160;<span class="comment">// byteBuf.Capacity = len;</span></div>
<div class="line"><a name="l00197"></a><span class="lineno"> 197</span>&#160;<span class="comment">// bb = byteBuf;</span></div>
<div class="line"><a name="l00198"></a><span class="lineno"> 198</span>&#160;<span class="comment">// }</span></div>
<div class="line"><a name="l00199"></a><span class="lineno"> 199</span>&#160;<span class="comment">// else</span></div>
<div class="line"><a name="l00200"></a><span class="lineno"> 200</span>&#160;<span class="comment">// {</span></div>
<div class="line"><a name="l00201"></a><span class="lineno"> 201</span>&#160;<span class="comment">// if (offset == 0)</span></div>
<div class="line"><a name="l00202"></a><span class="lineno"> 202</span>&#160;<span class="comment">// {</span></div>
<div class="line"><a name="l00203"></a><span class="lineno"> 203</span>&#160;<span class="comment">// if (otherBuffer != b)</span></div>
<div class="line"><a name="l00204"></a><span class="lineno"> 204</span>&#160;<span class="comment">// {</span></div>
<div class="line"><a name="l00205"></a><span class="lineno"> 205</span>&#160;<span class="comment">// // Now wrap this other buffer; with compound</span></div>
<div class="line"><a name="l00206"></a><span class="lineno"> 206</span>&#160;<span class="comment">// // file, we are repeatedly called with its</span></div>
<div class="line"><a name="l00207"></a><span class="lineno"> 207</span>&#160;<span class="comment">// // buffer, so we wrap it once and then re-use it</span></div>
<div class="line"><a name="l00208"></a><span class="lineno"> 208</span>&#160;<span class="comment">// // on subsequent calls</span></div>
<div class="line"><a name="l00209"></a><span class="lineno"> 209</span>&#160;<span class="comment">// otherBuffer = b;</span></div>
<div class="line"><a name="l00210"></a><span class="lineno"> 210</span>&#160;<span class="comment">// // otherByteBuf = ByteBuffer.wrap(b); {{Aroush-2.9}}</span></div>
<div class="line"><a name="l00211"></a><span class="lineno"> 211</span>&#160;<span class="comment">// System.Diagnostics.Debug.Fail(&quot;Port issue:&quot;, &quot;otherByteBuf = ByteBuffer.wrap(b)&quot;); // {{Aroush-2.9}}</span></div>
<div class="line"><a name="l00212"></a><span class="lineno"> 212</span>&#160;<span class="comment">// }</span></div>
<div class="line"><a name="l00213"></a><span class="lineno"> 213</span>&#160;<span class="comment">// else</span></div>
<div class="line"><a name="l00214"></a><span class="lineno"> 214</span>&#160;<span class="comment">// otherByteBuf.Position = 0;</span></div>
<div class="line"><a name="l00215"></a><span class="lineno"> 215</span>&#160;<span class="comment">// otherByteBuf.Capacity = len;</span></div>
<div class="line"><a name="l00216"></a><span class="lineno"> 216</span>&#160;<span class="comment">// bb = otherByteBuf;</span></div>
<div class="line"><a name="l00217"></a><span class="lineno"> 217</span>&#160;<span class="comment">// }</span></div>
<div class="line"><a name="l00218"></a><span class="lineno"> 218</span>&#160;<span class="comment">// else</span></div>
<div class="line"><a name="l00219"></a><span class="lineno"> 219</span>&#160;<span class="comment">// {</span></div>
<div class="line"><a name="l00220"></a><span class="lineno"> 220</span>&#160;<span class="comment">// // Always wrap when offset != 0</span></div>
<div class="line"><a name="l00221"></a><span class="lineno"> 221</span>&#160;<span class="comment">// bb = null; // bb = ByteBuffer.wrap(b, offset, len); {{Aroush-2.9}}</span></div>
<div class="line"><a name="l00222"></a><span class="lineno"> 222</span>&#160;<span class="comment">// System.Diagnostics.Debug.Fail(&quot;Port issue:&quot;, &quot;bb = ByteBuffer.wrap(b, offset, len)&quot;); // {{Aroush-2.9}}</span></div>
<div class="line"><a name="l00223"></a><span class="lineno"> 223</span>&#160;<span class="comment">// }</span></div>
<div class="line"><a name="l00224"></a><span class="lineno"> 224</span>&#160;<span class="comment">// }</span></div>
<div class="line"><a name="l00225"></a><span class="lineno"> 225</span>&#160; </div>
<div class="line"><a name="l00226"></a><span class="lineno"> 226</span>&#160;<span class="comment">// int readOffset = (int) bb.Position;</span></div>
<div class="line"><a name="l00227"></a><span class="lineno"> 227</span>&#160;<span class="comment">// int readLength = bb.Capacity - readOffset;</span></div>
<div class="line"><a name="l00228"></a><span class="lineno"> 228</span>&#160;<span class="comment">// System.Diagnostics.Debug.Assert(readLength == len);</span></div>
<div class="line"><a name="l00229"></a><span class="lineno"> 229</span>&#160; </div>
<div class="line"><a name="l00230"></a><span class="lineno"> 230</span>&#160;<span class="comment">// long pos = GetFilePointer();</span></div>
<div class="line"><a name="l00231"></a><span class="lineno"> 231</span>&#160; </div>
<div class="line"><a name="l00232"></a><span class="lineno"> 232</span>&#160;<span class="comment">// try</span></div>
<div class="line"><a name="l00233"></a><span class="lineno"> 233</span>&#160;<span class="comment">// {</span></div>
<div class="line"><a name="l00234"></a><span class="lineno"> 234</span>&#160;<span class="comment">// while (readLength &gt; 0)</span></div>
<div class="line"><a name="l00235"></a><span class="lineno"> 235</span>&#160;<span class="comment">// {</span></div>
<div class="line"><a name="l00236"></a><span class="lineno"> 236</span>&#160;<span class="comment">// int limit;</span></div>
<div class="line"><a name="l00237"></a><span class="lineno"> 237</span>&#160;<span class="comment">// if (readLength &gt; chunkSize)</span></div>
<div class="line"><a name="l00238"></a><span class="lineno"> 238</span>&#160;<span class="comment">// {</span></div>
<div class="line"><a name="l00239"></a><span class="lineno"> 239</span>&#160;<span class="comment">// // LUCENE-1566 - work around JVM Bug by breaking</span></div>
<div class="line"><a name="l00240"></a><span class="lineno"> 240</span>&#160;<span class="comment">// // very large reads into chunks</span></div>
<div class="line"><a name="l00241"></a><span class="lineno"> 241</span>&#160;<span class="comment">// limit = readOffset + chunkSize;</span></div>
<div class="line"><a name="l00242"></a><span class="lineno"> 242</span>&#160;<span class="comment">// }</span></div>
<div class="line"><a name="l00243"></a><span class="lineno"> 243</span>&#160;<span class="comment">// else</span></div>
<div class="line"><a name="l00244"></a><span class="lineno"> 244</span>&#160;<span class="comment">// {</span></div>
<div class="line"><a name="l00245"></a><span class="lineno"> 245</span>&#160;<span class="comment">// limit = readOffset + readLength;</span></div>
<div class="line"><a name="l00246"></a><span class="lineno"> 246</span>&#160;<span class="comment">// }</span></div>
<div class="line"><a name="l00247"></a><span class="lineno"> 247</span>&#160;<span class="comment">// bb.Capacity = limit;</span></div>
<div class="line"><a name="l00248"></a><span class="lineno"> 248</span>&#160;<span class="comment">// int i = -1; // int i = channel.Read(bb, pos, limit); // {{Aroush-2.9}} must read from &#39;channel&#39; into &#39;bb&#39;</span></div>
<div class="line"><a name="l00249"></a><span class="lineno"> 249</span>&#160;<span class="comment">// System.Diagnostics.Debug.Fail(&quot;Port issue:&quot;, &quot;channel.Read(bb, pos, limit)&quot;); // {{Aroush-2.9}}</span></div>
<div class="line"><a name="l00250"></a><span class="lineno"> 250</span>&#160;<span class="comment">// if (i == - 1)</span></div>
<div class="line"><a name="l00251"></a><span class="lineno"> 251</span>&#160;<span class="comment">// {</span></div>
<div class="line"><a name="l00252"></a><span class="lineno"> 252</span>&#160;<span class="comment">// throw new System.IO.IOException(&quot;read past EOF&quot;);</span></div>
<div class="line"><a name="l00253"></a><span class="lineno"> 253</span>&#160;<span class="comment">// }</span></div>
<div class="line"><a name="l00254"></a><span class="lineno"> 254</span>&#160;<span class="comment">// pos += i;</span></div>
<div class="line"><a name="l00255"></a><span class="lineno"> 255</span>&#160;<span class="comment">// readOffset += i;</span></div>
<div class="line"><a name="l00256"></a><span class="lineno"> 256</span>&#160;<span class="comment">// readLength -= i;</span></div>
<div class="line"><a name="l00257"></a><span class="lineno"> 257</span>&#160;<span class="comment">// }</span></div>
<div class="line"><a name="l00258"></a><span class="lineno"> 258</span>&#160;<span class="comment">// }</span></div>
<div class="line"><a name="l00259"></a><span class="lineno"> 259</span>&#160;<span class="comment">// catch (System.OutOfMemoryException e)</span></div>
<div class="line"><a name="l00260"></a><span class="lineno"> 260</span>&#160;<span class="comment">// {</span></div>
<div class="line"><a name="l00261"></a><span class="lineno"> 261</span>&#160;<span class="comment">// // propagate OOM up and add a hint for 32bit VM Users hitting the bug</span></div>
<div class="line"><a name="l00262"></a><span class="lineno"> 262</span>&#160;<span class="comment">// // with a large chunk size in the fast path.</span></div>
<div class="line"><a name="l00263"></a><span class="lineno"> 263</span>&#160;<span class="comment">// System.OutOfMemoryException outOfMemoryError = new System.OutOfMemoryException(&quot;OutOfMemoryError likely caused by the Sun VM Bug described in &quot; + &quot;https://issues.apache.org/jira/browse/LUCENE-1566; try calling FSDirectory.setReadChunkSize &quot; + &quot;with a a value smaller than the current chunk size (&quot; + chunkSize + &quot;)&quot;, e);</span></div>
<div class="line"><a name="l00264"></a><span class="lineno"> 264</span>&#160;<span class="comment">// throw outOfMemoryError;</span></div>
<div class="line"><a name="l00265"></a><span class="lineno"> 265</span>&#160;<span class="comment">// }</span></div>
<div class="line"><a name="l00266"></a><span class="lineno"> 266</span>&#160;<span class="comment">// }</span></div>
<div class="line"><a name="l00267"></a><span class="lineno"> 267</span>&#160;<span class="comment">// }</span></div>
<div class="line"><a name="l00268"></a><span class="lineno"> 268</span>&#160;<span class="comment">// }</span></div>
<div class="line"><a name="l00269"></a><span class="lineno"> 269</span>&#160;<span class="comment">//}</span></div>
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