| <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> |
| <html xmlns="http://www.w3.org/1999/xhtml"> |
| <head> |
| <meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/> |
| <meta http-equiv="X-UA-Compatible" content="IE=9"/> |
| <meta name="generator" content="Doxygen 1.8.3"/> |
| <title>Lucene.Net: core/Search/FilterManager.cs Source File</title> |
| <link href="../../tabs.css" rel="stylesheet" type="text/css"/> |
| <script type="text/javascript" src="../../jquery.js"></script> |
| <script type="text/javascript" src="../../dynsections.js"></script> |
| <link href="../../search/search.css" rel="stylesheet" type="text/css"/> |
| <script type="text/javascript" src="../../search/search.js"></script> |
| <script type="text/javascript"> |
| $(document).ready(function() { searchBox.OnSelectItem(0); }); |
| </script> |
| <link href="../../doxygen.css" rel="stylesheet" type="text/css" /> |
| </head> |
| <body> |
| <div id="top"><!-- do not remove this div, it is closed by doxygen! --> |
| <div id="titlearea"> |
| <table cellspacing="0" cellpadding="0"> |
| <tbody> |
| <tr style="height: 56px;"> |
| <td id="projectlogo"><img alt="Logo" src="../../lucene-net-icon-128x128.png"/></td> |
| <td style="padding-left: 0.5em;"> |
| <div id="projectname">Lucene.Net |
|  <span id="projectnumber">3.0.3</span> |
| </div> |
| <div id="projectbrief">Lucene.Net is a port of the Lucene search engine library, written in C# and targeted at .NET runtime users.</div> |
| </td> |
| </tr> |
| </tbody> |
| </table> |
| </div> |
| <!-- end header part --> |
| <!-- Generated by Doxygen 1.8.3 --> |
| <script type="text/javascript"> |
| var searchBox = new SearchBox("searchBox", "../../search",false,'Search'); |
| </script> |
| <div id="navrow1" class="tabs"> |
| <ul class="tablist"> |
| <li><a href="../../index.html"><span>Main Page</span></a></li> |
| <li><a href="../../annotated.html"><span>Classes</span></a></li> |
| <li class="current"><a href="../../files.html"><span>Files</span></a></li> |
| <li> |
| <div id="MSearchBox" class="MSearchBoxInactive"> |
| <span class="left"> |
| <img id="MSearchSelect" src="../../search/mag_sel.png" |
| onmouseover="return searchBox.OnSearchSelectShow()" |
| onmouseout="return searchBox.OnSearchSelectHide()" |
| alt=""/> |
| <input type="text" id="MSearchField" value="Search" accesskey="S" |
| onfocus="searchBox.OnSearchFieldFocus(true)" |
| onblur="searchBox.OnSearchFieldFocus(false)" |
| onkeyup="searchBox.OnSearchFieldChange(event)"/> |
| </span><span class="right"> |
| <a id="MSearchClose" href="javascript:searchBox.CloseResultsWindow()"><img id="MSearchCloseImg" border="0" src="../../search/close.png" alt=""/></a> |
| </span> |
| </div> |
| </li> |
| </ul> |
| </div> |
| <div id="navrow2" class="tabs2"> |
| <ul class="tablist"> |
| <li><a href="../../files.html"><span>File List</span></a></li> |
| <li><a href="../../globals.html"><span>File Members</span></a></li> |
| </ul> |
| </div> |
| <!-- window showing the filter options --> |
| <div id="MSearchSelectWindow" |
| onmouseover="return searchBox.OnSearchSelectShow()" |
| onmouseout="return searchBox.OnSearchSelectHide()" |
| onkeydown="return searchBox.OnSearchSelectKey(event)"> |
| <a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(0)"><span class="SelectionMark"> </span>All</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(1)"><span class="SelectionMark"> </span>Classes</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(2)"><span class="SelectionMark"> </span>Namespaces</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(3)"><span class="SelectionMark"> </span>Files</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(4)"><span class="SelectionMark"> </span>Functions</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(5)"><span class="SelectionMark"> </span>Variables</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(6)"><span class="SelectionMark"> </span>Typedefs</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(7)"><span class="SelectionMark"> </span>Enumerations</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(8)"><span class="SelectionMark"> </span>Properties</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(9)"><span class="SelectionMark"> </span>Pages</a></div> |
| |
| <!-- iframe showing the search results (closed by default) --> |
| <div id="MSearchResultsWindow"> |
| <iframe src="javascript:void(0)" frameborder="0" |
| name="MSearchResults" id="MSearchResults"> |
| </iframe> |
| </div> |
| |
| <div id="nav-path" class="navpath"> |
| <ul> |
| <li class="navelem"><a class="el" href="../../dir_1efe588324fc547683bba4a3f1bac847.html">core</a></li><li class="navelem"><a class="el" href="../../dir_56f9b3c34a852b92179da152ee78b823.html">Search</a></li> </ul> |
| </div> |
| </div><!-- top --> |
| <div class="header"> |
| <div class="headertitle"> |
| <div class="title">FilterManager.cs</div> </div> |
| </div><!--header--> |
| <div class="contents"> |
| <a href="../../d4/df8/_filter_manager_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> <span class="comment">/* </span></div> |
| <div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <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> <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> <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> <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> <span class="comment"> * (the "License"); you may not use this file except in compliance with</span></div> |
| <div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <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> <span class="comment"> * </span></div> |
| <div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <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> <span class="comment"> * </span></div> |
| <div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <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> <span class="comment"> * distributed under the License is distributed on an "AS IS" BASIS,</span></div> |
| <div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <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> <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> <span class="comment"> * limitations under the License.</span></div> |
| <div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="comment"> */</span></div> |
| <div class="line"><a name="l00017"></a><span class="lineno"> 17</span> </div> |
| <div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="keyword">using</span> System;</div> |
| <div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="keyword">using</span> System.Collections.Generic;</div> |
| <div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="keyword">using</span> System.Linq;</div> |
| <div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="keyword">using</span> Lucene.Net.Support;</div> |
| <div class="line"><a name="l00022"></a><span class="lineno"> 22</span> </div> |
| <div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="keyword">namespace </span>Lucene.Net.Search</div> |
| <div class="line"><a name="l00024"></a><span class="lineno"> 24</span> {</div> |
| <div class="line"><a name="l00025"></a><span class="lineno"> 25</span>  <span class="comment"></span></div> |
| <div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="comment"> /// <summary> Filter caching singleton. It can be used </span></div> |
| <div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="comment"> /// to save filters locally for reuse.</span></div> |
| <div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="comment"> /// This class makes it possble to cache Filters even when using RMI, as it</span></div> |
| <div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="comment"> /// keeps the cache on the seaercher side of the RMI connection.</span></div> |
| <div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="comment"> /// </span></div> |
| <div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="comment"> /// Also could be used as a persistent storage for any filter as long as the</span></div> |
| <div class="line"><a name="l00032"></a><span class="lineno"> 32</span> <span class="comment"> /// filter provides a proper hashCode(), as that is used as the key in the cache.</span></div> |
| <div class="line"><a name="l00033"></a><span class="lineno"> 33</span> <span class="comment"> /// </span></div> |
| <div class="line"><a name="l00034"></a><span class="lineno"> 34</span> <span class="comment"> /// The cache is periodically cleaned up from a separate thread to ensure the</span></div> |
| <div class="line"><a name="l00035"></a><span class="lineno"> 35</span> <span class="comment"> /// cache doesn't exceed the maximum size.</span></div> |
| <div class="line"><a name="l00036"></a><span class="lineno"> 36</span> <span class="comment"> /// </summary></span></div> |
| <div class="line"><a name="l00037"></a><span class="lineno"><a class="code" href="../../d8/d5c/class_lucene_1_1_net_1_1_search_1_1_filter_manager.html"> 37</a></span> <span class="comment"></span> <span class="keyword">public</span> <span class="keyword">class </span><a class="code" href="../../d8/d5c/class_lucene_1_1_net_1_1_search_1_1_filter_manager.html" title="Filter caching singleton. It can be used to save filters locally for reuse. This class makes it possb...">FilterManager</a></div> |
| <div class="line"><a name="l00038"></a><span class="lineno"> 38</span>  {</div> |
| <div class="line"><a name="l00039"></a><span class="lineno"> 39</span>  </div> |
| <div class="line"><a name="l00040"></a><span class="lineno"> 40</span>  <span class="keyword">protected</span> <span class="keyword">internal</span> <span class="keyword">static</span> <a class="code" href="../../d8/d5c/class_lucene_1_1_net_1_1_search_1_1_filter_manager.html" title="Filter caching singleton. It can be used to save filters locally for reuse. This class makes it possb...">FilterManager</a> manager;</div> |
| <div class="line"><a name="l00041"></a><span class="lineno"> 41</span>  <span class="comment"></span></div> |
| <div class="line"><a name="l00042"></a><span class="lineno"> 42</span> <span class="comment"> /// <summary>The default maximum number of Filters in the cache </summary></span></div> |
| <div class="line"><a name="l00043"></a><span class="lineno"> 43</span> <span class="comment"></span> <span class="keyword">protected</span> <span class="keyword">internal</span> <span class="keyword">const</span> <span class="keywordtype">int</span> DEFAULT_CACHE_CLEAN_SIZE = 100;<span class="comment"></span></div> |
| <div class="line"><a name="l00044"></a><span class="lineno"> 44</span> <span class="comment"> /// <summary>The default frequency of cache clenup </summary></span></div> |
| <div class="line"><a name="l00045"></a><span class="lineno"> 45</span> <span class="comment"></span> <span class="keyword">protected</span> <span class="keyword">internal</span> <span class="keyword">const</span> <span class="keywordtype">long</span> DEFAULT_CACHE_SLEEP_TIME = 1000 * 60 * 10;</div> |
| <div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  <span class="comment"></span></div> |
| <div class="line"><a name="l00047"></a><span class="lineno"> 47</span> <span class="comment"> /// <summary>The cache itself </summary></span></div> |
| <div class="line"><a name="l00048"></a><span class="lineno"> 48</span> <span class="comment"></span> <span class="keyword">protected</span> <span class="keyword">internal</span> IDictionary<int, FilterItem> cache;<span class="comment"></span></div> |
| <div class="line"><a name="l00049"></a><span class="lineno"> 49</span> <span class="comment"> /// <summary>Maximum allowed cache size </summary></span></div> |
| <div class="line"><a name="l00050"></a><span class="lineno"> 50</span> <span class="comment"></span> <span class="keyword">protected</span> <span class="keyword">internal</span> <span class="keywordtype">int</span> cacheCleanSize;<span class="comment"></span></div> |
| <div class="line"><a name="l00051"></a><span class="lineno"> 51</span> <span class="comment"> /// <summary>Cache cleaning frequency </summary></span></div> |
| <div class="line"><a name="l00052"></a><span class="lineno"> 52</span> <span class="comment"></span> <span class="keyword">protected</span> <span class="keyword">internal</span> <span class="keywordtype">long</span> cleanSleepTime;<span class="comment"></span></div> |
| <div class="line"><a name="l00053"></a><span class="lineno"> 53</span> <span class="comment"> /// <summary>Cache cleaner that runs in a separate thread </summary></span></div> |
| <div class="line"><a name="l00054"></a><span class="lineno"> 54</span> <span class="comment"></span> <span class="keyword">protected</span> <span class="keyword">internal</span> FilterCleaner internalFilterCleaner;</div> |
| <div class="line"><a name="l00055"></a><span class="lineno"> 55</span> </div> |
| <div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  <span class="keyword">private</span> <span class="keyword">static</span> readonly <span class="keywordtype">object</span> _staticSyncObj = <span class="keyword">new</span> object();</div> |
| <div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  <span class="keyword">public</span> <span class="keyword">static</span> <a class="code" href="../../d8/d5c/class_lucene_1_1_net_1_1_search_1_1_filter_manager.html" title="Filter caching singleton. It can be used to save filters locally for reuse. This class makes it possb...">FilterManager</a> Instance</div> |
| <div class="line"><a name="l00058"></a><span class="lineno"><a class="code" href="../../d8/d5c/class_lucene_1_1_net_1_1_search_1_1_filter_manager.html#a07e89fa98a80276631fd94ef70109286"> 58</a></span>  {</div> |
| <div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  <span class="keyword">get</span></div> |
| <div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  {</div> |
| <div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  lock (_staticSyncObj)</div> |
| <div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  {</div> |
| <div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  <span class="keywordflow">return</span> manager ?? (manager = <span class="keyword">new</span> <a class="code" href="../../d8/d5c/class_lucene_1_1_net_1_1_search_1_1_filter_manager.html" title="Filter caching singleton. It can be used to save filters locally for reuse. This class makes it possb...">FilterManager</a>());</div> |
| <div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  }</div> |
| <div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  }</div> |
| <div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  }</div> |
| <div class="line"><a name="l00067"></a><span class="lineno"> 67</span> <span class="comment"></span></div> |
| <div class="line"><a name="l00068"></a><span class="lineno"> 68</span> <span class="comment"> /// <summary> Sets up the FilterManager singleton.</summary></span></div> |
| <div class="line"><a name="l00069"></a><span class="lineno"> 69</span> <span class="comment"></span> <span class="keyword">protected</span> <span class="keyword">internal</span> <a class="code" href="../../d8/d5c/class_lucene_1_1_net_1_1_search_1_1_filter_manager.html" title="Filter caching singleton. It can be used to save filters locally for reuse. This class makes it possb...">FilterManager</a>()</div> |
| <div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  {</div> |
| <div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  cache = <span class="keyword">new</span> HashMap<int, FilterItem>();</div> |
| <div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  cacheCleanSize = DEFAULT_CACHE_CLEAN_SIZE; <span class="comment">// Let the cache get to 100 items</span></div> |
| <div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  cleanSleepTime = DEFAULT_CACHE_SLEEP_TIME; <span class="comment">// 10 minutes between cleanings</span></div> |
| <div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  </div> |
| <div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  internalFilterCleaner = <span class="keyword">new</span> FilterCleaner(<span class="keyword">this</span>);</div> |
| <div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  <a class="code" href="../../d7/dfc/class_lucene_1_1_net_1_1_support_1_1_thread_class.html" title="Support class used to handle threads ">ThreadClass</a> fcThread = <span class="keyword">new</span> <a class="code" href="../../d7/dfc/class_lucene_1_1_net_1_1_support_1_1_thread_class.html" title="Support class used to handle threads ">ThreadClass</a>(<span class="keyword">new</span> System.Threading.ThreadStart(internalFilterCleaner.Run));</div> |
| <div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  <span class="comment">// setto be a Daemon so it doesn't have to be stopped</span></div> |
| <div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  fcThread.<a class="code" href="../../d7/dfc/class_lucene_1_1_net_1_1_support_1_1_thread_class.html#a29fad241d94795b9b5cc6f89ebb90fbf" title="Gets or sets a value indicating whether or not a thread is a background thread. ">IsBackground</a> = <span class="keyword">true</span>;</div> |
| <div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  fcThread.<a class="code" href="../../d7/dfc/class_lucene_1_1_net_1_1_support_1_1_thread_class.html#a49f536710bf6797e6e0d417b38e17f0c" title="Causes the operating system to change the state of the current thread instance to ThreadState...">Start</a>();</div> |
| <div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  }</div> |
| <div class="line"><a name="l00081"></a><span class="lineno"> 81</span> <span class="comment"></span></div> |
| <div class="line"><a name="l00082"></a><span class="lineno"> 82</span> <span class="comment"> /// <summary> Sets the max size that cache should reach before it is cleaned up</summary></span></div> |
| <div class="line"><a name="l00083"></a><span class="lineno"> 83</span> <span class="comment"> /// <param name="value"> maximum allowed cache size </param></span></div> |
| <div class="line"><a name="l00084"></a><span class="lineno"><a class="code" href="../../d8/d5c/class_lucene_1_1_net_1_1_search_1_1_filter_manager.html#a0837dbe7361a591158a4c8d930d00fcd"> 84</a></span> <span class="comment"></span> <span class="keyword">public</span> <span class="keyword">virtual</span> <span class="keywordtype">void</span> SetCacheSize(<span class="keywordtype">int</span> value)</div> |
| <div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  {</div> |
| <div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  this.cacheCleanSize = value;</div> |
| <div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  }</div> |
| <div class="line"><a name="l00088"></a><span class="lineno"> 88</span> <span class="comment"></span></div> |
| <div class="line"><a name="l00089"></a><span class="lineno"> 89</span> <span class="comment"> /// <summary> Sets the cache cleaning frequency in milliseconds.</summary></span></div> |
| <div class="line"><a name="l00090"></a><span class="lineno"> 90</span> <span class="comment"> /// <param name="value"> cleaning frequency in millioseconds </param></span></div> |
| <div class="line"><a name="l00091"></a><span class="lineno"><a class="code" href="../../d8/d5c/class_lucene_1_1_net_1_1_search_1_1_filter_manager.html#a2187c2bd54fd65a72e8f170ccbc4e8f0"> 91</a></span> <span class="comment"></span> <span class="keyword">public</span> <span class="keyword">virtual</span> <span class="keywordtype">void</span> SetCleanThreadSleepTime(<span class="keywordtype">long</span> value)</div> |
| <div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  {</div> |
| <div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  this.cleanSleepTime = value;</div> |
| <div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  }</div> |
| <div class="line"><a name="l00095"></a><span class="lineno"> 95</span> <span class="comment"></span></div> |
| <div class="line"><a name="l00096"></a><span class="lineno"> 96</span> <span class="comment"> /// <summary> Returns the cached version of the filter. Allows the caller to pass up</span></div> |
| <div class="line"><a name="l00097"></a><span class="lineno"> 97</span> <span class="comment"> /// a small filter but this will keep a persistent version around and allow</span></div> |
| <div class="line"><a name="l00098"></a><span class="lineno"> 98</span> <span class="comment"> /// the caching filter to do its job.</span></div> |
| <div class="line"><a name="l00099"></a><span class="lineno"> 99</span> <span class="comment"> /// </span></div> |
| <div class="line"><a name="l00100"></a><span class="lineno"> 100</span> <span class="comment"> /// </summary></span></div> |
| <div class="line"><a name="l00101"></a><span class="lineno"> 101</span> <span class="comment"> /// <param name="filter">The input filter</span></div> |
| <div class="line"><a name="l00102"></a><span class="lineno"> 102</span> <span class="comment"> /// </param></span></div> |
| <div class="line"><a name="l00103"></a><span class="lineno"> 103</span> <span class="comment"> /// <returns> The cached version of the filter</span></div> |
| <div class="line"><a name="l00104"></a><span class="lineno"> 104</span> <span class="comment"> /// </returns></span></div> |
| <div class="line"><a name="l00105"></a><span class="lineno"><a class="code" href="../../d8/d5c/class_lucene_1_1_net_1_1_search_1_1_filter_manager.html#a53dd4cffa72786bdaa574f03f9b9b767"> 105</a></span> <span class="comment"></span> <span class="keyword">public</span> <span class="keyword">virtual</span> <a class="code" href="../../d3/dc7/class_lucene_1_1_net_1_1_search_1_1_filter.html" title="Abstract base class for restricting which documents may be returned during searching.">Filter</a> GetFilter(<a class="code" href="../../d3/dc7/class_lucene_1_1_net_1_1_search_1_1_filter.html" title="Abstract base class for restricting which documents may be returned during searching.">Filter</a> filter)</div> |
| <div class="line"><a name="l00106"></a><span class="lineno"> 106</span>  {</div> |
| <div class="line"><a name="l00107"></a><span class="lineno"> 107</span>  lock (cache)</div> |
| <div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  {</div> |
| <div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  FilterItem fi = null;</div> |
| <div class="line"><a name="l00110"></a><span class="lineno"> 110</span>  fi = cache[filter.GetHashCode()];</div> |
| <div class="line"><a name="l00111"></a><span class="lineno"> 111</span>  <span class="keywordflow">if</span> (fi != null)</div> |
| <div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  {</div> |
| <div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  fi.timestamp = System.DateTime.UtcNow.Ticks;</div> |
| <div class="line"><a name="l00114"></a><span class="lineno"> 114</span>  <span class="keywordflow">return</span> fi.filter;</div> |
| <div class="line"><a name="l00115"></a><span class="lineno"> 115</span>  }</div> |
| <div class="line"><a name="l00116"></a><span class="lineno"> 116</span>  cache[filter.GetHashCode()] = <span class="keyword">new</span> FilterItem(filter);</div> |
| <div class="line"><a name="l00117"></a><span class="lineno"> 117</span>  <span class="keywordflow">return</span> filter;</div> |
| <div class="line"><a name="l00118"></a><span class="lineno"> 118</span>  }</div> |
| <div class="line"><a name="l00119"></a><span class="lineno"> 119</span>  }</div> |
| <div class="line"><a name="l00120"></a><span class="lineno"> 120</span>  <span class="comment"></span></div> |
| <div class="line"><a name="l00121"></a><span class="lineno"> 121</span> <span class="comment"> /// <summary> Holds the filter and the last time the filter was used, to make LRU-based</span></div> |
| <div class="line"><a name="l00122"></a><span class="lineno"> 122</span> <span class="comment"> /// cache cleaning possible.</span></div> |
| <div class="line"><a name="l00123"></a><span class="lineno"> 123</span> <span class="comment"> /// TODO: Clean this up when we switch to Java 1.5</span></div> |
| <div class="line"><a name="l00124"></a><span class="lineno"> 124</span> <span class="comment"> /// </summary></span></div> |
| <div class="line"><a name="l00125"></a><span class="lineno"> 125</span> <span class="comment"></span> <span class="keyword">protected</span> <span class="keyword">internal</span> <span class="keyword">class </span>FilterItem</div> |
| <div class="line"><a name="l00126"></a><span class="lineno"> 126</span>  {</div> |
| <div class="line"><a name="l00127"></a><span class="lineno"> 127</span>  <span class="keyword">public</span> <a class="code" href="../../d3/dc7/class_lucene_1_1_net_1_1_search_1_1_filter.html" title="Abstract base class for restricting which documents may be returned during searching.">Filter</a> filter;</div> |
| <div class="line"><a name="l00128"></a><span class="lineno"> 128</span>  <span class="keyword">public</span> <span class="keywordtype">long</span> timestamp;</div> |
| <div class="line"><a name="l00129"></a><span class="lineno"> 129</span>  </div> |
| <div class="line"><a name="l00130"></a><span class="lineno"> 130</span>  <span class="keyword">public</span> FilterItem(<a class="code" href="../../d3/dc7/class_lucene_1_1_net_1_1_search_1_1_filter.html" title="Abstract base class for restricting which documents may be returned during searching.">Filter</a> filter)</div> |
| <div class="line"><a name="l00131"></a><span class="lineno"> 131</span>  {</div> |
| <div class="line"><a name="l00132"></a><span class="lineno"> 132</span>  this.filter = filter;</div> |
| <div class="line"><a name="l00133"></a><span class="lineno"> 133</span>  this.timestamp = System.DateTime.UtcNow.Ticks;</div> |
| <div class="line"><a name="l00134"></a><span class="lineno"> 134</span>  }</div> |
| <div class="line"><a name="l00135"></a><span class="lineno"> 135</span>  }</div> |
| <div class="line"><a name="l00136"></a><span class="lineno"> 136</span>  </div> |
| <div class="line"><a name="l00137"></a><span class="lineno"> 137</span>  <span class="comment"></span></div> |
| <div class="line"><a name="l00138"></a><span class="lineno"> 138</span> <span class="comment"> /// <summary> Keeps the cache from getting too big.</span></div> |
| <div class="line"><a name="l00139"></a><span class="lineno"> 139</span> <span class="comment"> /// If we were using Java 1.5, we could use LinkedHashMap and we would not need this thread</span></div> |
| <div class="line"><a name="l00140"></a><span class="lineno"> 140</span> <span class="comment"> /// to clean out the cache.</span></div> |
| <div class="line"><a name="l00141"></a><span class="lineno"> 141</span> <span class="comment"> /// </span></div> |
| <div class="line"><a name="l00142"></a><span class="lineno"> 142</span> <span class="comment"> /// The SortedSet sortedFilterItems is used only to sort the items from the cache,</span></div> |
| <div class="line"><a name="l00143"></a><span class="lineno"> 143</span> <span class="comment"> /// so when it's time to clean up we have the TreeSet sort the FilterItems by</span></div> |
| <div class="line"><a name="l00144"></a><span class="lineno"> 144</span> <span class="comment"> /// timestamp.</span></div> |
| <div class="line"><a name="l00145"></a><span class="lineno"> 145</span> <span class="comment"> /// </span></div> |
| <div class="line"><a name="l00146"></a><span class="lineno"> 146</span> <span class="comment"> /// Removes 1.5 * the numbers of items to make the cache smaller.</span></div> |
| <div class="line"><a name="l00147"></a><span class="lineno"> 147</span> <span class="comment"> /// For example:</span></div> |
| <div class="line"><a name="l00148"></a><span class="lineno"> 148</span> <span class="comment"> /// If cache clean size is 10, and the cache is at 15, we would remove (15 - 10) * 1.5 = 7.5 round up to 8.</span></div> |
| <div class="line"><a name="l00149"></a><span class="lineno"> 149</span> <span class="comment"> /// This way we clean the cache a bit more, and avoid having the cache cleaner having to do it frequently.</span></div> |
| <div class="line"><a name="l00150"></a><span class="lineno"> 150</span> <span class="comment"> /// </summary></span></div> |
| <div class="line"><a name="l00151"></a><span class="lineno"> 151</span> <span class="comment"></span> <span class="keyword">protected</span> <span class="keyword">internal</span> <span class="keyword">class </span>FilterCleaner : <a class="code" href="../../dc/d17/interface_lucene_1_1_net_1_1_support_1_1_i_thread_runnable.html" title="This interface should be implemented by any class whose instances are intended to be executed by a th...">IThreadRunnable</a></div> |
| <div class="line"><a name="l00152"></a><span class="lineno"> 152</span>  {</div> |
| <div class="line"><a name="l00153"></a><span class="lineno"> 153</span>  <span class="keyword">private</span> <span class="keyword">class </span>FilterItemComparer : IComparer<KeyValuePair<int, FilterItem>></div> |
| <div class="line"><a name="l00154"></a><span class="lineno"> 154</span>  {</div> |
| <div class="line"><a name="l00155"></a><span class="lineno"> 155</span> <span class="preprocessor"> #region IComparer<FilterItem> Members</span></div> |
| <div class="line"><a name="l00156"></a><span class="lineno"> 156</span> <span class="preprocessor"></span></div> |
| <div class="line"><a name="l00157"></a><span class="lineno"> 157</span>  <span class="keyword">public</span> <span class="keywordtype">int</span> <a class="code" href="../../dc/d7f/class_lucene_1_1_net_1_1_support_1_1_compare.html" title="Summary description for TestSupportClass. ">Compare</a>(KeyValuePair<int, FilterItem> x, KeyValuePair<int, FilterItem> y)</div> |
| <div class="line"><a name="l00158"></a><span class="lineno"> 158</span>  {</div> |
| <div class="line"><a name="l00159"></a><span class="lineno"> 159</span>  <span class="keywordflow">return</span> x.Value.timestamp.CompareTo(y.Value.timestamp);</div> |
| <div class="line"><a name="l00160"></a><span class="lineno"> 160</span>  }</div> |
| <div class="line"><a name="l00161"></a><span class="lineno"> 161</span> </div> |
| <div class="line"><a name="l00162"></a><span class="lineno"> 162</span> <span class="preprocessor"> #endregion</span></div> |
| <div class="line"><a name="l00163"></a><span class="lineno"> 163</span> <span class="preprocessor"></span> }</div> |
| <div class="line"><a name="l00164"></a><span class="lineno"> 164</span>  </div> |
| <div class="line"><a name="l00165"></a><span class="lineno"> 165</span>  <span class="keyword">private</span> <span class="keywordtype">bool</span> running = <span class="keyword">true</span>;</div> |
| <div class="line"><a name="l00166"></a><span class="lineno"> 166</span>  <span class="keyword">private</span> FilterManager manager;</div> |
| <div class="line"><a name="l00167"></a><span class="lineno"> 167</span>  <span class="keyword">private</span> ISet<KeyValuePair<int, FilterItem>> sortedFilterItems;</div> |
| <div class="line"><a name="l00168"></a><span class="lineno"> 168</span>  </div> |
| <div class="line"><a name="l00169"></a><span class="lineno"> 169</span>  <span class="keyword">public</span> FilterCleaner(FilterManager enclosingInstance)</div> |
| <div class="line"><a name="l00170"></a><span class="lineno"> 170</span>  {</div> |
| <div class="line"><a name="l00171"></a><span class="lineno"> 171</span>  this.manager = enclosingInstance;</div> |
| <div class="line"><a name="l00172"></a><span class="lineno"> 172</span>  sortedFilterItems = <span class="keyword">new</span> SortedSet<KeyValuePair<int, FilterItem>>(<span class="keyword">new</span> FilterItemComparer());</div> |
| <div class="line"><a name="l00173"></a><span class="lineno"> 173</span>  }</div> |
| <div class="line"><a name="l00174"></a><span class="lineno"> 174</span>  </div> |
| <div class="line"><a name="l00175"></a><span class="lineno"> 175</span>  <span class="keyword">public</span> <span class="keyword">virtual</span> <span class="keywordtype">void</span> Run()</div> |
| <div class="line"><a name="l00176"></a><span class="lineno"> 176</span>  {</div> |
| <div class="line"><a name="l00177"></a><span class="lineno"> 177</span>  <span class="keywordflow">while</span> (running)</div> |
| <div class="line"><a name="l00178"></a><span class="lineno"> 178</span>  {</div> |
| <div class="line"><a name="l00179"></a><span class="lineno"> 179</span>  <span class="comment">// sort items from oldest to newest </span></div> |
| <div class="line"><a name="l00180"></a><span class="lineno"> 180</span>  <span class="comment">// we delete the oldest filters </span></div> |
| <div class="line"><a name="l00181"></a><span class="lineno"> 181</span>  <span class="keywordflow">if</span> (this.manager.cache.Count > <span class="keyword">this</span>.manager.cacheCleanSize)</div> |
| <div class="line"><a name="l00182"></a><span class="lineno"> 182</span>  {</div> |
| <div class="line"><a name="l00183"></a><span class="lineno"> 183</span>  <span class="comment">// empty the temporary set</span></div> |
| <div class="line"><a name="l00184"></a><span class="lineno"> 184</span>  sortedFilterItems.Clear();</div> |
| <div class="line"><a name="l00185"></a><span class="lineno"> 185</span>  lock (this.manager.cache)</div> |
| <div class="line"><a name="l00186"></a><span class="lineno"> 186</span>  {</div> |
| <div class="line"><a name="l00187"></a><span class="lineno"> 187</span>  sortedFilterItems.UnionWith(this.manager.cache);</div> |
| <div class="line"><a name="l00188"></a><span class="lineno"> 188</span>  <span class="keywordtype">int</span> numToDelete = (int)((this.manager.cache.Count - <span class="keyword">this</span>.manager.cacheCleanSize) * 1.5);</div> |
| <div class="line"><a name="l00189"></a><span class="lineno"> 189</span> </div> |
| <div class="line"><a name="l00190"></a><span class="lineno"> 190</span>  <span class="comment">//delete all of the cache entries not used in a while</span></div> |
| <div class="line"><a name="l00191"></a><span class="lineno"> 191</span>  sortedFilterItems.ExceptWith(sortedFilterItems.Take(numToDelete).ToArray());</div> |
| <div class="line"><a name="l00192"></a><span class="lineno"> 192</span>  }</div> |
| <div class="line"><a name="l00193"></a><span class="lineno"> 193</span>  <span class="comment">// empty the set so we don't tie up the memory</span></div> |
| <div class="line"><a name="l00194"></a><span class="lineno"> 194</span>  sortedFilterItems.Clear();</div> |
| <div class="line"><a name="l00195"></a><span class="lineno"> 195</span>  }</div> |
| <div class="line"><a name="l00196"></a><span class="lineno"> 196</span>  <span class="comment">// take a nap</span></div> |
| <div class="line"><a name="l00197"></a><span class="lineno"> 197</span>  System.Threading.Thread.Sleep(<span class="keyword">new</span> System.TimeSpan((System.Int64)10000 * <span class="keyword">this</span>.manager.cleanSleepTime));</div> |
| <div class="line"><a name="l00198"></a><span class="lineno"> 198</span>  </div> |
| <div class="line"><a name="l00199"></a><span class="lineno"> 199</span>  }</div> |
| <div class="line"><a name="l00200"></a><span class="lineno"> 200</span>  }</div> |
| <div class="line"><a name="l00201"></a><span class="lineno"> 201</span>  }</div> |
| <div class="line"><a name="l00202"></a><span class="lineno"> 202</span>  }</div> |
| <div class="line"><a name="l00203"></a><span class="lineno"> 203</span> }</div> |
| </div><!-- fragment --></div><!-- contents --> |
| <!-- start footer part --> |
| <hr class="footer"/><address class="footer"><small> |
| Generated on Thu Jan 3 2013 02:34:12 for Lucene.Net by  <a href="http://www.doxygen.org/index.html"> |
| <img class="footer" src="../../doxygen.png" alt="doxygen"/> |
| </a> 1.8.3 |
| </small></address> |
| </body> |
| </html> |