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| <div class="title">TeeSinkTokenFilter.cs</div> </div> |
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| <a href="../../d2/d25/_tee_sink_token_filter_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"><a class="code" href="../../d2/d25/_tee_sink_token_filter_8cs.html#a0c6c543e9e03ec9a8e489ea9e99694bf"> 20</a></span> <span class="keyword">using</span> <a class="code" href="../../d0/d0c/_single_token_token_stream_8cs.html#a0c6c543e9e03ec9a8e489ea9e99694bf">Attribute</a> = Lucene.Net.Util.Attribute;</div> |
| <div class="line"><a name="l00021"></a><span class="lineno"><a class="code" href="../../d2/d25/_tee_sink_token_filter_8cs.html#aed60c4e663aea1a7dec59cf4c3710058"> 21</a></span> <span class="keyword">using</span> <a class="code" href="../../dc/d11/_char_tokenizer_8cs.html#aed60c4e663aea1a7dec59cf4c3710058">AttributeSource</a> = Lucene.Net.Util.AttributeSource;</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.Analysis</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> This TokenFilter provides the ability to set aside attribute states</span></div> |
| <div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="comment"> /// that have already been analyzed. This is useful in situations where multiple fields share</span></div> |
| <div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="comment"> /// many common analysis steps and then go their separate ways.</span></div> |
| <div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="comment"> /// <p/></span></div> |
| <div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="comment"> /// It is also useful for doing things like entity extraction or proper noun analysis as</span></div> |
| <div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="comment"> /// part of the analysis workflow and saving off those tokens for use in another field.</span></div> |
| <div class="line"><a name="l00032"></a><span class="lineno"> 32</span> <span class="comment"> /// </span></div> |
| <div class="line"><a name="l00033"></a><span class="lineno"> 33</span> <span class="comment"> /// <code></span></div> |
| <div class="line"><a name="l00034"></a><span class="lineno"> 34</span> <span class="comment"> /// TeeSinkTokenFilter source1 = new TeeSinkTokenFilter(new WhitespaceTokenizer(reader1));</span></div> |
| <div class="line"><a name="l00035"></a><span class="lineno"> 35</span> <span class="comment"> /// TeeSinkTokenFilter.SinkTokenStream sink1 = source1.newSinkTokenStream();</span></div> |
| <div class="line"><a name="l00036"></a><span class="lineno"> 36</span> <span class="comment"> /// TeeSinkTokenFilter.SinkTokenStream sink2 = source1.newSinkTokenStream();</span></div> |
| <div class="line"><a name="l00037"></a><span class="lineno"> 37</span> <span class="comment"> /// TeeSinkTokenFilter source2 = new TeeSinkTokenFilter(new WhitespaceTokenizer(reader2));</span></div> |
| <div class="line"><a name="l00038"></a><span class="lineno"> 38</span> <span class="comment"> /// source2.addSinkTokenStream(sink1);</span></div> |
| <div class="line"><a name="l00039"></a><span class="lineno"> 39</span> <span class="comment"> /// source2.addSinkTokenStream(sink2);</span></div> |
| <div class="line"><a name="l00040"></a><span class="lineno"> 40</span> <span class="comment"> /// TokenStream final1 = new LowerCaseFilter(source1);</span></div> |
| <div class="line"><a name="l00041"></a><span class="lineno"> 41</span> <span class="comment"> /// TokenStream final2 = source2;</span></div> |
| <div class="line"><a name="l00042"></a><span class="lineno"> 42</span> <span class="comment"> /// TokenStream final3 = new EntityDetect(sink1);</span></div> |
| <div class="line"><a name="l00043"></a><span class="lineno"> 43</span> <span class="comment"> /// TokenStream final4 = new URLDetect(sink2);</span></div> |
| <div class="line"><a name="l00044"></a><span class="lineno"> 44</span> <span class="comment"> /// d.add(new Field("f1", final1));</span></div> |
| <div class="line"><a name="l00045"></a><span class="lineno"> 45</span> <span class="comment"> /// d.add(new Field("f2", final2));</span></div> |
| <div class="line"><a name="l00046"></a><span class="lineno"> 46</span> <span class="comment"> /// d.add(new Field("f3", final3));</span></div> |
| <div class="line"><a name="l00047"></a><span class="lineno"> 47</span> <span class="comment"> /// d.add(new Field("f4", final4));</span></div> |
| <div class="line"><a name="l00048"></a><span class="lineno"> 48</span> <span class="comment"> /// </code></span></div> |
| <div class="line"><a name="l00049"></a><span class="lineno"> 49</span> <span class="comment"> /// In this example, <c>sink1</c> and <c>sink2</c> will both get tokens from both</span></div> |
| <div class="line"><a name="l00050"></a><span class="lineno"> 50</span> <span class="comment"> /// <c>reader1</c> and <c>reader2</c> after whitespace tokenizer</span></div> |
| <div class="line"><a name="l00051"></a><span class="lineno"> 51</span> <span class="comment"> /// and now we can further wrap any of these in extra analysis, and more "sources" can be inserted if desired.</span></div> |
| <div class="line"><a name="l00052"></a><span class="lineno"> 52</span> <span class="comment"> /// It is important, that tees are consumed before sinks (in the above example, the field names must be</span></div> |
| <div class="line"><a name="l00053"></a><span class="lineno"> 53</span> <span class="comment"> /// less the sink's field names). If you are not sure, which stream is consumed first, you can simply</span></div> |
| <div class="line"><a name="l00054"></a><span class="lineno"> 54</span> <span class="comment"> /// add another sink and then pass all tokens to the sinks at once using <see cref="ConsumeAllTokens" />.</span></div> |
| <div class="line"><a name="l00055"></a><span class="lineno"> 55</span> <span class="comment"> /// This TokenFilter is exhausted after this. In the above example, change</span></div> |
| <div class="line"><a name="l00056"></a><span class="lineno"> 56</span> <span class="comment"> /// the example above to:</span></div> |
| <div class="line"><a name="l00057"></a><span class="lineno"> 57</span> <span class="comment"> /// <code></span></div> |
| <div class="line"><a name="l00058"></a><span class="lineno"> 58</span> <span class="comment"> /// ...</span></div> |
| <div class="line"><a name="l00059"></a><span class="lineno"> 59</span> <span class="comment"> /// TokenStream final1 = new LowerCaseFilter(source1.newSinkTokenStream());</span></div> |
| <div class="line"><a name="l00060"></a><span class="lineno"> 60</span> <span class="comment"> /// TokenStream final2 = source2.newSinkTokenStream();</span></div> |
| <div class="line"><a name="l00061"></a><span class="lineno"> 61</span> <span class="comment"> /// sink1.consumeAllTokens();</span></div> |
| <div class="line"><a name="l00062"></a><span class="lineno"> 62</span> <span class="comment"> /// sink2.consumeAllTokens();</span></div> |
| <div class="line"><a name="l00063"></a><span class="lineno"> 63</span> <span class="comment"> /// ...</span></div> |
| <div class="line"><a name="l00064"></a><span class="lineno"> 64</span> <span class="comment"> /// </code></span></div> |
| <div class="line"><a name="l00065"></a><span class="lineno"> 65</span> <span class="comment"> /// In this case, the fields can be added in any order, because the sources are not used anymore and all sinks are ready.</span></div> |
| <div class="line"><a name="l00066"></a><span class="lineno"> 66</span> <span class="comment"> /// <p/>Note, the EntityDetect and URLDetect TokenStreams are for the example and do not currently exist in Lucene.</span></div> |
| <div class="line"><a name="l00067"></a><span class="lineno"> 67</span> <span class="comment"> /// </summary></span></div> |
| <div class="line"><a name="l00068"></a><span class="lineno"><a class="code" href="../../d6/d92/class_lucene_1_1_net_1_1_analysis_1_1_tee_sink_token_filter.html"> 68</a></span> <span class="comment"></span> <span class="keyword">public</span> sealed <span class="keyword">class </span><a class="code" href="../../d6/d92/class_lucene_1_1_net_1_1_analysis_1_1_tee_sink_token_filter.html" title="This TokenFilter provides the ability to set aside attribute states that have already been analyzed...">TeeSinkTokenFilter</a>:<a class="code" href="../../d4/dcd/class_lucene_1_1_net_1_1_analysis_1_1_token_filter.html" title="A TokenFilter is a TokenStream whose input is another TokenStream. This is an abstract class; subclas...">TokenFilter</a></div> |
| <div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  {</div> |
| <div class="line"><a name="l00070"></a><span class="lineno"><a class="code" href="../../d4/d3f/class_lucene_1_1_net_1_1_analysis_1_1_tee_sink_token_filter_1_1_anonymous_class_sink_filter.html"> 70</a></span>  <span class="keyword">public</span> <span class="keyword">class </span><a class="code" href="../../d4/d3f/class_lucene_1_1_net_1_1_analysis_1_1_tee_sink_token_filter_1_1_anonymous_class_sink_filter.html">AnonymousClassSinkFilter</a>:<a class="code" href="../../db/d0c/class_lucene_1_1_net_1_1_analysis_1_1_tee_sink_token_filter_1_1_sink_filter.html" title="A filter that decides which AttributeSource states to store in the sink.">SinkFilter</a></div> |
| <div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  {</div> |
| <div class="line"><a name="l00072"></a><span class="lineno"><a class="code" href="../../d4/d3f/class_lucene_1_1_net_1_1_analysis_1_1_tee_sink_token_filter_1_1_anonymous_class_sink_filter.html#a7aafcf233d26d75f90cc5309ec2c2dd1"> 72</a></span>  <span class="keyword">public</span> <span class="keyword">override</span> <span class="keywordtype">bool</span> Accept(<a class="code" href="../../dc/d11/_char_tokenizer_8cs.html#aed60c4e663aea1a7dec59cf4c3710058">AttributeSource</a> source)</div> |
| <div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  {</div> |
| <div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div> |
| <div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  }</div> |
| <div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  }</div> |
| <div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  <span class="keyword">private</span> readonly LinkedList<WeakReference> sinks = <span class="keyword">new</span> LinkedList<WeakReference>();</div> |
| <div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  <span class="comment"></span></div> |
| <div class="line"><a name="l00079"></a><span class="lineno"> 79</span> <span class="comment"> /// <summary> Instantiates a new TeeSinkTokenFilter.</summary></span></div> |
| <div class="line"><a name="l00080"></a><span class="lineno"><a class="code" href="../../d6/d92/class_lucene_1_1_net_1_1_analysis_1_1_tee_sink_token_filter.html#a4f09b136cacc1774cbff21cf5bdc3b8a"> 80</a></span> <span class="comment"></span> <span class="keyword">public</span> <a class="code" href="../../d6/d92/class_lucene_1_1_net_1_1_analysis_1_1_tee_sink_token_filter.html" title="This TokenFilter provides the ability to set aside attribute states that have already been analyzed...">TeeSinkTokenFilter</a>(<a class="code" href="../../dd/d3d/class_lucene_1_1_net_1_1_analysis_1_1_token_stream.html" title="A TokenStream enumerates the sequence of tokens, either from Fields of a Document or from query text...">TokenStream</a> input):base(input)</div> |
| <div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  {</div> |
| <div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  }</div> |
| <div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  <span class="comment"></span></div> |
| <div class="line"><a name="l00084"></a><span class="lineno"> 84</span> <span class="comment"> /// <summary> Returns a new <see cref="SinkTokenStream" /> that receives all tokens consumed by this stream.</summary></span></div> |
| <div class="line"><a name="l00085"></a><span class="lineno"><a class="code" href="../../d6/d92/class_lucene_1_1_net_1_1_analysis_1_1_tee_sink_token_filter.html#a1e9e6329fe6c5227de082c2b0501691d"> 85</a></span> <span class="comment"></span> <span class="keyword">public</span> <a class="code" href="../../d8/d54/class_lucene_1_1_net_1_1_analysis_1_1_tee_sink_token_filter_1_1_sink_token_stream.html">SinkTokenStream</a> NewSinkTokenStream()</div> |
| <div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  {</div> |
| <div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  <span class="keywordflow">return</span> NewSinkTokenStream(ACCEPT_ALL_FILTER);</div> |
| <div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  }</div> |
| <div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  <span class="comment"></span></div> |
| <div class="line"><a name="l00090"></a><span class="lineno"> 90</span> <span class="comment"> /// <summary> Returns a new <see cref="SinkTokenStream" /> that receives all tokens consumed by this stream</span></div> |
| <div class="line"><a name="l00091"></a><span class="lineno"> 91</span> <span class="comment"> /// that pass the supplied filter.</span></div> |
| <div class="line"><a name="l00092"></a><span class="lineno"> 92</span> <span class="comment"> /// </summary></span></div> |
| <div class="line"><a name="l00093"></a><span class="lineno"> 93</span> <span class="comment"> /// <seealso cref="SinkFilter"></span></div> |
| <div class="line"><a name="l00094"></a><span class="lineno"> 94</span> <span class="comment"> /// </seealso></span></div> |
| <div class="line"><a name="l00095"></a><span class="lineno"><a class="code" href="../../d6/d92/class_lucene_1_1_net_1_1_analysis_1_1_tee_sink_token_filter.html#a7253ed4227a11def83dc815616a2574a"> 95</a></span> <span class="comment"></span> <span class="keyword">public</span> <a class="code" href="../../d8/d54/class_lucene_1_1_net_1_1_analysis_1_1_tee_sink_token_filter_1_1_sink_token_stream.html">SinkTokenStream</a> NewSinkTokenStream(<a class="code" href="../../db/d0c/class_lucene_1_1_net_1_1_analysis_1_1_tee_sink_token_filter_1_1_sink_filter.html" title="A filter that decides which AttributeSource states to store in the sink.">SinkFilter</a> filter)</div> |
| <div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  {</div> |
| <div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  var sink = <span class="keyword">new</span> <a class="code" href="../../d8/d54/class_lucene_1_1_net_1_1_analysis_1_1_tee_sink_token_filter_1_1_sink_token_stream.html">SinkTokenStream</a>(this.CloneAttributes(), filter);</div> |
| <div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  sinks.AddLast(<span class="keyword">new</span> WeakReference(sink));</div> |
| <div class="line"><a name="l00099"></a><span class="lineno"> 99</span>  <span class="keywordflow">return</span> sink;</div> |
| <div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  }</div> |
| <div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  <span class="comment"></span></div> |
| <div class="line"><a name="l00102"></a><span class="lineno"> 102</span> <span class="comment"> /// <summary> Adds a <see cref="SinkTokenStream" /> created by another <c>TeeSinkTokenFilter</c></span></div> |
| <div class="line"><a name="l00103"></a><span class="lineno"> 103</span> <span class="comment"> /// to this one. The supplied stream will also receive all consumed tokens.</span></div> |
| <div class="line"><a name="l00104"></a><span class="lineno"> 104</span> <span class="comment"> /// This method can be used to pass tokens from two different tees to one sink.</span></div> |
| <div class="line"><a name="l00105"></a><span class="lineno"> 105</span> <span class="comment"> /// </summary></span></div> |
| <div class="line"><a name="l00106"></a><span class="lineno"><a class="code" href="../../d6/d92/class_lucene_1_1_net_1_1_analysis_1_1_tee_sink_token_filter.html#a0517536815a6592296082af6b42b677a"> 106</a></span> <span class="comment"></span> <span class="keyword">public</span> <span class="keywordtype">void</span> AddSinkTokenStream(<a class="code" href="../../d8/d54/class_lucene_1_1_net_1_1_analysis_1_1_tee_sink_token_filter_1_1_sink_token_stream.html">SinkTokenStream</a> sink)</div> |
| <div class="line"><a name="l00107"></a><span class="lineno"> 107</span>  {</div> |
| <div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  <span class="comment">// check that sink has correct factory</span></div> |
| <div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  <span class="keywordflow">if</span> (!this.Factory.Equals(sink.<a class="code" href="../../d9/de7/class_lucene_1_1_net_1_1_util_1_1_attribute_source.html#a2d4a930c02c088e18b14c25e94f5089b" title="Returns the used AttributeFactory.">Factory</a>))</div> |
| <div class="line"><a name="l00110"></a><span class="lineno"> 110</span>  {</div> |
| <div class="line"><a name="l00111"></a><span class="lineno"> 111</span>  <span class="keywordflow">throw</span> <span class="keyword">new</span> System.ArgumentException(<span class="stringliteral">"The supplied sink is not compatible to this tee"</span>);</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>  <span class="comment">// add eventually missing attribute impls to the existing sink</span></div> |
| <div class="line"><a name="l00114"></a><span class="lineno"> 114</span>  <span class="keywordflow">foreach</span> (var impl <span class="keywordflow">in</span> this.CloneAttributes().GetAttributeImplsIterator())</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>  sink.AddAttributeImpl(impl);</div> |
| <div class="line"><a name="l00117"></a><span class="lineno"> 117</span>  }</div> |
| <div class="line"><a name="l00118"></a><span class="lineno"> 118</span>  sinks.AddLast(<span class="keyword">new</span> WeakReference(sink));</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> <c>TeeSinkTokenFilter</c> passes all tokens to the added sinks</span></div> |
| <div class="line"><a name="l00122"></a><span class="lineno"> 122</span> <span class="comment"> /// when itself is consumed. To be sure, that all tokens from the input</span></div> |
| <div class="line"><a name="l00123"></a><span class="lineno"> 123</span> <span class="comment"> /// stream are passed to the sinks, you can call this methods.</span></div> |
| <div class="line"><a name="l00124"></a><span class="lineno"> 124</span> <span class="comment"> /// This instance is exhausted after this, but all sinks are instant available.</span></div> |
| <div class="line"><a name="l00125"></a><span class="lineno"> 125</span> <span class="comment"> /// </summary></span></div> |
| <div class="line"><a name="l00126"></a><span class="lineno"><a class="code" href="../../d6/d92/class_lucene_1_1_net_1_1_analysis_1_1_tee_sink_token_filter.html#a54437f7b825fb972311e3d8603090171"> 126</a></span> <span class="comment"></span> <span class="keyword">public</span> <span class="keywordtype">void</span> ConsumeAllTokens()</div> |
| <div class="line"><a name="l00127"></a><span class="lineno"> 127</span>  {</div> |
| <div class="line"><a name="l00128"></a><span class="lineno"> 128</span>  <span class="keywordflow">while</span> (IncrementToken())</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>  }</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>  </div> |
| <div class="line"><a name="l00133"></a><span class="lineno"><a class="code" href="../../d6/d92/class_lucene_1_1_net_1_1_analysis_1_1_tee_sink_token_filter.html#a4bb4526dc3bb7c6902cc8be2b4d9d2df"> 133</a></span>  <span class="keyword">public</span> <span class="keyword">override</span> <span class="keywordtype">bool</span> IncrementToken()</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>  <span class="keywordflow">if</span> (input.IncrementToken())</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">// capture state lazily - maybe no SinkFilter accepts this state</span></div> |
| <div class="line"><a name="l00138"></a><span class="lineno"> 138</span>  <a class="code" href="../../d7/d33/class_lucene_1_1_net_1_1_util_1_1_attribute_source_1_1_state.html" title="This class holds the state of an AttributeSource.">State</a> state = null;</div> |
| <div class="line"><a name="l00139"></a><span class="lineno"> 139</span>  <span class="keywordflow">foreach</span>(WeakReference wr <span class="keywordflow">in</span> sinks)</div> |
| <div class="line"><a name="l00140"></a><span class="lineno"> 140</span>  {</div> |
| <div class="line"><a name="l00141"></a><span class="lineno"> 141</span>  var sink = (<a class="code" href="../../d8/d54/class_lucene_1_1_net_1_1_analysis_1_1_tee_sink_token_filter_1_1_sink_token_stream.html">SinkTokenStream</a>)wr.Target;</div> |
| <div class="line"><a name="l00142"></a><span class="lineno"> 142</span>  if (sink != null)</div> |
| <div class="line"><a name="l00143"></a><span class="lineno"> 143</span>  {</div> |
| <div class="line"><a name="l00144"></a><span class="lineno"> 144</span>  <span class="keywordflow">if</span> (sink.Accept(<span class="keyword">this</span>))</div> |
| <div class="line"><a name="l00145"></a><span class="lineno"> 145</span>  {</div> |
| <div class="line"><a name="l00146"></a><span class="lineno"> 146</span>  <span class="keywordflow">if</span> (state == null)</div> |
| <div class="line"><a name="l00147"></a><span class="lineno"> 147</span>  {</div> |
| <div class="line"><a name="l00148"></a><span class="lineno"> 148</span>  state = this.CaptureState();</div> |
| <div class="line"><a name="l00149"></a><span class="lineno"> 149</span>  }</div> |
| <div class="line"><a name="l00150"></a><span class="lineno"> 150</span>  sink.AddState(state);</div> |
| <div class="line"><a name="l00151"></a><span class="lineno"> 151</span>  }</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>  }</div> |
| <div class="line"><a name="l00154"></a><span class="lineno"> 154</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div> |
| <div class="line"><a name="l00155"></a><span class="lineno"> 155</span>  }</div> |
| <div class="line"><a name="l00156"></a><span class="lineno"> 156</span>  </div> |
| <div class="line"><a name="l00157"></a><span class="lineno"> 157</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</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>  </div> |
| <div class="line"><a name="l00160"></a><span class="lineno"><a class="code" href="../../d6/d92/class_lucene_1_1_net_1_1_analysis_1_1_tee_sink_token_filter.html#a93c585bc4703e295000185d6d792ef0e"> 160</a></span>  <span class="keyword">public</span> <span class="keyword">override</span> <span class="keywordtype">void</span> End()</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>  base.End();</div> |
| <div class="line"><a name="l00163"></a><span class="lineno"> 163</span>  <a class="code" href="../../d7/d33/class_lucene_1_1_net_1_1_util_1_1_attribute_source_1_1_state.html" title="This class holds the state of an AttributeSource.">State</a> finalState = CaptureState();</div> |
| <div class="line"><a name="l00164"></a><span class="lineno"> 164</span>  <span class="keywordflow">foreach</span>(WeakReference wr <span class="keywordflow">in</span> sinks)</div> |
| <div class="line"><a name="l00165"></a><span class="lineno"> 165</span>  {</div> |
| <div class="line"><a name="l00166"></a><span class="lineno"> 166</span>  var sink = (<a class="code" href="../../d8/d54/class_lucene_1_1_net_1_1_analysis_1_1_tee_sink_token_filter_1_1_sink_token_stream.html">SinkTokenStream</a>)wr.Target;</div> |
| <div class="line"><a name="l00167"></a><span class="lineno"> 167</span>  if (sink != null)</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>  sink.SetFinalState(finalState);</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>  }</div> |
| <div class="line"><a name="l00172"></a><span class="lineno"> 172</span>  }</div> |
| <div class="line"><a name="l00173"></a><span class="lineno"> 173</span>  <span class="comment"></span></div> |
| <div class="line"><a name="l00174"></a><span class="lineno"> 174</span> <span class="comment"> /// <summary> A filter that decides which <see cref="AttributeSource" /> states to store in the sink.</summary></span></div> |
| <div class="line"><a name="l00175"></a><span class="lineno"><a class="code" href="../../db/d0c/class_lucene_1_1_net_1_1_analysis_1_1_tee_sink_token_filter_1_1_sink_filter.html"> 175</a></span> <span class="comment"></span> <span class="keyword">public</span> <span class="keyword">abstract</span> <span class="keyword">class </span><a class="code" href="../../db/d0c/class_lucene_1_1_net_1_1_analysis_1_1_tee_sink_token_filter_1_1_sink_filter.html" title="A filter that decides which AttributeSource states to store in the sink.">SinkFilter</a></div> |
| <div class="line"><a name="l00176"></a><span class="lineno"> 176</span>  {<span class="comment"></span></div> |
| <div class="line"><a name="l00177"></a><span class="lineno"> 177</span> <span class="comment"> /// <summary> Returns true, iff the current state of the passed-in <see cref="AttributeSource" /> shall be stored</span></div> |
| <div class="line"><a name="l00178"></a><span class="lineno"> 178</span> <span class="comment"> /// in the sink. </span></div> |
| <div class="line"><a name="l00179"></a><span class="lineno"> 179</span> <span class="comment"> /// </summary></span></div> |
| <div class="line"><a name="l00180"></a><span class="lineno"> 180</span> <span class="comment"></span> <span class="keyword">public</span> <span class="keyword">abstract</span> <span class="keywordtype">bool</span> Accept(<a class="code" href="../../dc/d11/_char_tokenizer_8cs.html#aed60c4e663aea1a7dec59cf4c3710058">AttributeSource</a> source);</div> |
| <div class="line"><a name="l00181"></a><span class="lineno"> 181</span>  <span class="comment"></span></div> |
| <div class="line"><a name="l00182"></a><span class="lineno"> 182</span> <span class="comment"> /// <summary> Called by <see cref="SinkTokenStream.Reset()" />. This method does nothing by default</span></div> |
| <div class="line"><a name="l00183"></a><span class="lineno"> 183</span> <span class="comment"> /// and can optionally be overridden.</span></div> |
| <div class="line"><a name="l00184"></a><span class="lineno"> 184</span> <span class="comment"> /// </summary></span></div> |
| <div class="line"><a name="l00185"></a><span class="lineno"><a class="code" href="../../db/d0c/class_lucene_1_1_net_1_1_analysis_1_1_tee_sink_token_filter_1_1_sink_filter.html#af78faded9b33074c0eb62d812d97ef0d"> 185</a></span> <span class="comment"></span> <span class="keyword">public</span> <span class="keyword">virtual</span> <span class="keywordtype">void</span> Reset()</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>  <span class="comment">// nothing to do; can be overridden</span></div> |
| <div class="line"><a name="l00188"></a><span class="lineno"> 188</span>  }</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>  </div> |
| <div class="line"><a name="l00191"></a><span class="lineno"><a class="code" href="../../d8/d54/class_lucene_1_1_net_1_1_analysis_1_1_tee_sink_token_filter_1_1_sink_token_stream.html"> 191</a></span>  <span class="keyword">public</span> sealed <span class="keyword">class </span><a class="code" href="../../d8/d54/class_lucene_1_1_net_1_1_analysis_1_1_tee_sink_token_filter_1_1_sink_token_stream.html">SinkTokenStream</a> : <a class="code" href="../../dd/d3d/class_lucene_1_1_net_1_1_analysis_1_1_token_stream.html" title="A TokenStream enumerates the sequence of tokens, either from Fields of a Document or from query text...">TokenStream</a></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="keyword">private</span> readonly LinkedList<State> cachedStates = <span class="keyword">new</span> LinkedList<State>();</div> |
| <div class="line"><a name="l00194"></a><span class="lineno"> 194</span>  <span class="keyword">private</span> <a class="code" href="../../d7/d33/class_lucene_1_1_net_1_1_util_1_1_attribute_source_1_1_state.html" title="This class holds the state of an AttributeSource.">State</a> finalState;</div> |
| <div class="line"><a name="l00195"></a><span class="lineno"> 195</span>  <span class="keyword">private</span> IEnumerator<<a class="code" href="../../dc/d11/_char_tokenizer_8cs.html#aed60c4e663aea1a7dec59cf4c3710058">AttributeSource</a>.State> it = null;</div> |
| <div class="line"><a name="l00196"></a><span class="lineno"> 196</span>  <span class="keyword">private</span> readonly <a class="code" href="../../db/d0c/class_lucene_1_1_net_1_1_analysis_1_1_tee_sink_token_filter_1_1_sink_filter.html" title="A filter that decides which AttributeSource states to store in the sink.">SinkFilter</a> filter;</div> |
| <div class="line"><a name="l00197"></a><span class="lineno"> 197</span> </div> |
| <div class="line"><a name="l00198"></a><span class="lineno"> 198</span>  <span class="keyword">internal</span> <a class="code" href="../../d8/d54/class_lucene_1_1_net_1_1_analysis_1_1_tee_sink_token_filter_1_1_sink_token_stream.html">SinkTokenStream</a>(<a class="code" href="../../dc/d11/_char_tokenizer_8cs.html#aed60c4e663aea1a7dec59cf4c3710058">AttributeSource</a> source, <a class="code" href="../../db/d0c/class_lucene_1_1_net_1_1_analysis_1_1_tee_sink_token_filter_1_1_sink_filter.html" title="A filter that decides which AttributeSource states to store in the sink.">SinkFilter</a> filter)</div> |
| <div class="line"><a name="l00199"></a><span class="lineno"> 199</span>  : base(source)</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>  this.filter = filter;</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 class="line"><a name="l00204"></a><span class="lineno"> 204</span>  <span class="keyword">internal</span> <span class="comment">/*private*/</span> <span class="keywordtype">bool</span> Accept(<a class="code" href="../../dc/d11/_char_tokenizer_8cs.html#aed60c4e663aea1a7dec59cf4c3710058">AttributeSource</a> source)</div> |
| <div class="line"><a name="l00205"></a><span class="lineno"> 205</span>  {</div> |
| <div class="line"><a name="l00206"></a><span class="lineno"> 206</span>  <span class="keywordflow">return</span> filter.<a class="code" href="../../db/d0c/class_lucene_1_1_net_1_1_analysis_1_1_tee_sink_token_filter_1_1_sink_filter.html#a21f04ce740eff6b9161fdecc63526bd8" title="Returns true, iff the current state of the passed-in AttributeSource shall be stored in the sink...">Accept</a>(source);</div> |
| <div class="line"><a name="l00207"></a><span class="lineno"> 207</span>  }</div> |
| <div class="line"><a name="l00208"></a><span class="lineno"> 208</span>  </div> |
| <div class="line"><a name="l00209"></a><span class="lineno"> 209</span>  <span class="keyword">internal</span> <span class="comment">/*private*/</span> <span class="keywordtype">void</span> AddState(<a class="code" href="../../dc/d11/_char_tokenizer_8cs.html#aed60c4e663aea1a7dec59cf4c3710058">AttributeSource</a>.State state)</div> |
| <div class="line"><a name="l00210"></a><span class="lineno"> 210</span>  {</div> |
| <div class="line"><a name="l00211"></a><span class="lineno"> 211</span>  <span class="keywordflow">if</span> (it != null)</div> |
| <div class="line"><a name="l00212"></a><span class="lineno"> 212</span>  {</div> |
| <div class="line"><a name="l00213"></a><span class="lineno"> 213</span>  <span class="keywordflow">throw</span> <span class="keyword">new</span> System.SystemException(<span class="stringliteral">"The tee must be consumed before sinks are consumed."</span>);</div> |
| <div class="line"><a name="l00214"></a><span class="lineno"> 214</span>  }</div> |
| <div class="line"><a name="l00215"></a><span class="lineno"> 215</span>  cachedStates.AddLast(state);</div> |
| <div class="line"><a name="l00216"></a><span class="lineno"> 216</span>  }</div> |
| <div class="line"><a name="l00217"></a><span class="lineno"> 217</span>  </div> |
| <div class="line"><a name="l00218"></a><span class="lineno"> 218</span>  <span class="keyword">internal</span> <span class="comment">/*private*/</span> <span class="keywordtype">void</span> SetFinalState(<a class="code" href="../../dc/d11/_char_tokenizer_8cs.html#aed60c4e663aea1a7dec59cf4c3710058">AttributeSource</a>.State finalState)</div> |
| <div class="line"><a name="l00219"></a><span class="lineno"> 219</span>  {</div> |
| <div class="line"><a name="l00220"></a><span class="lineno"> 220</span>  this.finalState = finalState;</div> |
| <div class="line"><a name="l00221"></a><span class="lineno"> 221</span>  }</div> |
| <div class="line"><a name="l00222"></a><span class="lineno"> 222</span>  </div> |
| <div class="line"><a name="l00223"></a><span class="lineno"><a class="code" href="../../d8/d54/class_lucene_1_1_net_1_1_analysis_1_1_tee_sink_token_filter_1_1_sink_token_stream.html#a4517abe609b364ecdf197202c6a8e620"> 223</a></span>  <span class="keyword">public</span> <span class="keyword">override</span> <span class="keywordtype">bool</span> IncrementToken()</div> |
| <div class="line"><a name="l00224"></a><span class="lineno"> 224</span>  {</div> |
| <div class="line"><a name="l00225"></a><span class="lineno"> 225</span>  <span class="comment">// lazy init the iterator</span></div> |
| <div class="line"><a name="l00226"></a><span class="lineno"> 226</span>  <span class="keywordflow">if</span> (it == null)</div> |
| <div class="line"><a name="l00227"></a><span class="lineno"> 227</span>  {</div> |
| <div class="line"><a name="l00228"></a><span class="lineno"> 228</span>  it = cachedStates.GetEnumerator();</div> |
| <div class="line"><a name="l00229"></a><span class="lineno"> 229</span>  }</div> |
| <div class="line"><a name="l00230"></a><span class="lineno"> 230</span>  </div> |
| <div class="line"><a name="l00231"></a><span class="lineno"> 231</span>  <span class="keywordflow">if</span> (!it.MoveNext())</div> |
| <div class="line"><a name="l00232"></a><span class="lineno"> 232</span>  {</div> |
| <div class="line"><a name="l00233"></a><span class="lineno"> 233</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div> |
| <div class="line"><a name="l00234"></a><span class="lineno"> 234</span>  }</div> |
| <div class="line"><a name="l00235"></a><span class="lineno"> 235</span>  </div> |
| <div class="line"><a name="l00236"></a><span class="lineno"> 236</span>  <a class="code" href="../../d7/d33/class_lucene_1_1_net_1_1_util_1_1_attribute_source_1_1_state.html" title="This class holds the state of an AttributeSource.">State</a> state = it.Current;</div> |
| <div class="line"><a name="l00237"></a><span class="lineno"> 237</span>  RestoreState(state);</div> |
| <div class="line"><a name="l00238"></a><span class="lineno"> 238</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div> |
| <div class="line"><a name="l00239"></a><span class="lineno"> 239</span>  }</div> |
| <div class="line"><a name="l00240"></a><span class="lineno"> 240</span>  </div> |
| <div class="line"><a name="l00241"></a><span class="lineno"><a class="code" href="../../d8/d54/class_lucene_1_1_net_1_1_analysis_1_1_tee_sink_token_filter_1_1_sink_token_stream.html#abfd9a84d4312d27bcae57443084c85d6"> 241</a></span>  <span class="keyword">public</span> <span class="keyword">override</span> <span class="keywordtype">void</span> End()</div> |
| <div class="line"><a name="l00242"></a><span class="lineno"> 242</span>  {</div> |
| <div class="line"><a name="l00243"></a><span class="lineno"> 243</span>  <span class="keywordflow">if</span> (finalState != null)</div> |
| <div class="line"><a name="l00244"></a><span class="lineno"> 244</span>  {</div> |
| <div class="line"><a name="l00245"></a><span class="lineno"> 245</span>  RestoreState(finalState);</div> |
| <div class="line"><a name="l00246"></a><span class="lineno"> 246</span>  }</div> |
| <div class="line"><a name="l00247"></a><span class="lineno"> 247</span>  }</div> |
| <div class="line"><a name="l00248"></a><span class="lineno"> 248</span>  </div> |
| <div class="line"><a name="l00249"></a><span class="lineno"><a class="code" href="../../d8/d54/class_lucene_1_1_net_1_1_analysis_1_1_tee_sink_token_filter_1_1_sink_token_stream.html#a9065b9e053e4173cf8d25e2a67e98684"> 249</a></span>  <span class="keyword">public</span> <span class="keyword">override</span> <span class="keywordtype">void</span> Reset()</div> |
| <div class="line"><a name="l00250"></a><span class="lineno"> 250</span>  {</div> |
| <div class="line"><a name="l00251"></a><span class="lineno"> 251</span>  it = cachedStates.GetEnumerator();</div> |
| <div class="line"><a name="l00252"></a><span class="lineno"> 252</span>  }</div> |
| <div class="line"><a name="l00253"></a><span class="lineno"> 253</span> </div> |
| <div class="line"><a name="l00254"></a><span class="lineno"><a class="code" href="../../d8/d54/class_lucene_1_1_net_1_1_analysis_1_1_tee_sink_token_filter_1_1_sink_token_stream.html#ac608e11e13d757951a060432e490d7d6"> 254</a></span>  <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="l00255"></a><span class="lineno"> 255</span>  {</div> |
| <div class="line"><a name="l00256"></a><span class="lineno"> 256</span>  <span class="comment">// Do nothing.</span></div> |
| <div class="line"><a name="l00257"></a><span class="lineno"> 257</span>  }</div> |
| <div class="line"><a name="l00258"></a><span class="lineno"> 258</span>  }</div> |
| <div class="line"><a name="l00259"></a><span class="lineno"> 259</span>  </div> |
| <div class="line"><a name="l00260"></a><span class="lineno"> 260</span>  <span class="keyword">private</span> <span class="keyword">static</span> readonly SinkFilter ACCEPT_ALL_FILTER;</div> |
| <div class="line"><a name="l00261"></a><span class="lineno"> 261</span>  <span class="keyword">static</span> <a class="code" href="../../d6/d92/class_lucene_1_1_net_1_1_analysis_1_1_tee_sink_token_filter.html" title="This TokenFilter provides the ability to set aside attribute states that have already been analyzed...">TeeSinkTokenFilter</a>()</div> |
| <div class="line"><a name="l00262"></a><span class="lineno"> 262</span>  {</div> |
| <div class="line"><a name="l00263"></a><span class="lineno"> 263</span>  ACCEPT_ALL_FILTER = <span class="keyword">new</span> AnonymousClassSinkFilter();</div> |
| <div class="line"><a name="l00264"></a><span class="lineno"> 264</span>  }</div> |
| <div class="line"><a name="l00265"></a><span class="lineno"> 265</span>  }</div> |
| <div class="line"><a name="l00266"></a><span class="lineno"> 266</span> }</div> |
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