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| <h1 id="Lucene_Net_Codecs_Memory_DirectPostingsFormat" data-uid="Lucene.Net.Codecs.Memory.DirectPostingsFormat" class="text-break">Class DirectPostingsFormat |
| </h1> |
| <div class="markdown level0 summary"><p>Wraps <span class="xref">Lucene.Net.Codecs.Lucene41.Lucene41PostingsFormat</span> format for on-disk |
| storage, but then at read time loads and stores all |
| terms & postings directly in RAM as byte[], int[].</p> |
| <p><p><strong>WARNING</strong>: This is |
| exceptionally RAM intensive: it makes no effort to |
| compress the postings data, storing terms as separate |
| byte[] and postings as separate int[], but as a result it |
| gives substantial increase in search performance.</p> |
| <p> |
| <p>This postings format supports <span class="xref">Lucene.Net.Index.TermsEnum.Ord</span> |
| and <span class="xref">Lucene.Net.Index.TermsEnum.SeekExact(System.Int64)</span>.</p> |
| <p> |
| <p>Because this holds all term bytes as a single |
| byte[], you cannot have more than 2.1GB worth of term |
| bytes in a single segment. |
| </p></p> |
| <div class="lucene-block lucene-experimental">This is a Lucene.NET EXPERIMENTAL API, use at your own risk</div><p> |
| </div> |
| <div class="markdown level0 conceptual"></div> |
| <div class="inheritance"> |
| <h5>Inheritance</h5> |
| <div class="level0"><span class="xref">System.Object</span></div> |
| <div class="level1"><span class="xref">Lucene.Net.Codecs.PostingsFormat</span></div> |
| <div class="level2"><span class="xref">DirectPostingsFormat</span></div> |
| </div> |
| <div class="inheritedMembers"> |
| <h5>Inherited Members</h5> |
| <div> |
| <span class="xref">Lucene.Net.Codecs.PostingsFormat.EMPTY</span> |
| </div> |
| <div> |
| <span class="xref">Lucene.Net.Codecs.PostingsFormat.SetPostingsFormatFactory(Lucene.Net.Codecs.IPostingsFormatFactory)</span> |
| </div> |
| <div> |
| <span class="xref">Lucene.Net.Codecs.PostingsFormat.GetPostingsFormatFactory()</span> |
| </div> |
| <div> |
| <span class="xref">Lucene.Net.Codecs.PostingsFormat.Name</span> |
| </div> |
| <div> |
| <span class="xref">Lucene.Net.Codecs.PostingsFormat.ToString()</span> |
| </div> |
| <div> |
| <span class="xref">Lucene.Net.Codecs.PostingsFormat.ForName(System.String)</span> |
| </div> |
| <div> |
| <span class="xref">Lucene.Net.Codecs.PostingsFormat.AvailablePostingsFormats</span> |
| </div> |
| <div> |
| <span class="xref">System.Object.Equals(System.Object)</span> |
| </div> |
| <div> |
| <span class="xref">System.Object.Equals(System.Object, System.Object)</span> |
| </div> |
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| </div> |
| <div> |
| <span class="xref">System.Object.ReferenceEquals(System.Object, System.Object)</span> |
| </div> |
| </div> |
| <h6><strong>Namespace</strong>: <a class="xref" href="Lucene.Net.Codecs.Memory.html">Lucene.Net.Codecs.Memory</a></h6> |
| <h6><strong>Assembly</strong>: Lucene.Net.Codecs.dll</h6> |
| <h5 id="Lucene_Net_Codecs_Memory_DirectPostingsFormat_syntax">Syntax</h5> |
| <div class="codewrapper"> |
| <pre><code class="lang-csharp hljs">[PostingsFormatName("Direct")] |
| public sealed class DirectPostingsFormat : PostingsFormat</code></pre> |
| </div> |
| <h3 id="constructors">Constructors |
| </h3> |
| <span class="small pull-right mobile-hide"> |
| <span class="divider">|</span> |
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| </span> |
| <span class="small pull-right mobile-hide"> |
| <a href="https://github.com/NightOwl888/lucenenet/blob/release/Lucene.Net_4_8_0_beta00010/src/Lucene.Net.Codecs/Memory/DirectPostingsFormat.cs/#L86">View Source</a> |
| </span> |
| <a id="Lucene_Net_Codecs_Memory_DirectPostingsFormat__ctor_" data-uid="Lucene.Net.Codecs.Memory.DirectPostingsFormat.#ctor*"></a> |
| <h4 id="Lucene_Net_Codecs_Memory_DirectPostingsFormat__ctor" data-uid="Lucene.Net.Codecs.Memory.DirectPostingsFormat.#ctor">DirectPostingsFormat()</h4> |
| <div class="markdown level1 summary"></div> |
| <div class="markdown level1 conceptual"></div> |
| <h5 class="decalaration">Declaration</h5> |
| <div class="codewrapper"> |
| <pre><code class="lang-csharp hljs">public DirectPostingsFormat()</code></pre> |
| </div> |
| <span class="small pull-right mobile-hide"> |
| <span class="divider">|</span> |
| <a href="https://github.com/apache/lucenenet/new/docs/4.8.0-beta00010/websites/apidocs/apiSpec/new?filename=Lucene_Net_Codecs_Memory_DirectPostingsFormat__ctor_System_Int32_System_Int32_.md&value=---%0Auid%3A%20Lucene.Net.Codecs.Memory.DirectPostingsFormat.%23ctor(System.Int32%2CSystem.Int32)%0Asummary%3A%20'*You%20can%20override%20summary%20for%20the%20API%20here%20using%20*MARKDOWN*%20syntax'%0A---%0A%0A*Please%20type%20below%20more%20information%20about%20this%20API%3A*%0A%0A">Improve this Doc</a> |
| </span> |
| <span class="small pull-right mobile-hide"> |
| <a href="https://github.com/NightOwl888/lucenenet/blob/release/Lucene.Net_4_8_0_beta00010/src/Lucene.Net.Codecs/Memory/DirectPostingsFormat.cs/#L98">View Source</a> |
| </span> |
| <a id="Lucene_Net_Codecs_Memory_DirectPostingsFormat__ctor_" data-uid="Lucene.Net.Codecs.Memory.DirectPostingsFormat.#ctor*"></a> |
| <h4 id="Lucene_Net_Codecs_Memory_DirectPostingsFormat__ctor_System_Int32_System_Int32_" data-uid="Lucene.Net.Codecs.Memory.DirectPostingsFormat.#ctor(System.Int32,System.Int32)">DirectPostingsFormat(Int32, Int32)</h4> |
| <div class="markdown level1 summary"><p><code data-dev-comment-type="paramref" class="paramref">minSkipCount</code> is how many terms in a row must have the |
| same prefix before we put a skip pointer down. Terms |
| with docFreq less than or equal <code data-dev-comment-type="paramref" class="paramref">lowFreqCutoff</code> will use a single int[] |
| to hold all docs, freqs, position and offsets; terms |
| with higher docFreq will use separate arrays. </p> |
| </div> |
| <div class="markdown level1 conceptual"></div> |
| <h5 class="decalaration">Declaration</h5> |
| <div class="codewrapper"> |
| <pre><code class="lang-csharp hljs">public DirectPostingsFormat(int minSkipCount, int lowFreqCutoff)</code></pre> |
| </div> |
| <h5 class="parameters">Parameters</h5> |
| <table class="table table-bordered table-striped table-condensed"> |
| <thead> |
| <tr> |
| <th>Type</th> |
| <th>Name</th> |
| <th>Description</th> |
| </tr> |
| </thead> |
| <tbody> |
| <tr> |
| <td><span class="xref">System.Int32</span></td> |
| <td><span class="parametername">minSkipCount</span></td> |
| <td></td> |
| </tr> |
| <tr> |
| <td><span class="xref">System.Int32</span></td> |
| <td><span class="parametername">lowFreqCutoff</span></td> |
| <td></td> |
| </tr> |
| </tbody> |
| </table> |
| <h3 id="methods">Methods |
| </h3> |
| <span class="small pull-right mobile-hide"> |
| <span class="divider">|</span> |
| <a href="https://github.com/apache/lucenenet/new/docs/4.8.0-beta00010/websites/apidocs/apiSpec/new?filename=Lucene_Net_Codecs_Memory_DirectPostingsFormat_FieldsConsumer_Lucene_Net_Index_SegmentWriteState_.md&value=---%0Auid%3A%20Lucene.Net.Codecs.Memory.DirectPostingsFormat.FieldsConsumer(Lucene.Net.Index.SegmentWriteState)%0Asummary%3A%20'*You%20can%20override%20summary%20for%20the%20API%20here%20using%20*MARKDOWN*%20syntax'%0A---%0A%0A*Please%20type%20below%20more%20information%20about%20this%20API%3A*%0A%0A">Improve this Doc</a> |
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| <a href="https://github.com/NightOwl888/lucenenet/blob/release/Lucene.Net_4_8_0_beta00010/src/Lucene.Net.Codecs/Memory/DirectPostingsFormat.cs/#L105">View Source</a> |
| </span> |
| <a id="Lucene_Net_Codecs_Memory_DirectPostingsFormat_FieldsConsumer_" data-uid="Lucene.Net.Codecs.Memory.DirectPostingsFormat.FieldsConsumer*"></a> |
| <h4 id="Lucene_Net_Codecs_Memory_DirectPostingsFormat_FieldsConsumer_Lucene_Net_Index_SegmentWriteState_" data-uid="Lucene.Net.Codecs.Memory.DirectPostingsFormat.FieldsConsumer(Lucene.Net.Index.SegmentWriteState)">FieldsConsumer(SegmentWriteState)</h4> |
| <div class="markdown level1 summary"></div> |
| <div class="markdown level1 conceptual"></div> |
| <h5 class="decalaration">Declaration</h5> |
| <div class="codewrapper"> |
| <pre><code class="lang-csharp hljs">public override FieldsConsumer FieldsConsumer(SegmentWriteState state)</code></pre> |
| </div> |
| <h5 class="parameters">Parameters</h5> |
| <table class="table table-bordered table-striped table-condensed"> |
| <thead> |
| <tr> |
| <th>Type</th> |
| <th>Name</th> |
| <th>Description</th> |
| </tr> |
| </thead> |
| <tbody> |
| <tr> |
| <td><span class="xref">Lucene.Net.Index.SegmentWriteState</span></td> |
| <td><span class="parametername">state</span></td> |
| <td></td> |
| </tr> |
| </tbody> |
| </table> |
| <h5 class="returns">Returns</h5> |
| <table class="table table-bordered table-striped table-condensed"> |
| <thead> |
| <tr> |
| <th>Type</th> |
| <th>Description</th> |
| </tr> |
| </thead> |
| <tbody> |
| <tr> |
| <td><span class="xref">Lucene.Net.Codecs.FieldsConsumer</span></td> |
| <td></td> |
| </tr> |
| </tbody> |
| </table> |
| <h5 class="overrides">Overrides</h5> |
| <div><span class="xref">Lucene.Net.Codecs.PostingsFormat.FieldsConsumer(Lucene.Net.Index.SegmentWriteState)</span></div> |
| <span class="small pull-right mobile-hide"> |
| <span class="divider">|</span> |
| <a href="https://github.com/apache/lucenenet/new/docs/4.8.0-beta00010/websites/apidocs/apiSpec/new?filename=Lucene_Net_Codecs_Memory_DirectPostingsFormat_FieldsProducer_Lucene_Net_Index_SegmentReadState_.md&value=---%0Auid%3A%20Lucene.Net.Codecs.Memory.DirectPostingsFormat.FieldsProducer(Lucene.Net.Index.SegmentReadState)%0Asummary%3A%20'*You%20can%20override%20summary%20for%20the%20API%20here%20using%20*MARKDOWN*%20syntax'%0A---%0A%0A*Please%20type%20below%20more%20information%20about%20this%20API%3A*%0A%0A">Improve this Doc</a> |
| </span> |
| <span class="small pull-right mobile-hide"> |
| <a href="https://github.com/NightOwl888/lucenenet/blob/release/Lucene.Net_4_8_0_beta00010/src/Lucene.Net.Codecs/Memory/DirectPostingsFormat.cs/#L110">View Source</a> |
| </span> |
| <a id="Lucene_Net_Codecs_Memory_DirectPostingsFormat_FieldsProducer_" data-uid="Lucene.Net.Codecs.Memory.DirectPostingsFormat.FieldsProducer*"></a> |
| <h4 id="Lucene_Net_Codecs_Memory_DirectPostingsFormat_FieldsProducer_Lucene_Net_Index_SegmentReadState_" data-uid="Lucene.Net.Codecs.Memory.DirectPostingsFormat.FieldsProducer(Lucene.Net.Index.SegmentReadState)">FieldsProducer(SegmentReadState)</h4> |
| <div class="markdown level1 summary"></div> |
| <div class="markdown level1 conceptual"></div> |
| <h5 class="decalaration">Declaration</h5> |
| <div class="codewrapper"> |
| <pre><code class="lang-csharp hljs">public override FieldsProducer FieldsProducer(SegmentReadState state)</code></pre> |
| </div> |
| <h5 class="parameters">Parameters</h5> |
| <table class="table table-bordered table-striped table-condensed"> |
| <thead> |
| <tr> |
| <th>Type</th> |
| <th>Name</th> |
| <th>Description</th> |
| </tr> |
| </thead> |
| <tbody> |
| <tr> |
| <td><span class="xref">Lucene.Net.Index.SegmentReadState</span></td> |
| <td><span class="parametername">state</span></td> |
| <td></td> |
| </tr> |
| </tbody> |
| </table> |
| <h5 class="returns">Returns</h5> |
| <table class="table table-bordered table-striped table-condensed"> |
| <thead> |
| <tr> |
| <th>Type</th> |
| <th>Description</th> |
| </tr> |
| </thead> |
| <tbody> |
| <tr> |
| <td><span class="xref">Lucene.Net.Codecs.FieldsProducer</span></td> |
| <td></td> |
| </tr> |
| </tbody> |
| </table> |
| <h5 class="overrides">Overrides</h5> |
| <div><span class="xref">Lucene.Net.Codecs.PostingsFormat.FieldsProducer(Lucene.Net.Index.SegmentReadState)</span></div> |
| </article> |
| </div> |
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