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| <h1 id="Lucene_Net_Util_Packed_BlockPackedWriter" data-uid="Lucene.Net.Util.Packed.BlockPackedWriter" class="text-break">Class BlockPackedWriter |
| </h1> |
| <div class="markdown level0 summary"><p>A writer for large sequences of longs. |
| <p> |
| The sequence is divided into fixed-size blocks and for each block, the |
| difference between each value and the minimum value of the block is encoded |
| using as few bits as possible. Memory usage of this class is proportional to |
| the block size. Each block has an overhead between 1 and 10 bytes to store |
| the minimum value and the number of bits per value of the block. |
| <p> |
| Format: |
| <ul><li><BLock><sup>BlockCount</sup></li><li>BlockCount: ⌈ ValueCount / BlockSize ⌉</li><li>Block: <Header, (Ints)></li><li>Header: <Token, (MinValue)></li><li>Token: a byte (<a class="xref" href="Lucene.Net.Store.DataOutput.html#Lucene_Net_Store_DataOutput_WriteByte_System_Byte_">WriteByte(Byte)</a>), first 7 bits are the |
| number of bits per value (<code>bitsPerValue</code>). If the 8th bit is 1, |
| then MinValue (see next) is <code>0</code>, otherwise MinValue and needs to |
| be decoded</li><li>MinValue: a |
| <a href="https://developers.google.com/protocol-buffers/docs/encoding#types">zigzag-encoded</a> |
| variable-length <span class="xref">System.Int64</span> (<a class="xref" href="Lucene.Net.Store.DataOutput.html#Lucene_Net_Store_DataOutput_WriteVInt64_System_Int64_">WriteVInt64(Int64)</a>) whose value |
| should be added to every int from the block to restore the original |
| values</li><li>Ints: If the number of bits per value is <code>0</code>, then there is |
| nothing to decode and all ints are equal to MinValue. Otherwise: BlockSize |
| packed ints (<a class="xref" href="Lucene.Net.Util.Packed.PackedInt32s.html">PackedInt32s</a>) encoded on exactly <code>bitsPerValue</code> |
| bits per value. They are the subtraction of the original values and |
| MinValue</li></ul> |
| <p> |
| <div class="lucene-block lucene-internal">This is a Lucene.NET INTERNAL API, use at your own risk</div></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"><a class="xref" href="Lucene.Net.Util.Packed.AbstractBlockPackedWriter.html">AbstractBlockPackedWriter</a></div> |
| <div class="level2"><span class="xref">BlockPackedWriter</span></div> |
| </div> |
| <div class="inheritedMembers"> |
| <h5>Inherited Members</h5> |
| <div> |
| <a class="xref" href="Lucene.Net.Util.Packed.AbstractBlockPackedWriter.html#Lucene_Net_Util_Packed_AbstractBlockPackedWriter_m_out">AbstractBlockPackedWriter.m_out</a> |
| </div> |
| <div> |
| <a class="xref" href="Lucene.Net.Util.Packed.AbstractBlockPackedWriter.html#Lucene_Net_Util_Packed_AbstractBlockPackedWriter_m_values">AbstractBlockPackedWriter.m_values</a> |
| </div> |
| <div> |
| <a class="xref" href="Lucene.Net.Util.Packed.AbstractBlockPackedWriter.html#Lucene_Net_Util_Packed_AbstractBlockPackedWriter_m_blocks">AbstractBlockPackedWriter.m_blocks</a> |
| </div> |
| <div> |
| <a class="xref" href="Lucene.Net.Util.Packed.AbstractBlockPackedWriter.html#Lucene_Net_Util_Packed_AbstractBlockPackedWriter_m_off">AbstractBlockPackedWriter.m_off</a> |
| </div> |
| <div> |
| <a class="xref" href="Lucene.Net.Util.Packed.AbstractBlockPackedWriter.html#Lucene_Net_Util_Packed_AbstractBlockPackedWriter_m_ord">AbstractBlockPackedWriter.m_ord</a> |
| </div> |
| <div> |
| <a class="xref" href="Lucene.Net.Util.Packed.AbstractBlockPackedWriter.html#Lucene_Net_Util_Packed_AbstractBlockPackedWriter_m_finished">AbstractBlockPackedWriter.m_finished</a> |
| </div> |
| <div> |
| <a class="xref" href="Lucene.Net.Util.Packed.AbstractBlockPackedWriter.html#Lucene_Net_Util_Packed_AbstractBlockPackedWriter_Reset_Lucene_Net_Store_DataOutput_">AbstractBlockPackedWriter.Reset(DataOutput)</a> |
| </div> |
| <div> |
| <a class="xref" href="Lucene.Net.Util.Packed.AbstractBlockPackedWriter.html#Lucene_Net_Util_Packed_AbstractBlockPackedWriter_Add_System_Int64_">AbstractBlockPackedWriter.Add(Int64)</a> |
| </div> |
| <div> |
| <a class="xref" href="Lucene.Net.Util.Packed.AbstractBlockPackedWriter.html#Lucene_Net_Util_Packed_AbstractBlockPackedWriter_Finish">AbstractBlockPackedWriter.Finish()</a> |
| </div> |
| <div> |
| <a class="xref" href="Lucene.Net.Util.Packed.AbstractBlockPackedWriter.html#Lucene_Net_Util_Packed_AbstractBlockPackedWriter_Ord">AbstractBlockPackedWriter.Ord</a> |
| </div> |
| <div> |
| <a class="xref" href="Lucene.Net.Util.Packed.AbstractBlockPackedWriter.html#Lucene_Net_Util_Packed_AbstractBlockPackedWriter_WriteValues_System_Int32_">AbstractBlockPackedWriter.WriteValues(Int32)</a> |
| </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> |
| <div> |
| <span class="xref">System.Object.GetHashCode()</span> |
| </div> |
| <div> |
| <span class="xref">System.Object.GetType()</span> |
| </div> |
| <div> |
| <span class="xref">System.Object.MemberwiseClone()</span> |
| </div> |
| <div> |
| <span class="xref">System.Object.ReferenceEquals(System.Object, System.Object)</span> |
| </div> |
| <div> |
| <span class="xref">System.Object.ToString()</span> |
| </div> |
| </div> |
| <h6><strong>Namespace</strong>: <a class="xref" href="Lucene.Net.Util.Packed.html">Lucene.Net.Util.Packed</a></h6> |
| <h6><strong>Assembly</strong>: Lucene.Net.dll</h6> |
| <h5 id="Lucene_Net_Util_Packed_BlockPackedWriter_syntax">Syntax</h5> |
| <div class="codewrapper"> |
| <pre><code class="lang-csharp hljs">public sealed class BlockPackedWriter : AbstractBlockPackedWriter</code></pre> |
| </div> |
| <h3 id="constructors">Constructors |
| </h3> |
| <span class="small pull-right mobile-hide"> |
| <span class="divider">|</span> |
| <a href="https://github.com/apache/lucenenet/new/docs/4.8.0-beta00011/websites/apidocs/apiSpec/new?filename=Lucene_Net_Util_Packed_BlockPackedWriter__ctor_Lucene_Net_Store_DataOutput_System_Int32_.md&value=---%0Auid%3A%20Lucene.Net.Util.Packed.BlockPackedWriter.%23ctor(Lucene.Net.Store.DataOutput%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> |
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| <span class="small pull-right mobile-hide"> |
| <a href="https://github.com/NightOwl888/lucenenet/blob/release/Lucene.Net_4_8_0_beta00011/src/Lucene.Net/Util/Packed/BlockPackedWriter.cs/#L66">View Source</a> |
| </span> |
| <a id="Lucene_Net_Util_Packed_BlockPackedWriter__ctor_" data-uid="Lucene.Net.Util.Packed.BlockPackedWriter.#ctor*"></a> |
| <h4 id="Lucene_Net_Util_Packed_BlockPackedWriter__ctor_Lucene_Net_Store_DataOutput_System_Int32_" data-uid="Lucene.Net.Util.Packed.BlockPackedWriter.#ctor(Lucene.Net.Store.DataOutput,System.Int32)">BlockPackedWriter(DataOutput, Int32)</h4> |
| <div class="markdown level1 summary"><p>Sole constructor. </p> |
| </div> |
| <div class="markdown level1 conceptual"></div> |
| <h5 class="decalaration">Declaration</h5> |
| <div class="codewrapper"> |
| <pre><code class="lang-csharp hljs">public BlockPackedWriter(DataOutput out, int blockSize)</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><a class="xref" href="Lucene.Net.Store.DataOutput.html">DataOutput</a></td> |
| <td><span class="parametername">out</span></td> |
| <td></td> |
| </tr> |
| <tr> |
| <td><span class="xref">System.Int32</span></td> |
| <td><span class="parametername">blockSize</span></td> |
| <td><p>the number of values of a single block, must be a power of 2 </p> |
| </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-beta00011/websites/apidocs/apiSpec/new?filename=Lucene_Net_Util_Packed_BlockPackedWriter_Flush.md&value=---%0Auid%3A%20Lucene.Net.Util.Packed.BlockPackedWriter.Flush%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_beta00011/src/Lucene.Net/Util/Packed/BlockPackedWriter.cs/#L71">View Source</a> |
| </span> |
| <a id="Lucene_Net_Util_Packed_BlockPackedWriter_Flush_" data-uid="Lucene.Net.Util.Packed.BlockPackedWriter.Flush*"></a> |
| <h4 id="Lucene_Net_Util_Packed_BlockPackedWriter_Flush" data-uid="Lucene.Net.Util.Packed.BlockPackedWriter.Flush">Flush()</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">protected override void Flush()</code></pre> |
| </div> |
| <h5 class="overrides">Overrides</h5> |
| <div><a class="xref" href="Lucene.Net.Util.Packed.AbstractBlockPackedWriter.html#Lucene_Net_Util_Packed_AbstractBlockPackedWriter_Flush">AbstractBlockPackedWriter.Flush()</a></div> |
| <h3 id="seealso">See Also</h3> |
| <div class="seealso"> |
| <div><a class="xref" href="Lucene.Net.Util.Packed.BlockPackedReaderIterator.html">BlockPackedReaderIterator</a></div> |
| <div><a class="xref" href="Lucene.Net.Util.Packed.BlockPackedReader.html">BlockPackedReader</a></div> |
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