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| <h1 id="Lucene_Net_Facet_SortedSet" data-uid="Lucene.Net.Facet.SortedSet" class="text-break">Namespace Lucene.Net.Facet.SortedSet |
| </h1> |
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| <h3 id="classes">Classes |
| </h3> |
| <h4><a class="xref" href="Lucene.Net.Facet.SortedSet.DefaultSortedSetDocValuesReaderState.html">DefaultSortedSetDocValuesReaderState</a></h4> |
| <section><p>Default implementation of <a class="xref" href="Lucene.Net.Facet.SortedSet.SortedSetDocValuesFacetCounts.html">SortedSetDocValuesFacetCounts</a></p> |
| </section> |
| <h4><a class="xref" href="Lucene.Net.Facet.SortedSet.SortedSetDocValuesFacetCounts.html">SortedSetDocValuesFacetCounts</a></h4> |
| <section><p>Compute facets counts from previously |
| indexed <a class="xref" href="Lucene.Net.Facet.SortedSet.SortedSetDocValuesFacetField.html">SortedSetDocValuesFacetField</a>, |
| without require a separate taxonomy index. Faceting is |
| a bit slower (~25%), and there is added cost on every |
| <a class="xref" href="../Lucene.Net/Lucene.Net.Index.IndexReader.html">IndexReader</a> open to create a new |
| <a class="xref" href="Lucene.Net.Facet.SortedSet.SortedSetDocValuesReaderState.html">SortedSetDocValuesReaderState</a>. Furthermore, this does |
| not support hierarchical facets; only flat (dimension + |
| label) facets, but it uses quite a bit less RAM to do |
| so.</p> |
| <p><strong>NOTE</strong>: this class should be instantiated and |
| then used from a single thread, because it holds a |
| thread-private instance of <a class="xref" href="../Lucene.Net/Lucene.Net.Index.SortedSetDocValues.html">SortedSetDocValues</a>. |
| |
| </p> |
| <p><strong>NOTE:</strong>: tie-break is by unicode sort order |
| |
| @lucene.experimental |
| </p> |
| </section> |
| <h4><a class="xref" href="Lucene.Net.Facet.SortedSet.SortedSetDocValuesFacetField.html">SortedSetDocValuesFacetField</a></h4> |
| <section><p>Add an instance of this to your <a class="xref" href="../Lucene.Net/Lucene.Net.Documents.Document.html">Document</a> for every facet |
| label to be indexed via <a class="xref" href="../Lucene.Net/Lucene.Net.Index.SortedSetDocValues.html">SortedSetDocValues</a>. </p> |
| </section> |
| <h4><a class="xref" href="Lucene.Net.Facet.SortedSet.SortedSetDocValuesReaderState.html">SortedSetDocValuesReaderState</a></h4> |
| <section><p>Wraps a <a class="xref" href="../Lucene.Net/Lucene.Net.Index.IndexReader.html">IndexReader</a> and resolves ords |
| using existing <a class="xref" href="../Lucene.Net/Lucene.Net.Index.SortedSetDocValues.html">SortedSetDocValues</a> APIs without a |
| separate taxonomy index. This only supports flat facets |
| (dimension + label), and it makes faceting a bit |
| slower, adds some cost at reopen time, but avoids |
| managing the separate taxonomy index. It also requires |
| less RAM than the taxonomy index, as it manages the flat |
| (2-level) hierarchy more efficiently. In addition, the |
| tie-break during faceting is now meaningful (in label |
| sorted order).</p> |
| <p><strong>NOTE</strong>: creating an instance of this class is |
| somewhat costly, as it computes per-segment ordinal maps, |
| so you should create it once and re-use that one instance |
| for a given <a class="xref" href="../Lucene.Net/Lucene.Net.Index.IndexReader.html">IndexReader</a>. |
| </p> |
| </section> |
| <h4><a class="xref" href="Lucene.Net.Facet.SortedSet.SortedSetDocValuesReaderState.OrdRange.html">SortedSetDocValuesReaderState.OrdRange</a></h4> |
| <section><p>Holds start/end range of ords, which maps to one |
| dimension (someday we may generalize it to map to |
| hierarchies within one dimension). </p> |
| </section> |
| </article> |
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