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    Namespace Lucene.Net.Analysis.Reverse

    Filter to reverse token text.

    Classes

    ReverseStringFilter

    Reverse token string, for example "country" => "yrtnuoc".

    If Lucene.Net.Analysis.Reverse.ReverseStringFilter.marker is supplied, then tokens will be also prepended by that character. For example, with a marker of \u0001, "country" => "\u0001yrtnuoc". This is useful when implementing efficient leading wildcards search.

    You must specify the required LuceneVersion compatibility when creating ReverseStringFilter, or when using any of its static methods:

    • As of 3.1, supplementary characters are handled correctly

    ReverseStringFilterFactory

    Factory for ReverseStringFilter.

    <fieldType name="text_rvsstr" class="solr.TextField" positionIncrementGap="100">
      <analyzer>
        <tokenizer class="solr.WhitespaceTokenizerFactory"/>
        <filter class="solr.ReverseStringFilterFactory"/>
      </analyzer>
    </fieldType>

    @since solr 1.4

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