solr之positionIncrementGap

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发布于 2022-03-29 14:33:12

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发布于 2022-03-29 14:33:12

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positionIncrementGap这个特性针对multiValue字段使用，用于设置多值数据间的间隔，常见用法如下：

    <fieldType name="text_general_pos0" class="solr.TextField" positionIncrementGap="100">
       <analyzer type="index">
         <tokenizer class="solr.StandardTokenizerFactory"/>
         <filter class="solr.StopFilterFactory" ignoreCase="true" words="stopwords.txt" />
         <!-- in this example, we will only use synonyms at query time
         <filter class="solr.SynonymGraphFilterFactory" synonyms="index_synonyms.txt" ignoreCase="true" expand="false"/>
         <filter class="solr.FlattenGraphFilterFactory"/>
         -->
         <filter class="solr.LowerCaseFilterFactory"/>
       </analyzer>
       <analyzer type="query">
         <tokenizer class="solr.StandardTokenizerFactory"/>
         <filter class="solr.StopFilterFactory" ignoreCase="true" words="stopwords.txt" />
         <filter class="solr.SynonymGraphFilterFactory" synonyms="synonyms.txt" ignoreCase="true" expand="true"/>
         <filter class="solr.LowerCaseFilterFactory"/>
       </analyzer>
     </fieldType>

针对多指字符型字段而言，positionIncrementGap这个值最好不要设置为0，否则查询到的结果可能不是我们想要的，