用SOLR和LowerCaseFilterFactory索引字段 [英] Indexing Fields with SOLR and LowerCaseFilterFactory

问题描述

我有一个定义为

<fieldType name="text_ws_lc" class="solr.TextField" positionIncrementGap="100">
  <analyzer type="index">
    <tokenizer class="solr.WhitespaceTokenizerFactory"/>
    <filter class="solr.WordDelimiterFilterFactory" generateWordParts="1" generateNumberParts="1" catenateWords="1" catenateNumbers="1" catenateAll="0" splitOnCaseChange="1"/>
    <filter class="solr.LowerCaseFilterFactory"/>
  </analyzer>
  <analyzer type="query">
    <tokenizer class="solr.WhitespaceTokenizerFactory"/>
    <filter class="solr.WordDelimiterFilterFactory" generateWordParts="1" generateNumberParts="1" catenateWords="0" catenateNumbers="0" catenateAll="0" splitOnCaseChange="1"/>
    <filter class="solr.LowerCaseFilterFactory"/>
  </analyzer>
</fieldType>

对于这种类型的字段，在不区分大小写的情况下进行搜索非常有效.但是，我希望将原始值插入到字段中，而不是小写值.是否可以从索引分析器中删除LowerCaseFilterFactory并获得此功能? ALA

Which works fine for searching without case sensitivity on fields that are this type. However I want the original value inserted into the field NOT the lowercase value. Is it possible to remove the LowerCaseFilterFactory from the index analyzer and get this functionality? ALA

<fieldType name="text_ws_lc_std" class="solr.TextField" positionIncrementGap="100">
  <analyzer type="index">
    <tokenizer class="solr.WhitespaceTokenizerFactory"/>
    <filter class="solr.WordDelimiterFilterFactory" generateWordParts="1" generateNumberParts="1" catenateWords="1" catenateNumbers="1" catenateAll="0" splitOnCaseChange="1"/>
    <filter class="solr.LowerCaseFilterFactory"/>
  </analyzer>
  <analyzer type="query">
    <tokenizer class="solr.WhitespaceTokenizerFactory"/>
    <filter class="solr.WordDelimiterFilterFactory" generateWordParts="1" generateNumberParts="1" catenateWords="0" catenateNumbers="0" catenateAll="0" splitOnCaseChange="1"/>
    <filter class="solr.LowerCaseFilterFactory"/>
  </analyzer>
</fieldType>

推荐答案

您应该定义两个字段:一个字段的小写值用于搜索，另一个字段用于保留原始值.您可以在schema.xml中使用复制字段指令来使两个字段保持同步.

You should define two fields: one with the value in lower case used for searching and another one to hold the original value. You can use a copy field instruction in your schema.xml to maintain the two fields in sync.

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