如何使用 SOLR copyField 指令 [英] How to use SOLR copyField directive

问题描述

我有一个相当简单的 SOLR 结构，它包含三个不同的字段:

I have a rather simple SOLR structure, that hold three different fields:

id、文本和标签

在 schema.xml 中我设置了以下内容

in the schema.xml I set the following

<uniqueKey>id</uniqueKey>
<defaultSearchField>text</defaultSearchField>
<solrQueryParser defaultOperator="AND"/>
<copyField source="tags" dest="text"/>

但是，当我搜索仅作为标签出现的单词时，找不到该文档.

However, when I search a word that only appears as a tag, then the document is not found.

我的问题是:copyField 是否在任何分析器运行(索引和查询)之前发生，如 此处所述 还是在查询分析器之前?

My question here is: does copyField happen before any analyzer runs (index and query) as described here or just before the query analyzer?

编辑

分析器定义:

<fieldType name="text" 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" preserveOriginal="1" />
        <filter class="solr.StopFilterFactory" ignoreCase="true" words="stopwords.txt" enablePositionIncrements="true" />
        <filter class="solr.LowerCaseFilterFactory" />              
        <filter class="solr.SnowballPorterFilterFactory" language="German" />
        <filter class="solr.RemoveDuplicatesTokenFilterFactory"/>
    </analyzer>
    <analyzer type="query">
        <tokenizer class="solr.WhitespaceTokenizerFactory"/>
        <filter class="solr.WordDelimiterFilterFactory" generateWordParts="1" generateNumberParts="1" catenateWords="1" catenateNumbers="1" catenateAll="0" splitOnCaseChange="1" preserveOriginal="1" />
        <filter class="solr.StopFilterFactory" ignoreCase="true" words="stopwords.txt" enablePositionIncrements="true" />
        <filter class="solr.LowerCaseFilterFactory" />              
        <filter class="solr.SnowballPorterFilterFactory" language="German" />
        <filter class="solr.RemoveDuplicatesTokenFilterFactory"/>
    </analyzer>
</fieldType>

和字段类型定义(它们几乎是默认配置):

and the field-type definitions (they are pretty much as the default configs):

<fieldType name="string" class="solr.StrField" sortMissingLast="true" omitNorms="true"/>
<fieldType name="int" class="solr.TrieIntField" precisionStep="0" omitNorms="true" positionIncrementGap="0"/>

最后是字段定义:

<fields>
    <field name="id" type="string" indexed="true" stored="true" required="true" />
    <field name="text" type="text" indexed="true" stored="false" multiValued="true" />
    <field name="tags" type="text" indexed="false" stored="false" />
</fields>
<uniqueKey>id</uniqueKey>
<defaultSearchField>text</defaultSearchField>
<solrQueryParser defaultOperator="AND"/>
<copyField source="tags" dest="text"/>

推荐答案

copyField 在文档被索引时完成，所以它在索引分析器之前.就像您将相同的输入文本放在两个不同的字段中一样.但在那之后，这一切都取决于您为这两个字段定义的分析器.

The copyField is done when a document is indexed, so it is before the index analyzer. It is really like you had put the same input text in two different fields. But after that, it all depends on the analyzers you defined for both fields.

这篇关于如何使用 SOLR copyField 指令的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！