是Solr的SuggestComponent能够返回瓦，而不是整场值？ [英] Is Solr SuggestComponent able to return shingles instead of whole field values?

问题描述

我使用Solr的5.0.0，并想创建一个自动填充功能生成从我的文档的字克（或带状疱疹）的建议。
问题是，在提出查询的回报，我只得到完整的搜索领域的条款，这可能是长期的极端

I use solr 5.0.0 and want to create an autocomplete functionality generating suggestions from the word-grams (or shingles) of my documents. The problem is that in return of a suggest-query I only get complete "terms" of the search field which can be extremly long.

目前存在的问题：

输入：如此
建议：
......的极端长文本的所以 N久文本继续......

Input:"so" Suggestions: "......extremly long text son long text continuing......"

......下一个长文本的所以 LAR下一个文本继续......

"......next long text solar next text continuing......"

目标：

输入：所以

带状疱疹建议：

所以 N

所以 LAR

所以 LAR测试

等

<searchComponent name="suggest" class="solr.SuggestComponent" 
               enable="${solr.suggester.enabled:true}"     >
<lst name="suggester">
  <str name="name">mySuggester</str>
  <str name="lookupImpl">AnalyzingInfixLookupFactory</str>      
  <str name="dictionaryImpl">DocumentDictionaryFactory</str>
  <str name="field">title_and_description_suggest</str>
  <str name="weightField">price</str>
  <str name="suggestAnalyzerFieldType">autocomplete</str>
  <str name="queryAnalyzerFieldType">autocomplete</str>
 <str name="buildOnCommit">true</str>
</lst>

schema.xml中：

schema.xml:

<fieldType name="autocomplete" class="solr.TextField" positionIncrementGap="100">
    <analyzer>
      <tokenizer class="solr.StandardTokenizerFactory"/>
      <filter class="solr.LowerCaseFilterFactory"/>
      <filter class="solr.StopFilterFactory" ignoreCase="true" words="lang/stopwords_de.txt" format="snowball"/>
      <filter class="solr.ShingleFilterFactory" maxShingleSize="2" outputUnigrams="true" outputUnigramsIfNoShingles="true"/>
      <filter class="solr.RemoveDuplicatesTokenFilterFactory"/>
    </analyzer>
</fieldType>

我要回最多3个字作为自动完成任期。这可能与SuggestComponent或者你会怎么做呢？不管我怎么努力，我总是收到匹配的文档的完整的字段值。

I want to return max 3 words as autocomplete term. Is this possible with the SuggestComponent or how would you do it? No matter what I try I always receive the complete field value of matching documents.

是预期的行为，或者我做了什么错了？

Is that expected behaviour or what did I do wrong?

提前感谢

推荐答案

schema.xml中定义的字段类型如下：

 <fieldType name="text_autocomplete" class="solr.TextField" positionIncrementGap="100">
        <analyzer type="index">
            <tokenizer class="solr.WhitespaceTokenizerFactory"/>
            <filter class="solr.LowerCaseFilterFactory"/>
            <filter class="solr.ShingleFilterFactory" minShingleSize="2" maxShingleSize="5"/>
        </analyzer>
        <analyzer type="query">
            <tokenizer class="solr.KeywordTokenizerFactory"/>
            <filter class="solr.LowerCaseFilterFactory"/>
        </analyzer>
    </fieldType>

schema.xml中定义字段，如下所示：

<field name="example_field" type="text_autocomplete" indexed="true" stored="true"/>

写您的查询，如下所示：

query?q=*&
rows=0&
facet=true&
facet.field=example_field&
facet.limit=-1&
wt=json&
indent=true&
facet.prefix=so

在小面。preFIX字段中，指定所搜索的术语要为其建议（'这样'，在本实施例）。如果您需要在建议少于5个字，因此降低maxShingleSize在字段类型定义。默认情况下，你会得到的结果降低其发生频率的顺序。

In the facet.prefix field, specify the term being searched for which you want suggestions ('so', in this example). If you need less than 5 words in the suggestion, reduce maxShingleSize in the fieldType definition accordingly. By default, you will get the results in decreasing order of their frequency of occurrence.

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