IBX-6649: Added support for spell checking

[adamwojs]

Question	Answer
JIRA issue	IBX-6649
Type	feature
Target Ibexa version	v4.6
BC breaks	no
Depends on	ibexa/core#276

Implemented spellchecking in Solr Search Engine based on https://solr.apache.org/guide/solr/latest/query-guide/spell-checking.html

Configuration

A) Edit Solr configuration: server/<name>/<...>/solrconfig.xml:

1. Configure spellcheck component

<searchComponent name="spellcheck" class="solr.SpellCheckComponent">
    <lst name="spellchecker">
      <str name="name">default</str>
      <str name="field">meta_content__text_t</str>
      <str name="classname">solr.DirectSolrSpellChecker</str>
      <str name="distanceMeasure">internal</str>
      <float name="accuracy">0.5</float>
      <int name="maxEdits">2</int>
      <int name="minPrefix">1</int>
      <int name="maxInspections">5</int>
      <int name="minQueryLength">4</int>
      <float name="maxQueryFrequency">0.01</float>
    </lst>
</searchComponent>

2. Add spellcheck component to /select request handler

<requestHandler name="/select" class="solr.SearchHandler">
    <!-- [...] -->
    <arr name="last-components">
      <str>spellcheck</str>
    </arr>
</requestHandler>

B) Restart Solr server

bin/solr restart -s <name>

Documentation

• https://solr.apache.org/guide/8_11/requesthandlers-and-searchcomponents-in-solrconfig.html#RequestHandlersandSearchComponentsinSolrConfig-SearchComponents
• https://solr.apache.org/guide/8_11/spell-checking.html

Successful build

https://github.com/ibexa/solr/actions/runs/7097242996

Checklist:

• Provided PR description.
• Tested the solution manually.
• Provided automated test coverage (see IBX-6649: Added support for spell checking core#276).
• Checked that target branch is set correctly (main for features, the oldest supported for bugs).
• Ran PHP CS Fixer for new PHP code (use $ composer fix-cs).
• Asked for a review (ping for example @ibexa/php-dev for back-end changes and/or @ibexa/javascript-dev for front-end changes).

[sonarcloud]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

No Coverage information
0.0% Duplication

[sonarcloud]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

No Coverage information
0.0% Duplication