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feat(solr): add exact-match field and ranking results #417

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cc989fc
feat(solr): add exact-match field and ranking results
PouyaMohseni Nov 13, 2025
be3d0cc
fix: enhance Solr exact match
PouyaMohseni Dec 4, 2025
5e26e92
fix: update qf configuration and remove redundant df setting
PouyaMohseni Dec 5, 2025
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28 changes: 17 additions & 11 deletions solr/cores/conf/schema.xml
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Original file line number Diff line number Diff line change
Expand Up @@ -55,6 +55,7 @@

<fieldType name="random" class="solr.RandomSortField" indexed="true" />

<!-- For general text with ngram for flexible search -->
<fieldType name="text_general" class="solr.TextField" positionIncrementGap="100">
<analyzer type="index">
<tokenizer class="solr.StandardTokenizerFactory" />
Expand All @@ -66,29 +67,34 @@
<filter class="solr.LowerCaseFilterFactory" />
</analyzer>
</fieldType>
<!-- Just like text_general except it reverses the characters of
each token, to enable more efficient leading wildcard queries. -->
<fieldType name="text_general_rev" class="solr.TextField" positionIncrementGap="100">

<!-- Exact match text field with term vectors -->
<fieldType name="text_vector" class="solr.TextField" positionIncrementGap="100" termVectors="true">
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@dchiller dchiller Dec 10, 2025

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What's the purpose of termVectors = true here? What is our current use-case for them?

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@PouyaMohseni PouyaMohseni Dec 17, 2025

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Thank you. I removed that. It was originally used for experimenting with highlighting matched parts, and I forgot to clear it.

<analyzer type="index">
<tokenizer class="solr.StandardTokenizerFactory" />
<tokenizer class="solr.KeywordTokenizerFactory"/>
<filter class="solr.LowerCaseFilterFactory" />
<filter class="solr.ReversedWildcardFilterFactory" withOriginal="true" maxPosAsterisk="3" maxPosQuestion="2" maxFractionAsterisk="0.33" />
</analyzer>
<analyzer type="query">
<tokenizer class="solr.StandardTokenizerFactory" />
<tokenizer class="solr.KeywordTokenizerFactory"/>
<filter class="solr.LowerCaseFilterFactory" />
</analyzer>
</fieldType>



<fieldtype name="ignored" stored="false" indexed="false" multiValued="true" class="solr.StrField" />

<!-- Define the new text field for queries -->
<field name="text" type="text_general" indexed="true" stored="true" multiValued="true"/>
<!-- Define the new text field for ngram queries -->
<field name="text_ngram" type="text_general" indexed="true" stored="false" multiValued="true"/>

<!-- Define the new text field for exact match queries -->
<field name="text_exact" type="text_vector" indexed="true" stored="false" multiValued="true"/>

<!-- Define the field for storing the thumbnail URL -->
<field name="thumbnail_url" type="string" stored="true" indexed="false" />

<!-- Copy field directives for aggregating values into the text field -->
<copyField source="wikidata_id_s" dest="text"/>
<copyField source="*_ss" dest="text" />
<copyField source="*_ss" dest="text_ngram" />

<copyField source="wikidata_id_s" dest="text_exact"/>
<copyField source="*_ss" dest="text_exact" />
</schema>
5 changes: 4 additions & 1 deletion solr/cores/conf/solrconfig.xml
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Expand Up @@ -71,10 +71,13 @@
<lst name="defaults">
<str name="echoParams">explicit</str>
<int name="rows">10</int>
<str name="df">text</str>
<str name="defType">edismax</str>
<str name="df">text_exact text_ngram</str>
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<str name="qf">text_exact^2 text_ngram</str>
</lst>
</requestHandler>


<!-- A request handler that returns indented JSON by default -->
<requestHandler name="/query" class="solr.SearchHandler">
<lst name="defaults">
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