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https://issues.apache.org/jira/browse/SOLR-14434?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Trey Grainger updated SOLR-14434:
---------------------------------
Affects Version/s: (was: 8.5.1)
(was: 8.4.1)
(was: 8.5)
(was: 8.3.1)
(was: 8.4)
(was: 8.3)
(was: 8.1.1)
(was: 8.2)
(was: 8.1)
(was: 8.0)
8.6
> Add documentation for adding multiterm analyzers in Schema API
> --------------------------------------------------------------
>
> Key: SOLR-14434
> URL: https://issues.apache.org/jira/browse/SOLR-14434
> Project: Solr
> Issue Type: Bug
> Security Level: Public(Default Security Level. Issues are Public)
> Components: Schema and Analysis
> Affects Versions: 8.6
> Reporter: Trey Grainger
> Priority: Major
>
> Originally this was filed as a bug report, but upon further inspection I
> realized the usage was just undocumented and just a result of inconsistent
> property name (casing) between the XML and JSON. Changing this to a Jira to
> add documentation so others don't run into this issue in the future.
> Also need to document that the "analysis/field" API ignores {{multiterm}}
> analysis and thus doesn't reflect the full nature of incoming queries. This
> has been an annoying quirk for years and I think would be worth fixing, but
> for now we should at least document it.
> --------------
> In addition to "{{index}}" and "{{query}}" analyzers, Solr supports adding an
> explicit "{{multiterm}}" analyzer to schema {{fieldType}} definitions. This
> allows for specific control over analysis for things like wildcard terms,
> prefix queries, range queries, etc. For example, the following would cause
> the wildcard query for "{{hats*}}" to get stemmed to "{{hat*}}" instead of
> "{{hats*}}", and thus match on the indexed version of "{{hat}}".
> {code:java}
> <fieldType class="solr.TextField" multiValued="true" name="multiterm_test"
> positionIncrementGap="100" termOffsets="true" termVectors="true">
> <analyzer type="index">
> <tokenizer class="solr.ClassicTokenizerFactory"/>
> <filter class="solr.LowerCaseFilterFactory"/>
> <filter class="solr.EnglishMinimalStemFilterFactory"/>
> </analyzer>
> <analyzer type="query">
> <tokenizer class="solr.ClassicTokenizerFactory"/>
> <filter class="solr.SynonymGraphFilterFactory" expand="true"
> ignoreCase="true" synonyms="synonyms.txt"/>
> <filter class="solr.LowerCaseFilterFactory"/>
> <filter class="solr.EnglishMinimalStemFilterFactory"/>
> </analyzer>
> <analyzer type="multiterm">
> <tokenizer class="solr.ClassicTokenizerFactory"/>
> <filter class="solr.LowerCaseFilterFactory"/>
> <filter class="solr.EnglishMinimalStemFilterFactory"/>
> </analyzer>
> </fieldType>{code}
> In the xml version this analyzer is called "{{multiterm}}", whereas it's
> "{{multiTerm}}" in the JsonAPI. This isn't in the documentation anywhere and
> just cost me a bunch of time debugging through the code until I finally found
> what was going on. Using this ticket to add better documentation around usage
> and gotchas around this feature.
>
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