Hi,
the schema.xml example provided for dovecot in /usr/share/doc/dovecot-<verison> does not work anymore with the newest Solr Version (as I know of 7.2.x) because some field classes and filter classes are deprecated in this version.
The changes (according to the Solr documentation) would have to be :
In the index analyzer :
<fieldType name="long" class="solr.TrieLongField" />
into
<fieldType name="long" class="solr.LongPointField" /> ......... <filter class="solr.WordDelimiterFilterFactory" generateWordParts="1" generateNumberParts="1" catenateWords="1" catenateNumbers="1" catenateAll="0" splitOnCaseChange="1"/>
into
<filter class="solr.WordDelimiterGraphFilterFactory" generateWordParts="1" generateNumberParts="1" catenateWords="1" catenateNumbers="1" catenateAll="0" splitOnCaseChange="1"/>
and because this is used in the index analyzer it has to be followed by
<filter class="solr.FlattenGraphFilterFactory"/> ..............
In the query analyzer : <filter class="solr.SynonymFilterFactory" synonyms="synonyms.txt" ignoreCase="true" expand="true"/>
into
<filter class="solr.SynonymGraphFilterFactory" synonyms="synonyms.txt" ignoreCase="true" expand="true"/> ............... <filter class="solr.WordDelimiterFilterFactory" generateWordParts="1" generateNumberParts="1" catenateWords="0" catenateNumbers="0" catenateAll="0" splitOnCaseChange="1"/>
into
<filter class="solr.WordDelimiterGraphFilterFactory" generateWordParts="1" generateNumberParts="1" catenateWords="0" catenateNumbers="0" catenateAll="0" splitOnCaseChange="1"/> .........
Don't know if you want to mention this somewhere in your docs.
Cheers, Thomas