solr/core/src/test-files/solr/collection1/conf/schema-sim-default-override.xml

<?xml version="1.0" ?>
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<!-- Per-field similarity testing where default for fieldtypes w/o sim is overridden -->

<schema name="test" version="1.0">
  
  <similarity class="solr.SchemaSimilarityFactory" >
    <str name="defaultSimFromFieldType">sim-used-as-default-override</str>
  </similarity>

  <!--  some per-field similarity examples --> 
  <!--  specify a Similarity classname directly -->
  <fieldType name="sim-explicit" class="solr.TextField">
    <analyzer>
      <tokenizer class="solr.MockTokenizerFactory"/>
    </analyzer>
    <similarity class="org.apache.lucene.misc.SweetSpotSimilarity"/>
  </fieldType>

  <!--  specify a Similarity factory -->  
  <fieldType name="sim-used-as-default-override" class="solr.TextField">
    <analyzer>
      <tokenizer class="solr.MockTokenizerFactory"/>
    </analyzer>
    <similarity class="solr.CustomSimilarityFactory">
      <str name="echo">is there an echo?</str>
    </similarity>
  </fieldType>
  
  <!-- don't specify any sim at all: get the default  -->
  <fieldType name="sim-none-get-default" class="solr.TextField">
    <analyzer>
      <tokenizer class="solr.MockTokenizerFactory"/>
    </analyzer>
  </fieldType>

  <field name="id" type="string" indexed="true" stored="true" multiValued="false" required="false"/>
  <field name="sim1text" type="sim-explicit" indexed="true" stored="true"/>
  <field name="sim2text" type="sim-used-as-default-override" indexed="true" stored="true"/>
  <field name="sim3text" type="sim-none-get-default" indexed="true" stored="true"/>
  
  <!-- make sure custom sims work with dynamic fields -->
  <dynamicField name="*_sim1" type="sim-explicit" indexed="true" stored="true"/>
  <dynamicField name="*_sim2" type="sim-used-as-default-override" indexed="true" stored="true"/>
  <dynamicField name="*_sim3" type="sim-none-get-default" indexed="true" stored="true"/>

  <fieldType name="string" class="solr.StrField" omitNorms="true" positionIncrementGap="0"/>
  <uniqueKey>id</uniqueKey>
  
</schema>