solr/core/src/test-files/solr/collection1/conf/schema-custom-field.xml

<?xml version="1.0" ?>
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<schema name="test-custom-field-sort" version="1.6">
  <fieldType name="int" class="${solr.tests.IntegerFieldType}" docValues="${solr.tests.numeric.dv}" precisionStep="0" omitNorms="true" positionIncrementGap="0"/>
  <fieldType name="long" class="${solr.tests.LongFieldType}" docValues="${solr.tests.numeric.dv}" precisionStep="0" omitNorms="true" positionIncrementGap="0"/>
  <fieldType name="string" class="solr.StrField" sortMissingLast="true"/>
  <fieldType name="text" class="solr.TextField">
    <analyzer>
      <tokenizer class="solr.StandardTokenizerFactory"/>
    </analyzer>
  </fieldType>
  <fieldType class="org.apache.solr.schema.SortableBinaryField" name="sortable_binary"/>
  <field name="id" type="string" indexed="true" stored="true" multiValued="false" required="false"/>
  <field name="_version_" type="long" indexed="true" stored="true" multiValued="false"/>
  <field name="signatureField" type="string" indexed="true" stored="false"/>
  <field name="text" type="text" indexed="true" stored="false"/>
  <field name="payload" type="sortable_binary" indexed="false"
         stored="true" multiValued="false" docValues="true" required="true"/>
  <dynamicField name="*_sS" type="string" indexed="false" stored="true"/>

  <!-- int varient of id, adding this here simplifies some indexing to do numeric sorting -->
  <field name="id_i" type="int" indexed="true" stored="true" multiValued="false" />
  <copyField source="id" dest="id_i" />

  <!-- catchall wildcard to help ensure we aren't breaking function sorting -->
  <dynamicField name="*" type="string" indexed="true" stored="true"/>
  <uniqueKey>id</uniqueKey>
</schema>