[SOLR-3670] CountFieldValuesUpdateProcessorFactory

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 4.0, 6.0
• Assignee: Chris M. Hostetter
• Reporter: Chris M. Hostetter
• Created: 24/Jul/12 18:13
• Updated: 09/May/16 18:45
• Resolved: 14/Aug/12 00:43

Description

Common usecase is to want to search on the number of values in a multivalued field.

we should add a FieldMutationUpdateProcessorFactory that makes this easy...

<processor class="solr.CloneFieldUpdateProcessorFactory">
 <str name="source">category</str>
 <str name="dest">number_of_categories_i</str>
</processor>
<processor class="solr.CountFieldValuesUpdateProcessorFactory">
 <str name="fieldName">number_of_categories_i</str>
</processor