: And it might make sense to have a "multi-value flattening" attribute for Solr : itself rather than in SolrCell.
Coming in 4.0... https://builds.apache.org/view/G-L/view/Lucene/job/Solr-trunk/javadoc/org/apache/solr/update/processor/ConcatFieldUpdateProcessorFactory.html ----DOC---- Concatenates multiple values for fields matching the specified conditions using a configurable delimiter which defaults to ", ". By default, this processor concatenates the values for any field name which according to the schema is multiValued="false" and uses TextField or StrField ----DOC---- -Hoss
