I had tried with splitBy for numeric field, but that also did not worked for me. However I got rid of group_concat and it was all good to go.
Thanks a lot!! I really had a difficult time understanding this behavior. *Pranav Prakash* "temet nosce" On Thu, Jul 19, 2012 at 1:34 AM, Dyer, James <james.d...@ingrambook.com>wrote: > Don't you want to specify "splitBy" for the integer field too? > > Actually though, you shouldn't need to use GROUP_CONCAT and > RegexTransformer at all. DIH is designed to handle "1>many" relations > between parent and child entities by populating all the child fields as > multi-valued automatically. I guess your approach leads to a lot fewer > rows getting sent from your db to Solr though. > > James Dyer > E-Commerce Systems > Ingram Content Group > (615) 213-4311 > > > -----Original Message----- > From: Pranav Prakash [mailto:pra...@gmail.com] > Sent: Wednesday, July 18, 2012 2:38 PM > To: solr-user@lucene.apache.org > Subject: How To apply transformation in DIH for multivalued numeric field? > > I have a multivalued integer field and a multivalued string field defined > in my schema as > > <field name="community_tag_ids" > type="integer" > indexed="true" > stored="true" > multiValued="true" > omitNorms="true" /> > <field name="community_tags" > type="text" > indexed="true" > termVectors="true" > stored="true" > multiValued="true" > omitNorms="true" /> > > > The DIH entity and field defn for the same goes as > > <entity name="document" > dataSource="app" > onError="skip" > transformer="RegexTransformer" > query="..."> > > <entity name="community_tags" > transformer="RegexTransformer" > query="SELECT > group_concat(a.id SEPARATOR ',') AS community_tag_ids, > group_concat(a.title SEPARATOR ',') AS community_tags > FROM tags a JOIN tag_dets b ON a.id = b.tag_id > WHERE b.doc_id = ${document.id}" > > <field column="community_tag_ids" name="community_tag_ids"/> > <field column="community_tags" splitBy="," /> > </entity> > > </entity> > > The value for field community_tags comes correctly as an array of strings. > However the value of field community_tag_ids is not proper > > <arr name="community_tag_ids"> > <int>[B@390c0a18</int> > </arr> > > I tried chaining NumberFormatTransformer with formatStyle="number" but that > throws DataImportHandlerException: Failed to apply NumberFormat on column. > Could it be due to NULL values from database or because the value is not > proper? How do we handle NULL in this case? > > > *Pranav Prakash* > > "temet nosce" > >
