On 8/8/2016 12:48 PM, lukes wrote: > 1) In SOLR, there is functionality of copyfields, which dynamically > copies one field value to destination field but without actually > storing it in second time. Does Lucene provides anything directly out > of the box ? If i have to implement such feature, then i need to > manually copy the value from 1 field and create new field out of it ?
I'm rather clueless about writing Lucene code, so I have no idea on your other two questions. I do know a little about Solr, so I will tackle this one. Where did you get the idea that the info is not stored a second time when copyField is used in Solr? This is not correct. All copyField does is copy the input value of the source field to the input value of the destination field. Once the copyField is done by Solr, there is no link of any kind in the Lucene index between the source and destination fields. Solr behaves exactly as it would if you didn't have copyField and sent the same information twice -- once in the source field and once in the destination field. If the destination field is stored, then the data gets stored, regardless of whether the source is also stored. If the destination field is indexed, then the info is indexed according to the fieldType on the destination field. Same with docValues, and any other setting that fields can use. Thanks, Shawn --------------------------------------------------------------------- To unsubscribe, e-mail: dev-unsubscr...@lucene.apache.org For additional commands, e-mail: dev-h...@lucene.apache.org
