[SOLR-10292] Add cartesian Streaming Expression to build cartesian products from multi-value fields and text fields

• Type: New Feature
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 6.6
• Assignee: Unassigned
• Reporter: Joel Bernstein
• Created: 15/Mar/17 16:51
• Updated: 21/Nov/19 00:41
• Resolved: 20/May/17 01:11

Description

Currently all the Streaming Expression such as rollups, intersections, fetch etc, work on single value fields. The cartesian expression would create a stream of tuples from a single tuple with a multi-value field. This would allow multi-valued fields to be operated on by the wider library of Streaming Expression.

For example a single tuple with a multi-valued field:

id: 1
author: [Jim, Jack, Steve]

Would be transformed in the following three tuples:

id:1
author:Jim

id:1
author:Jack

id:1
author:Steve