[LUCENE-5118] spatial strategy- add multiplier to makeDistanceValueSource()

• Type: New Feature
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 4.5, 6.0
• Component/s: modules/spatial
• Lucene Fields: New
• Assignee: David Smiley
• Reporter: David Smiley
• Created: 16/Jul/13 17:18
• Updated: 28/Aug/22 13:50
• Resolved: 24/Jul/13 17:26

Description

SpatialStrategy has this abstract method:

/**
   * Make a ValueSource returning the distance between the center of the
   * indexed shape and {@code queryPoint}.  If there are multiple indexed shapes
   * then the closest one is chosen.
   */
  public abstract ValueSource makeDistanceValueSource(Point queryPoint);

I'd like to add another argument double multiplier that is internally multiplied to the result per document. It's a convenience over having the user wrap this with another ValueSource, and it'd be faster too. Typical usage would be to add a degrees-to-kilometers multiplier.

The current method could be marked deprecated with a default implementation that invokes the new one with a 1.0 multiplier.

Issue Links

• blocks: SOLR-2345 Extend geodist() to support MultiValued lat long field