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

["David Smiley (JIRA)" <ji...@apache.org>]

David Smiley created LUCENE-5118:
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             Summary: spatial strategy- add multiplier to makeDistanceValueSource()
                 Key: LUCENE-5118
                 URL: https://issues.apache.org/jira/browse/LUCENE-5118
             Project: Lucene - Core
          Issue Type: New Feature
          Components: modules/spatial
            Reporter: David Smiley
            Assignee: David Smiley
             Fix For: 4.5


SpatialStrategy has this abstract method:
{code}
/**
   * 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);
{code}

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.

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