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Versions: 36
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Stored size: 1.16 KB
Contents
begin
require 'geohash'
rescue LoadError => e
require 'pr_geohash'
end
module Sunspot
module Query
class Geo
MAX_PRECISION = 12
DEFAULT_PRECISION = 7
DEFAULT_PRECISION_FACTOR = 16.0
def initialize(field, lat, lng, options)
@field, @options = field, options
@geohash = GeoHash.encode(lat.to_f, lng.to_f, MAX_PRECISION)
end
def to_params
{ :q => to_boolean_query }
end
def to_subquery
"(#{to_boolean_query})"
end
private
def to_boolean_query
queries = []
MAX_PRECISION.downto(precision) do |i|
star = i == MAX_PRECISION ? '' : '*'
precision_boost = Util.format_float(
boost * precision_factor ** (i-MAX_PRECISION).to_f, 3)
queries << "#{@field.indexed_name}:#{@geohash[0, i]}#{star}^#{precision_boost}"
end
queries.join(' OR ')
end
def precision
@options[:precision] || DEFAULT_PRECISION
end
def precision_factor
@options[:precision_factor] || DEFAULT_PRECISION_FACTOR
end
def boost
@options[:boost] || 1.0
end
end
end
end
Version data entries
36 entries across 36 versions & 9 rubygems