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module Graticule #:nodoc:
module Geocoder #:nodoc:
class Multi
# The Multi geocoder allows you to use multiple geocoders in succession.
#
# geocoder = Graticule.service(:multi).new(
# Graticule.service(:google).new("api_key"),
# Graticule.service(:yahoo).new("api_key"),
# )
# geocoder.locate '49423' # <= tries geocoders in succession
#
# The Multi geocoder will try the geocoders in order if a Graticule::AddressError
# is raised. You can customize this behavior by passing in a block to the Multi
# geocoder. For example, to try the geocoders until one returns a result with a
# high enough precision:
#
# geocoder = Graticule.service(:multi).new(geocoders) do |result|
# [:address, :street].include?(result.precision)
# end
#
# Geocoders will be tried in order until the block returned true for one of the results
#
def initialize(*geocoders, &acceptable)
@acceptable = acceptable || lambda { true }
@geocoders = geocoders.flatten
end
def locate(address)
last_error = nil
@geocoders.each do |geocoder|
begin
result = geocoder.locate address
return result if @acceptable.call(result)
rescue Error => e
last_error = e
rescue Errno::ECONNREFUSED
logger.error("Connection refused to #{service}")
end
end
raise last_error || AddressError.new("Couldn't find '#{address}' with any of the services")
end
end
end
end
Version data entries
15 entries across 15 versions & 6 rubygems