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require 'thinking_sphinx/deltas/default_delta'
require 'thinking_sphinx/deltas/delayed_delta'
require 'thinking_sphinx/deltas/datetime_delta'
module ThinkingSphinx
module Deltas
def self.parse(index, options)
delta_option = options.delete(:delta)
case delta_option
when TrueClass, :default
DefaultDelta.new index, options
when :delayed
DelayedDelta.new index, options
when :datetime
DatetimeDelta.new index, options
when FalseClass, nil
nil
else
if delta_option.ancestors.include?(ThinkingSphinx::Deltas::DefaultDelta)
delta_option.new index, options
else
raise "Unknown delta type"
end
end
end
end
end
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