danmcclain/postgres_ext

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lib/postgres_ext/arel.rb

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gdep = Gem::Dependency.new('activerecord', '~> 4.2.0')
ar_version_cutoff = gdep.matching_specs.sort_by(&:version).last

require 'postgres_ext/arel/nodes'
if ar_version_cutoff
  require 'postgres_ext/arel/4.2/predications'
  require 'postgres_ext/arel/4.2/visitors'
else
  require 'postgres_ext/arel/4.1/predications'
  require 'postgres_ext/arel/4.1/visitors'
end