low_card_tables.gemspec

# -*- encoding: utf-8 -*-
$:.push File.expand_path("../lib", __FILE__)
require "low_card_tables/version"

Gem::Specification.new do |s|
  s.name        = "low_card_tables"
  s.version     = LowCardTables::VERSION
  s.authors     = ["Andrew Geweke"]
  s.email       = ["andrew@geweke.org"]
  s.homepage    = "https://github.com/ageweke/low_card_tables"
  s.summary     = %q{"Bitfields for ActiveRecord": instead of storing multiple columns with low cardinality (few distinct values) directly in a table, which results in performance and maintainability problems, break them out into a separate table with almost zero overhead. Trivially add new columns without migrating a main, enormous table. Query on combinations of values very efficiently.}
  s.description = %q{"Bitfields for ActiveRecord": store low-cardinality columns in a separate table for vastly more flexibility and better performance.}
  s.license     = "MIT"

  s.files         = `git ls-files`.split("\n")
  s.test_files    = `git ls-files -- {test,spec,features}/*`.split("\n")
  s.executables   = `git ls-files -- bin/*`.split("\n").map{ |f| File.basename(f) }
  s.require_paths = ["lib"]

  s.add_development_dependency "bundler"
  s.add_development_dependency "rake"
  s.add_development_dependency "rspec", "~> 2.14"

  ar_version = ENV['LOW_CARD_TABLES_AR_TEST_VERSION']
  ar_version = ar_version.strip if ar_version

  version_spec = case ar_version
  when nil then [ ">= 3.0", "<= 4.99.99" ]
  when 'master' then nil
  else [ "=#{ar_version}" ]
  end

  if version_spec
    s.add_dependency("activerecord", *version_spec)
  end

  s.add_dependency "activesupport", ">= 3.0", "<= 4.99.99"

  ar_import_version = case ar_version
  when nil then nil
  when /^4\.2\./ then '~> 0.7.0'
  when 'master', /^4\.0\./, /^4\.1\./ then '~> 0.4.1'
  when /^3\.0\./ then '~> 0.2.11'
  when /^3\.1\./, /^3\.2\./ then '~> 0.3.1'
  else raise "Don't know what activerecord-import version to require for activerecord version #{ar_version.inspect}!"
  end

  if ar_import_version
    s.add_dependency("activerecord-import", ar_import_version)
  else
    s.add_dependency("activerecord-import")
  end

  # i18n released an 0.7.0 that's incompatible with Ruby 1.8.
  if RUBY_VERSION =~ /^1\.8\./
    s.add_development_dependency 'i18n', '< 0.7.0'
  end

  require File.expand_path(File.join(File.dirname(__FILE__), 'spec', 'low_card_tables', 'helpers', 'database_helper'))
  database_gem_name = LowCardTables::Helpers::DatabaseHelper.maybe_database_gem_name

  # Ugh. Later versions of the 'mysql2' gem are incompatible with AR 3.0.x; so, here, we explicitly trap that case
  # and use an earlier version of that Gem.
  if database_gem_name && database_gem_name == 'mysql2' && ar_version && ar_version =~ /^3\.0\./
    s.add_development_dependency(database_gem_name, '~> 0.2.0')
  # The 'pg' gem removed Ruby 1.8 compatibility as of 0.18.
  elsif database_gem_name && database_gem_name == 'pg' && RUBY_VERSION =~ /^1\.8\./
    s.add_development_dependency(database_gem_name, '< 0.18.0')
  else
    s.add_development_dependency(database_gem_name)
  end
end