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29 lines
837 B
Ruby
29 lines
837 B
Ruby
require 'arel/visitors/to_sql'
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require 'arel/visitors/postgresql'
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require 'arel/visitors/mysql'
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require 'arel/visitors/oracle'
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require 'arel/visitors/join_sql'
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require 'arel/visitors/order_clauses'
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require 'arel/visitors/dot'
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module Arel
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module Visitors
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VISITORS = {
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'postgresql' => Arel::Visitors::PostgreSQL,
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'mysql' => Arel::Visitors::MySQL,
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'mysql2' => Arel::Visitors::MySQL,
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'oracle_enhanced' => Arel::Visitors::Oracle,
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}
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ENGINE_VISITORS = Hash.new do |hash, engine|
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pool = engine.connection_pool
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adapter = pool.spec.config[:adapter]
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hash[engine] = (VISITORS[adapter] || Visitors::ToSql).new(engine)
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end
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def self.visitor_for engine
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ENGINE_VISITORS[engine]
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end
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class << self; alias :for :visitor_for; end
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end
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end
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