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module Arel
module Sql
class Christener
def initialize
# FIXME: this exists because all objects hash the same. :'(
@used_names = Hash.new(0)
@relation_names = Hash.new do |hash, relation|
name = relation.table_alias ? relation.table_alias : relation.name
@used_names[name] += 1
hash[relation] = name + (@used_names[name] > 1 ? "_#{@used_names[name]}" : '')
end
end
def name_for(relation)
@relation_names[relation.table]
end
end
end
end
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