lib/postgres_ext/arel/4.1/visitors/postgresql.rb
require 'arel/visitors/postgresql'
module Arel
module Visitors
class PostgreSQL
private
def visit_Array o, a
column = case a.try(:relation)
when Arel::Nodes::TableAlias, NilClass
# noop Prevent from searching for table alias name in schema cache
# which won't exist for aliased table when used with Single Table
# Inheritance. see dockyard/postgres_ext#154
else
cache = a.relation.engine.connection.schema_cache
if cache.table_exists? a.relation.name
cache.columns(a.relation.name).find { |col| col.name == a.name.to_s }
end
end
if column && column.respond_to?(:array) && column.array
quoted o, a
else
o.empty? ? 'NULL' : o.map { |x| visit x }.join(', ')
end
end
def visit_Arel_Nodes_Contains o, a = nil
left_column = o.left.relation.engine.columns.find { |col| col.name == o.left.name.to_s }
if left_column && (left_column.type == :hstore || (left_column.respond_to?(:array) && left_column.array))
"#{visit o.left, a} @> #{visit o.right, o.left}"
else
"#{visit o.left, a} >> #{visit o.right, o.left}"
end
end
def visit_Arel_Nodes_ContainedWithin o, a = nil
"#{visit o.left, a} << #{visit o.right, o.left}"
end
def visit_Arel_Nodes_ContainedWithinEquals o, a = nil
"#{visit o.left, a} <<= #{visit o.right, o.left}"
end
def visit_Arel_Nodes_ContainsArray o, a = nil
"#{visit o.left, a} @> #{visit o.right, o.left}"
end
def visit_Arel_Nodes_ContainedInArray o, a = nil
"#{visit o.left, a} <@ #{visit o.right, o.left}"
end
def visit_Arel_Nodes_ContainsHStore o, a = nil
"#{visit o.left, a} @> #{visit o.right, o.left}"
end
def visit_Arel_Nodes_ContainedInHStore o, a = nil
"#{visit o.left, a} <@ #{visit o.right, o.left}"
end
def visit_Arel_Nodes_ContainsINet o, a = nil
"#{visit o.left, a} >> #{visit o.right, o.left}"
end
def visit_Arel_Nodes_ContainsEquals o, a = nil
"#{visit o.left, a} >>= #{visit o.right, o.left}"
end
def visit_Arel_Nodes_Overlap o, a = nil
"#{visit o.left, a} && #{visit o.right, o.left}"
end
def visit_IPAddr value, a = nil
"'#{value.to_s}/#{value.instance_variable_get(:@mask_addr).to_s(2).count('1')}'"
end
end
end
end