Module: Torque::PostgreSQL::Arel

Defined in:
lib/torque/postgresql/arel/nodes.rb,
lib/torque/postgresql/arel/visitors.rb,
lib/torque/postgresql/arel/operations.rb,
lib/torque/postgresql/arel/join_source.rb,
lib/torque/postgresql/arel/select_manager.rb,
lib/torque/postgresql/arel/infix_operation.rb

Defined Under Namespace

Modules: JoinSource, Nodes, Operations, SelectManager, Visitors

Constant Summary collapse

Math = 
Module.new

Class Method Summary collapse

Class Method Details

.build_operations(operations) ⇒ Object 



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# File 'lib/torque/postgresql/arel/infix_operation.rb', line 8

def self.build_operations(operations)
  default_alias = :visit_Arel_Nodes_InfixOperation

  operations&.each do |name, operator|
    klass_name = name.to_s.camelize
    next if ::Arel::Nodes.const_defined?(klass_name)

    klass = Class.new(::Arel::Nodes::InfixOperation)
    operator = (-operator).to_sym
    klass.send(:define_method, :initialize) { |*args| super(operator, *args) }

    ::Arel::Nodes.const_set(klass_name, klass)
    visitor = :"visit_Arel_Nodes_#{klass_name}"
    ::Arel::Visitors::PostgreSQL.send(:alias_method, visitor, default_alias)

    # Don't worry about quoting here, if the right side is something that
    # doesn't need quoting, it will leave it as it is
    Math.send(:define_method, klass_name.underscore) { |other| klass.new(self, other) }
  end
end