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# frozen_string_literal: true
module Arel # :nodoc: all
###
# Methods for creating various nodes
module FactoryMethods
def create_true
Arel::Nodes::True.new
end
def create_false
Arel::Nodes::False.new
end
def create_table_alias(relation, name)
Nodes::TableAlias.new(relation, name)
end
def create_join(to, constraint = nil, klass = Nodes::InnerJoin)
klass.new(to, constraint)
end
def create_string_join(to)
create_join to, nil, Nodes::StringJoin
end
def create_and(clauses)
Nodes::And.new clauses
end
def create_on(expr)
Nodes::On.new expr
end
def grouping(expr)
Nodes::Grouping.new expr
end
###
# Create a LOWER() function
def lower(column)
Nodes::NamedFunction.new "LOWER", [Nodes.build_quoted(column)]
end
def coalesce(*exprs)
Nodes::NamedFunction.new "COALESCE", exprs
end
end
end
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