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Contents
module MongoModel
class MongoOrder
attr_reader :clauses
def initialize(*clauses)
@clauses = clauses
end
def to_a
clauses
end
def to_s
clauses.map { |c| c.to_s }.join(', ')
end
def to_sort(model)
clauses.map { |c| c.to_sort(model.properties[c.field]) }
end
def ==(other)
other.is_a?(self.class) && clauses == other.clauses
end
def reverse
self.class.new(*clauses.map { |c| c.reverse })
end
def self.parse(order)
case order
when MongoOrder
order
when Clause
new(order)
when Symbol
new(Clause.new(order))
when String
new(*order.split(',').map { |c| Clause.parse(c) })
when Array
new(*order.map { |c| Clause.parse(c) })
end
end
class Clause
attr_reader :field, :order
def initialize(field, order=:ascending)
@field, @order = field.to_sym, order.to_sym
end
def to_s
"#{field} #{order}"
end
def to_sort(property)
[property ? property.as : field.to_s, order]
end
def reverse
self.class.new(field, order == :ascending ? :descending : :ascending)
end
def ==(other)
other.is_a?(self.class) && field == other.field && order == other.order
end
def self.parse(clause)
case clause
when Clause
clause
when String, Symbol
field, order = clause.to_s.strip.split(/ /)
new(field, order =~ /^desc/i ? :descending : :ascending)
end
end
end
end
end
Version data entries
26 entries across 26 versions & 1 rubygems