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Versions: 50
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Contents
module Appfuel
module Repository
class OrderExpr < Expr
def self.build(data)
return [data] if data.instance_of?(self)
data = [data] if data.is_a?(String)
unless data.respond_to?(:each)
fail "order must be a string or implement :each"
end
results = []
data.each do |item|
item = parse_order_string(item) if item.is_a?(String)
if item.instance_of?(self)
results << item
next
end
if !item.is_a?(Hash)
fail "order array must be a list of strings or hashes"
end
domain_attr, dir = item.first
results << self.new(domain_attr, dir)
end
results
end
def initialize(domain_attr, op = nil)
op ||= 'asc'
super(domain_attr, op, nil)
@op = @op.downcase
unless ['asc', 'desc'].include?(@op)
fail "order direction must be either asc or desc"
end
end
def to_s
"#{attr_list.join('.')} #{op}"
end
private
def self.parse_order_string(str)
str, dir = str.split(' ')
dir = 'asc' if dir.nil?
{str => dir.downcase}
end
end
end
end
Version data entries
50 entries across 50 versions & 1 rubygems