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Diffstat (limited to 'lib/arel/algebra/relations/operations/order.rb')
-rw-r--r-- | lib/arel/algebra/relations/operations/order.rb | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/lib/arel/algebra/relations/operations/order.rb b/lib/arel/algebra/relations/operations/order.rb new file mode 100644 index 0000000000..a589b56997 --- /dev/null +++ b/lib/arel/algebra/relations/operations/order.rb @@ -0,0 +1,18 @@ +module Arel + class Order < Compound + attributes :relation, :orderings + deriving :== + + def initialize(relation, *orderings, &block) + @relation = relation + @orderings = (orderings + arguments_from_block(relation, &block)) \ + .collect { |o| o.bind(relation) } + end + + # TESTME + def orders + # QUESTION - do we still need relation.orders ? + (orderings + relation.orders).collect { |o| o.bind(self) }.collect { |o| o.to_ordering } + end + end +end |