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# frozen-string-literal: true
#
# These modifies virtual row blocks so that you can pass a block
# when calling a method to change the behavior. It only exists
# for backwards compatibility with previous Sequel versions, and
# is not recommended for new applications.
#
# To load the extension:
#
# Sequel.extension :virtual_row_method_block
#
module Sequel
module SQL
class VirtualRow < BasicObject
include(Module.new do
# Handle blocks passed to methods and change the behavior.
def method_missing(m, *args, &block)
if block
if args.empty?
Function.new(m)
else
case args.shift
when :*
Function.new(m, *args).*
when :distinct
Function.new(m, *args).distinct
when :over
opts = args.shift || OPTS
f = Function.new(m, *::Kernel.Array(opts[:args]))
f = f.* if opts[:*]
f.over(opts)
else
Kernel.raise(Error, 'unsupported VirtualRow method argument used with block')
end
end
else
super
end
end
end)
end
end
end
|
