First, A Workflow Model
class Queue
def initialize(name) ... end
def to_sql ... end
end
class Alternative
def initialize(code, next_step) ... end
def to_sql ... end
end
class Step
def initialize(queue) ... end
def add(alternative) ... end
def to_sql ... end
end
class Route
def initialize(name) ... end
def add(step) ... end
def to_sql ... end
end
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