def self.match(method)
finder = :first
bang = false
instantiator = nil
case method.to_s
when /^find_(all_|last_)?by_([_a-zA-Z]\w*)$/
finder = :last if $1 == 'last_'
finder = :all if $1 == 'all_'
names = $2
when /^find_by_([_a-zA-Z]\w*)\!$/
bang = true
names = $1
when /^find_or_create_by_([_a-zA-Z]\w*)\!$/
bang = true
instantiator = :create
names = $1
when /^find_or_(initialize|create)_by_([_a-zA-Z]\w*)$/
instantiator = $1 == 'initialize' ? :new : :create
names = $2
else
return nil
end
new(finder, instantiator, bang, names.split('_and_'))
end