Sequel transactions wrap exceptions instead of reraising them

Question

When using transactions in Sequel you are supposed to be able to raise an exception and have it bubble out of the transaction block.

From the Sequel documentation:

If any other exception is raised, the transaction is rolled back, and the exception is raised outside the block:

DB.transaction do # BEGIN
  raise ArgumentError
end # ROLLBACK
# ArgumentError raised

However, it seems I'm not able to catch the ArgumentError since Sequel wraps it in a Sequel::DatabaseError:

begin
  DB.transaction do
    raise ArgumentError.new('Hey')
  end
rescue => e
  puts e.inspect
  puts e.kind_of?(ArgumentError)
end

Result:

> #<Sequel::DatabaseError: ArgumentError: Hey>
> false

How can I solve this?

Answer 1

You could try using wrapped_exception as documented here and re-raise the exception.

begin
  DB.transaction do
    raise ArgumentError.new('Hey')
  end
rescue Sequel::DatabaseError => e
  raise e.wrapped_exception
end