Why do the db transaction methods snuff exceptions?

rubyonrails-core
1

While browsing ActiveRecord::ConnectionAdapters::MysqlAdapter (Rails 1.2.5), I see:

      def commit_db_transaction #:nodoc:         execute "COMMIT"       rescue Exception         # Transactions aren't supported       end

      def rollback_db_transaction #:nodoc:         execute "ROLLBACK"       rescue Exception         # Transactions aren't supported       end

Why does Rails snuff these exceptions? Why not raise a TransactionsNotSupportedException? I would think it very important to know if a COMMIT or ROLLBACK fails.

Thanks,

Brian Hartin