Extending Ruby DBI

module DBI
    class << self
        def connect_transaction(driver_url, user=nil, auth=nil, params=nil, &block)
            x=connect(driver_url, user, auth, params)
            begin
                x.transaction(&block)
            ensure
                x.disconnect
            end
        end
    end
    class DatabaseHandle
        def execute_immediate(stmt,*bindvars,&block)
            sth=execute(stmt,*bindvars)
            ret=0
            begin
                if block then ret=sth.map(&block).count end
            ensure
                sth.finish
            end
            ret
        end
    end
end