README.bk

/* we package */

PROBLEMS:
    1. have you ever been in sitution that use explode(",",$str) for many time to convert csv string into array ?
    2. have you just find that when you write an array ($a,$b,$c) into mysql, you need a lot of simulate lines to be write ?
    3. say you are faceing problem 2, then you find an addition log need to be add: monitor the input/output of mysql , what the fuck ...

SOLUTION:
    we abstract these oprations into some simple interface , like IO <read, write, close, open, flush, pop> ,  IoControl<set_attr, get_attr, del_attr>, Map<check, mapto>   
    here is the used example:
        
        class Job implements IJob {

            public function run(){

                /*  now  "io" is a mysql interface */

                van_link("io", new IoMysql("host", "port", "user", "passwd"));

                van_set_state("io", "connected");
                $something = van_read("io", "select something from db");
                update($something);
                van_write("io", "update $something into db");
                van_set_state("io", "closed");
    
                //van_unlink("io"); // here we will auto unlink whenever no link points to IoMySql obj



                /*  now "io" is a map interface */

                van_link("io", new MapCsv2Arr);
                $csv_arr = van_map("io", file_get_contents("example.csv"));

                

                van_link("map", "io");
                /*  now "io" is a log file , and the "map" becomes to the map*/

                van_link("io", IoLogfile("/tmp/log"));
                van_write("io", json_encode(van_map("map", file_get_contents("example.csv")));
            }
        }

        van_link("job_01", new Job);
        van_run("job_01","some params");
        van_unlink("job_01");