Simple MySQL-C ORM - 简化C语言访问MySQL

#include <db.h>
#include <stdio.h>
#include <string.h>
#include <time.h>

int main (int argc, char **argv)
{
int ret;
MYSQL global_mysql;
MYSQL *m;

db_ex_customer *cust1;
db_ex_item *item1, *item2;

mysql_init (& global_mysql);

/*
* connect to MySQL as usual
*/
m = mysql_real_connect (& global_mysql, "localhost", "root", "", "ex1", 3036, NULL, 0);

/*
* pass the MySQL connection to function, that initializes the "ORM"
*/
ret = db_init (& global_mysql);

/*
* the *__new method creates empty structure
*/
cust1 = db_ex_customer__new ();
/*
* setting the structure attribute with allocated string,
* it will be freed during call of *__free method
*/
cust1->name = strdup ("alesak");

/*
* this methods inserts the structure into according table.
* If it has serial field, its value is reflected into structure
*/
ret = db_ex_customer__insert (cust1);

item1 = db_ex_item__new ();
item1->customer_id = cust1->id;
item1->itemname = strdup ("simple orm");

ret = db_ex_item__insert (item1);

item2 = db_ex_item__new ();
item2->customer_id = cust1->id;
item2->itemname = strdup ("advanced orm");

ret = db_ex_item__insert (item2);

db_ex_customer__free (cust1);
db_ex_item__free (item1);
db_ex_item__free (item2);

return (0);