João Henrique Freitas writes:
> Some questions;
> - If custom_function(myconn->connection) need more parameters (ex:.
> for the function
> dbi_driver_specific_function(dbi_conn_get_driver(conn),
> "mysql_get_row")) like custom_function(myconn->connection,
> command_sql) is possible too, ok?
This is supposed to work too. You'll just have to declare the function
pointer appropriately, e.g.like this:
int (*custom_function)(void*, int);
Using the void* pointer is a hack as your program usually does not
have database-specific types and structures available (this would
require including the client library header which we must not do). All
other (not database engine specific) arguments can be declared as
usual.
> - In my code I have the follow structure
> struct B_DB {
> BQUEUE bq; /* queue control */
> brwlock_t lock; /* transaction lock */
> dbi_conn *db;
> dbi_result *result;
> dbi_inst instance;
> }
>
> - How I can cast the follow:
>
> dbi_conn_t *myconn = mdb->db;
>
> Because in line 560 of test_dbi.c we have:
>
> int test_custom_function(struct CONNINFO* ptr_cinfo, dbi_conn conn) {
> dbi_conn_t *myconn = conn;
>
If I understand correctly what you're trying to do here, you'll have
to change "dbi_conn *db" to "dbi_conn db". dbi_conn is
typedef'd as a pointer which we can cast to the explicit pointer
dbi_conn_t *myconn.
regards,
Markus
--
Markus Hoenicka
[EMAIL PROTECTED]
(Spam-protected email: replace the quadrupeds with "mhoenicka")
http://www.mhoenicka.de
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