/*
* Destroys the ODBCDbc object including its own managed data.
*
* Precondition: dbc must be valid, inactive (not connected) and
* no ODBCStmt (or ODBCDesc) objects may refer to this dbc.
* Postcondition: dbc is completely destroyed, dbc handle is become invalid.
*/
void
destroyODBCDbc(ODBCDbc *dbc)
{
assert(isValidDbc(dbc));
assert(!dbc->Connected);
assert(dbc->FirstStmt == NULL);
/* first set this object to invalid */
dbc->Type = 0;
/* remove this dbc from the env */
assert(dbc->Env);
assert(dbc->Env->FirstDbc);
{
/* search for this dbc in the list */
ODBCDbc *tmp_dbc = (ODBCDbc *) dbc->Env->FirstDbc;
ODBCDbc *prv_dbc = NULL;
while ((tmp_dbc != NULL) && (tmp_dbc != dbc)) {
prv_dbc = tmp_dbc;
tmp_dbc = tmp_dbc->next;
}
assert(tmp_dbc == dbc); /* we must have found it */
/* now remove it from the linked list */
if (prv_dbc != NULL) {
prv_dbc->next = dbc->next;
} else {
dbc->Env->FirstDbc = dbc->next;
}
}
/* cleanup own managed data */
deleteODBCErrorList(&dbc->Error);
if (dbc->dsn)
free(dbc->dsn);
if (dbc->uid)
free(dbc->uid);
if (dbc->pwd)
free(dbc->pwd);
if (dbc->host)
free(dbc->host);
if (dbc->dbname)
free(dbc->dbname);
free(dbc);
}
/*
* Destroys the ODBCStmt object including its own managed data.
*
* Precondition: stmt must be valid.
* Postcondition: stmt is completely destroyed, stmt handle is invalid.
*/
void
destroyODBCStmt(ODBCStmt *stmt)
{
ODBCStmt **stmtp;
assert(isValidStmt(stmt));
/* first set this object to invalid */
stmt->Type = 0;
/* remove this stmt from the dbc */
assert(stmt->Dbc);
assert(stmt->Dbc->FirstStmt);
/* search for stmt in linked list */
stmtp = &stmt->Dbc->FirstStmt;
while (*stmtp && *stmtp != stmt)
stmtp = &(*stmtp)->next;
/* stmtp points to location in list where stmt is found */
assert(*stmtp == stmt); /* we must have found it */
/* now remove it from the linked list */
*stmtp = stmt->next;
/* cleanup own managed data */
deleteODBCErrorList(&stmt->Error);
destroyODBCDesc(stmt->ImplParamDescr);
destroyODBCDesc(stmt->ImplRowDescr);
destroyODBCDesc(stmt->AutoApplParamDescr);
destroyODBCDesc(stmt->AutoApplRowDescr);
if (stmt->hdl)
mapi_close_handle(stmt->hdl);
free(stmt);
}
