static SQLRETURN
ODBCFreeDesc_(ODBCDesc *desc)
{
ODBCStmt *stmt;
/* check if descriptor is implicitly allocated */
if (desc->sql_desc_alloc_type == SQL_DESC_ALLOC_AUTO) {
/* Invalid use of an automatically allocated
* descriptor handle */
addDescError(desc, "HY017", NULL, 0);
return SQL_ERROR;
}
/* all statements using this handle revert to implicitly
* allocated descriptor handles */
for (stmt = desc->Dbc->FirstStmt; stmt; stmt = stmt->next) {
if (desc == stmt->ApplRowDescr)
stmt->ApplRowDescr = stmt->AutoApplRowDescr;
if (desc == stmt->ApplParamDescr)
stmt->ApplParamDescr = stmt->AutoApplParamDescr;
}
/* Ready to destroy the desc handle */
destroyODBCDesc(desc);
return SQL_SUCCESS;
}
/*
* 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);
}
