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From Zoltan Kovacs back in April (sorry for the delay Zoltan!):

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I modified the current ODBC driver for

* referential integrity error reporting,
* SELECT in transactions and
* disabling autocommit.

I tested these changes with Borland C++ Builder -> ODBCExpress ->
WinODBC driver (DLL) -> Postgres 7.0beta1 and Borland C++ Builder -> BDE ->
WinODBC driver (DLL) -> Postgres 7.0beta1. The patch is based on snapshot of
22th April (I don't think that someone has modified it since that: Byron
hasn't gave any sign of living for about a month and I didn't find any
comments about the ODBC driver on the list).
This commit is contained in:
Thomas G. Lockhart
2000-10-25 14:15:49 +00:00
parent 48f0490809
commit c404d91c0b
3 changed files with 47 additions and 8 deletions
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23
src/interfaces/odbc/statement.c
View File

@@ -748,8 +748,14 @@ QueryInfo qi;
/* Begin a transaction if one is not already in progress */
/* The reason is because we can't use declare/fetch cursors without
starting a transaction first.
A transaction should be begun if and only if
we use declare/fetch and the statement is SELECT.
We assume that the Postgres backend has an autocommit
feature as default. (Zoltan Kovacs, 04/26/2000)
*/
if ( ! self->internal && ! CC_is_in_trans(conn) && (globals.use_declarefetch || STMT_UPDATE(self))) {
// if ( ! self->internal && ! CC_is_in_trans(conn) && (globals.use_declarefetch || STMT_UPDATE(self))) {
if ( ! self->internal && ! CC_is_in_trans(conn) && globals.use_declarefetch && self->statement_type == STMT_TYPE_SELECT) {
mylog(" about to begin a transaction on statement = %u\n", self);
res = CC_send_query(conn, "BEGIN", NULL);
@@ -826,11 +832,14 @@ QueryInfo qi;
self->result = CC_send_query(conn, self->stmt_with_params, NULL);
/* If we are in autocommit, we must send the commit. */
if ( ! self->internal && CC_is_in_autocommit(conn) && STMT_UPDATE(self)) {
/* No, we shouldn't. Postgres backend does the
autocommit if neccessary. (Zoltan, 04/26/2000)
*/
/* if ( ! self->internal && CC_is_in_autocommit(conn) && STMT_UPDATE(self)) {
res = CC_send_query(conn, "COMMIT", NULL);
QR_Destructor(res);
CC_set_no_trans(conn);
}
}*/
}
@@ -889,10 +898,12 @@ QueryInfo qi;
if (self->errornumber == STMT_OK)
return SQL_SUCCESS;
else if (self->errornumber == STMT_INFO_ONLY)
return SQL_SUCCESS_WITH_INFO;
else {
// Modified, 04/29/2000, Zoltan
if (self->errornumber == STMT_INFO_ONLY)
self->errormsg = "Error while executing the query (non-fatal)";
else
self->errormsg = "Unknown error";
SC_log_error(func, "", self);
return SQL_ERROR;
}