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Commit6852741

Browse files
author
Hiroshi Inoue
committed
[2002-03-28]
1) Prepare to separate 4 kinds of Descriptor handles.2) Detect the transaction status more naturally.3) Improve Parse Statement functionality for the use of updatable cursors.4) Improve updatable cursors.5) Implement SQLGetDescField() and improve SQLColAttribute().6) etc.
1 parente6774dc commit6852741

40 files changed

+2696
-1291
lines changed

‎src/interfaces/odbc/bind.c

Lines changed: 234 additions & 113 deletions
Large diffs are not rendered by default.

‎src/interfaces/odbc/bind.h

Lines changed: 4 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -50,6 +50,9 @@ struct ParameterInfoClass_
5050
};
5151

5252
BindInfoClass *create_empty_bindings(int num_columns);
53-
voidextend_bindings(StatementClass *stmt, int num_columns);
53+
voidextend_column_bindings(ARDFields *opts, int num_columns);
54+
voidreset_a_column_binding(ARDFields *opts, int icol);
55+
voidextend_parameter_bindings(APDFields *opts, int num_columns);
56+
voidreset_a_parameter_binding(APDFields *opts, int ipar);
5457

5558
#endif

‎src/interfaces/odbc/connection.c

Lines changed: 61 additions & 28 deletions
Original file line numberDiff line numberDiff line change
@@ -298,8 +298,8 @@ CC_Constructor()
298298
/* Statements under this conn will inherit these options */
299299

300300
InitializeStatementOptions(&rv->stmtOptions);
301-
302-
301+
InitializeARDFields(&rv->ardOptions);
302+
InitializeAPDFields(&rv->apdOptions);
303303
}
304304
return rv;
305305
}
@@ -381,8 +381,6 @@ CC_begin(ConnectionClass *self)
381381
{
382382
ret = QR_command_successful(res);
383383
QR_Destructor(res);
384-
if (ret)
385-
CC_set_in_trans(self);
386384
}
387385
else
388386
return FALSE;
@@ -403,9 +401,6 @@ CC_commit(ConnectionClass *self)
403401
{
404402
QResultClass *res = CC_send_query(self, "COMMIT", NULL, CLEAR_RESULT_ON_ABORT);
405403
mylog("CC_commit: sending COMMIT!\n");
406-
407-
CC_set_no_trans(self);
408-
409404
if (res != NULL)
410405
{
411406
ret = QR_command_successful(res);
@@ -429,9 +424,6 @@ CC_abort(ConnectionClass *self)
429424
{
430425
QResultClass *res = CC_send_query(self, "ROLLBACK", NULL, CLEAR_RESULT_ON_ABORT);
431426
mylog("CC_abort: sending ABORT!\n");
432-
433-
CC_set_no_trans(self);
434-
435427
if (res != NULL)
436428
QR_Destructor(res);
437429
else
@@ -1118,6 +1110,23 @@ CC_get_error(ConnectionClass *self, int *number, char **message)
11181110
}
11191111

11201112

1113+
voidCC_on_commit(ConnectionClass *conn, BOOL set_no_trans)
1114+
{
1115+
if (CC_is_in_trans(conn))
1116+
{
1117+
if (set_no_trans)
1118+
CC_set_no_trans(conn);
1119+
}
1120+
}
1121+
voidCC_on_abort(ConnectionClass *conn, BOOL set_no_trans)
1122+
{
1123+
if (CC_is_in_trans(conn))
1124+
{
1125+
if (set_no_trans)
1126+
CC_set_no_trans(conn);
1127+
}
1128+
}
1129+
11211130
/*
11221131
*The "result_in" is only used by QR_next_tuple() to fetch another group of rows into
11231132
*the same existing QResultClass (this occurs when the tuple cache is depleted and
@@ -1134,7 +1143,8 @@ CC_send_query(ConnectionClass *self, char *query, QueryInfo *qi, UDWORD flag)
11341143
*retres = NULL,
11351144
*res = NULL;
11361145
BOOLclear_result_on_abort = ((flag & CLEAR_RESULT_ON_ABORT) != 0),
1137-
create_keyset = ((flag & CREATE_KEYSET) != 0);
1146+
create_keyset = ((flag & CREATE_KEYSET) != 0),
1147+
issue_begin = ((flag & GO_INTO_TRANSACTION) != 0 && !CC_is_in_trans(self));
11381148
charswallow,
11391149
*wq;
11401150
intid;
@@ -1146,7 +1156,8 @@ CC_send_query(ConnectionClass *self, char *query, QueryInfo *qi, UDWORD flag)
11461156
query_completed = FALSE,
11471157
before_64 = PG_VERSION_LT(self, 6.4),
11481158
aborted = FALSE,
1149-
used_passed_result_object = FALSE;
1159+
used_passed_result_object = FALSE,
1160+
set_no_trans;
11501161

11511162
/* ERROR_MSG_LENGTH is suffcient */
11521163
static char msgbuffer[ERROR_MSG_LENGTH + 1];
@@ -1173,7 +1184,7 @@ CC_send_query(ConnectionClass *self, char *query, QueryInfo *qi, UDWORD flag)
11731184
{
11741185
self->errornumber = CONNECTION_COULD_NOT_SEND;
11751186
self->errormsg = "Could not send Query to backend";
1176-
CC_set_no_trans(self);
1187+
CC_on_abort(self, TRUE);
11771188
return NULL;
11781189
}
11791190

@@ -1182,18 +1193,20 @@ CC_send_query(ConnectionClass *self, char *query, QueryInfo *qi, UDWORD flag)
11821193
{
11831194
self->errornumber = CONNECTION_COULD_NOT_SEND;
11841195
self->errormsg = "Could not send Query to backend";
1185-
CC_set_no_trans(self);
1196+
CC_on_abort(self, TRUE);
11861197
return NULL;
11871198
}
11881199

1200+
if (issue_begin)
1201+
SOCK_put_n_char(sock, "begin;", 6);
11891202
SOCK_put_string(sock, query);
11901203
SOCK_flush_output(sock);
11911204

11921205
if (SOCK_get_errcode(sock) != 0)
11931206
{
11941207
self->errornumber = CONNECTION_COULD_NOT_SEND;
11951208
self->errormsg = "Could not send Query to backend";
1196-
CC_set_no_trans(self);
1209+
CC_on_abort(self, TRUE);
11971210
return NULL;
11981211
}
11991212

@@ -1230,7 +1243,7 @@ CC_send_query(ConnectionClass *self, char *query, QueryInfo *qi, UDWORD flag)
12301243
self->errormsg = "No response from the backend";
12311244

12321245
mylog("send_query: 'id' - %s\n", self->errormsg);
1233-
CC_set_no_trans(self);
1246+
CC_on_abort(self, TRUE);
12341247
ReadyToReturn = TRUE;
12351248
retres = NULL;
12361249
break;
@@ -1254,7 +1267,7 @@ CC_send_query(ConnectionClass *self, char *query, QueryInfo *qi, UDWORD flag)
12541267
self->errornumber = CONNECTION_NO_RESPONSE;
12551268
self->errormsg = "No response from backend while receiving a portal query command";
12561269
mylog("send_query: 'C' - %s\n", self->errormsg);
1257-
CC_set_no_trans(self);
1270+
CC_on_abort(self, TRUE);
12581271
ReadyToReturn = TRUE;
12591272
retres = NULL;
12601273
}
@@ -1270,6 +1283,24 @@ CC_send_query(ConnectionClass *self, char *query, QueryInfo *qi, UDWORD flag)
12701283

12711284
mylog("send_query: setting cmdbuffer = '%s'\n", cmdbuffer);
12721285

1286+
if (strnicmp(cmdbuffer, "BEGIN", 5) == 0)
1287+
{
1288+
CC_set_in_trans(self);
1289+
if (issue_begin)
1290+
{
1291+
issue_begin = FALSE;
1292+
continue;
1293+
}
1294+
}
1295+
else if (strnicmp(cmdbuffer, "COMMIT", 6) == 0)
1296+
CC_on_commit(self, TRUE);
1297+
else if (strnicmp(cmdbuffer, "ROLLBACK", 8) == 0)
1298+
CC_on_abort(self, TRUE);
1299+
else if (strnicmp(cmdbuffer, "END", 3) == 0)
1300+
CC_on_commit(self, TRUE);
1301+
else if (strnicmp(cmdbuffer, "ABORT", 5) == 0)
1302+
CC_on_abort(self, TRUE);
1303+
12731304
if (QR_command_successful(res))
12741305
QR_set_status(res, PGRES_COMMAND_OK);
12751306
QR_set_command(res, cmdbuffer);
@@ -1352,14 +1383,15 @@ CC_send_query(ConnectionClass *self, char *query, QueryInfo *qi, UDWORD flag)
13521383
qlog("ERROR from backend during send_query: '%s'\n", msgbuffer);
13531384

13541385
/* We should report that an error occured. Zoltan */
1355-
1386+
set_no_trans = FALSE;
13561387
if (!strncmp(msgbuffer, "FATAL", 5))
13571388
{
13581389
self->errornumber = CONNECTION_SERVER_REPORTED_ERROR;
1359-
CC_set_no_trans(self);
1390+
set_no_trans = TRUE;
13601391
}
13611392
else
13621393
self->errornumber = CONNECTION_SERVER_REPORTED_WARNING;
1394+
CC_on_abort(self, set_no_trans);
13631395
QR_set_status(res, PGRES_FATAL_ERROR);
13641396
QR_set_message(res, msgbuffer);
13651397
QR_set_aborted(res, TRUE);
@@ -1377,9 +1409,6 @@ CC_send_query(ConnectionClass *self, char *query, QueryInfo *qi, UDWORD flag)
13771409
if (query_completed)
13781410
{
13791411
res->next = QR_Constructor();
1380-
if (create_keyset)
1381-
QR_set_haskeyset(res->next);
1382-
mylog("send_query: 'T' no result_in: res = %u\n", res->next);
13831412
if (!res->next)
13841413
{
13851414
self->errornumber = CONNECTION_COULD_NOT_RECEIVE;
@@ -1388,6 +1417,9 @@ CC_send_query(ConnectionClass *self, char *query, QueryInfo *qi, UDWORD flag)
13881417
retres = NULL;
13891418
break;
13901419
}
1420+
if (create_keyset)
1421+
QR_set_haskeyset(res->next);
1422+
mylog("send_query: 'T' no result_in: res = %u\n", res->next);
13911423
res = res->next;
13921424

13931425
if (qi)
@@ -1448,7 +1480,7 @@ CC_send_query(ConnectionClass *self, char *query, QueryInfo *qi, UDWORD flag)
14481480
default:
14491481
self->errornumber = CONNECTION_BACKEND_CRAZY;
14501482
self->errormsg = "Unexpected protocol character from backend (send_query)";
1451-
CC_set_no_trans(self);
1483+
CC_on_abort(self, TRUE);
14521484

14531485
mylog("send_query: error - %s\n", self->errormsg);
14541486
ReadyToReturn = TRUE;
@@ -1536,7 +1568,7 @@ CC_send_function(ConnectionClass *self, int fnid, void *result_buf, int *actual_
15361568
{
15371569
self->errornumber = CONNECTION_COULD_NOT_SEND;
15381570
self->errormsg = "Could not send function to backend";
1539-
CC_set_no_trans(self);
1571+
CC_on_abort(self, TRUE);
15401572
return FALSE;
15411573
}
15421574

@@ -1545,7 +1577,7 @@ CC_send_function(ConnectionClass *self, int fnid, void *result_buf, int *actual_
15451577
{
15461578
self->errornumber = CONNECTION_COULD_NOT_SEND;
15471579
self->errormsg = "Could not send function to backend";
1548-
CC_set_no_trans(self);
1580+
CC_on_abort(self, TRUE);
15491581
return FALSE;
15501582
}
15511583

@@ -1594,6 +1626,7 @@ CC_send_function(ConnectionClass *self, int fnid, void *result_buf, int *actual_
15941626
case 'E':
15951627
SOCK_get_string(sock, msgbuffer, ERROR_MSG_LENGTH);
15961628
self->errormsg = msgbuffer;
1629+
CC_on_abort(self, FALSE);
15971630

15981631
mylog("send_function(V): 'E' - %s\n", self->errormsg);
15991632
qlog("ERROR from backend during send_function: '%s'\n", self->errormsg);
@@ -1606,7 +1639,7 @@ CC_send_function(ConnectionClass *self, int fnid, void *result_buf, int *actual_
16061639
default:
16071640
self->errornumber = CONNECTION_BACKEND_CRAZY;
16081641
self->errormsg = "Unexpected protocol character from backend (send_function, args)";
1609-
CC_set_no_trans(self);
1642+
CC_on_abort(self, TRUE);
16101643

16111644
mylog("send_function: error - %s\n", self->errormsg);
16121645
return FALSE;
@@ -1640,7 +1673,7 @@ CC_send_function(ConnectionClass *self, int fnid, void *result_buf, int *actual_
16401673
case 'E':
16411674
SOCK_get_string(sock, msgbuffer, ERROR_MSG_LENGTH);
16421675
self->errormsg = msgbuffer;
1643-
1676+
CC_on_abort(self, FALSE);
16441677
mylog("send_function(G): 'E' - %s\n", self->errormsg);
16451678
qlog("ERROR from backend during send_function: '%s'\n", self->errormsg);
16461679

@@ -1661,7 +1694,7 @@ CC_send_function(ConnectionClass *self, int fnid, void *result_buf, int *actual_
16611694
default:
16621695
self->errornumber = CONNECTION_BACKEND_CRAZY;
16631696
self->errormsg = "Unexpected protocol character from backend (send_function, result)";
1664-
CC_set_no_trans(self);
1697+
CC_on_abort(self, TRUE);
16651698

16661699
mylog("send_function: error - %s\n", self->errormsg);
16671700
return FALSE;

‎src/interfaces/odbc/connection.h

Lines changed: 6 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -13,6 +13,7 @@
1313

1414
#include <stdlib.h>
1515
#include <string.h>
16+
#include "descriptor.h"
1617

1718

1819
typedef enum
@@ -242,6 +243,8 @@ struct ConnectionClass_
242243
HENVhenv;/* environment this connection was created
243244
* on */
244245
StatementOptions stmtOptions;
246+
ARDFieldsardOptions;
247+
APDFieldsapdOptions;
245248
char *errormsg;
246249
interrornumber;
247250
CONN_Status status;
@@ -315,8 +318,11 @@ voidCC_lookup_pg_version(ConnectionClass *conn);
315318
voidCC_initialize_pg_version(ConnectionClass *conn);
316319
voidCC_log_error(const char *func, const char *desc, const ConnectionClass *self);
317320
intCC_get_max_query_len(const ConnectionClass *self);
321+
voidCC_on_commit(ConnectionClass *conn, BOOL set_no_trans);
322+
voidCC_on_abort(ConnectionClass *conn, BOOL set_no_trans);
318323

319324
/* CC_send_query_options */
320325
#defineCLEAR_RESULT_ON_ABORT1L
321326
#defineCREATE_KEYSET(1L << 1) /* create keyset for updatable curosrs */
327+
#defineGO_INTO_TRANSACTION(1L << 2) /* issue begin in advance */
322328
#endif

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