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postgresql/src/interfaces/odbc/options.c

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/* Module: options.c
*
* Description: This module contains routines for getting/setting
* connection and statement options.
*
* Classes: n/a
*
* API functions: SQLSetConnectOption, SQLSetStmtOption, SQLGetConnectOption,
* SQLGetStmtOption
*
* Comments: See "notice.txt" for copyright and license information.
*
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "psqlodbc.h"
#ifndef WIN32
#include "iodbc.h"
#include "isql.h"
#include "isqlext.h"
#else
#include <windows.h>
#include <sql.h>
#include <sqlext.h>
#endif
#include "environ.h"
#include "connection.h"
#include "statement.h"
#include "qresult.h"
extern GLOBAL_VALUES globals;
RETCODE set_statement_option(ConnectionClass *conn,
StatementClass *stmt,
UWORD fOption,
UDWORD vParam);
RETCODE set_statement_option(ConnectionClass *conn,
StatementClass *stmt,
UWORD fOption,
UDWORD vParam)
{
static char *func="set_statement_option";
char changed = FALSE;
switch(fOption) {
case SQL_ASYNC_ENABLE:/* ignored */
break;
case SQL_BIND_TYPE:
/* now support multi-column and multi-row binding */
if (conn) conn->stmtOptions.bind_size = vParam;
if (stmt) stmt->options.bind_size = vParam;
break;
case SQL_CONCURRENCY:
/* positioned update isn't supported so cursor concurrency is read-only */
if (conn) conn->stmtOptions.scroll_concurrency = vParam;
if (stmt) stmt->options.scroll_concurrency = vParam;
break;
/*
if (globals.lie) {
if (conn) conn->stmtOptions.scroll_concurrency = vParam;
if (stmt) stmt->options.scroll_concurrency = vParam;
}
else {
if (conn) conn->stmtOptions.scroll_concurrency = SQL_CONCUR_READ_ONLY;
if (stmt) stmt->options.scroll_concurrency = SQL_CONCUR_READ_ONLY;
if (vParam != SQL_CONCUR_READ_ONLY)
changed = TRUE;
}
break;
*/
case SQL_CURSOR_TYPE:
/* if declare/fetch, then type can only be forward.
otherwise, it can only be forward or static.
*/
mylog("SetStmtOption(): SQL_CURSOR_TYPE = %d\n", vParam);
if (globals.lie) {
if (conn) conn->stmtOptions.cursor_type = vParam;
if (stmt) stmt->options.cursor_type = vParam;
}
else {
if (globals.use_declarefetch) {
if (conn) conn->stmtOptions.cursor_type = SQL_CURSOR_FORWARD_ONLY;
if (stmt) stmt->options.cursor_type = SQL_CURSOR_FORWARD_ONLY;
if (vParam != SQL_CURSOR_FORWARD_ONLY)
changed = TRUE;
}
else {
if (vParam == SQL_CURSOR_FORWARD_ONLY || vParam == SQL_CURSOR_STATIC) {
if (conn) conn->stmtOptions.cursor_type = vParam; /* valid type */
if (stmt) stmt->options.cursor_type = vParam; /* valid type */
}
else {
if (conn) conn->stmtOptions.cursor_type = SQL_CURSOR_STATIC;
if (stmt) stmt->options.cursor_type = SQL_CURSOR_STATIC;
changed = TRUE;
}
}
}
break;
case SQL_KEYSET_SIZE: /* ignored, but saved and returned */
mylog("SetStmtOption(): SQL_KEYSET_SIZE, vParam = %d\n", vParam);
if (conn) conn->stmtOptions.keyset_size = vParam;
if (stmt) stmt->options.keyset_size = vParam;
break;
/*
if (globals.lie)
stmt->keyset_size = vParam;
else {
stmt->errornumber = STMT_NOT_IMPLEMENTED_ERROR;
stmt->errormsg = "Driver does not support keyset size option";
SC_log_error(func, "", stmt);
return SQL_ERROR;
}
*/
case SQL_MAX_LENGTH:/* ignored, but saved */
mylog("SetStmtOption(): SQL_MAX_LENGTH, vParam = %d\n", vParam);
if (conn) conn->stmtOptions.maxLength = vParam;
if (stmt) stmt->options.maxLength = vParam;
break;
case SQL_MAX_ROWS: /* ignored, but saved */
mylog("SetStmtOption(): SQL_MAX_ROWS, vParam = %d\n", vParam);
if (conn) conn->stmtOptions.maxRows = vParam;
if (stmt) stmt->options.maxRows = vParam;
break;
case SQL_NOSCAN: /* ignored */
mylog("SetStmtOption: SQL_NOSCAN, vParam = %d\n", vParam);
break;
case SQL_QUERY_TIMEOUT: /* ignored */
mylog("SetStmtOption: SQL_QUERY_TIMEOUT, vParam = %d\n", vParam);
/* "0" returned in SQLGetStmtOption */
break;
case SQL_RETRIEVE_DATA: /* ignored, but saved */
mylog("SetStmtOption(): SQL_RETRIEVE_DATA, vParam = %d\n", vParam);
if (conn) conn->stmtOptions.retrieve_data = vParam;
if (stmt) stmt->options.retrieve_data = vParam;
break;
case SQL_ROWSET_SIZE:
mylog("SetStmtOption(): SQL_ROWSET_SIZE, vParam = %d\n", vParam);
/* Save old rowset size for SQLExtendedFetch purposes
If the rowset_size is being changed since the last call
to fetch rows.
*/
if (stmt && stmt->save_rowset_size <= 0 && stmt->last_fetch_count > 0 )
stmt->save_rowset_size = stmt->options.rowset_size;
if (vParam < 1) {
vParam = 1;
changed = TRUE;
}
if (conn) conn->stmtOptions.rowset_size = vParam;
if (stmt) stmt->options.rowset_size = vParam;
break;
case SQL_SIMULATE_CURSOR: /* NOT SUPPORTED */
if (stmt) {
stmt->errornumber = STMT_NOT_IMPLEMENTED_ERROR;
stmt->errormsg = "Simulated positioned update/delete not supported. Use the cursor library.";
SC_log_error(func, "", stmt);
}
if (conn) {
conn->errornumber = STMT_NOT_IMPLEMENTED_ERROR;
conn->errormsg = "Simulated positioned update/delete not supported. Use the cursor library.";
CC_log_error(func, "", conn);
}
return SQL_ERROR;
case SQL_USE_BOOKMARKS:
if (stmt) stmt->options.use_bookmarks = vParam;
if (conn) conn->stmtOptions.use_bookmarks = vParam;
break;
default:
{
char option[64];
if (stmt) {
stmt->errornumber = STMT_NOT_IMPLEMENTED_ERROR;
stmt->errormsg = "Unknown statement option (Set)";
sprintf(option, "fOption=%d, vParam=%ld", fOption, vParam);
SC_log_error(func, option, stmt);
}
if (conn) {
conn->errornumber = STMT_NOT_IMPLEMENTED_ERROR;
conn->errormsg = "Unknown statement option (Set)";
sprintf(option, "fOption=%d, vParam=%ld", fOption, vParam);
CC_log_error(func, option, conn);
}
return SQL_ERROR;
}
}
if (changed) {
if (stmt) {
stmt->errormsg = "Requested value changed.";
stmt->errornumber = STMT_OPTION_VALUE_CHANGED;
}
if (conn) {
conn->errormsg = "Requested value changed.";
conn->errornumber = STMT_OPTION_VALUE_CHANGED;
}
return SQL_SUCCESS_WITH_INFO;
}
else
return SQL_SUCCESS;
}
/* Implements only SQL_AUTOCOMMIT */
RETCODE SQL_API SQLSetConnectOption(
HDBC hdbc,
UWORD fOption,
UDWORD vParam)
{
static char *func="SQLSetConnectOption";
ConnectionClass *conn = (ConnectionClass *) hdbc;
char changed = FALSE;
RETCODE retval;
int i;
mylog("%s: entering...\n", func);
if ( ! conn) {
CC_log_error(func, "", NULL);
return SQL_INVALID_HANDLE;
}
switch (fOption) {
/* Statement Options
(apply to all stmts on the connection and become defaults for new stmts)
*/
case SQL_ASYNC_ENABLE:
case SQL_BIND_TYPE:
case SQL_CONCURRENCY:
case SQL_CURSOR_TYPE:
case SQL_KEYSET_SIZE:
case SQL_MAX_LENGTH:
case SQL_MAX_ROWS:
case SQL_NOSCAN:
case SQL_QUERY_TIMEOUT:
case SQL_RETRIEVE_DATA:
case SQL_ROWSET_SIZE:
case SQL_SIMULATE_CURSOR:
case SQL_USE_BOOKMARKS:
/* Affect all current Statements */
for (i = 0; i < conn->num_stmts; i++) {
if ( conn->stmts[i]) {
set_statement_option(NULL, conn->stmts[i], fOption, vParam);
}
}
/* Become the default for all future statements on this connection */
retval = set_statement_option(conn, NULL, fOption, vParam);
if (retval == SQL_SUCCESS_WITH_INFO)
changed = TRUE;
else if (retval == SQL_ERROR)
return SQL_ERROR;
break;
/**********************************/
/***** Connection Options *******/
/**********************************/
case SQL_ACCESS_MODE: /* ignored */
break;
case SQL_AUTOCOMMIT:
/* Since we are almost always in a transaction, this is now ok.
Even if we were, the logic will handle it by sending a commit
after the statement.
if (CC_is_in_trans(conn)) {
conn->errormsg = "Cannot switch commit mode while a transaction is in progres";
conn->errornumber = CONN_TRANSACT_IN_PROGRES;
CC_log_error(func, "", conn);
return SQL_ERROR;
}
*/
mylog("SQLSetConnectOption: AUTOCOMMIT: transact_status=%d, vparam=%d\n", conn->transact_status, vParam);
switch(vParam) {
case SQL_AUTOCOMMIT_OFF:
CC_set_autocommit_off(conn);
break;
case SQL_AUTOCOMMIT_ON:
CC_set_autocommit_on(conn);
break;
default:
conn->errormsg = "Illegal parameter value for SQL_AUTOCOMMIT";
conn->errornumber = CONN_INVALID_ARGUMENT_NO;
CC_log_error(func, "", conn);
return SQL_ERROR;
}
break;
case SQL_CURRENT_QUALIFIER: /* ignored */
break;
case SQL_LOGIN_TIMEOUT: /* ignored */
break;
case SQL_PACKET_SIZE: /* ignored */
break;
case SQL_QUIET_MODE: /* ignored */
break;
case SQL_TXN_ISOLATION: /* ignored */
break;
/* These options should be handled by driver manager */
case SQL_ODBC_CURSORS:
case SQL_OPT_TRACE:
case SQL_OPT_TRACEFILE:
case SQL_TRANSLATE_DLL:
case SQL_TRANSLATE_OPTION:
CC_log_error(func, "This connect option (Set) is only used by the Driver Manager", conn);
break;
default:
{
char option[64];
conn->errormsg = "Unknown connect option (Set)";
conn->errornumber = CONN_UNSUPPORTED_OPTION;
sprintf(option, "fOption=%d, vParam=%ld", fOption, vParam);
CC_log_error(func, option, conn);
return SQL_ERROR;
}
}
if (changed) {
conn->errornumber = CONN_OPTION_VALUE_CHANGED;
conn->errormsg = "Requested value changed.";
return SQL_SUCCESS_WITH_INFO;
}
else
return SQL_SUCCESS;
}
/* - - - - - - - - - */
/* This function just can tell you whether you are in Autcommit mode or not */
RETCODE SQL_API SQLGetConnectOption(
HDBC hdbc,
UWORD fOption,
PTR pvParam)
{
static char *func="SQLGetConnectOption";
ConnectionClass *conn = (ConnectionClass *) hdbc;
mylog("%s: entering...\n", func);
if (! conn) {
CC_log_error(func, "", NULL);
return SQL_INVALID_HANDLE;
}
switch (fOption) {
case SQL_ACCESS_MODE:/* NOT SUPPORTED */
*((UDWORD *) pvParam) = SQL_MODE_READ_WRITE;
break;
case SQL_AUTOCOMMIT:
*((UDWORD *)pvParam) = (UDWORD)( CC_is_in_autocommit(conn) ?
SQL_AUTOCOMMIT_ON : SQL_AUTOCOMMIT_OFF);
break;
case SQL_CURRENT_QUALIFIER: /* don't use qualifiers */
if(pvParam)
strcpy(pvParam, "");
break;
case SQL_LOGIN_TIMEOUT: /* NOT SUPPORTED */
*((UDWORD *) pvParam) = 0;
break;
case SQL_PACKET_SIZE: /* NOT SUPPORTED */
*((UDWORD *) pvParam) = globals.socket_buffersize;
break;
case SQL_QUIET_MODE:/* NOT SUPPORTED */
*((UDWORD *) pvParam) = (UDWORD) NULL;
break;
case SQL_TXN_ISOLATION:/* NOT SUPPORTED */
*((UDWORD *) pvParam) = SQL_TXN_SERIALIZABLE;
break;
/* These options should be handled by driver manager */
case SQL_ODBC_CURSORS:
case SQL_OPT_TRACE:
case SQL_OPT_TRACEFILE:
case SQL_TRANSLATE_DLL:
case SQL_TRANSLATE_OPTION:
CC_log_error(func, "This connect option (Get) is only used by the Driver Manager", conn);
break;
default:
{
char option[64];
conn->errormsg = "Unknown connect option (Get)";
conn->errornumber = CONN_UNSUPPORTED_OPTION;
sprintf(option, "fOption=%d", fOption);
CC_log_error(func, option, conn);
return SQL_ERROR;
break;
}
}
return SQL_SUCCESS;
}
/* - - - - - - - - - */
RETCODE SQL_API SQLSetStmtOption(
HSTMT hstmt,
UWORD fOption,
UDWORD vParam)
{
static char *func="SQLSetStmtOption";
StatementClass *stmt = (StatementClass *) hstmt;
mylog("%s: entering...\n", func);
/* thought we could fake Access out by just returning SQL_SUCCESS */
/* all the time, but it tries to set a huge value for SQL_MAX_LENGTH */
/* and expects the driver to reduce it to the real value */
if( ! stmt) {
SC_log_error(func, "", NULL);
return SQL_INVALID_HANDLE;
}
return set_statement_option(NULL, stmt, fOption, vParam);
}
/* - - - - - - - - - */
RETCODE SQL_API SQLGetStmtOption(
HSTMT hstmt,
UWORD fOption,
PTR pvParam)
{
static char *func="SQLGetStmtOption";
StatementClass *stmt = (StatementClass *) hstmt;
QResultClass *res;
mylog("%s: entering...\n", func);
/* thought we could fake Access out by just returning SQL_SUCCESS */
/* all the time, but it tries to set a huge value for SQL_MAX_LENGTH */
/* and expects the driver to reduce it to the real value */
if( ! stmt) {
SC_log_error(func, "", NULL);
return SQL_INVALID_HANDLE;
}
switch(fOption) {
case SQL_GET_BOOKMARK:
case SQL_ROW_NUMBER:
res = stmt->result;
if ( stmt->manual_result || ! globals.use_declarefetch) {
/* make sure we're positioned on a valid row */
if((stmt->currTuple < 0) ||
(stmt->currTuple >= QR_get_num_tuples(res))) {
stmt->errormsg = "Not positioned on a valid row.";
stmt->errornumber = STMT_INVALID_CURSOR_STATE_ERROR;
SC_log_error(func, "", stmt);
return SQL_ERROR;
}
}
else {
if (stmt->currTuple == -1 || ! res || ! res->tupleField) {
stmt->errormsg = "Not positioned on a valid row.";
stmt->errornumber = STMT_INVALID_CURSOR_STATE_ERROR;
SC_log_error(func, "", stmt);
return SQL_ERROR;
}
}
if (fOption == SQL_GET_BOOKMARK && stmt->options.use_bookmarks == SQL_UB_OFF) {
stmt->errormsg = "Operation invalid because use bookmarks not enabled.";
stmt->errornumber = STMT_OPERATION_INVALID;
SC_log_error(func, "", stmt);
return SQL_ERROR;
}
*((UDWORD *) pvParam) = SC_get_bookmark(stmt);
break;
case SQL_ASYNC_ENABLE: /* NOT SUPPORTED */
*((SDWORD *) pvParam) = SQL_ASYNC_ENABLE_OFF;
break;
case SQL_BIND_TYPE:
*((SDWORD *) pvParam) = stmt->options.bind_size;
break;
case SQL_CONCURRENCY: /* NOT REALLY SUPPORTED */
mylog("GetStmtOption(): SQL_CONCURRENCY\n");
*((SDWORD *)pvParam) = stmt->options.scroll_concurrency;
break;
case SQL_CURSOR_TYPE: /* PARTIAL SUPPORT */
mylog("GetStmtOption(): SQL_CURSOR_TYPE\n");
*((SDWORD *)pvParam) = stmt->options.cursor_type;
break;
case SQL_KEYSET_SIZE: /* NOT SUPPORTED, but saved */
mylog("GetStmtOption(): SQL_KEYSET_SIZE\n");
*((SDWORD *)pvParam) = stmt->options.keyset_size;
break;
case SQL_MAX_LENGTH: /* NOT SUPPORTED, but saved */
*((SDWORD *)pvParam) = stmt->options.maxLength;
break;
case SQL_MAX_ROWS: /* NOT SUPPORTED, but saved */
*((SDWORD *)pvParam) = stmt->options.maxRows;
mylog("GetSmtOption: MAX_ROWS, returning %d\n", stmt->options.maxRows);
break;
case SQL_NOSCAN:/* NOT SUPPORTED */
*((SDWORD *) pvParam) = SQL_NOSCAN_ON;
break;
case SQL_QUERY_TIMEOUT: /* NOT SUPPORTED */
*((SDWORD *) pvParam) = 0;
break;
case SQL_RETRIEVE_DATA: /* NOT SUPPORTED, but saved */
*((SDWORD *) pvParam) = stmt->options.retrieve_data;
break;
case SQL_ROWSET_SIZE:
*((SDWORD *) pvParam) = stmt->options.rowset_size;
break;
case SQL_SIMULATE_CURSOR:/* NOT SUPPORTED */
*((SDWORD *) pvParam) = SQL_SC_NON_UNIQUE;
break;
case SQL_USE_BOOKMARKS:
*((SDWORD *) pvParam) = stmt->options.use_bookmarks;
break;
default:
{
char option[64];
stmt->errornumber = STMT_NOT_IMPLEMENTED_ERROR;
stmt->errormsg = "Unknown statement option (Get)";
sprintf(option, "fOption=%d", fOption);
SC_log_error(func, option, stmt);
return SQL_ERROR;
}
}
return SQL_SUCCESS;
}
/* - - - - - - - - - */
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