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/*********************************************************************
*
* unixODBC Cursor Library
*
* Created by Nick Gorham
* (nick@easysoft.com).
*
* copyright (c) 1999 Nick Gorham
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
**********************************************************************
*
* $Id: SQLConnect.c,v 1.3 2002/11/25 15:37:54 lurcher Exp $
*
* $Log: SQLConnect.c,v $
* Revision 1.3 2002/11/25 15:37:54 lurcher
*
* Fix problems in the cursor lib
*
* Revision 1.2 2002/11/19 18:52:28 lurcher
*
* Alter the cursor lib to not require linking to the driver manager.
*
* Revision 1.1.1.1 2001/10/17 16:40:15 lurcher
*
* First upload to SourceForge
*
* Revision 1.3 2001/04/12 17:43:36 nick
*
* Change logging and added autotest to odbctest
*
* Revision 1.2 2001/03/28 14:57:22 nick
*
* Fix bugs in corsor lib introduced bu UNCODE and other changes
*
* Revision 1.1.1.1 2000/09/04 16:42:52 nick
* Imported Sources
*
* Revision 1.3 1999/11/20 20:54:00 ngorham
*
* Asorted portability fixes
*
* Revision 1.2 1999/11/10 03:51:35 ngorham
*
* Update the error reporting in the DM to enable ODBC 3 and 2 calls to
* work at the same time
*
* Revision 1.1 1999/09/19 22:22:50 ngorham
*
*
* Added first cursor library work, read only at the moment and only works
* with selects with no where clause
*
*
**********************************************************************/
#include "cursorlibrary.h"
static struct driver_func cl_template_func[] =
{
/* 00 */ { SQL_API_SQLALLOCCONNECT, "SQLAllocConnect", NULL, NULL,
NULL },
/* 01 */ { SQL_API_SQLALLOCENV, "SQLAllocEnv", NULL, NULL,
NULL },
/* 02 */ { SQL_API_SQLALLOCHANDLE, "SQLAllocHandle", NULL, NULL,
(SQLRETURN (*)())CLAllocHandle },
/* 03 */ { SQL_API_SQLALLOCSTMT, "SQLAllocStmt", NULL, NULL,
(SQLRETURN (*)())CLAllocStmt },
/* 04 */ { SQL_API_SQLALLOCHANDLESTD, "SQLAllocHandleStd", NULL, NULL,
(SQLRETURN (*)())CLAllocHandleStd },
/* 05 */ { SQL_API_SQLBINDCOL, "SQLBindCol", NULL, NULL,
(SQLRETURN (*)())CLBindCol },
/* 06 */ { SQL_API_SQLBINDPARAM, "SQLBindParam", NULL, NULL,
(SQLRETURN (*)())CLBindParam },
/* 07 */ { SQL_API_SQLBINDPARAMETER, "SQLBindParameter", NULL, NULL,
(SQLRETURN (*)())CLBindParameter },
/* 08 */ { SQL_API_SQLBROWSECONNECT, "SQLBrowseConnect", NULL, NULL,
NULL },
/* 09 */ { SQL_API_SQLBULKOPERATIONS, "SQLBulkOperations", NULL, NULL,
NULL },
/* 10 */ { SQL_API_SQLCANCEL, "SQLCancel", NULL, NULL,
(SQLRETURN (*)())CLCancel },
/* 11 */ { SQL_API_SQLCLOSECURSOR, "SQLCloseCursor", NULL, NULL,
(SQLRETURN (*)())CLCloseCursor },
/* 12 */ { SQL_API_SQLCOLATTRIBUTE, "SQLColAttribute", NULL, NULL,
(SQLRETURN (*)())CLColAttribute },
/* 13 */ { SQL_API_SQLCOLATTRIBUTES, "SQLColAttributes", NULL, NULL,
(SQLRETURN (*)())CLColAttributes },
/* 14 */ { SQL_API_SQLCOLUMNPRIVILEGES, "SQLColumnPrivileges", NULL, NULL,
(SQLRETURN (*)())CLColumnPrivileges },
/* 15 */ { SQL_API_SQLCOLUMNS, "SQLColumns", NULL, NULL,
(SQLRETURN (*)())CLColumns },
/* 16 */ { SQL_API_SQLCONNECT, "SQLConnect", NULL, NULL,
NULL },
/* 17 */ { SQL_API_SQLCOPYDESC, "SQLCopyDesc", NULL, NULL,
(SQLRETURN (*)())CLCopyDesc },
/* 18 */ { SQL_API_SQLDATASOURCES, "SQLDataSources", NULL, NULL,
NULL },
/* 19 */ { SQL_API_SQLDESCRIBECOL, "SQLDescribeCol", NULL, NULL,
(SQLRETURN (*)())CLDescribeCol },
/* 20 */ { SQL_API_SQLDESCRIBEPARAM, "SQLDescribeParam", NULL, NULL,
(SQLRETURN (*)())CLDescribeParam },
/* 21 */ { SQL_API_SQLDISCONNECT, "SQLDisconnect", NULL, NULL,
(SQLRETURN (*)())CLDisconnect },
/* 22 */ { SQL_API_SQLDRIVERCONNECT, "SQLDriverConnect", NULL, NULL,
NULL },
/* 23 */ { SQL_API_SQLDRIVERS, "SQLDrivers", NULL, NULL,
NULL },
/* 24 */ { SQL_API_SQLENDTRAN, "SQLEndTran", NULL, NULL,
(SQLRETURN (*)())CLEndTran },
/* 25 */ { SQL_API_SQLERROR, "SQLError", NULL, NULL,
(SQLRETURN (*)())CLError },
/* 26 */ { SQL_API_SQLEXECDIRECT, "SQLExecDirect", NULL, NULL,
(SQLRETURN (*)())CLExecDirect },
/* 27 */ { SQL_API_SQLEXECUTE, "SQLExecute", NULL, NULL,
(SQLRETURN (*)())CLExecute },
/* 28 */ { SQL_API_SQLEXTENDEDFETCH, "SQLExtendedFetch", NULL, NULL,
(SQLRETURN (*)())CLExtendedFetch },
/* 29 */ { SQL_API_SQLFETCH, "SQLFetch", NULL, NULL,
(SQLRETURN (*)())CLFetch },
/* 30 */ { SQL_API_SQLFETCHSCROLL, "SQLFetchScroll", NULL, NULL,
(SQLRETURN (*)())CLFetchScroll },
/* 31 */ { SQL_API_SQLFOREIGNKEYS, "SQLForeignKeys", NULL, NULL,
(SQLRETURN (*)())CLForeignKeys },
/* 32 */ { SQL_API_SQLFREEENV, "SQLFreeEnv", NULL, NULL,
NULL },
/* 33 */ { SQL_API_SQLFREEHANDLE, "SQLFreeHandle", NULL, NULL,
(SQLRETURN (*)())CLFreeHandle },
/* 34 */ { SQL_API_SQLFREESTMT, "SQLFreeStmt", NULL, NULL,
(SQLRETURN (*)())CLFreeStmt },
/* 35 */ { SQL_API_SQLFREECONNECT, "SQLFreeConnect", NULL, NULL,
NULL },
/* 36 */ { SQL_API_SQLGETCONNECTATTR, "SQLGetConnectAttr", NULL, NULL,
(SQLRETURN (*)())CLGetConnectAttr },
/* 37 */ { SQL_API_SQLGETCONNECTOPTION, "SQLGetConnectOption", NULL, NULL,
(SQLRETURN (*)())CLGetConnectOption },
/* 38 */ { SQL_API_SQLGETCURSORNAME, "SQLGetCursorName", NULL, NULL,
(SQLRETURN (*)())CLGetCursorName },
/* 39 */ { SQL_API_SQLGETDATA, "SQLGetData", NULL, NULL,
(SQLRETURN (*)())CLGetData },
/* 40 */ { SQL_API_SQLGETDESCFIELD, "SQLGetDescField", NULL, NULL,
(SQLRETURN (*)())CLGetDescField },
/* 41 */ { SQL_API_SQLGETDESCREC, "SQLGetDescRec", NULL, NULL,
(SQLRETURN (*)())CLGetDescRec },
/* 42 */ { SQL_API_SQLGETDIAGFIELD, "SQLGetDiagField", NULL, NULL,
(SQLRETURN (*)())CLGetDiagField },
/* 43 */ { SQL_API_SQLGETENVATTR, "SQLGetEnvAttr", NULL, NULL,
NULL },
/* 44 */ { SQL_API_SQLGETFUNCTIONS, "SQLGetFunctions", NULL, NULL,
NULL },
/* 45 */ { SQL_API_SQLGETINFO, "SQLGetInfo", NULL, NULL,
(SQLRETURN (*)())CLGetInfo },
/* 46 */ { SQL_API_SQLGETSTMTATTR, "SQLGetStmtAttr", NULL, NULL,
(SQLRETURN (*)())CLGetStmtAttr },
/* 47 */ { SQL_API_SQLGETSTMTOPTION, "SQLGetStmtOption", NULL, NULL,
(SQLRETURN (*)())CLGetStmtOption },
/* 48 */ { SQL_API_SQLGETTYPEINFO, "SQLGetTypeInfo", NULL, NULL,
(SQLRETURN (*)())CLGetTypeInfo },
/* 49 */ { SQL_API_SQLMORERESULTS, "SQLMoreResults", NULL, NULL,
(SQLRETURN (*)())CLMoreResults },
/* 50 */ { SQL_API_SQLNATIVESQL, "SQLNativeSql", NULL, NULL,
(SQLRETURN (*)())CLNativeSql },
/* 51 */ { SQL_API_SQLNUMPARAMS, "SQLNumParams", NULL, NULL,
(SQLRETURN (*)())CLNumParams },
/* 52 */ { SQL_API_SQLNUMRESULTCOLS, "SQLNumResultCols", NULL, NULL,
(SQLRETURN (*)())CLNumResultCols },
/* 53 */ { SQL_API_SQLPARAMDATA, "SQLParamData", NULL, NULL,
(SQLRETURN (*)())CLParamData },
/* 54 */ { SQL_API_SQLPARAMOPTIONS, "SQLParamOptions", NULL, NULL,
(SQLRETURN (*)())CLParamOptions },
/* 55 */ { SQL_API_SQLPREPARE, "SQLPrepare", NULL, NULL,
(SQLRETURN (*)())CLPrepare },
/* 56 */ { SQL_API_SQLPRIMARYKEYS, "SQLPrimaryKeys", NULL, NULL,
(SQLRETURN (*)())CLPrimaryKeys },
/* 57 */ { SQL_API_SQLPROCEDURECOLUMNS, "SQLProcedureColumns", NULL, NULL,
(SQLRETURN (*)())CLProcedureColumns },
/* 58 */ { SQL_API_SQLPROCEDURES, "SQLProcedures", NULL, NULL,
(SQLRETURN (*)())CLProcedures },
/* 59 */ { SQL_API_SQLPUTDATA, "SQLPutData", NULL, NULL,
(SQLRETURN (*)())CLPutData },
/* 60 */ { SQL_API_SQLROWCOUNT, "SQLRowCount", NULL, NULL,
(SQLRETURN (*)())CLRowCount },
/* 61 */ { SQL_API_SQLSETCONNECTATTR, "SQLSetConnectAttr", NULL, NULL,
(SQLRETURN (*)())CLSetConnectAttr },
/* 62 */ { SQL_API_SQLSETCONNECTOPTION, "SQLSetConnectOption", NULL, NULL,
(SQLRETURN (*)())CLSetConnectOption },
/* 63 */ { SQL_API_SQLSETCURSORNAME, "SQLSetCursorName", NULL, NULL,
(SQLRETURN (*)())CLSetCursorName },
/* 64 */ { SQL_API_SQLSETDESCFIELD, "SQLSetDescField", NULL, NULL,
(SQLRETURN (*)())CLSetDescField },
/* 65 */ { SQL_API_SQLSETDESCREC, "SQLSetDescRec", NULL, NULL,
(SQLRETURN (*)())CLSetDescRec },
/* 66 */ { SQL_API_SQLSETENVATTR, "SQLSetEnvAttr", NULL, NULL,
NULL },
/* 67 */ { SQL_API_SQLSETPARAM, "SQLSetParam", NULL, NULL,
(SQLRETURN (*)())CLSetParam },
/* 68 */ { SQL_API_SQLSETPOS, "SQLSetPos", NULL, NULL,
(SQLRETURN (*)())CLSetPos },
/* 69 */ { SQL_API_SQLSETSCROLLOPTIONS, "SQLSetScrollOptions", NULL, NULL,
(SQLRETURN (*)())CLSetScrollOptions },
/* 70 */ { SQL_API_SQLSETSTMTATTR, "SQLSetStmtAttr", NULL, NULL,
(SQLRETURN (*)())CLSetStmtAttr },
/* 71 */ { SQL_API_SQLSETSTMTOPTION, "SQLSetStmtOption", NULL, NULL,
(SQLRETURN (*)())CLSetStmtOption },
/* 72 */ { SQL_API_SQLSPECIALCOLUMNS, "SQLSpecialColumns", NULL, NULL,
(SQLRETURN (*)())CLSpecialColumns },
/* 73 */ { SQL_API_SQLSTATISTICS, "SQLStatistics", NULL, NULL,
(SQLRETURN (*)())CLStatistics },
/* 74 */ { SQL_API_SQLTABLEPRIVILEGES, "SQLTablePrivileges", NULL, NULL,
(SQLRETURN (*)())CLTablePrivileges },
/* 75 */ { SQL_API_SQLTABLES, "SQLTables", NULL, NULL,
(SQLRETURN (*)())CLTables },
/* 76 */ { SQL_API_SQLTRANSACT, "SQLTransact", NULL, NULL,
(SQLRETURN (*)())CLTransact },
/* 77 */ { SQL_API_SQLGETDIAGREC, "SQLGetDiagRec", NULL, NULL,
(SQLRETURN (*)())CLGetDiagRec },
};
/*
* connect is done by the driver manager, the is called to put the
* cursor lib in the call chain
*/
SQLRETURN CLConnect( DMHDBC connection, struct driver_helper_funcs *dh )
{
int i;
CLHDBC cl_connection;
SQLRETURN ret;
/*
* Allocated a cursor connection structure
*/
cl_connection = malloc( sizeof( struct cl_connection ));
if ( !cl_connection )
{
dh ->dm_log_write( "CL " __FILE__,
__LINE__,
LOG_INFO,
LOG_INFO,
"Error: IM001" );
dh ->__post_internal_error( &connection -> error,
ERROR_HY001, NULL,
connection -> environment -> requested_version );
return SQL_ERROR;
}
memset( cl_connection, 0, sizeof( struct cl_connection ));
cl_connection -> functions = connection -> functions;
cl_connection -> dm_connection = connection;
cl_connection -> dh.__post_internal_error_ex = dh -> __post_internal_error_ex;
cl_connection -> dh.__post_internal_error = dh -> __post_internal_error;
cl_connection -> dh.dm_log_write = dh -> dm_log_write;
/*
* allocated a copy of the functions
*/
if ( !( cl_connection -> functions = malloc( sizeof( cl_template_func ))))
{
dh -> dm_log_write( "CL " __FILE__,
__LINE__,
LOG_INFO,
LOG_INFO,
"Error: IM001" );
cl_connection -> dh.__post_internal_error( &connection -> error,
ERROR_HY001, NULL,
connection -> environment -> requested_version );
return SQL_ERROR;
}
/*
* replace the function pointers with the ones in the
* cursor lib
*/
for ( i = 0;
i < sizeof( cl_template_func ) / sizeof( cl_template_func[ 0 ] );
i ++ )
{
cl_connection -> functions[ i ] =
connection -> functions[ i ];
/*
* if set replace the driver function with the function in
* the template
*/
if ( cl_template_func[ i ].func &&
connection -> functions[ i ].func )
{
connection -> functions[ i ] =
cl_template_func[ i ];
/*
* copy the can_supply from the drivers list
*/
connection -> functions[ i ].can_supply =
cl_connection -> functions[ i ].can_supply;
}
}
/*
* add some functions the cursor lib will supply
*/
connection -> functions[ DM_SQLSETPOS ].can_supply = 1;
connection -> functions[ DM_SQLSETPOS ].func =
cl_template_func[ DM_SQLSETPOS ].func;
connection -> functions[ DM_SQLSETSCROLLOPTIONS ].can_supply = 1;
connection -> functions[ DM_SQLSETSCROLLOPTIONS ].func =
cl_template_func[ DM_SQLSETSCROLLOPTIONS ].func;
connection -> functions[ DM_SQLFETCHSCROLL ].can_supply = 1;
connection -> functions[ DM_SQLFETCHSCROLL ].func =
cl_template_func[ DM_SQLFETCHSCROLL ].func;
connection -> functions[ DM_SQLEXTENDEDFETCH ].can_supply = 1;
connection -> functions[ DM_SQLEXTENDEDFETCH ].func =
cl_template_func[ DM_SQLEXTENDEDFETCH ].func;
/*
* blank off what we don't do
*/
connection -> functions[ DM_SQLBULKOPERATIONS ].can_supply = 0;
connection -> functions[ DM_SQLBULKOPERATIONS ].func = NULL;
/*
* intercept the driver dbc
*/
cl_connection -> driver_dbc = connection -> driver_dbc;
connection -> driver_dbc = ( SQLHANDLE ) cl_connection;
/*
* check the number of alowed active statements
*/
if ( CHECK_SQLGETINFO( cl_connection ))
{
ret = SQLGETINFO( cl_connection,
cl_connection -> driver_dbc,
SQL_MAX_CONCURRENT_ACTIVITIES,
&cl_connection -> active_statement_allowed,
0,
NULL );
/*
* assume the worst
*/
if ( !SQL_SUCCEEDED( ret ))
{
cl_connection -> active_statement_allowed = 1;
}
}
else
{
cl_connection -> active_statement_allowed = 1;
}
return SQL_SUCCESS;
}
SQLRETURN CLDisconnect( SQLHDBC connection_handle )
{
SQLRETURN ret;
int i;
CLHDBC cl_connection = (CLHDBC)connection_handle;
DMHDBC connection = cl_connection -> dm_connection;
/*
* disconnect from the driver
*/
ret = SQLDISCONNECT( cl_connection,
cl_connection -> driver_dbc );
if ( SQL_SUCCEEDED( ret ))
{
/*
* replace the function pointers with the ones from the
* cursor lib
*/
for ( i = 0;
i < sizeof( cl_template_func ) / sizeof( cl_template_func[ 0 ] );
i ++ )
{
connection -> functions[ i ] =
cl_connection -> functions[ i ];
}
/*
* replace the driver dbc
*/
connection -> driver_dbc =
cl_connection -> driver_dbc;
}
return ret;
}
|
