// source such as opening and closing the data source.
// Author: Doug Card
// Modified by:
-// Mods: Dec, 1998: Added support for SQL statement logging and database
-// cataloging
+// Mods: Dec, 1998:
+// -Added support for SQL statement logging and database cataloging
+// Mods: April, 1999
+// -Added QUERY_ONLY mode support to reduce default number of cursors
+// -Added additional SQL logging code
+// -Added DEBUG-ONLY tracking of wxTable objects to detect orphaned DB connections
+// -Set ODBC option to only read committed writes to the DB so all
+// databases operate the same in that respect
// Created: 9.96
// RCS-ID: $Id$
// Copyright: (c) 1996 Remstar International, Inc.
// Licence: wxWindows licence, plus:
-// Notice: This class library and its intellectual design are free of charge for use,
+// Notice: This class library and its intellectual design are free of charge for use,
// modification, enhancement, debugging under the following conditions:
// 1) These classes may only be used as part of the implementation of a
// wxWindows-based application
// the wxWindows GUI development toolkit.
///////////////////////////////////////////////////////////////////////////////
-#ifdef __GNUG__
-#pragma implementation "db.h"
-#endif
-
/*
// SYNOPSIS START
// SYNOPSIS STOP
*/
-/*
+// Use this line for wxWindows v1.x
+//#include "wx_ver.h"
+// Use this line for wxWindows v2.x
+#include "wx/version.h"
+#include "wx/wxprec.h"
+
+#if wxMAJOR_VERSION == 2
+ #ifdef __GNUG__
+ #pragma implementation "db.h"
+ #endif
+#endif
+
#ifdef DBDEBUG_CONSOLE
#include <iostream.h>
#endif
-*/
-
-#include "wx/wxprec.h"
#ifdef __BORLANDC__
- #pragma hdrstop
+ #pragma hdrstop
#endif //__BORLANDC__
-#ifndef WX_PRECOMP
- #include <wx/wx.h>
-#endif //WX_PRECOMP
+#if wxMAJOR_VERSION == 2
+ #ifndef WX_PRECOMP
+ #include "wx/string.h"
+ #endif //WX_PRECOMP
+ #include "wx/filefn.h"
+#endif
+
+#if wxMAJOR_VERSION == 1
+# if defined(wx_msw) || defined(wx_x)
+# ifdef WX_PRECOMP
+# include "wx_prec.h"
+# else
+# include "wx.h"
+# endif
+# endif
+# define wxUSE_ODBC 1
+#endif
#if wxUSE_ODBC
#include <assert.h>
#include <stdlib.h>
#include <ctype.h>
-#include "wx/db.h"
+#if wxMAJOR_VERSION == 1
+ #include "db.h"
+#elif wxMAJOR_VERSION == 2
+ #include "wx/db.h"
+#endif
-DbList* WXDLLEXPORT PtrBegDbList = 0;
+DbList WXDLLEXPORT *PtrBegDbList = 0;
+
+#if __WXDEBUG__ > 0
+ #if wxMAJOR_VERSION == 2
+ #include "wx/object.h"
+ #include "wx/list.h"
+ #include "wx/utils.h"
+ #include "wx/msgdlg.h"
+ #endif
+ extern wxList TablesInUse;
+#endif
+
+// SQL Log defaults to be used by GetDbConnection
+enum sqlLog SQLLOGstate = sqlLogOFF;
+
+char SQLLOGfn[DB_PATH_MAX+1] = "sqllog.txt";
+
+// The wxDB::errorList is copied to this variable when the wxDB object
+// is closed. This way, the error list is still available after the
+// database object is closed. This is necessary if the database
+// connection fails so the calling application can show the operator
+// why the connection failed. Note: as each wxDB object is closed, it
+// will overwrite the errors of the previously destroyed wxDB object in
+// this variable.
+char DBerrorList[DB_MAX_ERROR_HISTORY][DB_MAX_ERROR_MSG_LEN];
/********** wxDB Constructor **********/
wxDB::wxDB(HENV &aHenv)
fpSqlLog = 0; // Sql Log file pointer
sqlLogState = sqlLogOFF; // By default, logging is turned off
+ nTables = 0;
strcpy(sqlState,"");
strcpy(errorMsg,"");
uid = Uid;
authStr = AuthStr;
-#ifndef FWD_ONLY_CURSORS
-
RETCODE retcode;
+#ifndef FWD_ONLY_CURSORS
+
// Specify that the ODBC cursor library be used, if needed. This must be
// specified before the connection is made.
retcode = SQLSetConnectOption(hdbc, SQL_ODBC_CURSORS, SQL_CUR_USE_IF_NEEDED);
#endif
// Connect to the data source
- if (SQLConnect(hdbc, (UCHAR FAR *) Dsn, SQL_NTS,
- (UCHAR FAR *) Uid, SQL_NTS,
- (UCHAR FAR *) AuthStr, SQL_NTS) != SQL_SUCCESS)
+ retcode = SQLConnect(hdbc, (UCHAR FAR *) Dsn, SQL_NTS,
+ (UCHAR FAR *) Uid, SQL_NTS,
+ (UCHAR FAR *) AuthStr,SQL_NTS);
+ if (retcode == SQL_SUCCESS_WITH_INFO)
+ DispAllErrors(henv, hdbc);
+ else if (retcode != SQL_SUCCESS)
return(DispAllErrors(henv, hdbc));
+/*
+ If using Intersolv branded ODBC drivers, this is the place where you would substitute
+ your branded driver license information
+
+ SQLSetConnectOption(hdbc, 1041, (UDWORD) "");
+ SQLSetConnectOption(hdbc, 1042, (UDWORD) "");
+*/
// Mark database as open
dbIsOpen = TRUE;
typeInfInteger.FsqlType = SQL_INTEGER;
// Date/Time
- if (! getDataTypeInfo(SQL_TIMESTAMP, typeInfDate))
- return(FALSE);
+ if (Dbms() != dbmsDBASE)
+ {
+ if (! getDataTypeInfo(SQL_TIMESTAMP, typeInfDate))
+ return(FALSE);
+ else
+ typeInfDate.FsqlType = SQL_TIMESTAMP;
+ }
else
- typeInfDate.FsqlType = SQL_TIMESTAMP;
+ {
+ if (! getDataTypeInfo(SQL_DATE, typeInfDate))
+ return(FALSE);
+ else
+ typeInfDate.FsqlType = SQL_DATE;
+ }
#ifdef DBDEBUG_CONSOLE
cout << "VARCHAR DATA TYPE: " << typeInfVarchar.TypeName << endl;
bool wxDB::getDbInfo(void)
{
SWORD cb;
+ RETCODE retcode;
- if (SQLGetInfo(hdbc, SQL_SERVER_NAME, (UCHAR*) dbInf.serverName, 40, &cb) != SQL_SUCCESS)
+ if (SQLGetInfo(hdbc, SQL_SERVER_NAME, (UCHAR*) dbInf.serverName, 80, &cb) != SQL_SUCCESS)
return(DispAllErrors(henv, hdbc));
if (SQLGetInfo(hdbc, SQL_DATABASE_NAME, (UCHAR*) dbInf.databaseName, 128, &cb) != SQL_SUCCESS)
if (SQLGetInfo(hdbc, SQL_DBMS_NAME, (UCHAR*) dbInf.dbmsName, 40, &cb) != SQL_SUCCESS)
return(DispAllErrors(henv, hdbc));
- if (SQLGetInfo(hdbc, SQL_DBMS_VER, (UCHAR*) dbInf.dbmsVer, 40, &cb) != SQL_SUCCESS)
+ // 16-Mar-1999
+ // After upgrading to MSVC6, the original 20 char buffer below was insufficient,
+ // causing database connectivity to fail in some cases.
+ retcode = SQLGetInfo(hdbc, SQL_DBMS_VER, (UCHAR*) dbInf.dbmsVer, 64, &cb);
+ if (retcode != SQL_SUCCESS && retcode != SQL_SUCCESS_WITH_INFO )
return(DispAllErrors(henv, hdbc));
if (SQLGetInfo(hdbc, SQL_ACTIVE_CONNECTIONS, (UCHAR*) &dbInf.maxConnections, sizeof(dbInf.maxConnections), &cb) != SQL_SUCCESS)
if (SQLGetInfo(hdbc, SQL_DRIVER_ODBC_VER, (UCHAR*) dbInf.odbcVer, 60, &cb) == SQL_ERROR)
return(DispAllErrors(henv, hdbc));
- if (SQLGetInfo(hdbc, SQL_ODBC_VER, (UCHAR*) dbInf.drvMgrOdbcVer, 60, &cb) == SQL_ERROR)
+ retcode = SQLGetInfo(hdbc, SQL_ODBC_VER, (UCHAR*) dbInf.drvMgrOdbcVer, 60, &cb);
+ if (retcode != SQL_SUCCESS && retcode != SQL_SUCCESS_WITH_INFO)
return(DispAllErrors(henv, hdbc));
if (SQLGetInfo(hdbc, SQL_DRIVER_VER, (UCHAR*) dbInf.driverVer, 60, &cb) == SQL_ERROR)
return(DispAllErrors(henv, hdbc, hstmt));
// if (SQLGetData(hstmt, 14, SQL_C_SHORT, (UCHAR*) &structSQLTypeInfo.MinimumScale, 0, &cbRet) != SQL_SUCCESS)
// return(DispAllErrors(henv, hdbc, hstmt));
- if (SQLGetData(hstmt, 15, SQL_C_SHORT, (UCHAR*) &structSQLTypeInfo.MaximumScale, 0, &cbRet) != SQL_SUCCESS)
+
+//#ifdef __UNIX__ // BJO : IODBC knows about 5, not 15...
+// if (SQLGetData(hstmt, 5, SQL_C_SHORT,(UCHAR*) &structSQLTypeInfo.MaximumScale, 0, &cbRet) != SQL_SUCCESS)
+// return(DispAllErrors(henv, hdbc, hstmt));
+//#else
+ if (SQLGetData(hstmt, 15, SQL_C_SHORT,(UCHAR*) &structSQLTypeInfo.MaximumScale, 0, &cbRet) != SQL_SUCCESS)
return(DispAllErrors(henv, hdbc, hstmt));
+//#endif
if (structSQLTypeInfo.MaximumScale < 0)
structSQLTypeInfo.MaximumScale = 0;
if (fpSqlLog)
{
fclose(fpSqlLog);
- fpSqlLog = 0; //glt
+ fpSqlLog = 0;
}
// Free statement handle
if (SQLFreeConnect(hdbc) != SQL_SUCCESS)
DispAllErrors(henv, hdbc);
+ // There should be zero Ctable objects still connected to this db object
+ assert(nTables == 0);
+
+#if __WXDEBUG__ > 0
+ CstructTablesInUse *tiu;
+ wxNode *pNode;
+ pNode = TablesInUse.First();
+ char s[80];
+ char s2[80];
+ while (pNode)
+ {
+ tiu = (CstructTablesInUse *)pNode->Data();
+ if (tiu->pDb == this)
+ {
+ sprintf(s, "(%-20s) tableID:[%6lu] pDb:[%p]", tiu->tableName,tiu->tableID,tiu->pDb);
+ sprintf(s2,"Orphaned found using pDb:[%p]",this);
+ wxMessageBox (s,s2);
+ }
+ pNode = pNode->Next();
+ }
+#endif
+
+ // Copy the error messages to a global variable
+ int i;
+ for (i = 0; i < DB_MAX_ERROR_HISTORY; i++)
+ strcpy(DBerrorList[i],errorList[i]);
+
} // wxDB::Close()
/********** wxDB::CommitTrans() **********/
bool wxDB::CommitTrans(void)
{
- // Commit the transaction
- if (SQLTransact(henv, hdbc, SQL_COMMIT) != SQL_SUCCESS)
- return(DispAllErrors(henv, hdbc));
+ if (this)
+ {
+ // Commit the transaction
+ if (SQLTransact(henv, hdbc, SQL_COMMIT) != SQL_SUCCESS)
+ return(DispAllErrors(henv, hdbc));
+ }
// Completed successfully
return(TRUE);
getchar();
#endif
}
+
+#ifdef __WXDEBUG__
+ wxMessageBox(odbcErrMsg);
+#endif
}
- return(FALSE); // This function alway's returns false.
+ return(FALSE); // This function always returns false.
} // wxDB::DispAllErrors()
if (++pLast == DB_MAX_ERROR_HISTORY)
{
- for (int i = 0; i < DB_MAX_ERROR_HISTORY; i++)
+ int i;
+ for (i = 0; i < DB_MAX_ERROR_HISTORY; i++)
strcpy(errorList[i], errorList[i+1]);
pLast--;
}
if ((dbStatus = TranslateSqlState(SQLState)) != DB_ERR_FUNCTION_SEQUENCE_ERROR)
DB_STATUS = dbStatus;
+ // Add the errmsg to the sql log
+ WriteSqlLog(errMsg);
+
} // wxDB::logError()
/**********wxDB::TranslateSqlState() **********/
} // wxDB::Grant()
/********** wxDB::CreateView() **********/
-bool wxDB::CreateView(char *viewName, char *colList, char *pSqlStmt)
+bool wxDB::CreateView(char *viewName, char *colList, char *pSqlStmt, bool attemptDrop)
{
char sqlStmt[DB_MAX_STATEMENT_LEN];
// Drop the view first
- sprintf(sqlStmt, "DROP VIEW %s", viewName);
- if (SQLExecDirect(hstmt, (UCHAR FAR *) sqlStmt, SQL_NTS) != SQL_SUCCESS)
- {
- // Check for sqlState = S0002, "Table or view not found".
- // Ignore this error, bomb out on any other error.
- // SQL Sybase Anwhere v5.5 returns an access violation error here
- // (sqlstate = 42000) rather than an S0002.
- GetNextError(henv, hdbc, hstmt);
- if (strcmp(sqlState, "S0002") && strcmp(sqlState, "42000"))
- {
- DispNextError();
- DispAllErrors(henv, hdbc, hstmt);
- RollbackTrans();
- return(FALSE);
- }
- }
-
- WriteSqlLog(sqlStmt);
-
-#ifdef DBDEBUG_CONSOLE
- cout << endl << sqlStmt << endl;
-#endif
+ if (attemptDrop && !DropView(viewName))
+ return FALSE;
// Build the create view statement
strcpy(sqlStmt, "CREATE VIEW ");
} // wxDB::CreateView()
+/********** wxDB::DropView() **********/
+bool wxDB::DropView(char *viewName)
+{
+ // NOTE: This function returns TRUE if the View does not exist, but
+ // only for identified databases. Code will need to be added
+ // below for any other databases when those databases are defined
+ // to handle this situation consistently
+
+ char sqlStmt[DB_MAX_STATEMENT_LEN];
+
+ sprintf(sqlStmt, "DROP VIEW %s", viewName);
+
+ WriteSqlLog(sqlStmt);
+
+#ifdef DBDEBUG_CONSOLE
+ cout << endl << sqlStmt << endl;
+#endif
+
+ if (SQLExecDirect(hstmt, (UCHAR FAR *) sqlStmt, SQL_NTS) != SQL_SUCCESS)
+ {
+ // Check for "Base table not found" error and ignore
+ GetNextError(henv, hdbc, hstmt);
+ if (strcmp(sqlState,"S0002")) // "Base table not found"
+ {
+ // Check for product specific error codes
+ if (!((Dbms() == dbmsSYBASE_ASA && !strcmp(sqlState,"42000")))) // 5.x (and lower?)
+ {
+ DispNextError();
+ DispAllErrors(henv, hdbc, hstmt);
+ RollbackTrans();
+ return(FALSE);
+ }
+ }
+ }
+
+ // Commit the transaction
+ if (! CommitTrans())
+ return(FALSE);
+
+ return TRUE;
+
+} // wxDB::DropView()
+
+
/********** wxDB::ExecSql() **********/
bool wxDB::ExecSql(char *pSqlStmt)
{
+ SQLFreeStmt(hstmt, SQL_CLOSE);
if (SQLExecDirect(hstmt, (UCHAR FAR *) pSqlStmt, SQL_NTS) == SQL_SUCCESS)
return(TRUE);
else
} // wxDB::ExecSql()
+/********** wxDB::GetNext() **********/
+bool wxDB::GetNext(void)
+{
+ if (SQLFetch(hstmt) == SQL_SUCCESS)
+ return(TRUE);
+ else
+ {
+ DispAllErrors(henv, hdbc, hstmt);
+ return(FALSE);
+ }
+
+} // wxDB::GetNext()
+
+/********** wxDB::GetData() **********/
+bool wxDB::GetData(UWORD colNo, SWORD cType, PTR pData, SDWORD maxLen, SDWORD FAR *cbReturned)
+{
+ assert(pData);
+ assert(cbReturned);
+
+ if (SQLGetData(hstmt, colNo, cType, pData, maxLen, cbReturned) == SQL_SUCCESS)
+ return(TRUE);
+ else
+ {
+ DispAllErrors(henv, hdbc, hstmt);
+ return(FALSE);
+ }
+
+} // wxDB::GetData()
+
/********** wxDB::GetColumns() **********/
/*
* 1) The last array element of the tableName[] argument must be zero (null).
* CALLING FUNCTION IS RESPONSIBLE FOR DELETING THE MEMORY RETURNED WHEN IT
* IS FINISHED WITH IT. i.e.
*
- * CcolInf *colInf = pDb->GetColumns(tableList);
+ * CcolInf *colInf = pDb->GetColumns(tableList, userID);
* if (colInf)
* {
* // Use the column inf
* delete [] colInf;
* }
*/
-CcolInf *wxDB::GetColumns(char *tableName[])
+CcolInf *wxDB::GetColumns(char *tableName[], char *userID)
{
UINT noCols = 0;
UINT colNo = 0;
char tblName[DB_MAX_TABLE_NAME_LEN+1];
char colName[DB_MAX_COLUMN_NAME_LEN+1];
SWORD sqlDataType;
+ char userIdUC[80+1];
+ char tableNameUC[DB_MAX_TABLE_NAME_LEN+1];
+
+ if (!userID || !strlen(userID))
+ userID = uid;
+
+ // dBase does not use user names, and some drivers fail if you try to pass one
+ if (Dbms() == dbmsDBASE)
+ userID = "";
+
+ // Oracle user names may only be in uppercase, so force
+ // the name to uppercase
+ if (Dbms() == dbmsORACLE)
+ {
+ int i = 0;
+ for (char *p = userID; *p; p++)
+ userIdUC[i++] = toupper(*p);
+ userIdUC[i] = 0;
+ userID = userIdUC;
+ }
// Pass 1 - Determine how many columns there are.
// Pass 2 - Allocate the CcolInf array and fill in
// the array with the column information.
- for (int pass = 1; pass <= 2; pass++)
+ int pass;
+ for (pass = 1; pass <= 2; pass++)
{
if (pass == 2)
{
colInf[noCols].sqlDataType = 0;
}
// Loop through each table name
- for (int tbl = 0; tableName[tbl]; tbl++)
+ int tbl;
+ for (tbl = 0; tableName[tbl]; tbl++)
{
+ // Oracle table names are uppercase only, so force
+ // the name to uppercase just in case programmer forgot to do this
+ if (Dbms() == dbmsORACLE)
+ {
+ int i = 0;
+ for (char *p = tableName[tbl]; *p; p++)
+ tableNameUC[i++] = toupper(*p);
+ tableNameUC[i] = 0;
+ }
+ else
+ sprintf(tableNameUC,tableName[tbl]);
+
SQLFreeStmt(hstmt, SQL_CLOSE);
- retcode = SQLColumns(hstmt,
- NULL, 0, // All qualifiers
- NULL, 0, // All owners
- (UCHAR *) tableName[tbl], SQL_NTS,
- NULL, 0); // All columns
+
+ // MySQL and Access cannot accept a user name when looking up column names, so we
+ // use the call below that leaves out the user name
+ if (strcmp(userID,"") &&
+ Dbms() != dbmsMY_SQL &&
+ Dbms() != dbmsACCESS)
+ {
+ retcode = SQLColumns(hstmt,
+ NULL, 0, // All qualifiers
+ (UCHAR *) userID, SQL_NTS, // Owner
+ (UCHAR *) tableNameUC, SQL_NTS,
+ NULL, 0); // All columns
+ }
+ else
+ {
+ retcode = SQLColumns(hstmt,
+ NULL, 0, // All qualifiers
+ NULL, 0, // Owner
+ (UCHAR *) tableNameUC, SQL_NTS,
+ NULL, 0); // All columns
+ }
if (retcode != SQL_SUCCESS)
{ // Error occured, abort
DispAllErrors(henv, hdbc, hstmt);
if (colInf)
delete [] colInf;
+ SQLFreeStmt(hstmt, SQL_UNBIND);
+ SQLFreeStmt(hstmt, SQL_CLOSE);
return(0);
}
SQLBindCol(hstmt, 3, SQL_C_CHAR, (UCHAR*) tblName, DB_MAX_TABLE_NAME_LEN+1, &cb);
DispAllErrors(henv, hdbc, hstmt);
if (colInf)
delete [] colInf;
+ SQLFreeStmt(hstmt, SQL_UNBIND);
+ SQLFreeStmt(hstmt, SQL_CLOSE);
return(0);
}
}
}
+ SQLFreeStmt(hstmt, SQL_UNBIND);
SQLFreeStmt(hstmt, SQL_CLOSE);
return colInf;
/********** wxDB::Catalog() **********/
bool wxDB::Catalog(char *userID, char *fileName)
{
- assert(userID && strlen(userID));
assert(fileName && strlen(fileName));
RETCODE retcode;
char tblNameSave[DB_MAX_TABLE_NAME_LEN+1];
char colName[DB_MAX_COLUMN_NAME_LEN+1];
SWORD sqlDataType;
- char typeName[16];
+ char typeName[30+1];
SWORD precision, length;
FILE *fp = fopen(fileName,"wt");
SQLFreeStmt(hstmt, SQL_CLOSE);
- int i = 0;
- char userIdUC[81];
- for (char *p = userID; *p; p++)
- userIdUC[i++] = toupper(*p);
- userIdUC[i] = 0;
-
- retcode = SQLColumns(hstmt,
- NULL, 0, // All qualifiers
- (UCHAR *) userIdUC, SQL_NTS, // User specified
- NULL, 0, // All tables
- NULL, 0); // All columns
+ if (!userID || !strlen(userID))
+ userID = uid;
+
+ char userIdUC[80+1];
+ // Oracle user names may only be in uppercase, so force
+ // the name to uppercase
+ if (Dbms() == dbmsORACLE)
+ {
+ int i = 0;
+ for (char *p = userID; *p; p++)
+ userIdUC[i++] = toupper(*p);
+ userIdUC[i] = 0;
+ userID = userIdUC;
+ }
+
+ if (strcmp(userID,""))
+ {
+ retcode = SQLColumns(hstmt,
+ NULL, 0, // All qualifiers
+ (UCHAR *) userID, SQL_NTS, // User specified
+ NULL, 0, // All tables
+ NULL, 0); // All columns
+ }
+ else
+ {
+ retcode = SQLColumns(hstmt,
+ NULL, 0, // All qualifiers
+ NULL, 0, // User specified
+ NULL, 0, // All tables
+ NULL, 0); // All columns
+ }
if (retcode != SQL_SUCCESS)
{
DispAllErrors(henv, hdbc, hstmt);
return(FALSE);
}
- SQLBindCol(hstmt, 3, SQL_C_CHAR, (UCHAR*) tblName, DB_MAX_TABLE_NAME_LEN+1, &cb);
- SQLBindCol(hstmt, 4, SQL_C_CHAR, (UCHAR*) colName, DB_MAX_COLUMN_NAME_LEN+1, &cb);
+ SQLBindCol(hstmt, 3, SQL_C_CHAR, (UCHAR*) tblName, DB_MAX_TABLE_NAME_LEN+1, &cb);
+ SQLBindCol(hstmt, 4, SQL_C_CHAR, (UCHAR*) colName, DB_MAX_COLUMN_NAME_LEN+1, &cb);
SQLBindCol(hstmt, 5, SQL_C_SSHORT, (UCHAR*) &sqlDataType, 0, &cb);
- SQLBindCol(hstmt, 6, SQL_C_CHAR, (UCHAR*) typeName, 16, &cb);
+ SQLBindCol(hstmt, 6, SQL_C_CHAR, (UCHAR*) typeName, sizeof(typeName), &cb);
SQLBindCol(hstmt, 7, SQL_C_SSHORT, (UCHAR*) &precision, 0, &cb);
SQLBindCol(hstmt, 8, SQL_C_SSHORT, (UCHAR*) &length, 0, &cb);
tblName, colName, sqlDataType, typeName, precision, length);
if (fputs(outStr, fp) == EOF)
{
+ SQLFreeStmt(hstmt, SQL_UNBIND);
+ SQLFreeStmt(hstmt, SQL_CLOSE);
fclose(fp);
return(FALSE);
}
}
if (retcode != SQL_NO_DATA_FOUND)
- {
DispAllErrors(henv, hdbc, hstmt);
- fclose(fp);
- return(FALSE);
- }
+ SQLFreeStmt(hstmt, SQL_UNBIND);
SQLFreeStmt(hstmt, SQL_CLOSE);
+
fclose(fp);
- return(TRUE);
+ return(retcode == SQL_NO_DATA_FOUND);
} // wxDB::Catalog()
// if the object exists in the database. This function does not indicate
// whether or not the user has privleges to query or perform other functions
// on the table.
-bool wxDB::TableExists(char *tableName)
+bool wxDB::TableExists(char *tableName, char *userID, char *tablePath)
{
assert(tableName && strlen(tableName));
+ if (Dbms() == dbmsDBASE)
+ {
+ wxString dbName;
+ if (tablePath && strlen(tablePath))
+ dbName.sprintf("%s/%s.dbf",tablePath,tableName);
+ else
+ dbName.sprintf("%s.dbf",tableName);
+ bool glt;
+ glt = wxFileExists(dbName.GetData());
+ return glt;
+ }
+
+ if (!userID || !strlen(userID))
+ userID = uid;
+
+ char userIdUC[80+1];
+ // Oracle user names may only be in uppercase, so force
+ // the name to uppercase
+ if (Dbms() == dbmsORACLE)
+ {
+ int i = 0;
+ for (char *p = userID; *p; p++)
+ userIdUC[i++] = toupper(*p);
+ userIdUC[i] = 0;
+ userID = userIdUC;
+ }
+
+ char tableNameUC[DB_MAX_TABLE_NAME_LEN+1];
+ // Oracle table names are uppercase only, so force
+ // the name to uppercase just in case programmer forgot to do this
+ if (Dbms() == dbmsORACLE)
+ {
+ int i = 0;
+ for (char *p = tableName; *p; p++)
+ tableNameUC[i++] = toupper(*p);
+ tableNameUC[i] = 0;
+ }
+ else
+ sprintf(tableNameUC,tableName);
+
SQLFreeStmt(hstmt, SQL_CLOSE);
- RETCODE retcode = SQLTables(hstmt,
- NULL, 0, // All qualifiers
- NULL, 0, // All owners
- (UCHAR FAR *)tableName, SQL_NTS,
- NULL, 0); // All table types
+ RETCODE retcode;
+
+ // MySQL and Access cannot accept a user name when looking up table names, so we
+ // use the call below that leaves out the user name
+ if (strcmp(userID,"") &&
+ Dbms() != dbmsMY_SQL &&
+ Dbms() != dbmsACCESS)
+ {
+ retcode = SQLTables(hstmt,
+ NULL, 0, // All qualifiers
+ (UCHAR *) userID, SQL_NTS, // All owners
+ (UCHAR FAR *)tableNameUC, SQL_NTS,
+ NULL, 0); // All table types
+ }
+ else
+ {
+ retcode = SQLTables(hstmt,
+ NULL, 0, // All qualifiers
+ NULL, 0, // All owners
+ (UCHAR FAR *)tableNameUC, SQL_NTS,
+ NULL, 0); // All table types
+ }
if (retcode != SQL_SUCCESS)
return(DispAllErrors(henv, hdbc, hstmt));
- if (SQLFetch(hstmt) != SQL_SUCCESS)
+ retcode = SQLFetch(hstmt);
+ if (retcode != SQL_SUCCESS && retcode != SQL_SUCCESS_WITH_INFO)
{
SQLFreeStmt(hstmt, SQL_CLOSE);
return(DispAllErrors(henv, hdbc, hstmt));
} // wxDB::WriteSqlLog()
+/********** wxDB::Dbms() **********/
+/*
+ * Be aware that not all database engines use the exact same syntax, and not
+ * every ODBC compliant database is compliant to the same level of compliancy.
+ * Some manufacturers support the minimum Level 1 compliancy, and others up
+ * through Level 3. Others support subsets of features for levels above 1.
+ *
+ * If you find an inconsistency between the wxDB class and a specific database
+ * engine, and an identifier to this section, and special handle the database in
+ * the area where behavior is non-conforming with the other databases.
+ *
+ *
+ * NOTES ABOUT ISSUES SPECIFIC TO EACH DATABASE ENGINE
+ * ---------------------------------------------------
+ *
+ * ORACLE
+ * - Currently the only database supported by the class to support VIEWS
+ *
+ * DBASE
+ * - Does not support the SQL_TIMESTAMP structure
+ * - Supports only one cursor and one connect (apparently? with Microsoft driver only?)
+ * - Does not automatically create the primary index if the 'keyField' param of SetColDef
+ * is TRUE. The user must create ALL indexes from their program.
+ * - Table names can only be 8 characters long
+ * - Column names can only be 10 characters long
+ *
+ * SYBASE (all)
+ * - To lock a record during QUERY functions, the reserved word 'HOLDLOCK' must be added
+ * after every table name involved in the query/join if that tables matching record(s)
+ * are to be locked
+ * - Ignores the keywords 'FOR UPDATE'. Use the HOLDLOCK functionality described above
+ *
+ * SYBASE (Enterprise)
+ * - If a column is part of the Primary Key, the column cannot be NULL
+ *
+ * MY_SQL
+ * - If a column is part of the Primary Key, the column cannot be NULL
+ * - Cannot support selecting for update [::CanSelectForUpdate()]. Always returns FALSE
+ *
+ * POSTGRES
+ * - Does not support the keywords 'ASC' or 'DESC' as of release v6.5.0
+ *
+ *
+ */
+DBMS wxDB::Dbms(void)
+{
+ if (!strnicmp(dbInf.dbmsName,"Oracle",6))
+ return(dbmsORACLE);
+ if (!stricmp(dbInf.dbmsName,"Adaptive Server Anywhere"))
+ return(dbmsSYBASE_ASA);
+ if (!stricmp(dbInf.dbmsName,"SQL Server")) // Sybase Adaptive Server Enterprise
+ return(dbmsSYBASE_ASE);
+ if (!stricmp(dbInf.dbmsName,"Microsoft SQL Server"))
+ return(dbmsMS_SQL_SERVER);
+ if (!stricmp(dbInf.dbmsName,"MySQL"))
+ return(dbmsMY_SQL);
+ if (!stricmp(dbInf.dbmsName,"PostgreSQL")) // v6.5.0
+ return(dbmsPOSTGRES);
+ if (!stricmp(dbInf.dbmsName,"ACCESS"))
+ return(dbmsACCESS);
+ if (!strnicmp(dbInf.dbmsName,"DBASE",5))
+ return(dbmsDBASE);
+ return(dbmsUNIDENTIFIED);
+
+} // wxDB::Dbms()
+
+
/********** GetDbConnection() **********/
-wxDB* WXDLLEXPORT GetDbConnection(DbStuff *pDbStuff)
+wxDB WXDLLEXPORT *GetDbConnection(DbStuff *pDbStuff)
{
DbList *pList;
// Connect to the datasource
if (pList->PtrDb->Open(pDbStuff->Dsn, pDbStuff->Uid, pDbStuff->AuthStr))
+ {
+ pList->PtrDb->SqlLog(SQLLOGstate,SQLLOGfn,TRUE);
return(pList->PtrDb);
+ }
else // Unable to connect, destroy list item
{
if (pList->PtrPrev)
} // NumberDbConnectionsInUse()
+/********** SqlLog() **********/
+bool SqlLog(enum sqlLog state, char *filename)
+{
+ bool append = FALSE;
+ DbList *pList;
+
+ for (pList = PtrBegDbList; pList; pList = pList->PtrNext)
+ {
+ if (!pList->PtrDb->SqlLog(state,filename,append))
+ return(FALSE);
+ append = TRUE;
+ }
+
+ SQLLOGstate = state;
+ strcpy(SQLLOGfn,filename);
+
+ return(TRUE);
+
+} // SqlLog()
+
/********** GetDataSource() **********/
bool GetDataSource(HENV henv, char *Dsn, SWORD DsnMax, char *DsDesc, SWORD DsDescMax,
UWORD direction)
projects / wxWidgets.git / blobdiff