]> git.saurik.com Git - wxWidgets.git/blobdiff - src/common/dbtable.cpp
Give wxListBox a GetClassDefaultAttributes so wxCalendarCtrl (and
[wxWidgets.git] / src / common / dbtable.cpp
index 5197a20326daed03b20056d7cfee36bd8c472446..bfa0dd10c8238a73e1a3003b1a0c141b40fbc5f6 100644 (file)
 // 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
-//              2) All enhancements and bug fixes are to be submitted back to the wxWindows
-//                 user groups free of all charges for use with the wxWindows library.
+//                 wxWidgets-based application
+//              2) All enhancements and bug fixes are to be submitted back to the wxWidgets
+//                 user groups free of all charges for use with the wxWidgets library.
 //              3) These classes may not be distributed as part of any other class library,
 //                 DLL, text (written or electronic), other than a complete distribution of
-//                 the wxWindows GUI development toolkit.
+//                 the wxWidgets GUI development toolkit.
 ///////////////////////////////////////////////////////////////////////////////
 
 /*
 // SYNOPSIS START
 // SYNOPSIS STOP
 */
-#ifdef __GNUG__
+
+#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
     #pragma implementation "dbtable.h"
 #endif
 
 #endif
 
 #ifdef DBDEBUG_CONSOLE
-    #include "iostream.h"
+#if wxUSE_IOSTREAMH
+    #include <iostream.h>
+#else
+    #include <iostream>
+#endif
     #include "wx/ioswrap.h"
 #endif
 
@@ -44,9 +49,6 @@
     #include "wx/object.h"
     #include "wx/list.h"
     #include "wx/utils.h"
-    #if wxUSE_GUI
-        #include "wx/msgdlg.h"
-    #endif
     #include "wx/log.h"
 #endif
 #include "wx/filefn.h"
@@ -56,7 +58,6 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
-//#include <assert.h>
 
 #include "wx/dbtable.h"
 
@@ -79,6 +80,16 @@ ULONG lastTableID = 0;
 #endif
 
 
+void csstrncpyt(wxChar *target, const wxChar *source, int n)
+{
+    while ( (*target++ = *source++) != '\0' && --n )
+        ;
+
+    *target = '\0';
+}
+
+
+
 /********** wxDbColDef::wxDbColDef() Constructor **********/
 wxDbColDef::wxDbColDef()
 {
@@ -310,21 +321,20 @@ void wxDbTable::cleanup()
 #ifdef __WXDEBUG__
     if (tableID)
     {
-        TablesInUse.DeleteContents(TRUE);
         bool found = FALSE;
 
-        wxNode *pNode;
-        pNode = TablesInUse.First();
+        wxList::compatibility_iterator pNode;
+        pNode = TablesInUse.GetFirst();
         while (pNode && !found)
         {
-            if (((wxTablesInUse *)pNode->Data())->tableID == tableID)
+            if (((wxTablesInUse *)pNode->GetData())->tableID == tableID)
             {
                 found = TRUE;
-                if (!TablesInUse.DeleteNode(pNode))
-                    wxLogDebug (s,wxT("Unable to delete node!"));
+                delete (wxTablesInUse *)pNode->GetData();
+                TablesInUse.Erase(pNode);
             }
             else
-                pNode = pNode->Next();
+                pNode = pNode->GetNext();
         }
         if (!found)
         {
@@ -399,6 +409,46 @@ ODBC 3.0 says to use this form
 /***************************** PRIVATE FUNCTIONS *****************************/
 
 
+void wxDbTable::setCbValueForColumn(int columnIndex)
+{
+    switch(colDefs[columnIndex].DbDataType)
+    {
+        case DB_DATA_TYPE_VARCHAR:
+            if (colDefs[columnIndex].Null)
+                colDefs[columnIndex].CbValue = SQL_NULL_DATA;
+            else
+                colDefs[columnIndex].CbValue = SQL_NTS;
+            break;
+        case DB_DATA_TYPE_INTEGER:
+            if (colDefs[columnIndex].Null)
+                colDefs[columnIndex].CbValue = SQL_NULL_DATA;
+            else
+                colDefs[columnIndex].CbValue = 0;
+            break;
+        case DB_DATA_TYPE_FLOAT:
+            if (colDefs[columnIndex].Null)
+                colDefs[columnIndex].CbValue = SQL_NULL_DATA;
+            else
+                colDefs[columnIndex].CbValue = 0;
+            break;
+        case DB_DATA_TYPE_DATE:
+            if (colDefs[columnIndex].Null)
+                colDefs[columnIndex].CbValue = SQL_NULL_DATA;
+            else
+                colDefs[columnIndex].CbValue = 0;
+            break;
+        case DB_DATA_TYPE_BLOB:
+            if (colDefs[columnIndex].Null)
+                colDefs[columnIndex].CbValue = SQL_NULL_DATA;
+            else
+                if (colDefs[columnIndex].SqlCtype == SQL_C_CHAR)
+                    colDefs[columnIndex].CbValue = SQL_NTS;
+                else
+                    colDefs[columnIndex].CbValue = SQL_LEN_DATA_AT_EXEC(colDefs[columnIndex].SzDataObj);
+            break;
+    }
+}
+
 /********** wxDbTable::bindParams() **********/
 bool wxDbTable::bindParams(bool forUpdate)
 {
@@ -407,7 +457,7 @@ bool wxDbTable::bindParams(bool forUpdate)
         return(FALSE);
 
     SWORD   fSqlType    = 0;
-    UDWORD  precision   = 0;
+    SDWORD  precision   = 0;
     SWORD   scale       = 0;
 
     // Bind each column of the table that should be bound
@@ -434,19 +484,11 @@ bool wxDbTable::bindParams(bool forUpdate)
                 fSqlType = pDb->GetTypeInfVarchar().FsqlType;
                 precision = colDefs[i].SzDataObj;
                 scale = 0;
-                if (colDefs[i].Null)
-                    colDefs[i].CbValue = SQL_NULL_DATA;
-                else
-                    colDefs[i].CbValue = SQL_NTS;
                 break;
             case DB_DATA_TYPE_INTEGER:
                 fSqlType = pDb->GetTypeInfInteger().FsqlType;
                 precision = pDb->GetTypeInfInteger().Precision;
                 scale = 0;
-                if (colDefs[i].Null)
-                    colDefs[i].CbValue = SQL_NULL_DATA;
-                else
-                    colDefs[i].CbValue = 0;
                 break;
             case DB_DATA_TYPE_FLOAT:
                 fSqlType = pDb->GetTypeInfFloat().FsqlType;
@@ -457,30 +499,21 @@ bool wxDbTable::bindParams(bool forUpdate)
                 // I check for this here and set the scale = precision.
                 //if (scale < 0)
                 // scale = (short) precision;
-                if (colDefs[i].Null)
-                    colDefs[i].CbValue = SQL_NULL_DATA;
-                else
-                    colDefs[i].CbValue = 0;
                 break;
             case DB_DATA_TYPE_DATE:
                 fSqlType = pDb->GetTypeInfDate().FsqlType;
                 precision = pDb->GetTypeInfDate().Precision;
                 scale = 0;
-                if (colDefs[i].Null)
-                    colDefs[i].CbValue = SQL_NULL_DATA;
-                else
-                    colDefs[i].CbValue = 0;
                 break;
             case DB_DATA_TYPE_BLOB:
                 fSqlType = pDb->GetTypeInfBlob().FsqlType;
-                precision = 50000;
+                precision = colDefs[i].SzDataObj;
                 scale = 0;
-                if (colDefs[i].Null)
-                    colDefs[i].CbValue = SQL_NULL_DATA;
-                else
-                    colDefs[i].CbValue = SQL_LEN_DATA_AT_EXEC(colDefs[i].SzDataObj);
                 break;
         }
+
+        setCbValueForColumn(i);
+
         if (forUpdate)
         {
             if (SQLBindParameter(hstmtUpdate, colNo++, SQL_PARAM_INPUT, colDefs[i].SqlCtype,
@@ -494,7 +527,7 @@ bool wxDbTable::bindParams(bool forUpdate)
         {
             if (SQLBindParameter(hstmtInsert, colNo++, SQL_PARAM_INPUT, colDefs[i].SqlCtype,
                                  fSqlType, precision, scale, (UCHAR*) colDefs[i].PtrDataObj,
-                                 precision+1,&colDefs[i].CbValue) != SQL_SUCCESS)
+                                 precision+1, &colDefs[i].CbValue) != SQL_SUCCESS)
             {
                 return(pDb->DispAllErrors(henv, hdbc, hstmtInsert));
             }
@@ -524,15 +557,16 @@ bool wxDbTable::bindUpdateParams(void)
 /********** wxDbTable::bindCols() **********/
 bool wxDbTable::bindCols(HSTMT cursor)
 {
+    static SDWORD cb;
+
     // Bind each column of the table to a memory address for fetching data
     UWORD i;
     for (i = 0; i < noCols; i++)
     {
+        cb = colDefs[i].CbValue;
         if (SQLBindCol(cursor, (UWORD)(i+1), colDefs[i].SqlCtype, (UCHAR*) colDefs[i].PtrDataObj,
-                       colDefs[i].SzDataObj, &colDefs[i].CbValue ) != SQL_SUCCESS)
-        {
+                       colDefs[i].SzDataObj, &cb ) != SQL_SUCCESS)
           return (pDb->DispAllErrors(henv, hdbc, cursor));
-        }
     }
 
     // Completed successfully
@@ -602,7 +636,7 @@ bool wxDbTable::execDelete(const wxString &pSqlStmt)
     RETCODE retcode;
 
     // Execute the DELETE statement
-    retcode = SQLExecDirect(hstmtDelete, (UCHAR FAR *) pSqlStmt.c_str(), SQL_NTS);
+    retcode = SQLExecDirect(hstmtDelete, (SQLTCHAR FAR *) pSqlStmt.c_str(), SQL_NTS);
 
     if (retcode == SQL_SUCCESS ||
         retcode == SQL_NO_DATA_FOUND ||
@@ -624,7 +658,7 @@ bool wxDbTable::execUpdate(const wxString &pSqlStmt)
     RETCODE retcode;
 
     // Execute the UPDATE statement
-    retcode = SQLExecDirect(hstmtUpdate, (UCHAR FAR *) pSqlStmt.c_str(), SQL_NTS);
+    retcode = SQLExecDirect(hstmtUpdate, (SQLTCHAR FAR *) pSqlStmt.c_str(), SQL_NTS);
 
     if (retcode == SQL_SUCCESS ||
         retcode == SQL_NO_DATA_FOUND ||
@@ -633,6 +667,38 @@ bool wxDbTable::execUpdate(const wxString &pSqlStmt)
         // Record updated successfully
         return(TRUE);
     }
+    else if (retcode == SQL_NEED_DATA)
+    {
+        PTR pParmID;
+        retcode = SQLParamData(hstmtUpdate, &pParmID);
+        while (retcode == SQL_NEED_DATA)
+        {
+            // Find the parameter
+            int i;
+            for (i=0; i < noCols; i++)
+            {
+                if (colDefs[i].PtrDataObj == pParmID)
+                {
+                    // We found it.  Store the parameter.
+                    retcode = SQLPutData(hstmtUpdate, pParmID, colDefs[i].SzDataObj);
+                    if (retcode != SQL_SUCCESS)
+                    {
+                        pDb->DispNextError();
+                        return pDb->DispAllErrors(henv, hdbc, hstmtUpdate);
+                    }
+                    break;
+                }
+            }
+            retcode = SQLParamData(hstmtUpdate, &pParmID);
+        }
+        if (retcode == SQL_SUCCESS ||
+            retcode == SQL_NO_DATA_FOUND ||
+            retcode == SQL_SUCCESS_WITH_INFO)
+        {
+            // Record updated successfully
+            return(TRUE);
+        }
+    }
 
     // Problem updating record
     return(pDb->DispAllErrors(henv, hdbc, hstmtUpdate));
@@ -664,7 +730,7 @@ bool wxDbTable::query(int queryType, bool forUpdate, bool distinct, const wxStri
 
     // Execute the SQL SELECT statement
     int retcode;
-    retcode = SQLExecDirect(hstmt, (UCHAR FAR *) (queryType == DB_SELECT_STATEMENT ? pSqlStmt.c_str() : sqlStmt.c_str()), SQL_NTS);
+    retcode = SQLExecDirect(hstmt, (SQLTCHAR FAR *) (queryType == DB_SELECT_STATEMENT ? pSqlStmt.c_str() : sqlStmt.c_str()), SQL_NTS);
     if (retcode != SQL_SUCCESS && retcode != SQL_SUCCESS_WITH_INFO)
         return(pDb->DispAllErrors(henv, hdbc, hstmt));
 
@@ -795,11 +861,11 @@ bool wxDbTable::Open(bool checkPrivileges, bool checkTableExists)
         // Prepare the insert statement for execution
         if (insertableCount)
         {
-            if (SQLPrepare(hstmtInsert, (UCHAR FAR *) sqlStmt.c_str(), SQL_NTS) != SQL_SUCCESS)
+            if (SQLPrepare(hstmtInsert, (SQLTCHAR FAR *) sqlStmt.c_str(), SQL_NTS) != SQL_SUCCESS)
                 return(pDb->DispAllErrors(henv, hdbc, hstmtInsert));
         }
         else
-            insertable= FALSE;
+            insertable = FALSE;
     }
 
     // Completed successfully
@@ -999,17 +1065,17 @@ void wxDbTable::BuildSelectStmt(wxString &pSqlStmt, int typeOfSelect, bool disti
 
     // Add the column list
     int i;
+    wxString tStr;
     for (i = 0; i < noCols; i++)
     {
+        tStr = colDefs[i].ColName;
         // If joining tables, the base table column names must be qualified to avoid ambiguity
-        if (appendFromClause || pDb->Dbms() == dbmsACCESS)
+        if ((appendFromClause || pDb->Dbms() == dbmsACCESS) && tStr.Find(wxT('.')) == wxNOT_FOUND)
         {
             pSqlStmt += pDb->SQLTableName(queryTableName.c_str());
-//            pSqlStmt += queryTableName;
             pSqlStmt += wxT(".");
         }
         pSqlStmt += pDb->SQLColumnName(colDefs[i].ColName);
-//        pSqlStmt += colDefs[i].ColName;
         if (i + 1 < noCols)
             pSqlStmt += wxT(",");
     }
@@ -1121,7 +1187,7 @@ void wxDbTable::BuildUpdateStmt(wxString &pSqlStmt, int typeOfUpd, const wxStrin
     bool firstColumn = TRUE;
 
     pSqlStmt.Printf(wxT("UPDATE %s SET "),
-                    pDb->SQLTableName(tableName.Upper().c_str()).c_str());
+                    pDb->SQLTableName(tableName.c_str()).c_str());
 
     // Append a list of columns to be updated
     int i;
@@ -1198,56 +1264,69 @@ void wxDbTable::BuildWhereClause(wxString &pWhereClause, int typeOfWhere,
     wxString colValue;
 
     // Loop through the columns building a where clause as you go
-    int i;
-    for (i = 0; i < noCols; i++)
+    int colNo;
+    for (colNo = 0; colNo < noCols; colNo++)
     {
         // Determine if this column should be included in the WHERE clause
-        if ((typeOfWhere == DB_WHERE_KEYFIELDS && colDefs[i].KeyField) ||
-             (typeOfWhere == DB_WHERE_MATCHING  && (!IsColNull(i))))
+        if ((typeOfWhere == DB_WHERE_KEYFIELDS && colDefs[colNo].KeyField) ||
+             (typeOfWhere == DB_WHERE_MATCHING  && (!IsColNull(colNo))))
         {
             // Skip over timestamp columns
-            if (colDefs[i].SqlCtype == SQL_C_TIMESTAMP)
+            if (colDefs[colNo].SqlCtype == SQL_C_TIMESTAMP)
                 continue;
             // If there is more than 1 column, join them with the keyword "AND"
             if (moreThanOneColumn)
                 pWhereClause += wxT(" AND ");
             else
                 moreThanOneColumn = TRUE;
+
             // Concatenate where phrase for the column
-            if (qualTableName.Length())
+            wxString tStr = colDefs[colNo].ColName;
+
+            if (qualTableName.Length() && tStr.Find(wxT('.')) == wxNOT_FOUND)
             {
                 pWhereClause += pDb->SQLTableName(qualTableName);
-//                pWhereClause += qualTableName;
                 pWhereClause += wxT(".");
             }
-            pWhereClause += pDb->SQLColumnName(colDefs[i].ColName);
-//            pWhereClause += colDefs[i].ColName;
-            if (useLikeComparison && (colDefs[i].SqlCtype == SQL_C_CHAR))
+            pWhereClause += pDb->SQLColumnName(colDefs[colNo].ColName);
+
+            if (useLikeComparison && (colDefs[colNo].SqlCtype == SQL_C_CHAR))
                 pWhereClause += wxT(" LIKE ");
             else
                 pWhereClause += wxT(" = ");
-            switch(colDefs[i].SqlCtype)
+
+            switch(colDefs[colNo].SqlCtype)
             {
                 case SQL_C_CHAR:
-                    colValue.Printf(wxT("'%s'"), (UCHAR FAR *) colDefs[i].PtrDataObj);
+                    colValue.Printf(wxT("'%s'"), (UCHAR FAR *) colDefs[colNo].PtrDataObj);
                     break;
+                case SQL_C_SHORT:
                 case SQL_C_SSHORT:
-                    colValue.Printf(wxT("%hi"), *((SWORD *) colDefs[i].PtrDataObj));
+                    colValue.Printf(wxT("%hi"), *((SWORD *) colDefs[colNo].PtrDataObj));
                     break;
                 case SQL_C_USHORT:
-                    colValue.Printf(wxT("%hu"), *((UWORD *) colDefs[i].PtrDataObj));
+                    colValue.Printf(wxT("%hu"), *((UWORD *) colDefs[colNo].PtrDataObj));
                     break;
+                case SQL_C_LONG:
                 case SQL_C_SLONG:
-                    colValue.Printf(wxT("%li"), *((SDWORD *) colDefs[i].PtrDataObj));
+                    colValue.Printf(wxT("%li"), *((SDWORD *) colDefs[colNo].PtrDataObj));
                     break;
                 case SQL_C_ULONG:
-                    colValue.Printf(wxT("%lu"), *((UDWORD *) colDefs[i].PtrDataObj));
+                    colValue.Printf(wxT("%lu"), *((UDWORD *) colDefs[colNo].PtrDataObj));
                     break;
                 case SQL_C_FLOAT:
-                    colValue.Printf(wxT("%.6f"), *((SFLOAT *) colDefs[i].PtrDataObj));
+                    colValue.Printf(wxT("%.6f"), *((SFLOAT *) colDefs[colNo].PtrDataObj));
                     break;
                 case SQL_C_DOUBLE:
-                    colValue.Printf(wxT("%.6f"), *((SDOUBLE *) colDefs[i].PtrDataObj));
+                    colValue.Printf(wxT("%.6f"), *((SDOUBLE *) colDefs[colNo].PtrDataObj));
+                    break;
+                default:
+                    {
+                        wxString strMsg;
+                        strMsg.Printf(wxT("wxDbTable::bindParams(): Unknown column type for colDefs %d colName %s"),
+                                    colNo,colDefs[colNo].ColName);
+                        wxFAIL_MSG(strMsg.c_str());
+                    }
                     break;
             }
             pWhereClause += colValue;
@@ -1380,7 +1459,8 @@ bool wxDbTable::CreateTable(bool attemptDrop)
                 break;
         }
         // For varchars, append the size of the string
-        if (colDefs[i].DbDataType == DB_DATA_TYPE_VARCHAR)// ||
+        if (colDefs[i].DbDataType == DB_DATA_TYPE_VARCHAR &&
+            (pDb->Dbms() != dbmsMY_SQL || pDb->GetTypeInfVarchar().TypeName != _T("text")))// ||
 //            colDefs[i].DbDataType == DB_DATA_TYPE_BLOB)
         {
             wxString s;
@@ -1411,7 +1491,8 @@ bool wxDbTable::CreateTable(bool attemptDrop)
             break;
         }
     }
-    if (j && pDb->Dbms() != dbmsDBASE)  // Found a keyfield
+    if ( j && (pDb->Dbms() != dbmsDBASE)
+        && (pDb->Dbms() != dbmsXBASE_SEQUITER) )  // Found a keyfield
     {
         switch (pDb->Dbms())
         {
@@ -1452,7 +1533,14 @@ bool wxDbTable::CreateTable(bool attemptDrop)
                 if (j++) // Multi part key, comma separate names
                     sqlStmt += wxT(",");
                 sqlStmt += pDb->SQLColumnName(colDefs[i].ColName);
-//                sqlStmt += colDefs[i].ColName;
+
+                if (pDb->Dbms() == dbmsMY_SQL &&
+                    colDefs[i].DbDataType ==  DB_DATA_TYPE_VARCHAR)
+                {
+                    wxString s;
+                    s.Printf(wxT("(%d)"), colDefs[i].SzDataObj);
+                    sqlStmt += s;
+                }
             }
         }
         sqlStmt += wxT(")");
@@ -1477,7 +1565,7 @@ bool wxDbTable::CreateTable(bool attemptDrop)
 #endif
 
     // Execute the CREATE TABLE statement
-    RETCODE retcode = SQLExecDirect(hstmt, (UCHAR FAR *) sqlStmt.c_str(), SQL_NTS);
+    RETCODE retcode = SQLExecDirect(hstmt, (SQLTCHAR FAR *) sqlStmt.c_str(), SQL_NTS);
     if (retcode != SQL_SUCCESS && retcode != SQL_SUCCESS_WITH_INFO)
     {
         pDb->DispAllErrors(henv, hdbc, hstmt);
@@ -1517,7 +1605,7 @@ bool wxDbTable::DropTable()
     cout << endl << sqlStmt.c_str() << endl;
 #endif
 
-    RETCODE retcode = SQLExecDirect(hstmt, (UCHAR FAR *) sqlStmt.c_str(), SQL_NTS);
+    RETCODE retcode = SQLExecDirect(hstmt, (SQLTCHAR FAR *) sqlStmt.c_str(), SQL_NTS);
     if (retcode != SQL_SUCCESS)
     {
         // Check for "Base table not found" error and ignore
@@ -1597,11 +1685,14 @@ bool wxDbTable::CreateIndex(const wxString &idxName, bool unique, UWORD noIdxCol
 
                 if (!ok)
                 {
+                    #if 0
+                    // retcode is not used
                     wxODBC_ERRORS retcode;
                     // Oracle returns a DB_ERR_GENERAL_ERROR if the column is already
                     // defined to be NOT NULL, but reportedly MySQL doesn't mind.
                     // This line is just here for debug checking of the value
                     retcode = (wxODBC_ERRORS)pDb->DB_STATUS;
+                    #endif
                 }
             }
             else
@@ -1636,8 +1727,28 @@ bool wxDbTable::CreateIndex(const wxString &idxName, bool unique, UWORD noIdxCol
         sqlStmt += pDb->SQLColumnName(pIdxDefs[i].ColName);
 //        sqlStmt += pIdxDefs[i].ColName;
 
+        // MySQL requires a key length on VARCHAR keys
+        if ( pDb->Dbms() == dbmsMY_SQL )
+        {
+            // Find the details on this column
+            int j;
+            for ( j = 0; j < noCols; ++j )
+            {
+                if ( wxStrcmp( pIdxDefs[i].ColName, colDefs[j].ColName ) == 0 )
+                {
+                    break;
+                }
+            }
+            if ( colDefs[j].DbDataType ==  DB_DATA_TYPE_VARCHAR)
+            {
+                wxString s;
+                s.Printf(wxT("(%d)"), colDefs[i].SzDataObj);
+                sqlStmt += s;
+            }
+        }
+        
         // Postgres and SQL Server 7 do not support the ASC/DESC keywords for index columns
-        if (!((pDb->Dbms() == dbmsMS_SQL_SERVER) && (strncmp(pDb->dbInf.dbmsVer,"07",2)==0)) &&
+        if (!((pDb->Dbms() == dbmsMS_SQL_SERVER) && (wxStrncmp(pDb->dbInf.dbmsVer,_T("07"),2)==0)) &&
             !(pDb->Dbms() == dbmsPOSTGRES))
         {
             if (pIdxDefs[i].Ascending)
@@ -1646,7 +1757,7 @@ bool wxDbTable::CreateIndex(const wxString &idxName, bool unique, UWORD noIdxCol
                 sqlStmt += wxT(" DESC");
         }
         else
-            wxASSERT_MSG(pIdxDefs[i].Ascending, "Datasource does not support DESCending index columns");
+            wxASSERT_MSG(pIdxDefs[i].Ascending, _T("Datasource does not support DESCending index columns"));
 
         if ((i + 1) < noIdxCols)
             sqlStmt += wxT(",");
@@ -1662,7 +1773,7 @@ bool wxDbTable::CreateIndex(const wxString &idxName, bool unique, UWORD noIdxCol
 #endif
 
     // Execute the CREATE INDEX statement
-    if (SQLExecDirect(hstmt, (UCHAR FAR *) sqlStmt.c_str(), SQL_NTS) != SQL_SUCCESS)
+    if (SQLExecDirect(hstmt, (SQLTCHAR FAR *) sqlStmt.c_str(), SQL_NTS) != SQL_SUCCESS)
     {
         pDb->DispAllErrors(henv, hdbc, hstmt);
         pDb->RollbackTrans();
@@ -1698,7 +1809,8 @@ bool wxDbTable::DropIndex(const wxString &idxName)
                        pDb->SQLTableName(idxName.c_str()).c_str(),
                        pDb->SQLTableName(tableName.c_str()).c_str());
     else if ((pDb->Dbms() == dbmsMS_SQL_SERVER) ||
-             (pDb->Dbms() == dbmsSYBASE_ASE))
+             (pDb->Dbms() == dbmsSYBASE_ASE) ||
+             (pDb->Dbms() == dbmsXBASE_SEQUITER))
         sqlStmt.Printf(wxT("DROP INDEX %s.%s"),
                        pDb->SQLTableName(tableName.c_str()).c_str(),
                        pDb->SQLTableName(idxName.c_str()).c_str());
@@ -1712,7 +1824,7 @@ bool wxDbTable::DropIndex(const wxString &idxName)
     cout << endl << sqlStmt.c_str() << endl;
 #endif
 
-    if (SQLExecDirect(hstmt, (UCHAR FAR *) sqlStmt.c_str(), SQL_NTS) != SQL_SUCCESS)
+    if (SQLExecDirect(hstmt, (SQLTCHAR FAR *) sqlStmt.c_str(), SQL_NTS) != SQL_SUCCESS)
     {
         // Check for "Index not found" error and ignore
         pDb->GetNextError(henv, hdbc, hstmt);
@@ -1795,7 +1907,8 @@ int wxDbTable::Insert(void)
     // Insert the record by executing the already prepared insert statement
     RETCODE retcode;
     retcode=SQLExecute(hstmtInsert);
-    if (retcode != SQL_SUCCESS && retcode != SQL_SUCCESS_WITH_INFO)
+    if (retcode != SQL_SUCCESS && retcode != SQL_SUCCESS_WITH_INFO &&
+        retcode != SQL_NEED_DATA)
     {
         // Check to see if integrity constraint was violated
         pDb->GetNextError(henv, hdbc, hstmtInsert);
@@ -1808,6 +1921,40 @@ int wxDbTable::Insert(void)
             return(DB_FAILURE);
         }
     }
+    if (retcode == SQL_NEED_DATA)
+    {
+        PTR pParmID;
+        retcode = SQLParamData(hstmtInsert, &pParmID);
+        while (retcode == SQL_NEED_DATA)
+        {
+            // Find the parameter
+            int i;
+            for (i=0; i < noCols; i++)
+            {
+                if (colDefs[i].PtrDataObj == pParmID)
+                {
+                    // We found it.  Store the parameter.
+                    retcode = SQLPutData(hstmtInsert, pParmID, colDefs[i].SzDataObj);
+                    if (retcode != SQL_SUCCESS)
+                    {
+                        pDb->DispNextError();
+                        pDb->DispAllErrors(henv, hdbc, hstmtInsert);
+                        return(DB_FAILURE);
+                    }
+                    break;
+                }
+            }
+            retcode = SQLParamData(hstmtInsert, &pParmID);
+            if (retcode != SQL_SUCCESS &&
+                retcode != SQL_SUCCESS_WITH_INFO)
+            {
+                // record was not inserted
+                pDb->DispNextError();
+                pDb->DispAllErrors(henv, hdbc, hstmtInsert);
+                return(DB_FAILURE);
+            }
+        }
+    }
 
     // Record inserted into the datasource successfully
     return(DB_SUCCESS);
@@ -2106,6 +2253,9 @@ void wxDbTable::SetColDefs(UWORD index, const wxString &fieldName, int dataType,
                            SWORD cType, int size, bool keyField, bool upd,
                            bool insAllow, bool derivedCol)
 {
+    wxASSERT_MSG( index < noCols,
+                  _T("Specified column index exceeds the maximum number of columns for this table.") );
+
     if (!colDefs)  // May happen if the database connection fails
         return;
 
@@ -2285,7 +2435,7 @@ ULONG wxDbTable::Count(const wxString &args)
     }
 
     // Execute the SQL statement
-    if (SQLExecDirect(*hstmtCount, (UCHAR FAR *) sqlStmt.c_str(), SQL_NTS) != SQL_SUCCESS)
+    if (SQLExecDirect(*hstmtCount, (SQLTCHAR FAR *) sqlStmt.c_str(), SQL_NTS) != SQL_SUCCESS)
     {
         pDb->DispAllErrors(henv, hdbc, *hstmtCount);
         return(0);
@@ -2325,8 +2475,8 @@ bool wxDbTable::Refresh(void)
     hstmt = hstmtInternal;
 #if wxODBC_BACKWARD_COMPATABILITY
     // Save the where and order by clauses
-    char *saveWhere = where;
-    char *saveOrderBy = orderBy;
+    wxChar *saveWhere = where;
+    wxChar *saveOrderBy = orderBy;
 #else
     wxString saveWhere = where;
     wxString saveOrderBy = orderBy;
@@ -2390,7 +2540,10 @@ bool wxDbTable::SetColNull(UWORD colNo, bool set)
     {
         colDefs[colNo].Null = set;
         if (set)  // Blank out the values in the member variable
-            ClearMemberVar(colNo,FALSE);  // Must call with FALSE, or infinite recursion will happen
+           ClearMemberVar(colNo, FALSE);  // Must call with FALSE here, or infinite recursion will happen
+
+        setCbValueForColumn(colNo);
+
         return(TRUE);
     }
     else
@@ -2402,18 +2555,21 @@ bool wxDbTable::SetColNull(UWORD colNo, bool set)
 /********** wxDbTable::SetColNull() **********/
 bool wxDbTable::SetColNull(const wxString &colName, bool set)
 {
-    int i;
-    for (i = 0; i < noCols; i++)
+    int colNo;
+    for (colNo = 0; colNo < noCols; colNo++)
     {
-        if (!wxStricmp(colName, colDefs[i].ColName))
+        if (!wxStricmp(colName, colDefs[colNo].ColName))
             break;
     }
 
-    if (i < noCols)
+    if (colNo < noCols)
     {
-        colDefs[i].Null = set;
+        colDefs[colNo].Null = set;
         if (set)  // Blank out the values in the member variable
-            ClearMemberVar(i,FALSE);  // Must call with FALSE, or infinite recursion will happen
+           ClearMemberVar(colNo,FALSE);  // Must call with FALSE here, or infinite recursion will happen
+
+        setCbValueForColumn(colNo);
+
         return(TRUE);
     }
     else
@@ -2509,7 +2665,7 @@ void wxDbTable::SetRowMode(const rowmode_t rowmode)
             SetCursor(hstmtDefault);
             break;
         default:
-            assert(0);
+           wxASSERT(0);
     }
 }  // wxDbTable::SetRowMode()
 
@@ -2537,10 +2693,10 @@ wxVariant wxDbTable::GetCol(const int colNo) const
                 val = (long)(*(unsigned long *)(colDefs[colNo].PtrDataObj));
                 break;
             case SQL_C_TINYINT:
-                val = (long)(*(char *)(colDefs[colNo].PtrDataObj));
+                val = (long)(*(wxChar *)(colDefs[colNo].PtrDataObj));
                 break;
             case SQL_C_UTINYINT:
-                val = (long)(*(unsigned char *)(colDefs[colNo].PtrDataObj));
+                val = (long)(*(wxChar *)(colDefs[colNo].PtrDataObj));
                 break;
             case SQL_C_USHORT:
                 val = (long)(*(UWORD *)(colDefs[colNo].PtrDataObj));
@@ -2565,14 +2721,6 @@ wxVariant wxDbTable::GetCol(const int colNo) const
 }  // wxDbTable::GetCol()
 
 
-void csstrncpyt(char *s, const char *t, int n)
-{
-    while ((*s++ = *t++) && --n)
-    {};
-
-    *s = '\0';
-}
-
 void wxDbTable::SetCol(const int colNo, const wxVariant val)
 {
     //FIXME: Add proper wxDateTime support to wxVariant..
@@ -2595,7 +2743,7 @@ void wxDbTable::SetCol(const int colNo, const wxVariant val)
         {
             case SQL_CHAR:
             case SQL_VARCHAR:
-                csstrncpyt((char *)(colDefs[colNo].PtrDataObj),
+                csstrncpyt((wxChar *)(colDefs[colNo].PtrDataObj),
                            val.GetString().c_str(),
                            colDefs[colNo].SzDataObj-1);
                 break;
@@ -2611,10 +2759,10 @@ void wxDbTable::SetCol(const int colNo, const wxVariant val)
                 *(unsigned long *)(colDefs[colNo].PtrDataObj) = val.GetLong();
                 break;
             case SQL_C_TINYINT:
-                *(char *)(colDefs[colNo].PtrDataObj) = val.GetChar();
+                *(wxChar *)(colDefs[colNo].PtrDataObj) = val.GetChar();
                 break;
             case SQL_C_UTINYINT:
-                *(unsigned char *)(colDefs[colNo].PtrDataObj) = val.GetChar();
+                *(wxChar *)(colDefs[colNo].PtrDataObj) = val.GetChar();
                 break;
             case SQL_C_USHORT:
                 *(unsigned short *)(colDefs[colNo].PtrDataObj) = val.GetLong();