Committing in .

[wxWidgets.git] / src / common / db.cpp

diff --git a/src/common/db.cpp b/src/common/db.cpp
index f0cb57a8fa0fc21141d6389b9dd5880c9f61e852..f32276faf062f9380722bbaabbd11af834f1cc7a 100644 (file)
--- a/src/common/db.cpp
+++ b/src/common/db.cpp
@@ -34,53 +34,32 @@
 // SYNOPSIS START
 // SYNOPSIS STOP
 */
 // SYNOPSIS START
 // SYNOPSIS STOP
 */

+#ifdef __GNUG__
+    #pragma implementation "db.h"
+#endif

 
 #include "wx/wxprec.h"
 
 
 #include "wx/wxprec.h"
 

-
-// Use this line for wxWindows v1.x
-//#include "wx_ver.h"
-// Use this line for wxWindows v2.x
-#include "wx/version.h"
-
-#if wxMAJOR_VERSION == 2
-    #ifdef __GNUG__
-        #pragma implementation "db.h"
-    #endif
+#ifdef __BORLANDC__
+    #pragma hdrstop

 #endif
 
 #ifdef DBDEBUG_CONSOLE
     #include "wx/ioswrap.h"
 #endif
 
 #endif
 
 #ifdef DBDEBUG_CONSOLE
     #include "wx/ioswrap.h"
 #endif
 

-#ifdef    __BORLANDC__
-    #pragma hdrstop
-#endif  //__BORLANDC__
-
-#if wxMAJOR_VERSION == 2
-    #ifndef WX_PRECOMP
-        #include "wx/string.h"
-        #include "wx/object.h"
-        #include "wx/list.h"
-        #include "wx/utils.h"
+#ifndef WX_PRECOMP
+    #include "wx/string.h"
+    #include "wx/object.h"
+    #include "wx/list.h"
+    #include "wx/utils.h"
+    #if wxUSE_GUI

         #include "wx/msgdlg.h"
         #include "wx/msgdlg.h"

-        #include "wx/log.h"

     #endif
     #endif

-    #include "wx/filefn.h"
-    #include "wx/wxchar.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
+    #include "wx/log.h"

 #endif
 #endif

+#include "wx/filefn.h"
+#include "wx/wxchar.h"

 
 #if wxUSE_ODBC
 
 
 #if wxUSE_ODBC
 


@@ -90,11 +69,7 @@
 #include <stdlib.h>
 #include <ctype.h>
 
 #include <stdlib.h>
 #include <ctype.h>
 

-#if   wxMAJOR_VERSION == 1
-    #include "db.h"
-#elif wxMAJOR_VERSION == 2
-    #include "wx/db.h"
-#endif
+#include "wx/db.h"

 
 WXDLLEXPORT_DATA(wxDbList*) PtrBegDbList = 0;
 
 
 WXDLLEXPORT_DATA(wxDbList*) PtrBegDbList = 0;
 


@@ -121,6 +96,7 @@ static wxString SQLLOGfn = SQL_LOG_FILENAME;
 // connection
 wxChar DBerrorList[DB_MAX_ERROR_HISTORY][DB_MAX_ERROR_MSG_LEN];
 
 // connection
 wxChar DBerrorList[DB_MAX_ERROR_HISTORY][DB_MAX_ERROR_MSG_LEN];
 

+

 // This type defines the return row-struct form
 // SQLTablePrivileges, and is used by wxDB::TablePrivileges.
 typedef struct
 // This type defines the return row-struct form
 // SQLTablePrivileges, and is used by wxDB::TablePrivileges.
 typedef struct


@@ -366,9 +342,9 @@ int wxDbColFor::Format(int Nation, int dbDataType, SWORD sqlDataType,
                 s_Field = wxT("%02d/%02d/%04d %02d:%02d:%02d.%03d");
             }
             break;
                 s_Field = wxT("%02d/%02d/%04d %02d:%02d:%02d.%03d");
             }
             break;

-                 case DB_DATA_TYPE_BLOB:
+          case DB_DATA_TYPE_BLOB:

             s_Field.Printf(wxT("Unable to format(%d)-SQL(%d)"),dbDataType,sqlDataType);        //
             s_Field.Printf(wxT("Unable to format(%d)-SQL(%d)"),dbDataType,sqlDataType);        //

-                               break;
+                break;

         default:
             s_Field.Printf(wxT("Unknown Format(%d)-SQL(%d)"),dbDataType,sqlDataType);        //
             break;
         default:
             s_Field.Printf(wxT("Unknown Format(%d)-SQL(%d)"),dbDataType,sqlDataType);        //
             break;


@@ -475,7 +451,7 @@ bool wxDbInf::Initialize()
 }  // wxDbInf::Initialize()
 
 
 }  // wxDbInf::Initialize()
 
 

-/********** wxDb Constructors **********/
+/********** wxDb Constructor **********/

 wxDb::wxDb(const HENV &aHenv, bool FwdOnlyCursors)
 {
     // Copy the HENV into the db class
 wxDb::wxDb(const HENV &aHenv, bool FwdOnlyCursors)
 {
     // Copy the HENV into the db class


@@ -486,6 +462,19 @@ wxDb::wxDb(const HENV &aHenv, bool FwdOnlyCursors)
 } // wxDb::wxDb()
 
 
 } // wxDb::wxDb()
 
 

+/********** wxDb Destructor **********/
+wxDb::~wxDb()
+{
+    wxASSERT_MSG(!IsCached(),wxT("Cached connections must not be manually deleted, use\nwxDbFreeConnection() or wxDbCloseConnections()."));
+
+    if (IsOpen())
+    {
+        Close();
+    }
+}  // wxDb destructor
+
+
+

 /********** PRIVATE! wxDb::initialize PRIVATE! **********/
 /********** wxDb::initialize() **********/
 void wxDb::initialize()
 /********** PRIVATE! wxDb::initialize PRIVATE! **********/
 /********** wxDb::initialize() **********/
 void wxDb::initialize()


@@ -550,6 +539,7 @@ void wxDb::initialize()
 
     // Mark database as not open as of yet
     dbIsOpen = FALSE;
 
     // Mark database as not open as of yet
     dbIsOpen = FALSE;

+    dbIsCached = FALSE;

 }  // wxDb::initialize()
 
 
 }  // wxDb::initialize()
 
 


@@ -613,18 +603,9 @@ bool wxDb::Open(const wxString &Dsn, const wxString &Uid, const wxString &AuthSt
                          (UCHAR FAR *) uid.c_str(), SQL_NTS,
                          (UCHAR FAR *) authStr.c_str(), SQL_NTS);
 
                          (UCHAR FAR *) uid.c_str(), SQL_NTS,
                          (UCHAR FAR *) authStr.c_str(), SQL_NTS);
 

-/*
-    if (retcode == SQL_SUCCESS_WITH_INFO)
-        DispAllErrors(henv, hdbc);
-    else if (retcode != SQL_SUCCESS)
-        return(DispAllErrors(henv, hdbc));
-
-       if (retcode == SQL_ERROR)
-               return(DispAllErrors(henv, hdbc));
-*/
-       if ((retcode != SQL_SUCCESS) &&
+    if ((retcode != SQL_SUCCESS) &&

         (retcode != SQL_SUCCESS_WITH_INFO))
         (retcode != SQL_SUCCESS_WITH_INFO))

-               return(DispAllErrors(henv, hdbc));
+        return(DispAllErrors(henv, hdbc));

 
 /*
     If using Intersolv branded ODBC drivers, this is the place where you would substitute
 
 /*
     If using Intersolv branded ODBC drivers, this is the place where you would substitute


@@ -733,7 +714,7 @@ bool wxDb::Open(const wxString &Dsn, const wxString &Uid, const wxString &AuthSt
     // Date/Time
     if (Dbms() != dbmsDBASE)
     {
     // Date/Time
     if (Dbms() != dbmsDBASE)
     {

-        if (! getDataTypeInfo(SQL_TIMESTAMP,typeInfDate))
+        if (!getDataTypeInfo(SQL_TIMESTAMP,typeInfDate))

             return(FALSE);
         else
             typeInfDate.FsqlType = SQL_TIMESTAMP;
             return(FALSE);
         else
             typeInfDate.FsqlType = SQL_TIMESTAMP;


@@ -807,8 +788,8 @@ bool wxDb::Open(wxDb *copyDb)
                          (UCHAR FAR *) uid.c_str(), SQL_NTS,
                          (UCHAR FAR *) authStr.c_str(), SQL_NTS);
 
                          (UCHAR FAR *) uid.c_str(), SQL_NTS,
                          (UCHAR FAR *) authStr.c_str(), SQL_NTS);
 

-       if (retcode == SQL_ERROR)
-               return(DispAllErrors(henv, hdbc));
+    if (retcode == SQL_ERROR)
+        return(DispAllErrors(henv, hdbc));

 
 /*
     If using Intersolv branded ODBC drivers, this is the place where you would substitute
 
 /*
     If using Intersolv branded ODBC drivers, this is the place where you would substitute


@@ -927,7 +908,7 @@ bool wxDb::setConnectionOptions(void)
 
     SQLSetConnectOption(hdbc, SQL_AUTOCOMMIT, SQL_AUTOCOMMIT_OFF);
     SQLSetConnectOption(hdbc, SQL_OPT_TRACE, SQL_OPT_TRACE_OFF);
 
     SQLSetConnectOption(hdbc, SQL_AUTOCOMMIT, SQL_AUTOCOMMIT_OFF);
     SQLSetConnectOption(hdbc, SQL_OPT_TRACE, SQL_OPT_TRACE_OFF);

-//     SQLSetConnectOption(hdbc, SQL_TXN_ISOLATION, SQL_TXN_READ_COMMITTED);  // No dirty reads
+//  SQLSetConnectOption(hdbc, SQL_TXN_ISOLATION, SQL_TXN_READ_COMMITTED);  // No dirty reads

 
     // By default, MS Sql Server closes cursors on commit and rollback.  The following
     // call to SQLSetConnectOption() is needed to force SQL Server to preserve cursors
 
     // By default, MS Sql Server closes cursors on commit and rollback.  The following
     // call to SQLSetConnectOption() is needed to force SQL Server to preserve cursors


@@ -1415,7 +1396,7 @@ void wxDb::Close(void)
         {
             s.Printf(wxT("(%-20s)     tableID:[%6lu]     pDb:[%p]"), tiu->tableName,tiu->tableID,tiu->pDb);
             s2.Printf(wxT("Orphaned found using pDb:[%p]"),this);
         {
             s.Printf(wxT("(%-20s)     tableID:[%6lu]     pDb:[%p]"), tiu->tableName,tiu->tableID,tiu->pDb);
             s2.Printf(wxT("Orphaned found using pDb:[%p]"),this);

-            wxLogDebug (s,s2);
+            wxLogDebug (s.c_str(),s2.c_str());

         }
         pNode = pNode->Next();
     }
         }
         pNode = pNode->Next();
     }


@@ -1426,7 +1407,7 @@ void wxDb::Close(void)
     for (i = 0; i < DB_MAX_ERROR_HISTORY; i++)
         wxStrcpy(DBerrorList[i], errorList[i]);
 
     for (i = 0; i < DB_MAX_ERROR_HISTORY; i++)
         wxStrcpy(DBerrorList[i], errorList[i]);
 

-    dbmsType   = dbmsUNIDENTIFIED;
+    dbmsType = dbmsUNIDENTIFIED;

     dbIsOpen = FALSE;
 
 } // wxDb::Close()
     dbIsOpen = FALSE;
 
 } // wxDb::Close()


@@ -1499,7 +1480,7 @@ bool wxDb::DispAllErrors(HENV aHenv, HDBC aHdbc, HSTMT aHstmt)
         }
     }
 
         }
     }
 

-    return(FALSE);  // This function always returns false.
+    return(FALSE);  // This function always returns FALSE.

 
 } // wxDb::DispAllErrors()
 
 
 } // wxDb::DispAllErrors()
 


@@ -1794,7 +1775,7 @@ bool wxDb::Grant(int privileges, const wxString &tableName, const wxString &user
     }
 
     sqlStmt += wxT(" ON ");
     }
 
     sqlStmt += wxT(" ON ");

-    sqlStmt += tableName;
+    sqlStmt += SQLTableName(tableName);

     sqlStmt += wxT(" TO ");
     sqlStmt += userList;
 
     sqlStmt += wxT(" TO ");
     sqlStmt += userList;
 


@@ -1881,7 +1862,7 @@ bool wxDb::DropView(const wxString &viewName)
     }
 
     // Commit the transaction
     }
 
     // Commit the transaction

-    if (! CommitTrans())
+    if (!CommitTrans())

         return(FALSE);
 
     return TRUE;
         return(FALSE);
 
     return TRUE;


@@ -2111,8 +2092,8 @@ wxDbColInf *wxDb::GetColumns(wxChar *tableName[], const wxChar *userID)
  *       to avoid undesired unbinding of columns.
  */
 {
  *       to avoid undesired unbinding of columns.
  */
 {

-    UWORD          noCols = 0;
-    UWORD               colNo  = 0;
+    UWORD       noCols = 0;
+    UWORD       colNo  = 0;

     wxDbColInf *colInf = 0;
 
     RETCODE  retcode;
     wxDbColInf *colInf = 0;
 
     RETCODE  retcode;


@@ -2697,7 +2678,7 @@ wxDbColInf *wxDb::GetColumns(const wxString &tableName, int *numCols, const wxCh
     // Build a generic SELECT statement which returns 0 rows
     wxString Stmt;
 
     // Build a generic SELECT statement which returns 0 rows
     wxString Stmt;
 

-    Stmt.Printf(wxT("select * from %s where 0=1"), tableName);
+    Stmt.Printf(wxT("select * from \"%s\" where 0=1"), tableName);

 
     // Execute query
     if (SQLExecDirect(hstmt, (UCHAR FAR *) Stmt.c_str(), SQL_NTS) != SQL_SUCCESS)
 
     // Execute query
     if (SQLExecDirect(hstmt, (UCHAR FAR *) Stmt.c_str(), SQL_NTS) != SQL_SUCCESS)


@@ -2769,7 +2750,7 @@ wxDbColInf *wxDb::GetColumns(const wxString &tableName, int *numCols, const wxCh
 
 
 /********** wxDb::GetColumnCount() **********/
 
 
 /********** wxDb::GetColumnCount() **********/

-UWORD wxDb::GetColumnCount(const wxString &tableName, const wxChar *userID)
+int wxDb::GetColumnCount(const wxString &tableName, const wxChar *userID)

 /*
  * Returns a count of how many columns are in a table.
  * If an error occurs in computing the number of columns
 /*
  * Returns a count of how many columns are in a table.
  * If an error occurs in computing the number of columns


@@ -2990,7 +2971,7 @@ bool wxDb::Catalog(const wxChar *userID, const wxString &fileName)
     wxChar    colName[DB_MAX_COLUMN_NAME_LEN+1];
     SWORD     sqlDataType;
     wxChar    typeName[30+1];
     wxChar    colName[DB_MAX_COLUMN_NAME_LEN+1];
     SWORD     sqlDataType;
     wxChar    typeName[30+1];

-    SWORD     precision, length;
+    SDWORD    precision, length;

 
     FILE *fp = fopen(fileName.c_str(),wxT("wt"));
     if (fp == NULL)
 
     FILE *fp = fopen(fileName.c_str(),wxT("wt"));
     if (fp == NULL)


@@ -3004,6 +2985,7 @@ bool wxDb::Catalog(const wxChar *userID, const wxString &fileName)
     if (!UserID.IsEmpty() &&
         Dbms() != dbmsMY_SQL &&
         Dbms() != dbmsACCESS &&
     if (!UserID.IsEmpty() &&
         Dbms() != dbmsMY_SQL &&
         Dbms() != dbmsACCESS &&

+        Dbms() != dbmsINTERBASE &&

         Dbms() != dbmsMS_SQL_SERVER)
     {
         retcode = SQLColumns(hstmt,
         Dbms() != dbmsMS_SQL_SERVER)
     {
         retcode = SQLColumns(hstmt,


@@ -3031,8 +3013,12 @@ bool wxDb::Catalog(const wxChar *userID, const wxString &fileName)
     tblNameSave.Empty();
     int cnt = 0;
 
     tblNameSave.Empty();
     int cnt = 0;
 

-    while ((retcode = SQLFetch(hstmt)) == SQL_SUCCESS)
+    while (TRUE)

     {
     {

+        retcode = SQLFetch(hstmt);
+        if (retcode != SQL_SUCCESS && retcode != SQL_SUCCESS_WITH_INFO)
+            break;
+

         if (wxStrcmp(tblName, tblNameSave.c_str()))
         {
             if (cnt)
         if (wxStrcmp(tblName, tblNameSave.c_str()))
         {
             if (cnt)


@@ -3053,12 +3039,12 @@ bool wxDb::Catalog(const wxChar *userID, const wxString &fileName)
             tblNameSave = tblName;
         }
 
             tblNameSave = tblName;
         }
 

-      GetData(3,SQL_C_CHAR,  (UCHAR *)tblName,     DB_MAX_TABLE_NAME_LEN+1, &cb);
-      GetData(4,SQL_C_CHAR,  (UCHAR *)colName,     DB_MAX_COLUMN_NAME_LEN+1,&cb);
-      GetData(5,SQL_C_SSHORT,(UCHAR *)&sqlDataType,0,                       &cb);
-      GetData(6,SQL_C_CHAR,  (UCHAR *)typeName,    sizeof(typeName),        &cb);
-      GetData(7,SQL_C_SSHORT,(UCHAR *)&precision,  0,                       &cb);
-      GetData(8,SQL_C_SSHORT,(UCHAR *)&length,     0,                       &cb);
+      GetData(3,SQL_C_CHAR,  (UCHAR *) tblName,     DB_MAX_TABLE_NAME_LEN+1, &cb);
+      GetData(4,SQL_C_CHAR,  (UCHAR *) colName,     DB_MAX_COLUMN_NAME_LEN+1,&cb);
+      GetData(5,SQL_C_SSHORT,(UCHAR *)&sqlDataType, 0,                       &cb);
+      GetData(6,SQL_C_CHAR,  (UCHAR *) typeName,    sizeof(typeName),        &cb);
+      GetData(7,SQL_C_SLONG, (UCHAR *)&precision,   0,                       &cb);
+      GetData(8,SQL_C_SLONG, (UCHAR *)&length,      0,                       &cb);

 
         outStr.Printf(wxT("%-32s %-32s (%04d)%-15s %9d %9d\n"),
             tblName, colName, sqlDataType, typeName, precision, length);
 
         outStr.Printf(wxT("%-32s %-32s (%04d)%-15s %9d %9d\n"),
             tblName, colName, sqlDataType, typeName, precision, length);


@@ -3084,7 +3070,7 @@ bool wxDb::Catalog(const wxChar *userID, const wxString &fileName)
 
 bool wxDb::TableExists(const wxString &tableName, const wxChar *userID, const wxString &tablePath)
 /*
 
 bool wxDb::TableExists(const wxString &tableName, const wxChar *userID, const wxString &tablePath)
 /*

- * Table name can refer to a table, view, alias or synonym.  Returns true
+ * Table name can refer to a table, view, alias or synonym.  Returns TRUE

  * 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.
  * 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.


@@ -3132,6 +3118,7 @@ bool wxDb::TableExists(const wxString &tableName, const wxChar *userID, const wx
         Dbms() != dbmsACCESS &&
         Dbms() != dbmsMS_SQL_SERVER &&
         Dbms() != dbmsDB2 &&
         Dbms() != dbmsACCESS &&
         Dbms() != dbmsMS_SQL_SERVER &&
         Dbms() != dbmsDB2 &&

+        Dbms() != dbmsINTERBASE &&

         Dbms() != dbmsPERVASIVE_SQL)
     {
         retcode = SQLTables(hstmt,
         Dbms() != dbmsPERVASIVE_SQL)
     {
         retcode = SQLTables(hstmt,


@@ -3285,6 +3272,34 @@ bool wxDb::TablePrivileges(const wxString &tableName, const wxString &priv, cons
 }  // wxDb::TablePrivileges
 
 
 }  // wxDb::TablePrivileges
 
 

+const wxString wxDb::SQLTableName(const wxChar *tableName)
+{
+    wxString TableName;
+
+    if (Dbms() == dbmsACCESS)
+        TableName = '"';
+    TableName += tableName;
+    if (Dbms() == dbmsACCESS)
+        TableName += '"';
+
+    return TableName;
+}  // wxDb::SQLTableName()
+
+
+const wxString wxDb::SQLColumnName(const wxChar *colName)
+{
+    wxString ColName;
+
+    if (Dbms() == dbmsACCESS)
+        ColName = '"';
+    ColName += colName;
+    if (Dbms() == dbmsACCESS)
+        ColName += '"';
+
+    return ColName;
+}  // wxDb::SQLColumnName()
+
+

 /********** wxDb::SetSqlLogging() **********/
 bool wxDb::SetSqlLogging(wxDbSqlLogState state, const wxString &filename, bool append)
 {
 /********** wxDb::SetSqlLogging() **********/
 bool wxDb::SetSqlLogging(wxDbSqlLogState state, const wxString &filename, bool append)
 {


@@ -3393,6 +3408,10 @@ wxDBMS wxDb::Dbms(void)
  *
  * PERVASIVE SQL
  *
  *
  * PERVASIVE SQL
  *

+ * INTERBASE
+ *        - Columns that are part of primary keys must be defined as being NOT NULL
+ *          when they are created.  Some code is added in ::CreateIndex to try to adjust the
+ *          column definition if it is not defined correctly, but it is experimental

  */
 {
     // Should only need to do this once for each new database connection
  */
 {
     // Should only need to do this once for each new database connection


@@ -3425,9 +3444,9 @@ wxDBMS wxDb::Dbms(void)
     {
       if (!wxStrncmp(dbInf.driverName, wxT("oplodbc"), 7) ||
           !wxStrncmp(dbInf.driverName, wxT("OLOD"), 4))
     {
       if (!wxStrncmp(dbInf.driverName, wxT("oplodbc"), 7) ||
           !wxStrncmp(dbInf.driverName, wxT("OLOD"), 4))

-                       return ((wxDBMS)(dbmsMS_SQL_SERVER));
-               else
-                       return ((wxDBMS)(dbmsType = dbmsSYBASE_ASE));
+            return ((wxDBMS)(dbmsMS_SQL_SERVER));
+        else
+            return ((wxDBMS)(dbmsType = dbmsSYBASE_ASE));

     }
 
     if (!wxStricmp(dbInf.dbmsName,wxT("Microsoft SQL Server")))
     }
 
     if (!wxStricmp(dbInf.dbmsName,wxT("Microsoft SQL Server")))


@@ -3438,8 +3457,8 @@ wxDBMS wxDb::Dbms(void)
         return((wxDBMS)(dbmsType = dbmsPOSTGRES));
 
     baseName[9] = 0;
         return((wxDBMS)(dbmsType = dbmsPOSTGRES));
 
     baseName[9] = 0;

-       if (!wxStricmp(dbInf.dbmsName,wxT("Pervasive")))
-               return((wxDBMS)(dbmsType = dbmsPERVASIVE_SQL));
+    if (!wxStricmp(dbInf.dbmsName,wxT("Pervasive")))
+        return((wxDBMS)(dbmsType = dbmsPERVASIVE_SQL));

 
     baseName[8] = 0;
     if (!wxStricmp(baseName,wxT("Informix")))
 
     baseName[8] = 0;
     if (!wxStricmp(baseName,wxT("Informix")))


@@ -3482,55 +3501,55 @@ bool wxDb::ModifyColumn(const wxString &tableName, const wxString &columnName,
         return FALSE;
 
     wxString dataTypeName;
         return FALSE;
 
     wxString dataTypeName;

-       wxString sqlStmt;
+    wxString sqlStmt;

     wxString alterSlashModify;
 
     wxString alterSlashModify;
 

-       switch(dataType)
-       {
-           case DB_DATA_TYPE_VARCHAR :
-                   dataTypeName = typeInfVarchar.TypeName;
-                   break;
-           case DB_DATA_TYPE_INTEGER :
-                   dataTypeName = typeInfInteger.TypeName;
-                   break;
-           case DB_DATA_TYPE_FLOAT :
-                   dataTypeName = typeInfFloat.TypeName;
-                   break;
-           case DB_DATA_TYPE_DATE :
-                   dataTypeName = typeInfDate.TypeName;
-                   break;
-           case DB_DATA_TYPE_BLOB :
-                   dataTypeName = typeInfBlob.TypeName;
-                   break;
-           default:
-                   return FALSE;
-       }
-
-       // Set the modify or alter syntax depending on the type of database connected to
-       switch (Dbms())
-       {
-           case dbmsORACLE :
-                   alterSlashModify = "MODIFY";
-                   break;
-           case dbmsMS_SQL_SERVER :
-                   alterSlashModify = "ALTER COLUMN";
-                   break;
-           case dbmsUNIDENTIFIED :
+    switch(dataType)
+    {
+        case DB_DATA_TYPE_VARCHAR :
+            dataTypeName = typeInfVarchar.TypeName;
+            break;
+        case DB_DATA_TYPE_INTEGER :
+            dataTypeName = typeInfInteger.TypeName;
+            break;
+        case DB_DATA_TYPE_FLOAT :
+            dataTypeName = typeInfFloat.TypeName;
+            break;
+        case DB_DATA_TYPE_DATE :
+            dataTypeName = typeInfDate.TypeName;
+            break;
+        case DB_DATA_TYPE_BLOB :
+            dataTypeName = typeInfBlob.TypeName;
+            break;
+        default:
+            return FALSE;
+    }
+
+    // Set the modify or alter syntax depending on the type of database connected to
+    switch (Dbms())
+    {
+        case dbmsORACLE :
+            alterSlashModify = "MODIFY";
+            break;
+        case dbmsMS_SQL_SERVER :
+            alterSlashModify = "ALTER COLUMN";
+            break;
+        case dbmsUNIDENTIFIED :

             return FALSE;
             return FALSE;

-           case dbmsSYBASE_ASA :
-           case dbmsSYBASE_ASE :
-           case dbmsMY_SQL :
-           case dbmsPOSTGRES :
-           case dbmsACCESS :
-           case dbmsDBASE :
-           default :
-                   alterSlashModify = "MODIFY";
-                   break;
-       }
-
-       // create the SQL statement
-       sqlStmt.Printf(wxT("ALTER TABLE %s %s %s %s"), tableName.c_str(), alterSlashModify.c_str(),
-                         columnName.c_str(), dataTypeName.c_str());
+        case dbmsSYBASE_ASA :
+        case dbmsSYBASE_ASE :
+        case dbmsMY_SQL :
+        case dbmsPOSTGRES :
+        case dbmsACCESS :
+        case dbmsDBASE :
+        default :
+            alterSlashModify = "MODIFY";
+            break;
+    }
+
+    // create the SQL statement
+    sqlStmt.Printf(wxT("ALTER TABLE \"%s\" \"%s\" \"%s\" %s"), tableName.c_str(), alterSlashModify.c_str(),
+              columnName.c_str(), dataTypeName.c_str());

 
     // For varchars only, append the size of the column
     if (dataType == DB_DATA_TYPE_VARCHAR)
 
     // For varchars only, append the size of the column
     if (dataType == DB_DATA_TYPE_VARCHAR)


@@ -3547,7 +3566,7 @@ bool wxDb::ModifyColumn(const wxString &tableName, const wxString &columnName,
         sqlStmt += optionalParam;
     }
 
         sqlStmt += optionalParam;
     }
 

-       return ExecSql(sqlStmt);
+    return ExecSql(sqlStmt);

 
 } // wxDb::ModifyColumn()
 
 
 } // wxDb::ModifyColumn()
 


@@ -3605,7 +3624,7 @@ wxDb WXDLLEXPORT *wxDbGetConnection(wxDbConnectInf *pDbConfig, bool FwdOnlyCurso
     // Initialize new node in the linked list
     pList->PtrNext  = 0;
     pList->Free     = FALSE;
     // Initialize new node in the linked list
     pList->PtrNext  = 0;
     pList->Free     = FALSE;

-    pList->Dsn      = pDbConfig->GetDsn();   //glt - will this assignment work?
+    pList->Dsn      = pDbConfig->GetDsn();

     pList->Uid      = pDbConfig->GetUserID();
     pList->AuthStr  = pDbConfig->GetPassword();
 
     pList->Uid      = pDbConfig->GetUserID();
     pList->AuthStr  = pDbConfig->GetPassword();
 


@@ -3621,6 +3640,7 @@ wxDb WXDLLEXPORT *wxDbGetConnection(wxDbConnectInf *pDbConfig, bool FwdOnlyCurso
     // Connect to the datasource
     if (opened)
     {
     // Connect to the datasource
     if (opened)
     {

+        pList->PtrDb->setCached(TRUE);  // Prevent a user from deleting a cached connection

         pList->PtrDb->SetSqlLogging(SQLLOGstate,SQLLOGfn,TRUE);
         return(pList->PtrDb);
     }
         pList->PtrDb->SetSqlLogging(SQLLOGstate,SQLLOGfn,TRUE);
         return(pList->PtrDb);
     }


@@ -3669,6 +3689,7 @@ void WXDLLEXPORT wxDbCloseConnections(void)
         pNext = pList->PtrNext;       // Save the pointer to next
         pList->PtrDb->CommitTrans();  // Commit any open transactions on wxDb object
         pList->PtrDb->Close();        // Close the wxDb object
         pNext = pList->PtrNext;       // Save the pointer to next
         pList->PtrDb->CommitTrans();  // Commit any open transactions on wxDb object
         pList->PtrDb->Close();        // Close the wxDb object

+        pList->PtrDb->setCached(FALSE);  // Allows deletion of the wxDb instance

         delete pList->PtrDb;          // Deletes the wxDb object
         delete pList;                 // Deletes the linked list object
     }
         delete pList->PtrDb;          // Deletes the wxDb object
         delete pList;                 // Deletes the linked list object
     }


@@ -3697,6 +3718,52 @@ int WXDLLEXPORT wxDbConnectionsInUse(void)
 }  // wxDbConnectionsInUse()
 
 
 }  // wxDbConnectionsInUse()
 
 

+
+/********** wxDbLogExtendedErrorMsg() **********/
+// DEBUG ONLY function
+const wxChar WXDLLEXPORT *wxDbLogExtendedErrorMsg(const wxChar *userText, wxDb *pDb,
+                             wxChar *ErrFile, int ErrLine)
+{
+    static wxString msg;
+    msg = userText;
+
+    wxString tStr;
+
+    if (ErrFile || ErrLine)
+    {
+        msg += wxT("File: ");
+        msg += ErrFile;
+        msg += wxT("   Line: ");
+        tStr.Printf(wxT("%d"),ErrLine);
+        msg += tStr.c_str();
+        msg += wxT("\n");
+    }
+
+    msg.Append (wxT("\nODBC errors:\n"));
+    msg += wxT("\n");
+
+    // Display errors for this connection
+    int i;
+    for (i = 0; i < DB_MAX_ERROR_HISTORY; i++)
+    {
+        if (pDb->errorList[i])
+        {
+            msg.Append(pDb->errorList[i]);
+            if (wxStrcmp(pDb->errorList[i],wxT("")) != 0)
+                msg.Append(wxT("\n"));
+            // Clear the errmsg buffer so the next error will not
+            // end up showing the previous error that have occurred
+            wxStrcpy(pDb->errorList[i],wxT(""));
+        }
+    }
+    msg += wxT("\n");
+
+    wxLogDebug(msg.c_str());
+
+    return msg.c_str();
+}  // wxDbLogExtendedErrorMsg()
+
+

 /********** wxDbSqlLog() **********/
 bool wxDbSqlLog(wxDbSqlLogState state, const wxChar *filename)
 {
 /********** wxDbSqlLog() **********/
 bool wxDbSqlLog(wxDbSqlLogState state, const wxChar *filename)
 {