- Catalog table: Use XFLD as Flag value instead of column index.

- Use the COLDEF flag to initialize column nullable value.
- Fix a bug on inserting null values in MYSQL tables.

modified:
  storage/connect/colblk.cpp
  storage/connect/connect.cc
  storage/connect/ha_connect.cc
  storage/connect/odbconn.cpp
  storage/connect/plgdbsem.h
  storage/connect/table.cpp
  storage/connect/tabmysql.cpp

storage/connect/colblk.cpp

@@ -40,16 +40,17 @@ COLBLK::COLBLK(PCOLDEF cdp, PTDB tdbp, int i)
     Long = cdp->Long;
     Buf_Type = cdp->Buf_Type;
     ColUse |= cdp->Flags;       // Used by CONNECT
+    Nullable = !!(cdp->Flags & U_NULLS);
   } else {
     Name = NULL;
     memset(&Format, 0, sizeof(FORMAT));
     Opt = 0;
     Long = 0;
     Buf_Type = TYPE_ERROR;
+    Nullable = false;
   } // endif cdp
 
   To_Tdb = tdbp;
-  Nullable = false;
   Status = BUF_NO;
 //Value = NULL;                  done in XOBJECT constructor
   To_Kcol = NULL;

storage/connect/connect.cc

@@ -273,10 +273,8 @@ bool CntOpenTable(PGLOBAL g, PTDB tdbp, MODE mode, char *c1, char *c2,
       cp= new(g) COLUMN(p + 1);
       cp->SetTo_Table(tdbp->GetTable());
       colp= ((PTDBASE)tdbp)->InsertSpcBlk(g, cp);
-    } else {
-      colp= tdbp->ColDB(g, p + 1, 0);
-      colp->SetNullable(*p == '1');
-    } // endif p
+    } else
+      colp= tdbp->ColDB(g, p, 0);
 
     if (!colp) {
       sprintf(g->Message, "Column %s not found in %s", p, tdbp->GetName());
@@ -340,8 +338,7 @@ bool CntOpenTable(PGLOBAL g, PTDB tdbp, MODE mode, char *c1, char *c2,
       utp->ColDB(g, NULL, 0);
     else for (p= c2; *p; p+= n) {
       // Allocate only used column blocks
-      colp= utp->ColDB(g, p + 1, 0);
-      colp->SetNullable(*p == '1');
+      colp= utp->ColDB(g, p, 0);
       n= strlen(p) + 1;
       } // endfor p
 

storage/connect/ha_connect.cc

@@ -1238,7 +1238,7 @@ void ha_connect::AddColName(char *cp, Field *fp)
     // The prefix * mark the column as "special"
     strcat(strcpy(cp, "*"), strupr(fop->special));
   else
-    strcat(strcpy(cp, fp->maybe_null() ? "1" : "0"), (char*)fp->field_name);
+    strcpy(cp, (char*)fp->field_name);
 
 } // end of AddColName
 
@@ -1313,7 +1313,7 @@ bool ha_connect::OpenTable(PGLOBAL g, bool del)
       } // endif
 
     if (ump && bitmap_is_set(ump, (*field)->field_index)) {
-      n2+= (GetColNameLen(*field) + 1);
+      n2+= GetColNameLen(*field);
       k2++;
       } // endif
 

storage/connect/odbconn.cpp

@@ -238,7 +238,7 @@ PQRYRES ODBCColumns(PGLOBAL g, char *dsn, char *table,
                           TYPE_STRING, TYPE_SHORT, TYPE_STRING,
                           TYPE_INT,    TYPE_INT,   TYPE_SHORT,
                           TYPE_SHORT,  TYPE_SHORT, TYPE_STRING};
-  static XFLD fldtyp[] = {FLD_NO,    FLD_NO,     FLD_NO,
+  static XFLD fldtyp[] = {FLD_QUALIF, FLD_OWNER,  FLD_TABNAME,
                           FLD_NAME,   FLD_TYPE,   FLD_TYPENAME,
                           FLD_PREC,   FLD_LENGTH, FLD_SCALE,
                           FLD_RADIX,  FLD_NULL,   FLD_REM};
@@ -397,6 +397,7 @@ PQRYRES ODBCDataSources(PGLOBAL g, bool info)
   {
   static int  dbtype[] = {DB_CHAR, DB_CHAR};
   static int  buftyp[] = {TYPE_STRING, TYPE_STRING};
+  static XFLD fldtyp[] = {FLD_NAME, FLD_REM};
   static unsigned int length[] = {0, 256};
   int      n = 0, ncol = 2;
   int      maxres;
@@ -423,7 +424,7 @@ PQRYRES ODBCDataSources(PGLOBAL g, bool info)
   /*  Allocate the structures used to refer to the result set.            */
   /************************************************************************/
   qrp = PlgAllocResult(g, ncol, maxres, IDS_DSRC, 
-                          dbtype, buftyp, NULL, length, true, true);
+                          dbtype, buftyp, fldtyp, length, true, true);
 
   /************************************************************************/
   /*  Now get the results into blocks.                                    */
@@ -446,6 +447,7 @@ PQRYRES ODBCDrivers(PGLOBAL g, bool info)
   {
   static int  dbtype[] = {DB_CHAR, DB_CHAR};
   static int  buftyp[] = {TYPE_STRING, TYPE_STRING};
+  static XFLD fldtyp[] = {FLD_NAME, FLD_REM};
   static unsigned int length[] = {128, 256};
   int      ncol = 2;
   int      maxres;
@@ -468,7 +470,7 @@ PQRYRES ODBCDrivers(PGLOBAL g, bool info)
   /*  Allocate the structures used to refer to the result set.            */
   /************************************************************************/
   qrp = PlgAllocResult(g, ncol, maxres, IDS_DRIVER, 
-                          dbtype, buftyp, NULL, length, true, true);
+                          dbtype, buftyp, fldtyp, length, true, true);
 
   /************************************************************************/
   /*  Now get the results into blocks.                                    */

storage/connect/plgdbsem.h

@@ -469,7 +469,7 @@ typedef struct _tabs {
 /*  Following definitions are used to define table fields (columns).   */
 /***********************************************************************/
 enum XFLD {FLD_NO       =  0,         /* Not a field definition item   */
-           FLD_NAME     =  1,         /* Field name                    */
+           FLD_NAME     =  1,         /* Item name                     */
            FLD_TYPE     =  2,         /* Field type                    */
            FLD_TYPENAME =  3,         /* Field type name               */
            FLD_PREC     =  4,         /* Field precision (length?)     */
@@ -482,7 +482,10 @@ enum XFLD {FLD_NO       =  0,         /* Not a field definition item   */
            FLD_KEY      = 11,         /* Field key property            */
            FLD_DEFAULT  = 12,         /* Field default value           */
            FLD_PRIV     = 13,         /* Field priviledges             */
-           FLD_DATEFMT  = 14};        /* Field date format             */
+           FLD_DATEFMT  = 14,         /* Field date format             */
+           FLD_QUALIF   = 15,         /* Table qualifier               */
+           FLD_OWNER    = 16,         /* Table owner                   */
+           FLD_TABNAME  = 17};        /* Column Table name             */
 
 /***********************************************************************/
 /*  Result of last SQL noconv query.                                   */

storage/connect/table.cpp

@@ -530,7 +530,7 @@ bool TDBCAT::InitCol(PGLOBAL g)
 
   for (colp = (PCATCOL)Columns; colp; colp = (PCATCOL)colp->GetNext()) {
     for (crp = Qrp->Colresp; crp; crp = crp->Next)
-      if ((colp->Flag == crp->Ncol) ||
+      if ((colp->Flag && colp->Flag == crp->Fld) ||
          (!colp->Flag && !stricmp(colp->Name, crp->Name))) {
         colp->Crp = crp;
         break;

storage/connect/tabmysql.cpp

@@ -846,6 +846,7 @@ int TDBMYSQL::WriteDB(PGLOBAL g)
 
   // Make the Insert command value list
   for (PCOL colp = Columns; colp; colp = colp->GetNext()) {
+    if (!colp->GetValue()->IsNull()) {
       if (colp->GetResultType() == TYPE_STRING || 
           colp->GetResultType() == TYPE_DATE)
         strcat(Qbuf, "'");
@@ -856,6 +857,9 @@ int TDBMYSQL::WriteDB(PGLOBAL g)
           colp->GetResultType() == TYPE_DATE)
         strcat(Qbuf, "'");
 
+    } else
+      strcat(Qbuf, "NULL");
+
     strcat(Qbuf, (colp->GetNext()) ? "," : ")");
     } // endfor colp