Ejemplo n.º 1
0
        /**
         * Method declaration
         *
         *
         * @param c
         * @param t
         *
         * @return
         *
         * @throws Exception
         */
        private int[] processColumnList(Tokenizer c,
                                        Table t)
        {
            ArrayList v = new ArrayList();

            c.getThis("(");

            while (true)
            {
                v.Add(c.getstring());

                string sToken = c.getstring();

                if (sToken.Equals(")"))
                {
                    break;
                }

                if (!sToken.Equals(","))
                {
                    throw Trace.error(Trace.UNEXPECTED_TOKEN, sToken);
                }
            }

            int s = v.Count;

            int[] col = new int[s];

            for (int i = 0; i < s; i++)
            {
                col[i] = t.getColumnNr((string)v[i]);
            }

            return(col);
        }
Ejemplo n.º 2
0
        /**
         * Method declaration
         *
         *
         * @param c
         * @param channel
         *
         * @return
         *
         * @throws Exception
         */
        private Result processDrop(Tokenizer c,
                                   Channel channel)
        {
            channel.checkReadWrite();
            channel.checkAdmin();

            string sToken = c.getstring();

            if (sToken.Equals("TABLE"))
            {
                sToken = c.getstring();

                if (sToken.Equals("IF"))
                {
                    sToken = c.getstring();                        // EXISTS
                    sToken = c.getstring();                        // <table>

                    dropTable(sToken, true);
                }
                else
                {
                    dropTable(sToken, false);
                }
                channel.commit();
            }
            else if (sToken.Equals("USER"))
            {
                aAccess.dropUser(c.getstringToken());
            }
            else if (sToken.Equals("INDEX"))
            {
                sToken = c.getstring();

                if (!c.wasLongName())
                {
                    throw Trace.error(Trace.UNEXPECTED_TOKEN, sToken);
                }

                string table = c.getLongNameFirst();
                string index = c.getLongNameLast();
                Table  t     = getTable(table, channel);

                t.checkDropIndex(index);

                Table tn = t.moveDefinition(index);

                tn.moveData(t);
                dropTable(table);
                linkTable(tn);
                channel.commit();
            }
            else
            {
                throw Trace.error(Trace.UNEXPECTED_TOKEN, sToken);
            }

            return(new Result());
        }
Ejemplo n.º 3
0
        /**
         * Method declaration
         *
         *
         * @param c
         * @param channel
         * @param grant
         *
         * @return
         *
         * @throws Exception
         */
        private Result processGrantOrRevoke(Tokenizer c, Channel channel,
                                            bool grant)
        {
            channel.checkReadWrite();
            channel.checkAdmin();

            int    right = 0;
            string sToken;

            do
            {
                string sRight = c.getstring();

                right |= Access.getRight(sRight);
                sToken = c.getstring();
            } while (sToken.Equals(","));

            if (!sToken.Equals("ON"))
            {
                throw Trace.error(Trace.UNEXPECTED_TOKEN, sToken);
            }

            string table = c.getstring();

            if (table.Equals("CLASS"))
            {
                // object is saved as 'CLASS "java.lang.Math"'
                // tables like 'CLASS "xy"' should not be created
                table += " \"" + c.getstring() + "\"";
            }
            else
            {
                getTable(table, channel);                    // to make sure the table exists
            }

            c.getThis("TO");

            string user = c.getstringToken();

            //			string command;

            if (grant)
            {
                aAccess.grant(user, table, right);

                //				command = "GRANT";
            }
            else
            {
                aAccess.revoke(user, table, right);

                //				command = "REVOKE";
            }

            return(new Result());
        }
Ejemplo n.º 4
0
        /**
         * Method declaration
         *
         *
         * @param c
         * @param channel
         * @param name
         * @param t
         *
         * @throws Exception
         */
        private void addForeignKeyOn(Tokenizer c, Channel channel, string name,
                                     Table t)
        {
            int[] col = processColumnList(c, t);

            c.getThis("REFERENCES");

            Table t2 = getTable(c.getstring(), channel);

            int[] col2 = processColumnList(c, t2);

            if (t.getIndexForColumns(col) == null)
            {
                createIndex(channel, t, col, "SYSTEM_FOREIGN_KEY_" + name, false);
            }

            if (t2.getIndexForColumns(col2) == null)
            {
                createIndex(channel, t2, col2, "SYSTEM_REFERENCE_" + name, false);
            }

            t.addConstraint(new Constraint(Constraint.FOREIGN_KEY, t2, t, col2,
                                           col));
            t2.addConstraint(new Constraint(Constraint.MAIN, t2, t, col2, col));
        }
Ejemplo n.º 5
0
        /**
         * Method declaration
         *
         *
         * @param c
         * @param channel
         *
         * @return
         *
         * @throws Exception
         */
        private Result processRollback(Tokenizer c,
                                       Channel channel)
        {
            string sToken = c.getstring();

            if (!sToken.Equals("WORK"))
            {
                c.back();
            }

            channel.rollback();

            return(new Result());
        }
Ejemplo n.º 6
0
        /**
         * Method declaration
         *
         *
         * @param c
         *
         * @return
         *
         * @throws Exception
         */
        private bool processTrueOrFalse(Tokenizer c)
        {
            string sToken = c.getstring();

            if (sToken.Equals("TRUE"))
            {
                return(true);
            }
            else if (sToken.Equals("FALSE"))
            {
                return(false);
            }
            else
            {
                throw Trace.error(Trace.UNEXPECTED_TOKEN, sToken);
            }
        }
Ejemplo n.º 7
0
        /**
         * Method declaration
         *
         *
         * @param c
         * @param channel
         *
         * @return
         *
         * @throws Exception
         */
        private Result processScript(Tokenizer c,
                                     Channel channel)
        {
            string sToken = c.getstring();

            if (c.wasValue())
            {
                sToken = (string)c.getAsValue();

                Log.scriptToFile(this, sToken, true, channel);

                return(new Result());
            }
            else
            {
                c.back();

                // try to script all: drop, insert; but no positions for cached tables
                return(getScript(true, true, false, channel));
            }
        }
Ejemplo n.º 8
0
        /**
         * Method declaration
         *
         *
         * @param c
         * @param channel
         *
         * @return
         *
         * @throws Exception
         */
        private Result processShutdown(Tokenizer c,
                                       Channel channel)
        {
            channel.checkAdmin();

            // don't disconnect system user; need it to save database
            for (int i = 1; i < cChannel.Count; i++)
            {
                Channel d = (Channel)cChannel[i];

                if (d != null)
                {
                    d.disconnect();
                }
            }

            cChannel.Clear();

            string token = c.getstring();

            if (token.Equals("IMMEDIATELY"))
            {
                close(-1);
            }
            else if (token.Equals("COMPACT"))
            {
                close(1);
            }
            else
            {
                c.back();
                close(0);
            }

            processDisconnect(c, channel);

            return(new Result());
        }
Ejemplo n.º 9
0
        /**
         * Method declaration
         *
         *
         * @param c
         * @param channel
         * @param cached
         *
         * @throws Exception
         */
        private void processCreateTable(Tokenizer c, Channel channel,
                                        bool cached)
        {
            Table  t;
            string sToken = c.getName();

            if (cached && lLog != null)
            {
                t = new Table(this, true, sToken, true);
            }
            else
            {
                t = new Table(this, true, sToken, false);
            }

            c.getThis("(");

            int  primarykeycolumn = -1;
            int  column           = 0;
            bool constraint       = false;

            while (true)
            {
                bool identity = false;

                sToken = c.getstring();

                if (sToken.Equals("CONSTRAINT") || sToken.Equals("PRIMARY") ||
                    sToken.Equals("FOREIGN") || sToken.Equals("UNIQUE"))
                {
                    c.back();

                    constraint = true;

                    break;
                }

                string sColumn = sToken;
                int    iType   = Column.getTypeNr(c.getstring());

                if (iType == Column.VARCHAR && bIgnoreCase)
                {
                    iType = Column.VARCHAR_IGNORECASE;
                }

                sToken = c.getstring();

                if (iType == Column.DOUBLE && sToken.Equals("PRECISION"))
                {
                    sToken = c.getstring();
                }

                if (sToken.Equals("("))
                {
                    // overread length
                    do
                    {
                        sToken = c.getstring();
                    } while (!sToken.Equals(")"));

                    sToken = c.getstring();
                }

                bool nullable = true;

                if (sToken.Equals("NULL"))
                {
                    sToken = c.getstring();
                }
                else if (sToken.Equals("NOT"))
                {
                    c.getThis("NULL");

                    nullable = false;
                    sToken   = c.getstring();
                }

                if (sToken.Equals("IDENTITY"))
                {
                    identity = true;

                    Trace.check(primarykeycolumn == -1, Trace.SECOND_PRIMARY_KEY,
                                sColumn);

                    sToken           = c.getstring();
                    primarykeycolumn = column;
                }

                if (sToken.Equals("PRIMARY"))
                {
                    c.getThis("KEY");
                    Trace.check(identity || primarykeycolumn == -1,
                                Trace.SECOND_PRIMARY_KEY, sColumn);

                    primarykeycolumn = column;
                    sToken           = c.getstring();
                }

                t.addColumn(sColumn, iType, nullable, identity);

                if (sToken.Equals(")"))
                {
                    break;
                }

                if (!sToken.Equals(","))
                {
                    throw Trace.error(Trace.UNEXPECTED_TOKEN, sToken);
                }

                column++;
            }

            if (primarykeycolumn != -1)
            {
                t.createPrimaryKey(primarykeycolumn);
            }
            else
            {
                t.createPrimaryKey();
            }

            if (constraint)
            {
                int i = 0;

                while (true)
                {
                    sToken = c.getstring();

                    string name = "SYSTEM_CONSTRAINT" + i;

                    i++;

                    if (sToken.Equals("CONSTRAINT"))
                    {
                        name   = c.getstring();
                        sToken = c.getstring();
                    }

                    if (sToken.Equals("PRIMARY"))
                    {
                        c.getThis("KEY");
                        addUniqueConstraintOn(c, channel, name, t);
                    }
                    else if (sToken.Equals("UNIQUE"))
                    {
                        addUniqueConstraintOn(c, channel, name, t);
                    }
                    else if (sToken.Equals("FOREIGN"))
                    {
                        c.getThis("KEY");
                        addForeignKeyOn(c, channel, name, t);
                    }

                    sToken = c.getstring();

                    if (sToken.Equals(")"))
                    {
                        break;
                    }

                    if (!sToken.Equals(","))
                    {
                        throw Trace.error(Trace.UNEXPECTED_TOKEN, sToken);
                    }
                }
            }

            channel.commit();
            linkTable(t);
        }
Ejemplo n.º 10
0
        /**
         * Method declaration
         *
         *
         * @param c
         * @param channel
         *
         * @return
         *
         * @throws Exception
         */
        private Result processCreate(Tokenizer c,
                                     Channel channel)
        {
            channel.checkReadWrite();
            channel.checkAdmin();

            string sToken = c.getstring();

            if (sToken.Equals("TABLE"))
            {
                processCreateTable(c, channel, false);
            }
            else if (sToken.Equals("MEMORY"))
            {
                c.getThis("TABLE");
                processCreateTable(c, channel, false);
            }
            else if (sToken.Equals("CACHED"))
            {
                c.getThis("TABLE");
                processCreateTable(c, channel, true);
            }
            else if (sToken.Equals("USER"))
            {
                string u = c.getstringToken();

                c.getThis("PASSWORD");

                string p = c.getstringToken();
                bool   admin;

                if (c.getstring().Equals("ADMIN"))
                {
                    admin = true;
                }
                else
                {
                    admin = false;
                }

                aAccess.createUser(u, p, admin);
            }
            else if (sToken.Equals("ALIAS"))
            {
                string name = c.getstring();

                sToken = c.getstring();

                Trace.check(sToken.Equals("FOR"), Trace.UNEXPECTED_TOKEN, sToken);

                sToken = c.getstring();

                hAlias.Add(name, sToken);
            }
            else
            {
                bool unique = false;

                if (sToken.Equals("UNIQUE"))
                {
                    unique = true;
                    sToken = c.getstring();
                }

                if (!sToken.Equals("INDEX"))
                {
                    throw Trace.error(Trace.UNEXPECTED_TOKEN, sToken);
                }

                string name = c.getName();

                c.getThis("ON");

                Table t = getTable(c.getstring(), channel);

                addIndexOn(c, channel, name, t, unique);
            }

            return(new Result());
        }
Ejemplo n.º 11
0
        /**
         * Method declaration
         *
         *
         * @param statement
         * @param channel
         *
         * @return
         */
        public Result execute(string statement, Channel channel)
        {
            if (Trace.TRACE)
            {
                Trace.trace(statement);
            }

            Tokenizer c       = new Tokenizer(statement);
            Parser    p       = new Parser(this, c, channel);
            Result    rResult = new Result();

            try
            {
                if (lLog != null && lLog.cCache != null)
                {
                    lLog.cCache.cleanUp();
                }

                if (Trace.ASSERT)
                {
                    Trace.assert(!channel.isNestedTransaction());
                }

                Trace.check(channel != null, Trace.ACCESS_IS_DENIED);
                Trace.check(!bShutdown, Trace.DATABASE_IS_SHUTDOWN);

                while (true)
                {
                    int    begin  = c.getPosition();
                    bool   script = false;
                    string sToken = c.getstring();

                    if (sToken.Equals(""))
                    {
                        break;
                    }
                    else if (sToken.Equals("SELECT"))
                    {
                        rResult = p.processSelect();
                    }
                    else if (sToken.Equals("INSERT"))
                    {
                        rResult = p.processInsert();
                    }
                    else if (sToken.Equals("UPDATE"))
                    {
                        rResult = p.processUpdate();
                    }
                    else if (sToken.Equals("DELETE"))
                    {
                        rResult = p.processDelete();
                    }
                    else if (sToken.Equals("ALTER"))
                    {
                        rResult = p.processAlter();
                    }
                    else if (sToken.Equals("CREATE"))
                    {
                        rResult = processCreate(c, channel);
                        script  = true;
                    }
                    else if (sToken.Equals("DROP"))
                    {
                        rResult = processDrop(c, channel);
                        script  = true;
                    }
                    else if (sToken.Equals("GRANT"))
                    {
                        rResult = processGrantOrRevoke(c, channel, true);
                        script  = true;
                    }
                    else if (sToken.Equals("REVOKE"))
                    {
                        rResult = processGrantOrRevoke(c, channel, false);
                        script  = true;
                    }
                    else if (sToken.Equals("CONNECT"))
                    {
                        rResult = processConnect(c, channel);
                    }
                    else if (sToken.Equals("DISCONNECT"))
                    {
                        rResult = processDisconnect(c, channel);
                    }
                    else if (sToken.Equals("SET"))
                    {
                        rResult = processSet(c, channel);
                        script  = true;
                    }
                    else if (sToken.Equals("SCRIPT"))
                    {
                        rResult = processScript(c, channel);
                    }
                    else if (sToken.Equals("COMMIT"))
                    {
                        rResult = processCommit(c, channel);
                        script  = true;
                    }
                    else if (sToken.Equals("ROLLBACK"))
                    {
                        rResult = processRollback(c, channel);
                        script  = true;
                    }
                    else if (sToken.Equals("SHUTDOWN"))
                    {
                        rResult = processShutdown(c, channel);
                    }
                    else if (sToken.Equals("CHECKPOINT"))
                    {
                        rResult = processCheckpoint(channel);
                    }
                    else if (sToken.Equals("CALL"))
                    {
                        rResult = p.processCall();
                    }
                    else if (sToken.Equals(";"))
                    {
                        // ignore
                    }
                    else
                    {
                        throw Trace.error(Trace.UNEXPECTED_TOKEN, sToken);
                    }

                    if (script && lLog != null)
                    {
                        int end = c.getPosition();

                        lLog.write(channel, c.getPart(begin, end));
                    }
                }
            }
            catch (Exception e)
            {
                rResult = new Result(Trace.getMessage(e) + " in statement ["
                                     + statement + "]");
            }

            return(rResult);
        }
Ejemplo n.º 12
0
        /**
         * Method declaration
         *
         *
         * @param c
         * @param channel
         *
         * @return
         *
         * @throws Exception
         */
        private Result processSet(Tokenizer c,
                                  Channel channel)
        {
            string sToken = c.getstring();

            if (sToken.Equals("PASSWORD"))
            {
                channel.checkReadWrite();
                channel.setPassword(c.getstringToken());
            }
            else if (sToken.Equals("READONLY"))
            {
                channel.commit();
                channel.setReadOnly(processTrueOrFalse(c));
            }
            else if (sToken.Equals("LOGSIZE"))
            {
                channel.checkAdmin();

                int i = Int32.FromString(c.getstring());

                if (lLog != null)
                {
                    lLog.setLogSize(i);
                }
            }
            else if (sToken.Equals("IGNORECASE"))
            {
                channel.checkAdmin();

                bIgnoreCase = processTrueOrFalse(c);
            }
            else if (sToken.Equals("MAXROWS"))
            {
                int i = Int32.FromString(c.getstring());

                channel.setMaxRows(i);
            }
            else if (sToken.Equals("AUTOCOMMIT"))
            {
                channel.setAutoCommit(processTrueOrFalse(c));
            }
            else if (sToken.Equals("TABLE"))
            {
                channel.checkReadWrite();
                channel.checkAdmin();

                Table t = getTable(c.getstring(), channel);

                c.getThis("INDEX");
                c.getstring();
                t.setIndexRoots((string)c.getAsValue());
            }
            else if (sToken.Equals("REFERENCIAL_INTEGRITY") ||
                     sToken.Equals("REFERENTIAL_INTEGRITY"))
            {
                channel.checkAdmin();

                bReferentialIntegrity = processTrueOrFalse(c);
            }
            else if (sToken.Equals("WRITE_DELAY"))
            {
                channel.checkAdmin();

                bool delay = processTrueOrFalse(c);

                if (lLog != null)
                {
                    lLog.setWriteDelay(delay);
                }
            }
            else
            {
                throw Trace.error(Trace.UNEXPECTED_TOKEN, sToken);
            }

            return(new Result());
        }
Ejemplo n.º 13
0
        /**
         * Method declaration
         *
         * ALTER TABLE tableName ADD COLUMN columnName columnType;
         * ALTER TABLE tableName DELETE COLUMN columnName;
         *
         * <B>Note: </B>The only change I've made to Sergio's original code was
         * changing the insert's to call insertNoCheck to bypass the trigger
         * mechanism that is a part of hsqldb 1.60 and beyond. - Mark Tutt
         *
         * @return
         *
         * @throws Exception
         */
        public Result processAlter()
        {
            tTokenizer.getThis("TABLE");

            string token = tTokenizer.getstring();

            cChannel.checkReadWrite();

            // cChannel.check(token,Access.ALTER); --> Accessul nu-l inca controleaza...
            string tName = token;
            string swap = tName + "SWAP";

            // nimicirea swapului...
            dDatabase.execute("DROP TABLE " + swap, cChannel);

            Table initialTable = dDatabase.getTable(token, cChannel);
            int   count = 0;

            token = tTokenizer.getstring();

            if (token.Equals("ADD"))
            {
                token = tTokenizer.getstring();

                if (token.Equals("COLUMN"))
                {
                    Table swapTable = new Table(dDatabase, true, swap,
                        initialTable.isCached());

                    // copiem coloanele (fara date) din tabelul initial in swap
                    for (int i = 0; i < initialTable.getColumnCount(); i++)
                    {
                        Column aColumn = initialTable.getColumn(i);

                        swapTable.addColumn(aColumn);
                    }

                    // end Of copiem coloanele...
                    // aflam daca are PrimaryKey & o cream...
                    string  cName = tTokenizer.getstring();
                    string  cType = tTokenizer.getstring();
                    int     iType = Column.getTypeNr(cType);
                    string  sToken = cType;
                    //					int     primarykeycolumn = -1;
                    bool identity = false;
                    int     column = initialTable.getColumnCount() + 1;

                    // !--
                    // stolen from CREATE TABLE...
                    string  sColumn = cName;

                    if (iType == Column.VARCHAR && dDatabase.isIgnoreCase())
                    {
                        iType = Column.VARCHAR_IGNORECASE;
                    }

                    sToken = tTokenizer.getstring();

                    if (iType == Column.DOUBLE && sToken.Equals("PRECISION"))
                    {
                        sToken = tTokenizer.getstring();
                    }

                    if (sToken.Equals("("))
                    {

                        // overread length
                        do
                        {
                            sToken = tTokenizer.getstring();
                        } while (!sToken.Equals(")"));

                        sToken = tTokenizer.getstring();
                    }

                    // !--
                    bool nullable = true;

                    if (sToken.Equals("NULL"))
                    {
                        sToken = tTokenizer.getstring();
                    }
                    else if (sToken.Equals("NOT"))
                    {
                        tTokenizer.getThis("NULL");

                        nullable = false;
                        sToken = tTokenizer.getstring();
                    }

                    /*
                     * if(sToken.Equals("IDENTITY")) {
                     * identity=true;
                     * Trace.check(primarykeycolumn==-1,Trace.SECOND_PRIMARY_KEY,sColumn);
                     * sToken=tTokenizer.getstring();
                     * primarykeycolumn=column;
                     * }
                     *
                     * if(sToken.Equals("PRIMARY")) {
                     * tTokenizer.getThis("KEY");
                     * Trace.check(identity || primarykeycolumn==-1,
                     * Trace.SECOND_PRIMARY_KEY,sColumn);
                     * primarykeycolumn=column;
                     * //sToken=tTokenizer.getstring();
                     * }
                     * //end of STOLEN...
                     */
                    swapTable.addColumn(cName, iType, nullable,
                        identity);    // under construction...

                    if (initialTable.getColumnCount()
                        < initialTable.getInternalColumnCount())
                    {
                        swapTable.createPrimaryKey();
                    }
                    else
                    {
                        swapTable.createPrimaryKey(initialTable.getPrimaryIndex().getColumns()[0]);
                    }

                    // endof PrimaryKey...
                    // sa ne farimam cu indicii... ;-((
                    Index idx = null;

                    while (true)
                    {
                        idx = initialTable.getNextIndex(idx);

                        if (idx == null)
                        {
                            break;
                        }

                        if (idx == initialTable.getPrimaryIndex())
                        {
                            continue;
                        }

                        swapTable.createIndex(idx);
                    }

                    // end of Index...
                    cChannel.commit();
                    dDatabase.linkTable(swapTable);

                    Tokenizer tmpTokenizer = new Tokenizer("SELECT * FROM "
                        + tName);
                    Parser    pp = new Parser(dDatabase, tmpTokenizer, cChannel);
                    string    ff = tmpTokenizer.getstring();

                    if (!initialTable.isEmpty())
                    {
                        Record n = ((Result) pp.processSelect()).rRoot;

                        do
                        {
                            object[] row = swapTable.getNewRow();
                            object[] row1 = n.data;

                            for (int i = 0; i < initialTable.getColumnCount();
                                i++)
                            {
                                row[i] = row1[i];
                            }

                            swapTable.insertNoCheck(row, cChannel);

                            n = n.next;
                        } while (n != null);
                    }

                    dDatabase.execute("DROP TABLE " + tName, cChannel);

                    // cream tabelul vechi cu proprietatile celui nou...
                    initialTable = new Table(dDatabase, true, tName,
                        swapTable.isCached());

                    for (int i = 0; i < swapTable.getColumnCount(); i++)
                    {
                        Column aColumn = swapTable.getColumn(i);

                        initialTable.addColumn(aColumn);
                    }

                    if (swapTable.getColumnCount()
                        < swapTable.getInternalColumnCount())
                    {
                        initialTable.createPrimaryKey();
                    }
                    else
                    {
                        initialTable.createPrimaryKey(swapTable.getPrimaryIndex().getColumns()[0]);
                    }

                    // endof PrimaryKey...
                    // sa ne farimam cu indicii... ;-((
                    idx = null;

                    while (true)
                    {
                        idx = swapTable.getNextIndex(idx);

                        if (idx == null)
                        {
                            break;
                        }

                        if (idx == swapTable.getPrimaryIndex())
                        {
                            continue;
                        }

                        initialTable.createIndex(idx);
                    }

                    // end of Index...
                    cChannel.commit();
                    dDatabase.linkTable(initialTable);

                    // end of cream...
                    // copiem datele din swap in tabel...
                    tmpTokenizer = new Tokenizer("SELECT * FROM " + swap);
                    pp = new Parser(dDatabase, tmpTokenizer, cChannel);
                    ff = tmpTokenizer.getstring();

                    if (!swapTable.isEmpty())
                    {
                        Record n = ((Result) pp.processSelect()).rRoot;

                        do
                        {
                            object[] row = initialTable.getNewRow();
                            object[] row1 = n.data;

                            for (int i = 0; i < swapTable.getColumnCount(); i++)
                            {
                                row[i] = row1[i];
                            }

                            initialTable.insertNoCheck(row, cChannel);

                            n = n.next;
                        } while (n != null);

                        // end of copiem...
                    }

                    dDatabase.execute("DROP TABLE " + swap, cChannel);

                    count = 4;
                }
                else
                {
                    throw Trace.error(Trace.UNEXPECTED_TOKEN, token);
                }
            }
            else if (token.Equals("DELETE"))
            {
                token = tTokenizer.getstring();

                if (token.Equals("COLUMN"))
                {
                    Table  swapTable = new Table(dDatabase, true, swap,
                        initialTable.isCached());
                    string cName = tTokenizer.getstring();
                    int    undesired = initialTable.getColumnNr(cName);

                    for (int i = 0; i < initialTable.getColumnCount(); i++)
                    {
                        Column aColumn = initialTable.getColumn(i);

                        if (i != undesired)
                        {
                            swapTable.addColumn(aColumn);
                        }
                    }

                    int pKey = -1;

                    // !--
                    if (initialTable.getColumnCount()
                        < initialTable.getInternalColumnCount())
                    {
                        swapTable.createPrimaryKey();
                    }
                    else
                    {
                        int[] cols = initialTable.getPrimaryIndex().getColumns();

                        pKey = cols[0];

                        if ((cols[0] > undesired)
                            || (cols[0] + cols.Length < undesired))
                        {
                            if (undesired
                                < initialTable.getPrimaryIndex().getColumns()[0])
                            {

                                // reindexarea...
                                for (int i = 0; i < cols.Length; i++)
                                {
                                    cols[i]--;
                                }

                                // endOf reindexarea...
                            }
                            // MT: This initially wouldn't compile, missing the array index on cols[]
                            swapTable.createPrimaryKey(cols[0]);
                        }
                        else
                        {
                            swapTable.createPrimaryKey();
                        }
                    }

                    // endof PrimaryKey...
                    // sa ne farimam cu indicii... ;-((
                    Index idx = null;

                    while (true)
                    {
                        idx = initialTable.getNextIndex(idx);

                        if (idx == null)
                        {
                            break;
                        }

                        if (idx == initialTable.getPrimaryIndex())
                        {
                            continue;
                        }

                        bool flag = true;
                        int[]   cols = idx.getColumns();

                        for (int i = 0; i < cols.Length; i++)
                        {
                            if (cols[i] == undesired)
                            {
                                flag = false;
                            }
                        }

                        if (flag)
                        {
                            Index tIdx;

                            for (int i = 0; i < cols.Length; i++)
                            {
                                if (cols[i] > undesired)
                                {
                                    cols[i]--;
                                }
                            }

                            tIdx = new Index(idx.getName(), idx.getColumns(),
                                idx.getType(), idx.isUnique());

                            swapTable.createIndex(tIdx);
                        }
                    }

                    // !--
                    cChannel.commit();
                    dDatabase.linkTable(swapTable);

                    Tokenizer tmpTokenizer = new Tokenizer("SELECT * FROM "
                        + tName);
                    Parser    pp = new Parser(dDatabase, tmpTokenizer, cChannel);
                    string    ff = tmpTokenizer.getstring();

                    if (!initialTable.isEmpty())
                    {
                        Record n = ((Result) pp.processSelect()).rRoot;

                        do
                        {
                            object[] row = swapTable.getNewRow();
                            object[] row1 = n.data;
                            int    j = 0;

                            for (int i = 0; i < initialTable.getColumnCount();
                                i++)
                            {
                                if (i != undesired)
                                {
                                    row[j] = row1[i];
                                    j++;
                                }
                            }

                            swapTable.insertNoCheck(row, cChannel);

                            n = n.next;
                        } while (n != null);
                    }

                    dDatabase.execute("DROP TABLE " + tName, cChannel);

                    // cream tabelul vechi cu proprietatile celui nou...
                    initialTable = new Table(dDatabase, true, tName,
                        swapTable.isCached());

                    for (int i = 0; i < swapTable.getColumnCount(); i++)
                    {
                        Column aColumn = swapTable.getColumn(i);

                        initialTable.addColumn(aColumn);
                    }

                    // !--
                    if (swapTable.getColumnCount()
                        < swapTable.getInternalColumnCount())
                    {
                        initialTable.createPrimaryKey();
                    }
                    else
                    {
                        initialTable.createPrimaryKey(swapTable.getPrimaryIndex().getColumns()[0]);
                    }

                    // endof PrimaryKey...
                    // sa ne farimam cu indicii... ;-((
                    idx = null;

                    while (true)
                    {
                        idx = swapTable.getNextIndex(idx);

                        if (idx == null)
                        {
                            break;
                        }

                        if (idx == swapTable.getPrimaryIndex())
                        {
                            continue;
                        }

                        initialTable.createIndex(idx);
                    }

                    // end of Index...
                    // !--
                    cChannel.commit();
                    dDatabase.linkTable(initialTable);

                    // end of cream...
                    // copiem datele din swap in tabel...
                    tmpTokenizer = new Tokenizer("SELECT * FROM " + swap);
                    pp = new Parser(dDatabase, tmpTokenizer, cChannel);
                    ff = tmpTokenizer.getstring();

                    if (!swapTable.isEmpty())
                    {
                        Record n = ((Result) pp.processSelect()).rRoot;

                        do
                        {
                            object[] row = initialTable.getNewRow();
                            object[] row1 = n.data;

                            for (int i = 0; i < swapTable.getColumnCount(); i++)
                            {
                                row[i] = row1[i];
                            }

                            initialTable.insertNoCheck(row, cChannel);

                            n = n.next;
                        } while (n != null);

                        // end of copiem...
                    }

                    dDatabase.execute("DROP TABLE " + swap, cChannel);

                    count = 3;
                }
                else
                {
                    throw Trace.error(Trace.UNEXPECTED_TOKEN, token);
                }

                count = 3;
            }

            Result r = new Result();

            r.iUpdateCount = count;    // --> nu tre inca...??

            return r;
        }