コード例 #1
0
ファイル: Database.cs プロジェクト: furesoft/SharpHSQL
        private void ProcessCreateTable(Tokenizer tokenizer, Channel channel, bool cached)
        {
            Table  t;
            string sToken = tokenizer.GetName();

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

            tokenizer.GetThis("(");

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

            while (true)
            {
                bool identity = false;

                sToken = tokenizer.GetString();

                if (sToken.Equals("CONSTRAINT") || sToken.Equals("PRIMARY") ||
                    sToken.Equals("FOREIGN") || sToken.Equals("UNIQUE"))
                {
                    tokenizer.Back();

                    constraint = true;

                    break;
                }

                string     sColumn = sToken;
                ColumnType iType   = Column.GetColumnType(tokenizer.GetString());

                if (iType == ColumnType.VarChar && _ignoreCase)
                {
                    iType = ColumnType.VarCharIgnoreCase;
                }

                sToken = tokenizer.GetString();

                if (iType == ColumnType.DbDouble && sToken.Equals("PRECISION"))
                {
                    sToken = tokenizer.GetString();
                }

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

                    sToken = tokenizer.GetString();
                }

                bool nullable = true;

                if (sToken.Equals("NULL"))
                {
                    sToken = tokenizer.GetString();
                }
                else if (sToken.Equals("NOT"))
                {
                    tokenizer.GetThis("NULL");

                    nullable = false;
                    sToken   = tokenizer.GetString();
                }

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

                    TracingHelper.Check(primarykeycolumn == -1, TracingHelper.SECOND_PRIMARY_KEY,
                                        sColumn);

                    sToken           = tokenizer.GetString();
                    primarykeycolumn = column;
                }

                if (sToken.Equals("PRIMARY"))
                {
                    tokenizer.GetThis("KEY");
                    TracingHelper.Check(identity || primarykeycolumn == -1,
                                        TracingHelper.SECOND_PRIMARY_KEY, sColumn);

                    primarykeycolumn = column;
                    sToken           = tokenizer.GetString();
                }

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

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

                if (!sToken.Equals(","))
                {
                    throw TracingHelper.Error(TracingHelper.UnexpectedToken, sToken);
                }

                column++;
            }

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

            if (constraint)
            {
                int i = 0;

                while (true)
                {
                    sToken = tokenizer.GetString();

                    string name = "SYSTEM_CONSTRAINT" + i;

                    i++;

                    if (sToken.Equals("CONSTRAINT"))
                    {
                        name   = tokenizer.GetString();
                        sToken = tokenizer.GetString();
                    }

                    if (sToken.Equals("PRIMARY"))
                    {
                        tokenizer.GetThis("KEY");
                        AddUniqueConstraintOn(tokenizer, channel, name, t);
                    }
                    else if (sToken.Equals("UNIQUE"))
                    {
                        AddUniqueConstraintOn(tokenizer, channel, name, t);
                    }
                    else if (sToken.Equals("FOREIGN"))
                    {
                        tokenizer.GetThis("KEY");
                        AddForeignKeyOn(tokenizer, channel, name, t);
                    }

                    sToken = tokenizer.GetString();

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

                    if (!sToken.Equals(","))
                    {
                        throw TracingHelper.Error(TracingHelper.UnexpectedToken, sToken);
                    }
                }
            }

            channel.Commit();
            LinkTable(t);
        }