Deveel.Data.Sql.Statements.CreateSequenceStatement.ExecuteStatement C# (CSharp) Method

        protected override void ExecuteStatement(ExecutionContext context)
        {
            //if (!context.User.CanCreate(DbObjectType.Sequence, SequenceName))
            //	throw new MissingPrivilegesException(context.Request.UserName(), SequenceName, Privileges.Create);

            if (context.DirectAccess.ObjectExists(SequenceName))
                throw new StatementException(String.Format("An object named '{0}' already exists.", SequenceName));

            if (context.DirectAccess.ObjectExists(DbObjectType.Sequence, SequenceName))
                throw new StatementException(String.Format("The sequence '{0}' already exists.", SequenceName));

            var startValue = SqlNumber.Zero;
            var incrementBy = SqlNumber.One;
            var minValue = SqlNumber.Zero;
            var maxValue = new SqlNumber(Int64.MaxValue);
            var cache = 16;
            var cycle = Cycle;

            if (StartWith != null)
                startValue = (SqlNumber)StartWith.EvaluateToConstant(context.Request, null).AsBigInt().Value;
            if (IncrementBy != null)
                incrementBy = (SqlNumber)IncrementBy.EvaluateToConstant(context.Request, null).AsBigInt().Value;
            if (MinValue != null)
                minValue = (SqlNumber)MinValue.EvaluateToConstant(context.Request, null).AsBigInt().Value;
            if (MaxValue != null)
                maxValue = (SqlNumber)MaxValue.EvaluateToConstant(context.Request, null).AsBigInt().Value;

            if (minValue >= maxValue)
                throw new InvalidOperationException("The minimum value cannot be more than the maximum.");
            if (startValue < minValue ||
                startValue >= maxValue)
                throw new InvalidOperationException("The start value cannot be out of the mim/max range.");

            var seqInfo = new SequenceInfo(SequenceName, startValue, incrementBy, minValue, maxValue, cache, cycle);
            context.Request.Access().CreateObject(seqInfo);
        }