func (b *Batch[K, T]) Len() int {
	b.Lock()
	defer b.Unlock()

	return len(b.keys)
}

// IsFull checks if the batch is full or not
func (b *Batch[K, T]) IsFull() bool {
	b.Lock()
	defer b.Unlock()

	return b.isFull()
}

func (b *Batch[K, T]) isFull() bool {
	return len(b.items) >= int(b.limit)
}

// NewBatch creates a new batch

	return t.Date.Time.IsZero()
}

// IsNull returns true if both date and days fields are null
func (t Transition) IsNull() bool {
	return t.StorageClass == ""
}

// NextDue returns upcoming transition date for obj and true if applicable,
// returns false otherwise.
func (t Transition) NextDue(obj ObjectOpts) (time.Time, bool) {
	if !obj.IsLatest || t.IsNull() {
		return time.Time{}, false
	}

		}
	}
	err := batch.Add(101, 101)
	if err == nil || !errors.Is(err, ErrBatchFull) {
		t.Fatalf("Expected err %v but got %v", ErrBatchFull, err)
	}
	if !batch.IsFull() {
		t.Fatal("Expected batch.IsFull to be true but got false")
	}
	batchLen := batch.Len()
	if batchLen != int(limit) {
		t.Fatalf("expected batch length to be %v but got %v", limit, batchLen)
	}
	keys, items, err := batch.GetAll()

			// original rule had expiry that is no longer in the new config,
			// or rule is present but missing expiration flags
			if (!rl.Expiration.IsNull() || !rl.NoncurrentVersionExpiration.IsNull()) &&
				(!ok || (updRule.Expiration.IsNull() && updRule.NoncurrentVersionExpiration.IsNull())) {
				expiryRuleRemoved = true
			}
		}
	}

	if bucketLifecycle.HasExpiry() || expiryRuleRemoved {
		currtime := time.Now()

		NoncurrentDays:          val.NoncurrentDays,
		NewerNoncurrentVersions: val.NewerNoncurrentVersions,
	}
	n.set = true
	return nil
}

// IsNull returns if both NoncurrentDays and NoncurrentVersions are empty
func (n NoncurrentVersionExpiration) IsNull() bool {
	return n.IsDaysNull() && n.NewerNoncurrentVersions == 0
}

// IsDaysNull returns true if days field is null

	return e.Days == ExpirationDays(0)
}

// IsDateNull returns true if date field is null
func (e Expiration) IsDateNull() bool {
	return e.Date.Time.IsZero()
}

// IsNull returns true if both date and days fields are null
func (e Expiration) IsNull() bool {
	return e.IsDaysNull() && e.IsDateNull()

		v = f
	} else if i, ok := value.ToInt(); ok {
		v = i
	} else if t, ok := value.ToTimestamp(); ok {
		v = sql.FormatSQLTimestamp(t)
	} else if s, ok := value.ToString(); ok {
		v = s
	} else if value.IsNull() {
		v = nil
	} else if value.IsMissing() {
		return r, nil
	} else if b, ok := value.ToBytes(); ok {
		// This can either be raw json or a CSV value.
		// Only treat objects and arrays as JSON.

		if err != nil {
			return err
		}
	} else {
		// Evaluate the (only) argument
		val, err = e.SFunc.ArgsList[0].evalNode(r, tableAlias)
		if err != nil {
			return err
		}
	}

	if val.IsNull() {
		// E.g. the column or field does not exist in the
		// record - in all such cases the aggregation is not
		// updated.
		return nil
	}

	argVal := val
	if funcName != aggFnCount {