// is ignored.
	UploadIDMarker string

	// When a list is truncated, this element specifies the value that should be
	// used for the key-marker request parameter in a subsequent request.
	NextKeyMarker string

	// When a list is truncated, this element specifies the value that should be
	// used for the upload-id-marker request parameter in a subsequent request.
	NextUploadIDMarker string

		message:    "The value of a parameter in SelectRequest element is invalid. Check the service API documentation and try again.",
		statusCode: 400,
		cause:      err,
	}
}

func errInvalidScanRangeParameter(err error) *s3Error {
	return &s3Error{
		code:       "InvalidRequestParameter",
		message:    "The value of a parameter in ScanRange element is invalid. Check the service API documentation and try again.",

	default:
		return "unknown"
	}
}

// AccElem holds information for calculating an average value
type AccElem struct {
	Total int64
	Size  int64
	N     int64
}

// Add a duration to a single element.
func (a *AccElem) add(dur time.Duration) {
	if dur < 0 {
		dur = 0
	}
	a.Total += int64(dur)
	a.N++
}

// Merge b into a.
func (a *AccElem) merge(b AccElem) {
	a.N += b.N
	a.Total += b.Total

}

func (e *ListExpr) evalNode(r Record, tableAlias string) (*Value, error) {
	res := make([]Value, len(e.Elements))
	if len(e.Elements) == 1 {
		// If length 1, treat as single value.
		return e.Elements[0].evalNode(r, tableAlias)
	}
	for i, elt := range e.Elements {
		v, err := elt.evalNode(r, tableAlias)
		if err != nil {
			return nil, err
		}
		res[i] = *v
	}

// (m[key]) from the map. If m is nil or there is no such element, delete
// is a no-op.
func delete(m map[Type]Type1, key Type)

// The len built-in function returns the length of v, according to its type:
//
//	Array: the number of elements in v.
//	Pointer to array: the number of elements in *v (even if v is nil).
//	Slice, or map: the number of elements in v; if v is nil, len(v) is zero.

	if eDate.Time.IsZero() {
		return nil
	}
	return e.EncodeElement(eDate.Format(time.RFC3339), startElement)
}

// ExpireDeleteMarker represents value of ExpiredObjectDeleteMarker field in Expiration XML element.
type ExpireDeleteMarker struct {
	Boolean
}

// Boolean signifies a boolean XML struct with custom marshaling
type Boolean struct {
	val    bool
	set    bool

		},
		// With a list of only one element nothing to sort.
		{
			ipList:       []string{"hostname"},
			sortedIPList: []string{"hostname"},
		},
		// With a list of only one element nothing to sort.
		{
			ipList:       []string{"127.0.0.1"},
			sortedIPList: []string{"127.0.0.1"},
		},
		// Non parsable ip is assumed to be hostame and gets preserved
		// as the left most elements, regardless of IP based sorting.
		{

		case path[r] == '/':
			// multiple / elements
			return true
		case path[r] == '.' && (r+1 == n || path[r+1] == '/'):
			// . element - assume it has to be cleaned.
			return true
		case path[r] == '.' && path[r+1] == '.' && (r+2 == n || path[r+2] == '/'):
			// .. element: remove to last / - assume it has to be cleaned.
			return true
		default:
			// real path element.
			// add slash if needed

	if !auth.IsAccessKeyValid(c.AccessKey) || !auth.IsSecretKeyValid(c.SecretKey) {
		return errInvalidArgument
	}
	return nil
}

// BatchJobReplicateTarget describes target element of the replication job that receives
// the filtered data from source
type BatchJobReplicateTarget struct {
	Type     BatchJobReplicateResourceType `yaml:"type" json:"type"`

	Location string   `xml:"LocationConstraint"`
}

// DeleteObjectsRequest - xml carrying the object key names which needs to be deleted.
type DeleteObjectsRequest struct {
	// Element to enable quiet mode for the request
	Quiet bool
	// List of objects to be deleted
	Objects []ObjectToDelete `xml:"Object"`