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package pagination
// MarkerPage is a stricter Page interface that describes additional functionality required for use with NewMarkerPager.
// For convenience, embed the MarkedPageBase struct.
type MarkerPage interface {
Page
// LastMarker returns the last "marker" value on this page.
LastMarker() (string, error)
}
// MarkerPageBase is a page in a collection that's paginated by "limit" and "marker" query parameters.
type MarkerPageBase struct {
PageResult
// Owner is a reference to the embedding struct.
Owner MarkerPage
}
// NextPageURL generates the URL for the page of results after this one.
func (current MarkerPageBase) NextPageURL() (string, error) {
currentURL := current.URL
mark, err := current.Owner.LastMarker()
if err != nil {
return "", err
}
q := currentURL.Query()
q.Set("marker", mark)
currentURL.RawQuery = q.Encode()
return currentURL.String(), nil
}
// GetBody returns the linked page's body. This method is needed to satisfy the
// Page interface.
func (current MarkerPageBase) GetBody() interface{} {
return current.Body
}
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