paging

package

v1.9.2 Latest Latest Go to latest Published: Nov 4, 2026 License: MIT Imports: 3 Imported by: 0

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Valid go.mod file
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Repository

github.com/xraph/nexus

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Documentation ¶

Overview ¶

Package paging holds the cursor rules every Nexus list shares. Lists are ordered newest first by ID (IDs are UUIDv7 TypeIDs, so their text sorts in creation order), and a page is continued from the last ID it returned. There are no totals: a total on a growing list is expensive and usually an estimate.

Index ¶

Constants
Variables
func CheckCursor(cursor string, prefix id.Prefix) error
func Limit(n int) int
func Trim[T any](rows []T, limit int, idOf func(T) string) (page []T, next string)

Constants ¶

View Source

const (
	// DefaultLimit is the page size when none is asked for.
	DefaultLimit = 50
	// MaxLimit is the largest page a store returns.
	MaxLimit = 500
)

Variables ¶

View Source

var ErrInvalidCursor = errors.New("nexus: invalid cursor")

ErrInvalidCursor reports a cursor that is not an ID from the list it was handed to. It is never treated as "start again from the top".

Functions ¶

func CheckCursor ¶

func CheckCursor(cursor string, prefix id.Prefix) error

CheckCursor accepts "" (the first page) or an ID of the given kind.

func Limit ¶

func Limit(n int) int

Limit clamps a requested page size.

func Trim ¶

func Trim[T any](rows []T, limit int, idOf func(T) string) (page []T, next string)

Trim takes the limit+1 rows a store fetched and returns the page and the cursor for the next one, or "" when this is the last page.

Types ¶

This section is empty.

Source Files ¶

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paging.go

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