Method addContinueConstraint

pkg/search/query.go:196–234

addContinueConstraint conditionally modifies q.Constraint to scroll past the results as indicated by q.Continue.

()

// addContinueConstraint conditionally modifies q.Constraint to scroll
// past the results as indicated by q.Continue.
func (q *SearchQuery) addContinueConstraint() error {
	cont := q.Continue
	if cont == "" {
		return nil
	}
	if q.Constraint.onlyMatchesPermanode() {
		tokent, lastbr, ok := parsePermanodeContinueToken(cont)
		if !ok {
			return errors.New("Unexpected continue token")
		}
		if q.Sort == LastModifiedDesc || q.Sort == CreatedDesc {
			var lastMod, lastCreated time.Time
			switch q.Sort {
			case LastModifiedDesc:
				lastMod = tokent
			case CreatedDesc:
				lastCreated = tokent
			}
			baseConstraint := q.Constraint
			q.Constraint = &Constraint{
				Logical: &LogicalConstraint{
					Op: "and",
					A: &Constraint{
						Permanode: &PermanodeConstraint{
							Continue: &PermanodeContinueConstraint{
								LastCreated: lastCreated,
								LastMod:     lastMod,
								Last:        lastbr,
							},
						},
					},
					B: baseConstraint,
				},
			}
		}
		return nil
	}
	return errors.New("token not valid for query type")
}

func (q *SearchQuery) checkValid(ctx context.Context) (sq *SearchQuery, err error) {
	if q.Sort >= maxSortType || q.Sort < 0 {