Method Page

tx.go:668–695

Page returns page information for a given page number. This is only safe for concurrent use when used by a writable transaction.

(id int)

// Page returns page information for a given page number.
// This is only safe for concurrent use when used by a writable transaction.
func (tx *Tx) Page(id int) (*common.PageInfo, error) {
	if tx.db == nil {
		return nil, berrors.ErrTxClosed
	} else if common.Pgid(id) >= tx.meta.Pgid() {
		return nil, nil
	}

	if tx.db.freelist == nil {
		return nil, berrors.ErrFreePagesNotLoaded
	}

	// Build the page info.
	p := tx.db.page(common.Pgid(id))
	info := &common.PageInfo{
		ID:            id,
		Count:         int(p.Count()),
		OverflowCount: int(p.Overflow()),
	}

	// Determine the type (or if it's free).
	if tx.db.freelist.Freed(common.Pgid(id)) {
		info.Type = "free"
	} else {
		info.Type = p.Typ()
	}

	return info, nil
}

// TxStats represents statistics about the actions performed by the transaction.
type TxStats struct {