110 lines
2.4 KiB
Go
110 lines
2.4 KiB
Go
package datastore
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import (
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"fmt"
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"strings"
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"time"
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"github.com/thermokarst/bactdb/models"
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)
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func init() {
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DB.AddTableWithName(models.Measurement{}, "measurements").SetKeys(true, "Id")
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}
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type measurementsStore struct {
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*Datastore
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}
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func (s *measurementsStore) Get(id int64) (*models.Measurement, error) {
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var measurement []*models.Measurement
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if err := s.dbh.Select(&measurement, `SELECT * FROM measurements WHERE id=$1;`, id); err != nil {
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return nil, err
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}
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if len(measurement) == 0 {
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return nil, models.ErrMeasurementNotFound
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}
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return measurement[0], nil
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}
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func (s *measurementsStore) Create(measurement *models.Measurement) (bool, error) {
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currentTime := time.Now()
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measurement.CreatedAt = currentTime
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measurement.UpdatedAt = currentTime
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if err := s.dbh.Insert(measurement); err != nil {
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return false, err
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}
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return true, nil
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}
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func (s *measurementsStore) List(opt *models.MeasurementListOptions) ([]*models.Measurement, error) {
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if opt == nil {
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opt = &models.MeasurementListOptions{}
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}
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sql := `SELECT * FROM measurements`
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var conds []string
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var vals []interface{}
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if opt.Genus != "" {
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conds = append(conds, `strain_id IN (SELECT st.id FROM strains st
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INNER JOIN species sp ON sp.id = st.species_id
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INNER JOIN genera g ON g.id = sp.genus_id
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WHERE lower(g.genus_name) = $1)`)
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vals = append(vals, opt.Genus)
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}
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if len(conds) > 0 {
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sql += " WHERE (" + strings.Join(conds, ") AND (") + ")"
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}
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sql += fmt.Sprintf(" LIMIT $%v OFFSET $%v;", len(conds)+1, len(conds)+2)
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vals = append(vals, opt.PerPageOrDefault(), opt.Offset())
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var measurements []*models.Measurement
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err := s.dbh.Select(&measurements, sql, vals...)
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if err != nil {
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return nil, err
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}
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return measurements, nil
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}
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func (s *measurementsStore) Update(id int64, measurement *models.Measurement) (bool, error) {
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_, err := s.Get(id)
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if err != nil {
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return false, err
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}
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if id != measurement.Id {
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return false, models.ErrMeasurementNotFound
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}
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measurement.UpdatedAt = time.Now()
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changed, err := s.dbh.Update(measurement)
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if err != nil {
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return false, err
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}
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if changed == 0 {
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return false, ErrNoRowsUpdated
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}
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return true, nil
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}
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func (s *measurementsStore) Delete(id int64) (bool, error) {
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measurement, err := s.Get(id)
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if err != nil {
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return false, err
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}
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deleted, err := s.dbh.Delete(measurement)
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if err != nil {
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return false, err
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}
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if deleted == 0 {
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return false, ErrNoRowsDeleted
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}
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return true, nil
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}
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