110 lines
2.3 KiB
Go
110 lines
2.3 KiB
Go
package datastore
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import (
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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.StrainBase{}, "strains").SetKeys(true, "Id")
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}
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type strainsStore struct {
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*Datastore
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}
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func (s *strainsStore) Get(id int64) (*models.Strain, error) {
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var strain models.Strain
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err := s.dbh.SelectOne(&strain, `SELECT s.*, array_agg(m.id) AS measurements FROM strains s LEFT OUTER JOIN measurements m ON m.strain_id=s.id WHERE s.id=$1 GROUP BY s.id;`, id)
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if err != nil {
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return nil, err
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}
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if &strain == nil {
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return nil, models.ErrStrainNotFound
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}
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return &strain, nil
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}
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func (s *strainsStore) Create(strain *models.Strain) (bool, error) {
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currentTime := time.Now()
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strain.CreatedAt = currentTime
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strain.UpdatedAt = currentTime
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base := strain.StrainBase
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if err := s.dbh.Insert(base); err != nil {
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return false, err
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}
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strain.Id = base.Id
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return true, nil
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}
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func (s *strainsStore) List(opt *models.StrainListOptions) ([]*models.Strain, error) {
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if opt == nil {
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opt = &models.StrainListOptions{}
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}
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sql := `SELECT s.*, array_agg(m.id) AS measurements FROM strains s LEFT OUTER JOIN measurements m ON m.strain_id=s.id`
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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, `s.species_id IN (SELECT s.id FROM species s
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INNER JOIN genera g ON g.id = s.genus_id 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 += " GROUP BY s.id;"
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var strains []*models.Strain
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err := s.dbh.Select(&strains, 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 strains, nil
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}
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func (s *strainsStore) Update(id int64, strain *models.Strain) (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 != strain.Id {
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return false, models.ErrStrainNotFound
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}
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strain.UpdatedAt = time.Now()
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changed, err := s.dbh.Update(strain.StrainBase)
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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 *strainsStore) Delete(id int64) (bool, error) {
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strain, 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(strain.StrainBase)
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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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