104 lines
3.2 KiB
Go
104 lines
3.2 KiB
Go
package main
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import (
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"encoding/json"
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"errors"
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"fmt"
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"strings"
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"time"
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)
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func init() {
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DB.AddTableWithName(CharacteristicBase{}, "characteristics").SetKeys(true, "Id")
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}
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type CharacteristicService struct{}
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// A Characteristic is a lookup type
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type CharacteristicBase struct {
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Id int64 `json:"id,omitempty"`
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CharacteristicName string `db:"characteristic_name" json:"characteristicName"`
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CharacteristicTypeId int64 `db:"characteristic_type_id" json:"-"`
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CreatedAt time.Time `db:"created_at" json:"createdAt"`
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UpdatedAt time.Time `db:"updated_at" json:"updatedAt"`
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DeletedAt NullTime `db:"deleted_at" json:"deletedAt"`
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CreatedBy int64 `db:"created_by" json:"createdBy"`
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UpdatedBy int64 `db:"updated_by" json:"updatedBy"`
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DeletedBy NullInt64 `db:"deleted_by" json:"deletedBy"`
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}
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type Characteristic struct {
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*CharacteristicBase
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Measurements NullSliceInt64 `db:"measurements" json:"measurements"`
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Strains NullSliceInt64 `db:"strains" json:"strains"`
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CharacteristicTypeName string `db:"characteristic_type_name" json:"characteristicType"`
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}
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type Characteristics []*Characteristic
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type CharacteristicJSON struct {
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Characteristic *Characteristic `json:"characteristic"`
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}
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type CharacteristicsJSON struct {
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Characteristics *Characteristics `json:"characteristics"`
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}
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func (c *Characteristic) marshal() ([]byte, error) {
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return json.Marshal(&CharacteristicJSON{Characteristic: c})
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}
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func (c *Characteristics) marshal() ([]byte, error) {
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return json.Marshal(&CharacteristicsJSON{Characteristics: c})
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}
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func (c CharacteristicService) list(opt *ListOptions) (entity, error) {
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if opt == nil {
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return nil, errors.New("must provide options")
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}
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var vals []interface{}
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sql := `SELECT c.*, ct.characteristic_type_name,
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array_agg(m.id) AS measurements, array_agg(st.id) AS strains
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FROM characteristics c
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INNER JOIN characteristic_types ct ON ct.id=characteristic_type_id
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LEFT OUTER JOIN measurements m ON m.characteristic_id=c.id
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LEFT OUTER JOIN strains st ON st.id=m.strain_id`
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if len(opt.Ids) != 0 {
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var conds []string
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c := "c.id IN ("
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for i, id := range opt.Ids {
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c = c + fmt.Sprintf("$%v,", i+1) // start param index at 1
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vals = append(vals, id)
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}
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c = c[:len(c)-1] + ")"
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conds = append(conds, c)
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sql += " WHERE (" + strings.Join(conds, ") AND (") + ")"
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}
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sql += " GROUP BY c.id, ct.characteristic_type_name;"
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var characteristics Characteristics
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err := DBH.Select(&characteristics, 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 &characteristics, nil
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}
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func (c CharacteristicService) get(id int64, dummy string) (entity, error) {
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var characteristic Characteristic
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sql := `SELECT c.*, ct.characteristic_type_name,
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array_agg(m.id) AS measurements, array_agg(st.id) AS strains
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FROM characteristics c
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INNER JOIN characteristic_types ct ON ct.id=characteristic_type_id
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LEFT OUTER JOIN measurements m ON m.characteristic_id=c.id
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LEFT OUTER JOIN strains st ON st.id=m.strain_id
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WHERE c.id=$1
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GROUP BY c.id, ct.characteristic_type_name;`
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if err := DBH.SelectOne(&characteristic, sql, id); err != nil {
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return nil, err
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}
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return &characteristic, nil
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}
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