mirror of https://github.com/go-gorm/gorm.git
82 lines
1.3 KiB
Go
82 lines
1.3 KiB
Go
package postgres
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import (
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"database/sql"
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"database/sql/driver"
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"encoding/json"
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"errors"
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"fmt"
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_ "github.com/lib/pq"
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"github.com/lib/pq/hstore"
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)
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type Hstore map[string]*string
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// Value get value of Hstore
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func (h Hstore) Value() (driver.Value, error) {
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hstore := hstore.Hstore{Map: map[string]sql.NullString{}}
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if len(h) == 0 {
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return nil, nil
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}
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for key, value := range h {
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var s sql.NullString
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if value != nil {
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s.String = *value
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s.Valid = true
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}
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hstore.Map[key] = s
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}
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return hstore.Value()
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}
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// Scan scan value into Hstore
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func (h *Hstore) Scan(value interface{}) error {
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hstore := hstore.Hstore{}
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if err := hstore.Scan(value); err != nil {
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return err
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}
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if len(hstore.Map) == 0 {
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return nil
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}
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*h = Hstore{}
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for k := range hstore.Map {
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if hstore.Map[k].Valid {
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s := hstore.Map[k].String
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(*h)[k] = &s
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} else {
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(*h)[k] = nil
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}
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}
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return nil
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}
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// Jsonb Postgresql's JSONB data type
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type Jsonb struct {
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json.RawMessage
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}
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// Value get value of Jsonb
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func (j Jsonb) Value() (driver.Value, error) {
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if len(j.RawMessage) == 0 {
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return nil, nil
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}
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return j.MarshalJSON()
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}
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// Scan scan value into Jsonb
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func (j *Jsonb) Scan(value interface{}) error {
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bytes, ok := value.([]byte)
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if !ok {
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return errors.New(fmt.Sprint("Failed to unmarshal JSONB value:", value))
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}
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return json.Unmarshal(bytes, j)
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}
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