65 lines
1.0 KiB
Go
65 lines
1.0 KiB
Go
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package db
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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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)
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// JSON represents a JSON value in the database
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type JSON[T any] struct {
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Val T
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}
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// NewJSON creates a new database JSON value
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func NewJSON[T any](v T) JSON[T] {
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return JSON[T]{Val: v}
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}
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func (s *JSON[T]) Scan(val any) error {
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if val == nil {
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return nil
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}
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switch val := val.(type) {
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case string:
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err := json.Unmarshal([]byte(val), &s.Val)
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if err != nil {
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return err
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}
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case sql.NullString:
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if val.Valid {
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err := json.Unmarshal([]byte(val.String), &s.Val)
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if err != nil {
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return err
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}
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}
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default:
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return errors.New("sqlite json types must be strings")
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}
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return nil
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}
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func (s JSON[T]) Value() (driver.Value, error) {
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data, err := json.Marshal(s.Val)
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if err != nil {
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return nil, err
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}
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return string(data), nil
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}
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func (s JSON[T]) MarshalYAML() (any, error) {
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return s.Val, nil
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}
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func (s JSON[T]) String() string {
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return fmt.Sprint(s.Val)
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}
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func (s JSON[T]) GoString() string {
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return fmt.Sprintf("%#v", s.Val)
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}
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