/
gonull.go
154 lines (123 loc) · 2.59 KB
/
gonull.go
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package gonull
import (
"time"
"database/sql"
"encoding/json"
)
type NullString struct {
sql.NullString
}
type NullInt32 struct {
sql.NullInt32
}
type NullInt64 struct {
sql.NullInt64
}
type NullBool struct {
sql.NullBool
}
type NullTime struct {
sql.NullTime
}
func (response NullString) MarshalJSON() ([]byte, error) {
if response.Valid {
return json.Marshal(response.String)
} else {
return json.Marshal(nil)
}
}
func (response *NullString) UnmarshalJSON(data []byte) error {
var str *string
if err := json.Unmarshal(data, &str); err != nil {
return err
}
if str != nil {
if *str != "" {
response.Valid = true
response.String = *str
}
} else {
response.Valid = false
}
return nil
}
func (response NullInt32) MarshalJSON() ([]byte, error) {
if response.Valid {
return json.Marshal(response.Int32)
} else {
return json.Marshal(nil)
}
}
func (response *NullInt32) UnmarshalJSON(data []byte) error {
var i *int32
if err := json.Unmarshal(data, &i); err != nil {
return err
}
if i != nil {
response.Valid = true
response.Int32 = *i
} else {
response.Valid = false
}
return nil
}
func (response NullInt64) MarshalJSON() ([]byte, error) {
if response.Valid {
return json.Marshal(response.Int64)
} else {
return json.Marshal(nil)
}
}
func (response *NullInt64) UnmarshalJSON(data []byte) error {
var i *int64
if err := json.Unmarshal(data, &i); err != nil {
return err
}
if i != nil {
response.Valid = true
response.Int64 = *i
} else {
response.Valid = false
}
return nil
}
func (response NullBool) MarshalJSON() ([]byte, error) {
if response.Valid {
return json.Marshal(response.Bool)
} else {
return json.Marshal(nil)
}
}
func (response *NullBool) UnmarshalJSON(data []byte) error {
var b *bool
if err := json.Unmarshal(data, &b); err != nil {
return err
}
if b != nil {
response.Valid = true
response.Bool = *b
} else {
response.Valid = false
}
return nil
}
func (response NullTime) MarshalJSON() ([]byte, error) {
if response.Valid {
return json.Marshal(response.Time)
} else {
return json.Marshal(nil)
}
}
func (response *NullTime) UnmarshalJSON(data []byte) error {
var t *time.Time
if err := json.Unmarshal(data, &t); err != nil {
return err
}
if t != nil {
response.Valid = true
response.Time = *t
} else {
response.Valid = false
}
return nil
}