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int32.go
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int32.go
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package nulltype
import (
"database/sql"
"database/sql/driver"
"encoding/json"
"fmt"
)
type Int32 struct {
Data sql.NullInt32
}
func NewInt32(data *int32) Int32 {
if data == nil {
return Int32{}
}
return Int32{
Data: sql.NullInt32{
Int32: *data,
Valid: true,
},
}
}
// Methods for the user
func (t *Int32) Valid() bool {
return t.Data.Valid
}
func (t *Int32) Get() int32 {
return t.Data.Int32
}
func (t *Int32) GetPtr() *int32 {
if !t.Valid() {
return nil
}
val := t.Get()
return &val
}
func (t *Int32) Reset() {
t.Data = sql.NullInt32{
Int32: 0,
Valid: false,
}
}
func (t *Int32) Set(data int32) {
t.Data = sql.NullInt32{
Int32: data,
Valid: true,
}
}
// fmt
func (t *Int32) String() string {
if !t.Valid() {
return ""
}
return fmt.Sprint(t.Data.Int32)
}
// SQL
func (t *Int32) Scan(value interface{}) error {
return t.Data.Scan(value)
}
func (t *Int32) Value() (driver.Value, error) {
if !t.Valid() {
return nil, nil
}
return t.Data.Value()
}
// JSON
func (t *Int32) UnmarshalJSON(data []byte) error {
var value *int32
if err := json.Unmarshal(data, &value); err != nil {
return err
}
if value == nil {
t.Data = sql.NullInt32{
Int32: 0,
Valid: false,
}
return nil
}
t.Data = sql.NullInt32{
Int32: *value,
Valid: true,
}
return nil
}
func (t *Int32) MarshalJSON() ([]byte, error) {
if !t.Valid() {
return []byte("null"), nil
}
return json.Marshal(t.Data.Int32)
}