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date64.go
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date64.go
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package scalar
import (
"encoding"
"fmt"
"time"
"github.com/apache/arrow/go/v16/arrow"
)
type Date64 struct {
Valid bool
Value arrow.Date64
}
func (s *Date64) IsValid() bool {
return s.Valid
}
func (*Date64) DataType() arrow.DataType {
return arrow.FixedWidthTypes.Date64
}
func (s *Date64) Equal(rhs Scalar) bool {
if rhs == nil {
return false
}
r, ok := rhs.(*Date64)
if !ok {
return false
}
return s.Valid == r.Valid && s.Value == r.Value
}
func (s *Date64) String() string {
if !s.Valid {
return nullValueStr
}
return s.Value.FormattedString()
}
func (s *Date64) Get() any {
return s.Value
}
func (s *Date64) Set(val any) error {
if val == nil {
s.Valid = false
return nil
}
if sc, ok := val.(Scalar); ok {
if !sc.IsValid() {
s.Valid = false
return nil
}
return s.Set(sc.Get())
}
switch value := val.(type) {
case arrow.Date64:
s.Value = value
case time.Time:
return s.Set(arrow.Date64FromTime(value))
case *time.Time:
if value == nil {
s.Valid = false
return nil
}
return s.Set(*value)
case string:
if value == "" {
s.Valid = false
return nil
}
p, err := time.Parse("2006-01-02", value)
if err != nil {
return &ValidationError{Type: s.DataType(), Msg: "cannot parse date", Value: value, Err: err}
}
return s.Set(p)
case *string:
if value == nil {
s.Valid = false
return nil
}
return s.Set(*value)
default:
if originalSrc, ok := underlyingTimeType(val); ok {
return s.Set(originalSrc)
}
if value, ok := value.(encoding.TextMarshaler); ok {
text, err := value.MarshalText()
if err == nil {
return s.Set(string(text))
}
// fall through to String() method
}
if value, ok := value.(fmt.Stringer); ok {
str := value.String()
return s.Set(str)
}
return &ValidationError{Type: s.DataType(), Msg: noConversion, Value: value}
}
s.Valid = true
return nil
}