badalprasadsingh commented on code in PR #524:
URL: https://github.com/apache/iceberg-go/pull/524#discussion_r2343804204
##########
exprs.go:
##########
@@ -492,6 +493,63 @@ func (b *boundRef[T]) eval(st structLike) Optional[T] {
case T:
return Optional[T]{Valid: true, Val: v}
default:
+ if t, ok := v.(time.Time); ok {
+ switch b.field.Type.(type) {
+ case DateType:
+ days := int32(t.Truncate(24*time.Hour).Unix() /
int64((time.Hour * 24).Seconds()))
+ if converted, ok := any(Date(days)).(T); ok {
+ return Optional[T]{Valid: true, Val:
converted}
+ }
+ case TimestampType, TimestampTzType:
+ micros := Timestamp(t.UTC().UnixMicro())
+ if converted, ok := any(micros).(T); ok {
+ return Optional[T]{Valid: true, Val:
converted}
+ }
+ case Int32Type:
+ days := int32(t.Truncate(24*time.Hour).Unix() /
int64((time.Hour * 24).Seconds()))
+ if converted, ok := any(days).(T); ok {
+ return Optional[T]{Valid: true, Val:
converted}
+ }
+ }
+ }
+
+ if unionMap, ok := v.(map[string]any); ok {
+ switch b.field.Type.(type) {
+ case DecimalType:
+ if fixedVal, exists := unionMap["fixed"];
exists {
+ if fixedArray :=
reflect.ValueOf(fixedVal); fixedArray.Kind() == reflect.Array {
+ bytes := make([]byte,
fixedArray.Len())
+ for i := range bytes {
+ bytes[i] =
fixedArray.Index(i).Interface().(byte)
+ }
+
+ var decimal DecimalLiteral
+ if err :=
decimal.UnmarshalBinary(bytes); err == nil {
+ if decType, ok :=
b.field.Type.(DecimalType); ok {
+ result :=
Decimal{Val: decimal.Val, Scale: decType.Scale()}
+ if converted,
ok := any(result).(T); ok {
+ return
Optional[T]{Valid: true, Val: converted}
+ }
+ }
+ }
+ }
+ }
+ case UUIDType:
+ if uuidVal, exists := unionMap["uuid"]; exists {
+ if uuidArray :=
reflect.ValueOf(uuidVal); uuidArray.Kind() == reflect.Array && uuidArray.Len()
== 16 {
+ var uuidBytes [16]byte
+ for i := 0; i < 16; i++ {
+ uuidBytes[i] =
uuidArray.Index(i).Interface().(byte)
+ }
+ result := uuid.UUID(uuidBytes)
+ if converted, ok :=
any(result).(T); ok {
+ return
Optional[T]{Valid: true, Val: converted}
+ }
+ }
+ }
+ }
+ }
Review Comment:
Totally agree! my apologies for making the type conversions so messy.
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