felipecrv commented on code in PR #34079:
URL: https://github.com/apache/arrow/pull/34079#discussion_r1100788244
##########
go/arrow/scalar/nested.go:
##########
@@ -744,3 +745,72 @@ func (s *DenseUnion) ChildValue() Scalar { return s.Value }
func NewDenseUnionScalar(v Scalar, code arrow.UnionTypeCode, dt
*arrow.DenseUnionType) *DenseUnion {
return &DenseUnion{scalar: scalar{dt, v.IsValid()}, TypeCode: code,
Value: v}
}
+
+type RunEndEncoded struct {
+ scalar
+
+ RunLength int64
+ Value Scalar
+}
+
+func NewRunEndEncodedScalar(v Scalar, runLength int64, dt
*arrow.RunEndEncodedType) *RunEndEncoded {
+ return &RunEndEncoded{scalar: scalar{dt, true}, RunLength: runLength,
Value: v}
+}
+
+func (s *RunEndEncoded) Release() {
+ if r, ok := s.Value.(Releasable); ok {
+ r.Release()
+ }
+}
+
+func (s *RunEndEncoded) value() interface{} { return s.Value.value() }
+
+func (s *RunEndEncoded) Validate() (err error) {
+ if err = s.Value.Validate(); err != nil {
+ return
+ }
+
+ if err = validateOptional(&s.scalar, s.value(), "value"); err != nil {
+ return
+ }
+
+ if !s.Valid {
+ return
+ }
+
+ if s.Type.ID() != arrow.RUN_END_ENCODED {
+ err = fmt.Errorf("%w: run-end-encoded scalar should not have
type %s",
+ arrow.ErrInvalid, s.Type)
+ }
+ return
+}
+
+func (s *RunEndEncoded) ValidateFull() error { return s.Validate() }
+
+func (s *RunEndEncoded) equals(rhs Scalar) bool {
+ other := rhs.(*RunEndEncoded)
+ return s.RunLength == other.RunLength && Equals(s.Value, other.Value)
Review Comment:
if one of the `RunLength`s is `0`, we shouldn't take the values into account
in the comparison
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