zeroshade commented on code in PR #13768:
URL: https://github.com/apache/arrow/pull/13768#discussion_r937000975
##########
go/arrow/datatype_nested.go:
##########
@@ -329,6 +333,208 @@ func (t *MapType) Layout() DataTypeLayout {
return t.value.Layout()
}
+type (
+ UnionTypeCode = int8
+ UnionMode int8
+)
+
+const (
+ MaxUnionTypeCode UnionTypeCode = 127
+ InvalidUnionChildID int = -1
+
+ SparseMode UnionMode = iota
+ DenseMode
+)
+
+type UnionType interface {
+ NestedType
+ Mode() UnionMode
+ ChildIDs() []int
+ TypeCodes() []UnionTypeCode
Review Comment:
Added comments along with an example
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