twuebi commented on code in PR #594:
URL: https://github.com/apache/iceberg-go/pull/594#discussion_r2413472977
##########
types.go:
##########
@@ -677,32 +701,77 @@ func (BinaryType) primitive() {}
func (BinaryType) Type() string { return "binary" }
func (BinaryType) String() string { return "binary" }
+// TimestampNsType represents a timestamp stored as nanoseconds since the unix
epoch
+// without regard for timezone. Requires format version 3+.
+type TimestampNsType struct{}
+
+func (TimestampNsType) Equals(other Type) bool {
+ _, ok := other.(TimestampNsType)
+
+ return ok
+}
+
+func (TimestampNsType) primitive() {}
+func (TimestampNsType) Type() string { return "timestamp_ns" }
+func (TimestampNsType) String() string { return "timestamp_ns" }
+
+// TimestampTzNsType represents a timestamp stored as UTC with nanoseconds
since
+// the unix epoch. Requires format version 3+.
+type TimestampTzNsType struct{}
+
+func (TimestampTzNsType) Equals(other Type) bool {
+ _, ok := other.(TimestampTzNsType)
+
+ return ok
+}
+
+func (TimestampTzNsType) primitive() {}
+func (TimestampTzNsType) Type() string { return "timestamptz_ns" }
+func (TimestampTzNsType) String() string { return "timestamptz_ns" }
+
var PrimitiveTypes = struct {
- Bool PrimitiveType
- Int32 PrimitiveType
- Int64 PrimitiveType
- Float32 PrimitiveType
- Float64 PrimitiveType
- Date PrimitiveType
- Time PrimitiveType
- Timestamp PrimitiveType
- TimestampTz PrimitiveType
- String PrimitiveType
- Binary PrimitiveType
- UUID PrimitiveType
+ Bool PrimitiveType
+ Int32 PrimitiveType
+ Int64 PrimitiveType
+ Float32 PrimitiveType
+ Float64 PrimitiveType
+ Date PrimitiveType
+ Time PrimitiveType
+ Timestamp PrimitiveType
+ TimestampTz PrimitiveType
+ TimestampNs PrimitiveType
+ TimestampTzNs PrimitiveType
+ String PrimitiveType
+ Binary PrimitiveType
+ UUID PrimitiveType
}{
- Bool: BooleanType{},
- Int32: Int32Type{},
- Int64: Int64Type{},
- Float32: Float32Type{},
- Float64: Float64Type{},
- Date: DateType{},
- Time: TimeType{},
- Timestamp: TimestampType{},
- TimestampTz: TimestampTzType{},
- String: StringType{},
- Binary: BinaryType{},
- UUID: UUIDType{},
+ Bool: BooleanType{},
+ Int32: Int32Type{},
+ Int64: Int64Type{},
+ Float32: Float32Type{},
+ Float64: Float64Type{},
+ Date: DateType{},
+ Time: TimeType{},
+ Timestamp: TimestampType{},
+ TimestampTz: TimestampTzType{},
+ TimestampNs: TimestampNsType{},
+ TimestampTzNs: TimestampTzNsType{},
+ String: StringType{},
+ Binary: BinaryType{},
+ UUID: UUIDType{},
+}
+
+// MinFormatVersionForType returns the minimum table format version required
+// for the given type. Returns 1 for types supported in all versions, or a
higher
+// version number for types that require newer format versions.
+func MinFormatVersionForType(t Type) int {
+ switch t.(type) {
+ case TimestampNsType, TimestampTzNsType:
+ return 3
+ default:
+ // All other types supported in v1+
+ return 1
+ }
Review Comment:
I prefer the single source style here, IMO a style question
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