From ad9e630abfa16731a1f5c33faef87754193dc201 Mon Sep 17 00:00:00 2001
From: Vladimir Mihailenco <vladimir.webdev@gmail.com>
Date: Thu, 27 Apr 2023 09:22:40 +0300
Subject: [PATCH] chore: remove bfloat16.Map

---
 ch/bfloat16/bfloat16.go | 6 ++----
 ch/chschema/column.go   | 4 ++--
 ch/chschema/types.go    | 4 +---
 3 files changed, 5 insertions(+), 9 deletions(-)

diff --git a/ch/bfloat16/bfloat16.go b/ch/bfloat16/bfloat16.go
index 1c57a27..dca22f4 100644
--- a/ch/bfloat16/bfloat16.go
+++ b/ch/bfloat16/bfloat16.go
@@ -4,15 +4,13 @@ import (
 	"math"
 )
 
-type Map map[T]uint64
-
 type T uint16
 
 func From(f float64) T {
-	return FromFloat32(float32(f))
+	return From32(float32(f))
 }
 
-func FromFloat32(f float32) T {
+func From32(f float32) T {
 	return T(math.Float32bits(f) >> 16)
 }
 
diff --git a/ch/chschema/column.go b/ch/chschema/column.go
index 2464c93..735540d 100644
--- a/ch/chschema/column.go
+++ b/ch/chschema/column.go
@@ -498,7 +498,7 @@ func (c *JSONColumn) WriteTo(wr *chproto.Writer) error {
 //------------------------------------------------------------------------------
 
 type BFloat16HistColumn struct {
-	ColumnOf[bfloat16.Map]
+	ColumnOf[map[bfloat16.T]uint64]
 }
 
 var _ Columnar = (*BFloat16HistColumn)(nil)
@@ -524,7 +524,7 @@ func (c *BFloat16HistColumn) ReadFrom(rd *chproto.Reader, numRow int) error {
 			return err
 		}
 
-		data := make(bfloat16.Map, n)
+		data := make(map[bfloat16.T]uint64, n)
 
 		for j := 0; j < int(n); j++ {
 			value, err := rd.UInt16()
diff --git a/ch/chschema/types.go b/ch/chschema/types.go
index 48519dd..f0e737b 100644
--- a/ch/chschema/types.go
+++ b/ch/chschema/types.go
@@ -32,7 +32,7 @@ var (
 	timeType        = reflect.TypeOf((*time.Time)(nil)).Elem()
 	ipType          = reflect.TypeOf((*net.IP)(nil)).Elem()
 	ipNetType       = reflect.TypeOf((*net.IPNet)(nil)).Elem()
-	bfloat16MapType = reflect.TypeOf((*bfloat16.Map)(nil)).Elem()
+	bfloat16MapType = reflect.TypeOf((*map[bfloat16.T]uint64)(nil)).Elem()
 
 	sliceUint64Type  = reflect.TypeOf((*[]uint64)(nil)).Elem()
 	sliceFloat32Type = reflect.TypeOf((*[]float32)(nil)).Elem()
@@ -114,8 +114,6 @@ func ColumnFactory(chType string, typ reflect.Type) NewColumnFunc {
 
 	case chtype.DateTime:
 		return NewDateTimeColumn
-	case chtype.DateTime64:
-		return NewDateTime64Column
 	case chtype.Date:
 		return NewDateColumn