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geo_point.go
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geo_point.go
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// Licensed to ClickHouse, Inc. under one or more contributor
// license agreements. See the NOTICE file distributed with
// this work for additional information regarding copyright
// ownership. ClickHouse, Inc. licenses this file to you under
// the Apache License, Version 2.0 (the "License"); you may
// not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing,
// software distributed under the License is distributed on an
// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
// KIND, either express or implied. See the License for the
// specific language governing permissions and limitations
// under the License.
package column
import (
"fmt"
"reflect"
"github.com/ClickHouse/clickhouse-go/v2/lib/binary"
"github.com/paulmach/orb"
)
type Point struct {
lon Float64
lat Float64
}
func (col *Point) Type() Type {
return "Point"
}
func (col *Point) ScanType() reflect.Type {
return scanTypePoint
}
func (col *Point) Rows() int {
return col.lon.Rows()
}
func (col *Point) Row(i int, ptr bool) interface{} {
value := col.row(i)
if ptr {
return &value
}
return value
}
func (col *Point) ScanRow(dest interface{}, row int) error {
switch d := dest.(type) {
case *orb.Point:
*d = col.row(row)
case **orb.Point:
*d = new(orb.Point)
**d = col.row(row)
default:
return &ColumnConverterError{
Op: "ScanRow",
To: fmt.Sprintf("%T", dest),
From: "Point",
Hint: fmt.Sprintf("try using *%s", col.ScanType()),
}
}
return nil
}
func (col *Point) Append(v interface{}) (nulls []uint8, err error) {
switch v := v.(type) {
case []orb.Point:
nulls = make([]uint8, len(v))
for _, v := range v {
col.lon = append(col.lon, v.Lon())
col.lat = append(col.lat, v.Lat())
}
default:
return nil, &ColumnConverterError{
Op: "Append",
To: "Point",
From: fmt.Sprintf("%T", v),
}
}
return
}
func (col *Point) AppendRow(v interface{}) error {
switch v := v.(type) {
case orb.Point:
col.lon = append(col.lon, v.Lon())
col.lat = append(col.lat, v.Lat())
default:
return &ColumnConverterError{
Op: "AppendRow",
To: "Point",
From: fmt.Sprintf("%T", v),
}
}
return nil
}
func (col *Point) Decode(decoder *binary.Decoder, rows int) error {
if err := col.lon.Decode(decoder, rows); err != nil {
return err
}
if err := col.lat.Decode(decoder, rows); err != nil {
return err
}
return nil
}
func (col *Point) Encode(encoder *binary.Encoder) error {
if err := col.lon.Encode(encoder); err != nil {
return err
}
return col.lat.Encode(encoder)
}
func (col *Point) row(i int) orb.Point {
return orb.Point{
col.lon[i],
col.lat[i],
}
}
var _ Interface = (*Point)(nil)