/
geo.go
112 lines (103 loc) · 2.39 KB
/
geo.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 clickhouse_api
import (
"context"
"fmt"
"github.com/ClickHouse/clickhouse-go/v2"
"github.com/paulmach/orb"
)
func GeoInsertRead() error {
conn, err := GetNativeConnection(clickhouse.Settings{
"allow_experimental_geo_types": 1,
}, nil, nil)
if err != nil {
return err
}
ctx := context.Background()
conn.Exec(ctx, "DROP TABLE IF EXISTS example")
if err = conn.Exec(ctx, `
CREATE TABLE example (
point Point,
ring Ring,
polygon Polygon,
mPolygon MultiPolygon
)
Engine Memory
`); err != nil {
return err
}
batch, err := conn.PrepareBatch(ctx, "INSERT INTO example")
if err != nil {
return err
}
if err = batch.Append(
orb.Point{11, 22},
orb.Ring{
orb.Point{1, 2},
orb.Point{1, 2},
},
orb.Polygon{
orb.Ring{
orb.Point{1, 2},
orb.Point{12, 2},
},
orb.Ring{
orb.Point{11, 2},
orb.Point{1, 12},
},
},
orb.MultiPolygon{
orb.Polygon{
orb.Ring{
orb.Point{1, 2},
orb.Point{12, 2},
},
orb.Ring{
orb.Point{11, 2},
orb.Point{1, 12},
},
},
orb.Polygon{
orb.Ring{
orb.Point{1, 2},
orb.Point{12, 2},
},
orb.Ring{
orb.Point{11, 2},
orb.Point{1, 12},
},
},
},
); err != nil {
return err
}
if err = batch.Send(); err != nil {
return err
}
var (
point orb.Point
ring orb.Ring
polygon orb.Polygon
mPolygon orb.MultiPolygon
)
if err = conn.QueryRow(ctx, "SELECT * FROM example").Scan(&point, &ring, &polygon, &mPolygon); err != nil {
return err
}
fmt.Printf("point=%v, ring=%v, polygon=%v, mPoilygon=%v\n", point, ring, polygon, mPolygon)
return nil
}