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simple_aggregate_function.go
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/
simple_aggregate_function.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 (
"reflect"
"strings"
"github.com/timeplus-io/proton-go-driver/v2/lib/binary"
)
type SimpleAggregateFunction struct {
base Interface
chType Type
}
func (col *SimpleAggregateFunction) parse(t Type) (_ Interface, err error) {
col.chType = t
base := strings.TrimSpace(strings.SplitN(t.params(), ",", 2)[1])
if col.base, err = Type(base).Column(); err == nil {
return col, nil
}
return nil, &UnsupportedColumnTypeError{
t: t,
}
}
func (col *SimpleAggregateFunction) Type() Type {
return col.chType
}
func (col *SimpleAggregateFunction) ScanType() reflect.Type {
return col.base.ScanType()
}
func (col *SimpleAggregateFunction) Rows() int {
return col.base.Rows()
}
func (col *SimpleAggregateFunction) Row(i int, ptr bool) interface{} {
return col.base.Row(i, ptr)
}
func (col *SimpleAggregateFunction) ScanRow(dest interface{}, rows int) error {
return col.base.ScanRow(dest, rows)
}
func (col *SimpleAggregateFunction) Append(v interface{}) ([]uint8, error) {
return col.base.Append(v)
}
func (col *SimpleAggregateFunction) AppendRow(v interface{}) error {
return col.base.AppendRow(v)
}
func (col *SimpleAggregateFunction) Decode(decoder *binary.Decoder, rows int) error {
return col.base.Decode(decoder, rows)
}
func (col *SimpleAggregateFunction) Encode(encoder *binary.Encoder) error {
return col.base.Encode(encoder)
}
var _ Interface = (*SimpleAggregateFunction)(nil)