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// Copyright 2020 PingCAP, Inc.
//
// Licensed 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,
// See the License for the specific language governing permissions and
// limitations under the License.
package aggfuncs
import (
"github.com/pingcap/tidb/sessionctx"
"github.com/pingcap/tidb/util/chunk"
)
type baseCount struct {
baseAggFunc
}
type partialResult4Count = int64
func (e *baseCount) AllocPartialResult() PartialResult {
return PartialResult(new(partialResult4Count))
}
func (e *baseCount) ResetPartialResult(pr PartialResult) {
p := (*partialResult4Count)(pr)
*p = 0
}
func (e *baseCount) AppendFinalResult2Chunk(sctx sessionctx.Context, pr PartialResult, chk *chunk.Chunk) error {
p := (*partialResult4Count)(pr)
chk.AppendInt64(e.ordinal, *p)
return nil
}
type countOriginal4Int struct {
baseCount
}
func (e *countOriginal4Int) UpdatePartialResult(sctx sessionctx.Context, rowsInGroup []chunk.Row, pr PartialResult) error {
p := (*partialResult4Count)(pr)
for _, row := range rowsInGroup {
_, isNull, err := e.args[0].EvalInt(sctx, row)
if err != nil {
return err
}
if isNull {
continue
}
*p++
}
return nil
}
func (e *countOriginal4Int) Slide(sctx sessionctx.Context, rows []chunk.Row, lastStart, lastEnd uint64, shiftStart, shiftEnd uint64, pr PartialResult) error {
p := (*partialResult4Count)(pr)
for i := uint64(0); i < shiftStart; i++ {
_, isNull, err := e.args[0].EvalInt(sctx, rows[lastStart+i])
if err != nil {
return err
}
if isNull {
continue
}
*p--
}
for i := uint64(0); i < shiftEnd; i++ {
_, isNull, err := e.args[0].EvalInt(sctx, rows[lastEnd+i])
if err != nil {
return err
}
if isNull {
continue
}
*p++
}
return nil
}
type countOriginal4Real struct {
baseCount
}
func (e *countOriginal4Real) UpdatePartialResult(sctx sessionctx.Context, rowsInGroup []chunk.Row, pr PartialResult) error {
p := (*partialResult4Count)(pr)
for _, row := range rowsInGroup {
_, isNull, err := e.args[0].EvalReal(sctx, row)
if err != nil {
return err
}
if isNull {
continue
}
*p++
}
return nil
}
func (e *countOriginal4Real) Slide(sctx sessionctx.Context, rows []chunk.Row, lastStart, lastEnd uint64, shiftStart, shiftEnd uint64, pr PartialResult) error {
p := (*partialResult4Count)(pr)
for i := uint64(0); i < shiftStart; i++ {
_, isNull, err := e.args[0].EvalReal(sctx, rows[lastStart+i])
if err != nil {
return err
}
if isNull {
continue
}
*p--
}
for i := uint64(0); i < shiftEnd; i++ {
_, isNull, err := e.args[0].EvalReal(sctx, rows[lastEnd+i])
if err != nil {
return err
}
if isNull {
continue
}
*p++
}
return nil
}
type countOriginal4Decimal struct {
baseCount
}
func (e *countOriginal4Decimal) UpdatePartialResult(sctx sessionctx.Context, rowsInGroup []chunk.Row, pr PartialResult) error {
p := (*partialResult4Count)(pr)
for _, row := range rowsInGroup {
_, isNull, err := e.args[0].EvalDecimal(sctx, row)
if err != nil {
return err
}
if isNull {
continue
}
*p++
}
return nil
}
func (e *countOriginal4Decimal) Slide(sctx sessionctx.Context, rows []chunk.Row, lastStart, lastEnd uint64, shiftStart, shiftEnd uint64, pr PartialResult) error {
p := (*partialResult4Count)(pr)
for i := uint64(0); i < shiftStart; i++ {
_, isNull, err := e.args[0].EvalDecimal(sctx, rows[lastStart+i])
if err != nil {
return err
}
if isNull {
continue
}
*p--
}
for i := uint64(0); i < shiftEnd; i++ {
_, isNull, err := e.args[0].EvalDecimal(sctx, rows[lastEnd+i])
if err != nil {
return err
}
if isNull {
continue
}
*p++
}
return nil
}
type countOriginal4Time struct {
baseCount
}
func (e *countOriginal4Time) UpdatePartialResult(sctx sessionctx.Context, rowsInGroup []chunk.Row, pr PartialResult) error {
p := (*partialResult4Count)(pr)
for _, row := range rowsInGroup {
_, isNull, err := e.args[0].EvalTime(sctx, row)
if err != nil {
return err
}
if isNull {
continue
}
*p++
}
return nil
}
func (e *countOriginal4Time) Slide(sctx sessionctx.Context, rows []chunk.Row, lastStart, lastEnd uint64, shiftStart, shiftEnd uint64, pr PartialResult) error {
p := (*partialResult4Count)(pr)
for i := uint64(0); i < shiftStart; i++ {
_, isNull, err := e.args[0].EvalTime(sctx, rows[lastStart+i])
if err != nil {
return err
}
if isNull {
continue
}
*p--
}
for i := uint64(0); i < shiftEnd; i++ {
_, isNull, err := e.args[0].EvalTime(sctx, rows[lastEnd+i])
if err != nil {
return err
}
if isNull {
continue
}
*p++
}
return nil
}
type countOriginal4Duration struct {
baseCount
}
func (e *countOriginal4Duration) UpdatePartialResult(sctx sessionctx.Context, rowsInGroup []chunk.Row, pr PartialResult) error {
p := (*partialResult4Count)(pr)
for _, row := range rowsInGroup {
_, isNull, err := e.args[0].EvalDuration(sctx, row)
if err != nil {
return err
}
if isNull {
continue
}
*p++
}
return nil
}
func (e *countOriginal4Duration) Slide(sctx sessionctx.Context, rows []chunk.Row, lastStart, lastEnd uint64, shiftStart, shiftEnd uint64, pr PartialResult) error {
p := (*partialResult4Count)(pr)
for i := uint64(0); i < shiftStart; i++ {
_, isNull, err := e.args[0].EvalDuration(sctx, rows[lastStart+i])
if err != nil {
return err
}
if isNull {
continue
}
*p--
}
for i := uint64(0); i < shiftEnd; i++ {
_, isNull, err := e.args[0].EvalDuration(sctx, rows[lastEnd+i])
if err != nil {
return err
}
if isNull {
continue
}
*p++
}
return nil
}
type countOriginal4JSON struct {
baseCount
}
func (e *countOriginal4JSON) UpdatePartialResult(sctx sessionctx.Context, rowsInGroup []chunk.Row, pr PartialResult) error {
p := (*partialResult4Count)(pr)
for _, row := range rowsInGroup {
_, isNull, err := e.args[0].EvalJSON(sctx, row)
if err != nil {
return err
}
if isNull {
continue
}
*p++
}
return nil
}
func (e *countOriginal4JSON) Slide(sctx sessionctx.Context, rows []chunk.Row, lastStart, lastEnd uint64, shiftStart, shiftEnd uint64, pr PartialResult) error {
p := (*partialResult4Count)(pr)
for i := uint64(0); i < shiftStart; i++ {
_, isNull, err := e.args[0].EvalJSON(sctx, rows[lastStart+i])
if err != nil {
return err
}
if isNull {
continue
}
*p--
}
for i := uint64(0); i < shiftEnd; i++ {
_, isNull, err := e.args[0].EvalJSON(sctx, rows[lastEnd+i])
if err != nil {
return err
}
if isNull {
continue
}
*p++
}
return nil
}
type countOriginal4String struct {
baseCount
}
func (e *countOriginal4String) UpdatePartialResult(sctx sessionctx.Context, rowsInGroup []chunk.Row, pr PartialResult) error {
p := (*partialResult4Count)(pr)
for _, row := range rowsInGroup {
_, isNull, err := e.args[0].EvalString(sctx, row)
if err != nil {
return err
}
if isNull {
continue
}
*p++
}
return nil
}
func (e *countOriginal4String) Slide(sctx sessionctx.Context, rows []chunk.Row, lastStart, lastEnd uint64, shiftStart, shiftEnd uint64, pr PartialResult) error {
p := (*partialResult4Count)(pr)
for i := uint64(0); i < shiftStart; i++ {
_, isNull, err := e.args[0].EvalString(sctx, rows[lastStart+i])
if err != nil {
return err
}
if isNull {
continue
}
*p--
}
for i := uint64(0); i < shiftEnd; i++ {
_, isNull, err := e.args[0].EvalString(sctx, rows[lastEnd+i])
if err != nil {
return err
}
if isNull {
continue
}
*p++
}
return nil
}
type countPartial struct {
baseCount
}
func (e *countPartial) UpdatePartialResult(sctx sessionctx.Context, rowsInGroup []chunk.Row, pr PartialResult) error {
p := (*partialResult4Count)(pr)
for _, row := range rowsInGroup {
input, isNull, err := e.args[0].EvalInt(sctx, row)
if err != nil {
return err
}
if isNull {
continue
}
*p += input
}
return nil
}
func (*countPartial) MergePartialResult(sctx sessionctx.Context, src, dst PartialResult) error {
p1, p2 := (*partialResult4Count)(src), (*partialResult4Count)(dst)
*p2 += *p1
return nil
}