package aggregate

import (
	"github.com/pingcap-inc/clinic/pkg/ngm/statements/api"
	"github.com/pingcap-inc/clinic/pkg/ngm/statements/load"
)

func AggExecCount() Aggregator {
	return &ExecCount{}
}

type ExecCount struct {
	sum int64
}

var _ Aggregator = (*ExecCount)(nil)

func (a *ExecCount) Add(record *load.StmtRecord) {
	a.sum += record.ExecCount
}

func (a *ExecCount) Merge(agg Aggregator) {
	if agg, ok := agg.(*ExecCount); ok {
		a.sum += agg.sum
	}
}

func (a *ExecCount) Output(model *api.Model) {
	model.ExecCount = int(a.sum)
}