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db.go
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db.go
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package analyse
import (
"database/sql"
"fmt"
_ "github.com/mattn/go-sqlite3"
)
type DB struct {
db *sql.DB
}
func NewDB(sqlPath string) (db *DB, err error) {
var sqlite *sql.DB
sqlite, err = sql.Open("sqlite3", sqlPath)
return &DB{
db: sqlite,
}, err
}
func (d *DB) CreateTable() error {
sqlStmt := `
create table if not exists event (
id integer primary key,
target_id integer,
event text,
time integer
)
`
_, err := d.db.Exec(sqlStmt)
return err
}
func (d *DB) InsertEvent(targetID int, event string, time int64) error {
sqlStmt := `
insert into event(target_id, event, time) values(%d, '%s', %d)
`
_, err := d.db.Exec(fmt.Sprintf(sqlStmt, targetID, event, time))
return err
}
func (d *DB) ListAllEvent() (events []*Event, err error) {
sqlStmt := `
select target_id, event, time from event
`
rows, err := d.db.Query(sqlStmt)
if err != nil {
return nil, err
}
defer rows.Close()
for rows.Next() {
var targetID int
var event string
var time int64
rows.Scan(&targetID, &event, &time)
events = append(events, &Event{
TargetID: targetID,
Event: event,
Time: time,
})
}
return events, nil
}
func (d *DB) Close() {
d.db.Close()
}