/
hireable.go
83 lines (67 loc) · 1.6 KB
/
hireable.go
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// Copyright 2014-2015 The DevMine authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package features
import (
"database/sql"
"errors"
"github.com/DevMine/featscomp/util"
)
type hireable struct {
name string
db *sql.DB
}
var _ Feature = (*hireable)(nil)
// NewHireable creates a new hireable feature.
func NewHireable(name string, db *sql.DB) (*hireable, error) {
if name == "" {
return nil, errors.New("hireable: name cannot be empty")
}
if db == nil {
return nil, errors.New("hireable: db cannot be nil")
}
return &hireable{name: name, db: db}, nil
}
// Score computes the scores of the hireable feature.
func (h hireable) Score() error {
if err := deleteOldScores(h.db, h.name); err != nil {
return err
}
rows, err := h.db.Query(
`SELECT u.id, ghu.hireable
FROM users AS u
LEFT JOIN gh_users AS ghu ON u.id=ghu.user_id`)
if err != nil {
return err
}
defer rows.Close()
featID, err := util.FindFeatureID(h.db, h.name)
if err != nil {
return err
}
for rows.Next() {
var userID int64
var hireable *bool
if err := rows.Scan(&userID, &hireable); err != nil {
return err
}
var hire float64
if hireable != nil && *hireable {
hire = 1.0
}
if _, err = h.db.Exec(
`INSERT INTO scores(user_id, feature_id, score)
VALUES($1, $2, $3)`,
userID, featID, hire); err != nil {
return err
}
}
if err := rows.Err(); err != nil {
return err
}
return nil
}
// Name returns the name of the feature.
func (h hireable) Name() string {
return h.name
}