New storm artist repository, WIP

persistence/storm/storm_repository.go

@@ -0,0 +1,55 @@
+package storm
+
+import (
+	"reflect"
+
+	"github.com/asdine/storm"
+	"github.com/asdine/storm/q"
+)
+
+type stormRepository struct {
+	bucket interface{}
+}
+
+func (r *stormRepository) init(entity interface{}) {
+	r.bucket = entity
+	if err := Db().Init(r.bucket); err != nil {
+		panic(err)
+	}
+	if err := Db().ReIndex(r.bucket); err != nil {
+		panic(err)
+	}
+}
+
+func (r *stormRepository) CountAll() (int64, error) {
+	c, err := Db().Count(r.bucket)
+	return int64(c), err
+}
+
+func (r *stormRepository) Exists(id string) (bool, error) {
+	err := Db().One("ID", id, r.bucket)
+	if err != nil {
+		return false, err
+	}
+	return err != storm.ErrNotFound, nil
+}
+
+func (r *stormRepository) purgeInactive(ids []string) (deleted []string, err error) {
+	query := Db().Select(q.Not(q.In("ID", ids)))
+
+	err = query.Each(r.bucket, func(record interface{}) error {
+		v := reflect.ValueOf(record).Elem()
+		id := v.FieldByName("ID").String()
+		deleted = append(deleted, id)
+		return nil
+	})
+	if err != nil {
+		return nil, err
+	}
+
+	err = query.Delete(r.bucket)
+	if err != nil {
+		return nil, err
+	}
+	return deleted, nil
+}