Only update non-nil database fields

pkg/api/resolver_mutation_scene.go

@@ -14,36 +14,36 @@ func (r *mutationResolver) SceneUpdate(ctx context.Context, input models.SceneUp
 	// Populate scene from the input
 	sceneID, _ := strconv.Atoi(input.ID)
 	updatedTime := time.Now()
-	updatedScene := models.Scene{
+	updatedScene := models.ScenePartial{
 		ID:        sceneID,
-		UpdatedAt: models.SQLiteTimestamp{Timestamp: updatedTime},
+		UpdatedAt: &models.SQLiteTimestamp{Timestamp: updatedTime},
 	}
 	if input.Title != nil {
-		updatedScene.Title = sql.NullString{String: *input.Title, Valid: true}
+		updatedScene.Title = &sql.NullString{String: *input.Title, Valid: true}
 	}
 	if input.Details != nil {
-		updatedScene.Details = sql.NullString{String: *input.Details, Valid: true}
+		updatedScene.Details = &sql.NullString{String: *input.Details, Valid: true}
 	}
 	if input.URL != nil {
-		updatedScene.URL = sql.NullString{String: *input.URL, Valid: true}
+		updatedScene.URL = &sql.NullString{String: *input.URL, Valid: true}
 	}
 	if input.Date != nil {
-		updatedScene.Date = models.SQLiteDate{String: *input.Date, Valid: true}
+		updatedScene.Date = &models.SQLiteDate{String: *input.Date, Valid: true}
 	}
 
 	if input.Rating != nil {
-		updatedScene.Rating = sql.NullInt64{Int64: int64(*input.Rating), Valid: true}
+		updatedScene.Rating = &sql.NullInt64{Int64: int64(*input.Rating), Valid: true}
 	} else {
 		// rating must be nullable
-		updatedScene.Rating = sql.NullInt64{Valid: false}
+		updatedScene.Rating = &sql.NullInt64{Valid: false}
 	}
 
 	if input.StudioID != nil {
 		studioID, _ := strconv.ParseInt(*input.StudioID, 10, 64)
-		updatedScene.StudioID = sql.NullInt64{Int64: studioID, Valid: true}
+		updatedScene.StudioID = &sql.NullInt64{Int64: studioID, Valid: true}
 	} else {
 		// studio must be nullable
-		updatedScene.StudioID = sql.NullInt64{Valid: false}
+		updatedScene.StudioID = &sql.NullInt64{Valid: false}
 	}
 
 	// Start the transaction and save the scene marker

pkg/manager/task_scan.go

@@ -107,8 +107,11 @@ func (t *ScanTask) scanScene() {
 			logger.Infof("%s already exists.  Duplicate of %s ", t.FilePath, scene.Path)
 		} else {
 			logger.Infof("%s already exists.  Updating path...", t.FilePath)
-			scene.Path = t.FilePath
+			scenePartial := models.ScenePartial{
-			_, err = qb.Update(*scene, tx)
+				ID:   scene.ID,
+				Path: &t.FilePath,
+			}
+			_, err = qb.Update(scenePartial, tx)
 		}
 	} else {
 		logger.Infof("%s doesn't exist.  Creating new item...", t.FilePath)

pkg/models/model_scene.go

@@ -25,3 +25,25 @@ type Scene struct {
 	CreatedAt  SQLiteTimestamp `db:"created_at" json:"created_at"`
 	UpdatedAt  SQLiteTimestamp `db:"updated_at" json:"updated_at"`
 }
+
+type ScenePartial struct {
+	ID         int             `db:"id" json:"id"`
+	Checksum   *string          `db:"checksum" json:"checksum"`
+	Path       *string          `db:"path" json:"path"`
+	Title      *sql.NullString  `db:"title" json:"title"`
+	Details    *sql.NullString  `db:"details" json:"details"`
+	URL        *sql.NullString  `db:"url" json:"url"`
+	Date       *SQLiteDate      `db:"date" json:"date"`
+	Rating     *sql.NullInt64   `db:"rating" json:"rating"`
+	Size       *sql.NullString  `db:"size" json:"size"`
+	Duration   *sql.NullFloat64 `db:"duration" json:"duration"`
+	VideoCodec *sql.NullString  `db:"video_codec" json:"video_codec"`
+	AudioCodec *sql.NullString  `db:"audio_codec" json:"audio_codec"`
+	Width      *sql.NullInt64   `db:"width" json:"width"`
+	Height     *sql.NullInt64   `db:"height" json:"height"`
+	Framerate  *sql.NullFloat64 `db:"framerate" json:"framerate"`
+	Bitrate    *sql.NullInt64   `db:"bitrate" json:"bitrate"`
+	StudioID   *sql.NullInt64   `db:"studio_id,omitempty" json:"studio_id"`
+	CreatedAt  *SQLiteTimestamp `db:"created_at" json:"created_at"`
+	UpdatedAt  *SQLiteTimestamp `db:"updated_at" json:"updated_at"`
+}

pkg/models/querybuilder_scene.go

@@ -2,10 +2,11 @@ package models
 
 import (
 	"database/sql"
-	"github.com/jmoiron/sqlx"
-	"github.com/stashapp/stash/pkg/database"
 	"strconv"
 	"strings"
+
+	"github.com/jmoiron/sqlx"
+	"github.com/stashapp/stash/pkg/database"
 )
 
 const scenesForPerformerQuery = `
@@ -60,20 +61,17 @@ func (qb *SceneQueryBuilder) Create(newScene Scene, tx *sqlx.Tx) (*Scene, error)
 	return &newScene, nil
 }
 
-func (qb *SceneQueryBuilder) Update(updatedScene Scene, tx *sqlx.Tx) (*Scene, error) {
+func (qb *SceneQueryBuilder) Update(updatedScene ScenePartial, tx *sqlx.Tx) (*Scene, error) {
 	ensureTx(tx)
 	_, err := tx.NamedExec(
-		`UPDATE scenes SET `+SQLGenKeys(updatedScene)+` WHERE scenes.id = :id`,
+		`UPDATE scenes SET `+SQLGenKeysPartial(updatedScene)+` WHERE scenes.id = :id`,
 		updatedScene,
 	)
 	if err != nil {
 		return nil, err
 	}
 
-	if err := tx.Get(&updatedScene, `SELECT * FROM scenes WHERE id = ? LIMIT 1`, updatedScene.ID); err != nil {
+	return qb.Find(updatedScene.ID)
-		return nil, err
-	}
-	return &updatedScene, nil
 }
 
 func (qb *SceneQueryBuilder) Find(id int) (*Scene, error) {

pkg/models/querybuilder_sql.go

@@ -236,6 +236,17 @@ func ensureTx(tx *sqlx.Tx) {
 // of keys for non empty key:values. These keys are formated
 // keyname=:keyname with a comma seperating them
 func SQLGenKeys(i interface{}) string {
+	return sqlGenKeys(i, false)
+}
+
+// support a partial interface. When a partial interface is provided,
+// keys will always be included if the value is not null. The partial
+// interface must therefore consist of pointers
+func SQLGenKeysPartial(i interface{}) string {
+	return sqlGenKeys(i, true)
+}
+
+func sqlGenKeys(i interface{}, partial bool) string {
 	var query []string
 	v := reflect.ValueOf(i)
 	for i := 0; i < v.NumField(); i++ {
@@ -247,42 +258,46 @@ func SQLGenKeys(i interface{}) string {
 		}
 		switch t := v.Field(i).Interface().(type) {
 		case string:
-			if t != "" {
+			if partial || t != "" {
 				query = append(query, fmt.Sprintf("%s=:%s", key, key))
 			}
 		case int:
-			if t != 0 {
+			if partial || t != 0 {
 				query = append(query, fmt.Sprintf("%s=:%s", key, key))
 			}
 		case float64:
-			if t != 0 {
+			if partial || t != 0 {
 				query = append(query, fmt.Sprintf("%s=:%s", key, key))
 			}
 		case SQLiteTimestamp:
-			if !t.Timestamp.IsZero() {
+			if partial || !t.Timestamp.IsZero() {
 				query = append(query, fmt.Sprintf("%s=:%s", key, key))
 			}
 		case SQLiteDate:
-			if t.Valid {
+			if partial || t.Valid {
 				query = append(query, fmt.Sprintf("%s=:%s", key, key))
 			}
 		case sql.NullString:
-			// should be nullable
+			if partial || t.Valid {
 				query = append(query, fmt.Sprintf("%s=:%s", key, key))
+			}
 		case sql.NullBool:
-			// should be nullable
+			if partial || t.Valid {
 				query = append(query, fmt.Sprintf("%s=:%s", key, key))
+			}
 		case sql.NullInt64:
-			// should be nullable
+			if partial || t.Valid {
 				query = append(query, fmt.Sprintf("%s=:%s", key, key))
+			}
 		case sql.NullFloat64:
-			// should be nullable
+			if partial || t.Valid {
 				query = append(query, fmt.Sprintf("%s=:%s", key, key))
+			}
 		default:
 			reflectValue := reflect.ValueOf(t)
 			kind := reflectValue.Kind()
 			isNil := reflectValue.IsNil()
-			if kind != reflect.Ptr && !isNil {
+			if kind != reflect.Ptr || !isNil {
 				query = append(query, fmt.Sprintf("%s=:%s", key, key))
 			}
 		}