Question

我有以下Dao课程：

@Dao
public interface AchievementDao {

@Insert(onConflict = OnConflictStrategy.REPLACE)
void insertIntoDatabase(AchievementModel... achievementModel);

@Query("SELECT * FROM achievements WHERE game = :game")
AchievementModel[] getAchievementDataForGame(String game);

@Query("UPDATE achievements SET pointsAchieved = pointsAchieved + :points WHERE achievementKey = :achievementKey")
void updatePointsForKey(double points, String achievementKey);

@Query("SELECT * FROM achievements WHERE achievementKey LIKE :achievementKey")
AchievementModel getAchievementForKey(String achievementKey);
}

和以下模型类：

@Entity(tableName = "achievements", indices = {@Index(value = {"achievementKey"}, unique = true)})
public class AchievementModel {

@PrimaryKey @NonNull
private String achievementKey;
private String title;
private String description;
private double pointsAchieved;
private int imageId;
private int viewType;
private String game;

public AchievementModel(@NonNull String achievementKey, String title, String description,
                        double pointsAchieved, int imageId, int viewType, String game) {
    this.achievementKey = achievementKey;
    this.title = title;
    this.description = description;
    this.pointsAchieved = pointsAchieved;
    this.imageId = imageId;
    this.viewType = viewType;
    this.game = game;
}

@NonNull
public String getAchievementKey() {
    return achievementKey;
}

public void setAchievementKey(@NonNull String achievementKey) {
    this.achievementKey = achievementKey;
}

public String getTitle() {
    return title;
}

public void setTitle(String title) {
    this.title = title;
}

public String getDescription() {
    return description;
}

public void setDescription(String description) {
    this.description = description;
}

public double getPointsAchieved() {
    return pointsAchieved;
}

public void setPointsAchieved(double pointsAchieved) {
    this.pointsAchieved = pointsAchieved;
}

public int getImageId() {
    return imageId;
}

public void setImageId(int imageId) {
    this.imageId = imageId;
}

public int getViewType() {
    return viewType;
}

public void setViewType(int viewType) {
    this.viewType = viewType;
}

public String getGame() {
    return game;
}

public void setGame(String game) {
    this.game = game;
}
}

DAO类中的前2个查询工作正常，而最后2个查询updatePointsForKey和getAchievementForKey不起作用。从后台线程正确调用它们。请帮忙。请告诉我是否需要更多关于这个问题的信息。

Answer 1

更新查询可能返回int而不是void ...你怎么看？

更新查询无效？

1 个答案: