UserDao.java

@android.arch.persistence.room.Dao()
public abstract interface UserDao {

   @android.arch.persistence.room.Insert(onConflict = 1)
    public abstract void save(@org.jetbrains.annotations.NotNull()
    com.the42apps.newarch.User p0);

   @org.jetbrains.annotations.NotNull()
    @android.arch.persistence.room.Query(value = “SELECT * FROM user WHERE id = :userId”)
    public abstract android.arch.lifecycle.LiveData<com.the42apps.newarch.User> load(@org.jetbrains.annotations.NotNull()
    java.lang.String p0);
}

UserDao.kt

@Dao
interface UserDao {
    @Insert(onConflict = REPLACE)
    fun save(user: User)

   @Query(“SELECT * FROM user WHERE id = :userId”)
    fun load(userId: @ParameterName(“userId”) String): LiveData<User>
}