AsyncTask Room Database İşlemleri

SQlite Room Database üzerinde çalışıyorum veritabanı işlemlerini AsyncTask ile nasıl yapabilirim ya da dahankolay bir yolla. Önemli olan atkaplanda çalışması.

AppDatabase.java

package com.atesandroid.sqlitedeneme;

import android.content.Context;

import androidx.annotation.NonNull;
import androidx.room.Database;
import androidx.room.Room;
import androidx.room.RoomDatabase;

@Database(entities = {User.class,Veresiye.class}, version =4)
public abstract class AppDatabase extends RoomDatabase {
    private static AppDatabase INSTANCE;
    public abstract UserDao userDao();
    public abstract VeresiyeDao veresiyeDao();
    public static AppDatabase getAppDatabase(Context context){
        if (INSTANCE == null){
            INSTANCE = Room.databaseBuilder(context.getApplicationContext(),AppDatabase.class,"musteri-database")
                    .allowMainThreadQueries()
                    .build();
        }
        return INSTANCE;
    }

    public static void destroyInstance(){
        INSTANCE = null;
    }
}

UserDao:

package com.atesandroid.sqlitedeneme;

import androidx.room.Dao;
import androidx.room.Delete;
import androidx.room.Insert;
import androidx.room.Query;
import androidx.room.Update;

import java.util.List;

@Dao
public interface UserDao {

    @Query("SELECT * FROM user where first_name LIKE :firstName AND last_name LIKE :lastName")
    User findByFullName(String firstName,String lastName);

    @Query("SELECT * FROM user where first_name LIKE  :firstName")
    List<User> findByFirstName(String firstName);

    @Query("SELECT * FROM user WHERE first_name LIKE :lastName")
    User findByLastName(String lastName);

    @Query("SELECT * FROM user")
    List<User> allUsers();

    @Query("SELECT COUNT(*) from user")
    int countUsers();

    @Insert
    void insertUsers(User... users);

    @Insert
    void insertUser(User user);

    @Insert
    void insertUserList(List<User> users);

    @Delete
    void delete(User user);

    @Update
    void update(User user);


}