73.5 Adding the Room Database

The last task before adding the repository to the project is to implement the Room Database instance. Add a new class to the project named ProductRoomDatabase, this time with the Kind menu set to Class.

Once the file has been generated, modify it as follows using the steps outlined in the “The Android Room Persistence Library” chapter:

package com.ebookfrenzy.roomdemo

 

import android.content.Context

import androidx.room.Database

import androidx.room.Room

import androidx.room.RoomDatabase

 

@Database(entities = [(Product::class)], version = 1)

abstract class ProductRoomDatabase: RoomDatabase() {

 

    abstract fun productDao(): ProductDao

 

    companion object {

 

        private var INSTANCE: ProductRoomDatabase? = null

 

        internal...