Now we must set up another class, which will be used to control the queries performed on the database. Add a new file called ISQLiteStorage.cs into the Storage folder and implement the following:
public interface ISQLiteStorage
{
void CreateSQLiteAsyncConnection();
Task CreateTable<T>(CancellationToken token) where T : class, IStorable, new();
Task InsertObject<T>(T item, CancellationToken token) where T : class, IStorable, new();
Task<IList<T>> GetTable<T>(CancellationToken token) where T : class, IStorable, new();
Task<T> GetObject<T>(string key, CancellationToken token) where T : class, IStorable, new();
Task ClearTable<T>(CancellationToken token) where T : class, IStorable, new();
Task DeleteObjectByKey<T>(string key, CancellationToken token) where T : class, IStorable, new();
void CloseConnection();
}The preceding...