content: package com.bookstore;
  
  import com.bookstore.service.BookstoreService;
  
  import org.springframework.boot.ApplicationRunner;
  import org.springframework.boot.SpringApplication;
  import org.springframework.boot.autoconfigure.SpringBootApplication;
  import org.springframework.context.annotation.Bean;
  
  @SpringBootApplication
  public class MainApplication {
      private final BookstoreService bookstoreService;
  
      public MainApplication(BookstoreService bookstoreService) {
          this.bookstoreService = bookstoreService;
      }
  
      public static void main(String[] args) {
          SpringApplication.run(MainApplication.class, args);
      }
  
      @Bean
      public ApplicationRunner init() {
          return args -> {
              System.out.println("\n\n Calling fetchAuthorByNameAsEntityJpql():");
              bookstoreService.fetchAuthorByNameAsEntityJpql();
  
              System.out.println("\n\n Calling fetchAuthorByNameAsDtoNameEmailJpql():");
              bookstoreService.fetchAuthorByNameAsDtoNameEmailJpql();
  
              System.out.println("\n\n Calling fetchAuthorByNameAsDtoGenreJpql():");
              bookstoreService.fetchAuthorByNameAsDtoGenreJpql();
  
              System.out.println("\n\n Calling fetchAuthorByNameAndAgeAsEntityJpql():");
              bookstoreService.fetchAuthorByNameAndAgeAsEntityJpql();
  
              System.out.println("\n\n Calling fetchAuthorByNameAndAgeAsDtoNameEmailJpql():");
              bookstoreService.fetchAuthorByNameAndAgeAsDtoNameEmailJpql();
  
              System.out.println("\n\n Calling fetchAuthorByNameAndAgeAsDtoGenreJpql():");
              bookstoreService.fetchAuthorByNameAndAgeAsDtoGenreJpql();
  
              System.out.println("\n\n Calling fetchAuthorsAsEntitiesJpql():");
              bookstoreService.fetchAuthorsAsEntitiesJpql();
  
              System.out.println("\n\n Calling fetchAuthorsAsDtoJpql():");
              bookstoreService.fetchAuthorsAsDtoJpql();
          };
      }
  }