content: /*
   * Copyright (c) 2020 Adam Gaj
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *     https://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  package com.adgadev.jplusone.test.domain.bookshop;
  
  import lombok.RequiredArgsConstructor;
  import lombok.extern.slf4j.Slf4j;
  import org.springframework.stereotype.Service;
  
  import jakarta.transaction.Transactional;
  
  @Slf4j
  @Service
  @Transactional
  @RequiredArgsConstructor
  class BookshopService {
  
      private final BookRepository bookRepository;
  
      public BookDto getSampleBookDetailsUsingLazyLoading() {
          Book book = bookRepository.findById(1L).get();
          String authorName = book.getAuthor().getName();
          int amountOfBooks = book.getAuthor().countWrittenBooks();
  
          return new BookDto(authorName, book.getTitle(), amountOfBooks);
      }
  
      public BookDto getSampleBookDetailsUsingEagerLoading() {
          Book book = bookRepository.findByIdAndFetchAuthor(1L).get();
          String authorName = book.getAuthor().getName();
          int amountOfBooks = book.getAuthor().countWrittenBooks();
  
          return new BookDto(authorName, book.getTitle(), amountOfBooks);
      }
  
      public void runActionOnSampleAuthorProxy() {
          Book book = bookRepository.findById(1L).get();
          Author author = book.getAuthor();
          log.debug("Running action");
  
          author.runAction(); // should trigger fetch
      }
  
  }
  