12.6. 책 기록 서비스 만들기

책 기록을 위한 서비스 클래스를 생성합니다.

src/main/java > com.yse.dev.book.service > BookLogService.java

package com.yse.dev.book.service;  

import org.springframework.stereotype.Service;  

import com.yse.dev.book.dto.BookLogCreateDTO;  
import com.yse.dev.book.dto.BookLogCreateResponseDTO;  
import com.yse.dev.book.entity.Book;  
import com.yse.dev.book.entity.BookLog;  
import com.yse.dev.book.entity.BookLogRepository;  
import com.yse.dev.book.entity.BookRepository;  

@Service  
public class BookLogService {  
    private BookRepository bookRepository;  
    private BookLogRepository bookLogRepository;  

    public BookLogService(BookRepository bookRepository, BookLogRepository bookLogRepository) {  
        this.bookRepository = bookRepository;  
        this.bookLogRepository = bookLogRepository;  
    }  


    public BookLogCreateResponseDTO insert(BookLogCreateDTO bookLogCreateDTO) {  
        Book book = this.bookRepository.findById(bookLogCreateDTO.getBookId()).orElseThrow();  

        BookLog bookLog = BookLog.builder()  
            .book(book)  
            .comment(bookLogCreateDTO.getComment())  
            .page(bookLogCreateDTO.getPage())  
            .build();  

        bookLog = this.bookLogRepository.save(bookLog);  

        return BookLogCreateResponseDTO.BookLogFactory(bookLog);  
    }  
}