package com.sbm.wll.controller;

import java.util.HashSet;
import java.util.Set;

import javax.servlet.http.HttpServletRequest;

/**
 * 多对一关系映射，保存到数据库
 */
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.cache.annotation.Cacheable;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;

import com.sbm.wll.dao.BookDao;
import com.sbm.wll.dao.ReaderDao;
import com.sbm.wll.entity.Book;
import com.sbm.wll.entity.Reader;
/**
 * 多对一和一对多关系后台添加数据 
 * @author server
 *
 */
@Controller
public class OneToManyController {
	@Autowired
	private ReaderDao readerDaoImpl; //使用JPA的
	@Autowired
	private BookDao bookDaoImpl;//使用JPA

	@RequestMapping("addT")
	// @ResponseBody
	@Cacheable
	public String addTest(HttpServletRequest request) {

		Reader r = new Reader();
		r.setName("LIMING");
		r.setMeno("man");
		Book b1 = new Book();
		b1.setTitle("Java");
		Book b2 = new Book();
		b2.setTitle("C++");
		b1.setReader(r);
		b2.setReader(r);
		Set<Book> bs = new HashSet<Book>();
		bs.add(b1);
		bs.add(b2);
		r.setBooks(bs);
		// r.getBooks().add(b1);  另一种绑定方式
		// r.getBooks().add(b2);另一种绑定方式
		// bookDaoImpl.save(b1);
		// bookDaoImpl.save(b2);
		// readerDaoImpl.save(r);
		// System.out.println("添加完成");
		Book bbBook = bookDaoImpl.findById(1);
		request.setAttribute("b1", bbBook);
		return "book";
	}
	
	
	
	
	
}