readingbo.java

在线读书交流平台

package com.olr.BO;

import java.util.List;

import com.olr.beans.Book;
import com.olr.beans.Chapter;
import com.olr.beans.Comment;
import com.olr.beans.User;
import com.olr.dao.BookDAO;
import com.olr.dao.ChapterDAO;
import com.olr.dao.CommentDAO;
import com.olr.dao.UserDAO;
import com.olr.util.Pager;

public  class ReadingBO {
	
	private BookDAO bookDAO;
	private ChapterDAO chapterDAO;
	private CommentDAO commentDAO;
	private UserDAO userDAO;
	
	public  Book getBook(int bookId) {
		this.addClickCount(bookId);
		return this.getBookDAO().getBookById(bookId);
	}
	
	public  Chapter getChapter(int chapterNum,int bookId) {
		return this.getChapterDAO().getChapterByNum(chapterNum, bookId);
	}
	
	public  void addRecommend(int bookId) {
		Book book=this.getBookDAO().getBookById(bookId);
		book.setRecomCount(book.getRecomCount()+1);
		this.getBookDAO().updateBook(book);
	}
	
	public  void addClickCount(int bookId) {
		Book book=this.getBookDAO().getBookById(bookId);
		book.setClickCount(book.getClickCount()+1);
		this.getBookDAO().updateBook(book);
	}
	
	public  List<Comment> getTopComments(int chapterId,int topNum) {
		return this.getCommentDAO().getTopComments(chapterId, topNum);
	}	
	
	public  Pager getCommentPager(int chapterId,int pageNo,int pageSize) {
		return this.getCommentDAO().getCommentsPager(chapterId, pageNo, pageSize);
	}
	
	public  void addComment(Comment comment) {
		User user=this.getUserDAO().getUserByName(comment.getUsername());
		user.setPoint(user.getPoint()+5);
		this.getUserDAO().updateUser(user);
		this.getCommentDAO().insertCommnet(comment);
	}
	
	public  void addToBookshelf(int userId,int bookId) {
		User user=this.getUserDAO().getUserById(userId);
		Book book=this.getBookDAO().getBookById(bookId);
		if(!this.getUserDAO().isExistInShelf(userId, bookId)&&!user.getMyBooks().contains(book)){
			user.getMyBooks().add(book);
			book.getSubscribers().add(user);
			this.getUserDAO().updateUser(user);
			this.getBookDAO().updateBook(book);
		}
		
	}

	public boolean minusPoint(int userId,int price){
		User user=this.getUserDAO().getUserById(userId);
	    if(user.getPoint()<price){
	    	return false;
	    }else{
	    	user.setPoint(user.getPoint()-price);
	    	this.getUserDAO().updateUser(user);
	    	return true;
	    }
	}
	
	public BookDAO getBookDAO() {
		return bookDAO;
	}

	public void setBookDAO(BookDAO bookDAO) {
		this.bookDAO = bookDAO;
	}

	public ChapterDAO getChapterDAO() {
		return chapterDAO;
	}

	public void setChapterDAO(ChapterDAO chapterDAO) {
		this.chapterDAO = chapterDAO;
	}

	public CommentDAO getCommentDAO() {
		return commentDAO;
	}

	public void setCommentDAO(CommentDAO commentDAO) {
		this.commentDAO = commentDAO;
	}

	public UserDAO getUserDAO() {
		return userDAO;
	}

	public void setUserDAO(UserDAO userDAO) {
		this.userDAO = userDAO;
	}
	
	
	
	

}