commentservice.java

模仿当当网基于struts+hierbernate与mysql的商务网站。

package org.whatisjava.dang.service;

import java.util.List;

import org.whatisjava.dang.dao.CommentDao;
import org.whatisjava.dang.dao.CommentReplyDao;
import org.whatisjava.dang.domain.Comment;
import org.whatisjava.dang.domain.CommentReply;
import org.whatisjava.dang.domain.Product;
import org.whatisjava.dang.domain.User;

public class CommentService {
	private CommentDao commentDao=new CommentDao();
	private CommentReplyDao replyDao=new CommentReplyDao();
	public void createComment(Comment comment) {
		commentDao.save(comment);
	}

	public Comment getCommentById(Integer id, boolean withReply) {
		return commentDao.getById(id,withReply);
	}

	public Comment getCommentById(Integer id) {
		return this.getCommentById(id, false);
	}

	public void createReply(CommentReply reply) {
		Comment comment=this.getCommentById(reply.getCommentId(), true);
		comment.getReplies().add(reply);
		commentDao.update(comment	);
	}

	public List<Comment> findCommentByUser(User user, boolean withReply) {
		return commentDao.findByUser(user,withReply);
	}

	public List<CommentReply> findReplyByUser(User user) {
		return replyDao.findByUser(user);
	}

	public List<Comment> findCommentByProduct(Product product, boolean withReply) {
		return commentDao.findByProduct(product,withReply);
	}

}