authordaohibernate.java

来自「个人blog struts_spring_hibernate」· Java 代码 · 共 49 行

package com.weblog.dao.hibernate;

import java.util.List;

import org.springframework.orm.ObjectRetrievalFailureException;
import org.springframework.orm.hibernate3.support.HibernateDaoSupport;

import com.weblog.dao.AuthorDao;
import com.weblog.model.Author;

public class AuthorDaoHibernate extends HibernateDaoSupport implements
		AuthorDao {

	/**
	 * @see com.weblog.dao.AuthorDao#getAuthors(com.weblog.model.Author)
	 */
	public List getAuthors() {
		return getHibernateTemplate().find("from Author");

	}

	/**
	 * @see com.weblog.dao.AuthorDao#getAuthor(Long id)
	 */
	public Author getAuthor(Long id) {
		Author author = (Author) getHibernateTemplate().get(Author.class, id);
		if (author == null) {
			logger.warn("uh oh, author with id '" + id + "' not found...");
			throw new ObjectRetrievalFailureException(Author.class, id);
		}

		return author;
	}

	/**
	 * @see com.weblog.dao.AuthorDao#saveAuthor(Author author)
	 */
	public void saveAuthor(Author author) {
		getHibernateTemplate().saveOrUpdate(author);
	}

	/**
	 * @see com.weblog.dao.AuthorDao#removeAuthor(Long id)
	 */
	public void removeAuthor(Long id) {
		getHibernateTemplate().delete(getAuthor(id));
	}
}