categorydaohibernate.java

struts+hibernate+spring的blog,本人也是下载的

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.CategoryDao;
import com.weblog.model.Category;

public class CategoryDaoHibernate extends HibernateDaoSupport implements
		CategoryDao {

	/**
	 * @see com.weblog.dao.CategoryDao#getCategorys(com.weblog.model.Category)
	 */
	public List getCategorys() {
		return getHibernateTemplate().find("from Category");

	}

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

		return category;
	}

	/**
	 * @see com.weblog.dao.CategoryDao#saveCategory(Category category)
	 */
	public void saveCategory(Category category) {
		getHibernateTemplate().saveOrUpdate(category);
	}

	/**
	 * @see com.weblog.dao.CategoryDao#removeCategory(Long id)
	 */
	public void removeCategory(Long id) {
		getHibernateTemplate().delete(getCategory(id));
	}
}