categorydaohibernate.java

来自「新闻管理系统.采用STRUTS.HIBERNATE.SPRING.包含数据库在内」· Java 代码 · 共 35 行

package org.yeeku.dao.hibernate;

import java.util.List;

import org.springframework.orm.ObjectRetrievalFailureException;
import org.yeeku.dao.CategoryDAO;
import org.yeeku.model.Category;

public class CategoryDAOHibernate extends BaseDAOHibernate implements
		CategoryDAO {

	public Category getCategory(Long id) {
		Category category = (Category) getHibernateTemplate().get(
				Category.class, id);

		if (category == null) {
			throw new ObjectRetrievalFailureException(Category.class, id);
		}

		return category;
	}

	public void saveCategory(Category category) {
		getHibernateTemplate().saveOrUpdate(category);
	}

	public void removeCategory(Long id) {
		// object must be loaded before it can be deleted
		getHibernateTemplate().delete(getCategory(id));
	}

	public List getCategories() {
		return getHibernateTemplate().find("from Category");
	}
}