newsdao.java

一个oa系统

package com.oa.companyculture.db;

import java.util.List;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.hibernate.Criteria;
import org.hibernate.Hibernate;
import org.hibernate.LockMode;
import org.hibernate.Query;
import org.hibernate.criterion.Expression;
import org.hibernate.criterion.Projections;
import org.springframework.context.ApplicationContext;
import org.springframework.orm.hibernate3.support.HibernateDaoSupport;

import com.oa.page.PageBean;

/**
 * Data access object (DAO) for domain model class News.
 * 
 * @see com.oa.companyculture.db.News
 * @author MyEclipse - Hibernate Tools
 */
public class NewsDAO extends HibernateDaoSupport {

	private static final Log log = LogFactory.getLog(NewsDAO.class);

	protected void initDao() {
		// do nothing
	}

	public void save(News transientInstance) {
		log.debug("saving News instance");
		try {
			getHibernateTemplate().save(transientInstance);
			log.debug("save successful");
		} catch (RuntimeException re) {
			log.error("save failed", re);
			throw re;
		}
	}

	public int getTotalCount() {
		try {
			int intc = 0;
			List results = getHibernateTemplate().find(
					"select count(*) from News");
			intc = (Integer) (results.iterator().next());
			log.debug("find by example successful, result size: "
					+ results.size());
			return intc;
		} catch (RuntimeException re) {
			log.error("find by example failed", re);
			throw re;
		}
	}

	public List findNews(PageBean pager) {
		log.debug("finding all News instance");
		try {
			String sql = "from News order by date desc";
			Query query = getHibernateTemplate().getSessionFactory()
					.openSession().createQuery(sql);
			int currentPage = pager.getCurrentPage();
			int pageSize = pager.getPageSize();
			query.setFirstResult(((currentPage - 1) * pageSize));
			query.setMaxResults(pageSize);
			List results = query.list();
			log.debug("find by example successful, result size: "
					+ results.size());
			return results;
		} catch (RuntimeException re) {
			log.error("find by example failed", re);
			throw re;
		}
	}
	
	public int getSearchTotalCount(String title, String sort, String date1, String date2) {
		try {
			int intc = 0;
			Criteria dcri = getHibernateTemplate().getSessionFactory().openSession().createCriteria(News.class);
			
			if(title!=null && !title.equalsIgnoreCase("")){
				dcri.add(Expression.like("title", "%" + title + "%"));
			}
			if(sort!=null && !sort.equalsIgnoreCase("")){
				dcri.add(Expression.eq("sort", sort));
			}
			if(date1!=null && !date1.equalsIgnoreCase("")){
				dcri.add(Expression.sql("date(date)>=?", date1, Hibernate.STRING));
			}
			if(date2!=null && !date2.equalsIgnoreCase("")){
				dcri.add(Expression.sql("date(date)<=?", date2, Hibernate.STRING));
			}
			
			intc = (Integer)dcri.setProjection(Projections.rowCount()).uniqueResult(); 
			
			return intc;
		} catch (RuntimeException re) {
			log.error("find by example failed", re);
			throw re;
		}
	}

	public List SearchByProperty(String title, String sort, String date1, String date2, PageBean pager) {
		try {
			Criteria dcri = getHibernateTemplate().getSessionFactory().openSession().createCriteria(News.class);
			
			if(title!=null && !title.equalsIgnoreCase("")){
				dcri.add(Expression.like("title", "%" + title + "%"));
			}
			if(sort!=null && !sort.equalsIgnoreCase("")){
				dcri.add(Expression.eq("sort", sort));
			}
			if(date1!=null && !date1.equalsIgnoreCase("")){
				dcri.add(Expression.sql("date(date)>=?", date1, Hibernate.STRING));
			}
			if(date2!=null && !date2.equalsIgnoreCase("")){
				dcri.add(Expression.sql("date(date)<=?", date2, Hibernate.STRING));
			}
			int currentPage = pager.getCurrentPage();
			int pageSize = pager.getPageSize();
			dcri.setFirstResult(((currentPage - 1) * pageSize));
			dcri.setMaxResults(pageSize);
			return dcri.list();
		} catch (RuntimeException re) {
			log.error("find by property name failed", re);
			throw re;
		}
	}

	public void delete(News persistentInstance) {
		log.debug("deleting News instance");
		try {
			getHibernateTemplate().delete(persistentInstance);
			log.debug("delete successful");
		} catch (RuntimeException re) {
			log.error("delete failed", re);
			throw re;
		}
	}

	public News findById(java.lang.Integer id) {
		log.debug("getting News instance with id: " + id);
		try {
			News instance = (News) getHibernateTemplate().get(
					"com.oa.companyculture.db.News", id);
			return instance;
		} catch (RuntimeException re) {
			log.error("get failed", re);
			throw re;
		}
	}

	public List findByExample(News instance) {
		log.debug("finding News instance by example");
		try {
			List results = getHibernateTemplate().findByExample(instance);
			log.debug("find by example successful, result size: "
					+ results.size());
			return results;
		} catch (RuntimeException re) {
			log.error("find by example failed", re);
			throw re;
		}
	}

	public List findByProperty(String propertyName, Object value) {
		log.debug("finding News instance with property: " + propertyName
				+ ", value: " + value);
		try {
			String queryString = "from News as model where model."
					+ propertyName + "= ?";
			return getHibernateTemplate().find(queryString, value);
		} catch (RuntimeException re) {
			log.error("find by property name failed", re);
			throw re;
		}
	}

	public News merge(News detachedInstance) {
		log.debug("merging News instance");
		try {
			News result = (News) getHibernateTemplate().merge(detachedInstance);
			log.debug("merge successful");
			return result;
		} catch (RuntimeException re) {
			log.error("merge failed", re);
			throw re;
		}
	}

	public void attachDirty(News instance) {
		log.debug("attaching dirty News instance");
		try {
			getHibernateTemplate().saveOrUpdate(instance);
			log.debug("attach successful");
		} catch (RuntimeException re) {
			log.error("attach failed", re);
			throw re;
		}
	}

	public void attachClean(News instance) {
		log.debug("attaching clean News instance");
		try {
			getHibernateTemplate().lock(instance, LockMode.NONE);
			log.debug("attach successful");
		} catch (RuntimeException re) {
			log.error("attach failed", re);
			throw re;
		}
	}

	public static NewsDAO getFromApplicationContext(ApplicationContext ctx) {
		return (NewsDAO) ctx.getBean("NewsDAO");
	}
}