com.letusgo.daoImp.DaoImpl.java Source code

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Here is the source code for com.letusgo.daoImp.DaoImpl.java

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package com.letusgo.daoImp;

import com.letusgo.HibernateUtil.HibernateUtil;
import com.letusgo.dao.IDao;
import java.util.Collection;
import java.util.List;
import java.util.Map;
import java.util.Set;
import org.hibernate.Query;
import org.hibernate.Session;
import org.hibernate.SessionFactory;

/**
 *
 * 
 * @author ?
 * @param <T>
 */
public class DaoImpl<T> implements IDao<T> {
    private SessionFactory sessionFactory;

    @Override
    public T find(Class<T> clazz, int id) {
        return (T) getSession().get(clazz, id);
    }

    @Override
    public void create(T t) {
        getSession().persist(t);
    }

    @Override
    public void save(T t) {
        getSession().saveOrUpdate(t);
    }

    @Override
    public void delete(T t) {
        getSession().delete(t);
    }

    @Override
    public List<T> list(String hql, int firstResult, int maxResults, Map<String, Object> map) {
        Query query = getQuery(hql, map);
        List<T> list = query.setFirstResult(firstResult).setMaxResults(maxResults).list();
        System.out.println(":" + firstResult);
        System.out.println(":" + maxResults);
        System.out.println(":" + list.size());

        return list;
    }

    @Override
    public Query getQuery(String hql, Map<String, Object> map) {
        Query query = getSession().createQuery(hql);
        // TODO Auto-generated method stub
        if (map != null) {
            Set<String> keySet = map.keySet();
            for (String string : keySet) {
                Object obj = map.get(string);
                //?????  
                if (obj instanceof Collection<?>) {
                    query.setParameterList(string, (Collection<?>) obj);
                } else if (obj instanceof Object[]) {
                    query.setParameterList(string, (Object[]) obj);
                } else {
                    query.setParameter(string, obj);
                }
            }
        }
        return query;
    }

    @Override
    public List<T> list(String hql, Map<String, Object> map) {
        Query query = getQuery(hql, map);
        List<T> list = query.list();
        return list;
    }

    @Override
    public int getTotalCount(String hql, Map<String, Object> map) {
        Query query = getQuery(hql, map);
        System.out.println("hql" + hql);
        Object obj = query.uniqueResult();
        return ((Long) obj).intValue();
    }

    public Session getSession() {
        return HibernateUtil.getSessionFactory().getCurrentSession();
    }

    public SessionFactory getSessionFactory() {
        return sessionFactory;
    }

    public void setSessionFactory(SessionFactory sessionFactory) {
        this.sessionFactory = sessionFactory;
    }

}