hibernamte中基础持久化类BaseDao及实现BaseDaoImpl

最新推荐文章于 2020-06-03 10:05:02 发布

原创最新推荐文章于 2020-06-03 10:05:02 发布 · 106 阅读

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#SSH #Java #Hibernate #DAO #ORM

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本文介绍了一个SSH（Spring + Struts + Hibernate）项目中的DAO层设计及其实现类，包括基本的增删改查功能，并提供了具体的代码示例。


package com.ssh.neb.dao;


import java.io.Serializable;
import java.util.Collection;
import java.util.List;


public interface BaseDao {

	public Object find(String queryString,Object[] values);

	public List findList(String queryString, Object[] values);

    public List getAllObject(Class clazz);

    public Object getObject(Class clazz, Serializable id);

    public void saveObject(Object o);

    public void removeObject(Class clazz, Serializable id);

    public void removeObject(Object o);

    public void removeAllObject(Collection collection);

    public Object findBy(Class clazz , String name, Object value);


    public List findLike(Class clazz, String name, String value);

    public List findAllBy(Class clazz , String name, Object value);

    public void flush();

}

以下是实现类，我感觉还行基本的增删改查都有，拿出来分享下：


package com.ssh.neb.daoImpl;

import java.io.Serializable;
import java.util.Collection;
import java.util.List;


import org.hibernate.Criteria;

import org.hibernate.criterion.Restrictions;
import org.springframework.orm.hibernate3.support.HibernateDaoSupport;
import com.ssh.neb.dao.BaseDao;


public class BaseDaoImpl extends HibernateDaoSupport implements BaseDao {

	public List findAllBy(Class clazz, String name, Object value) {
		Criteria cr = getSession().createCriteria(clazz);
		cr.add(Restrictions.in(name, new Object[]{value}));
		List list = cr.list(); 
		return list;
	}

	public Object findBy(Class clazz, String name, Object value) {
		Criteria cr = getSession().createCriteria(clazz);
		cr.add(Restrictions.in(name, new Object[]{value}));
		return cr.list().get(0);
	}

	public List findLike(Class clazz, String name, String value) {
		Criteria cr = getSession().createCriteria(clazz);
		cr.add(Restrictions.like(name, "%"+value+"%"));
		return cr.list();
	}

	public void flush() {
		getHibernateTemplate().flush();
	}

	public List getAllObject(Class clazz) {

		return this.getHibernateTemplate().loadAll(clazz);

		//return getHibernateTemplate().loadAll(clazz);

	}

	public Object getObject(Class clazz, Serializable id) {
		return getHibernateTemplate().load(clazz, id);
	}
	public void removeAllObject(Collection collection) {
		getHibernateTemplate().deleteAll(collection);
	}

	public void removeObject(Class clazz, Serializable id) {
		Object object = this.getHibernateTemplate().load(clazz, id);
		getHibernateTemplate().delete(object);
	}

	public void removeObject(Object o) {
		getHibernateTemplate().delete(o);
	}

	public void saveObject(Object o) {
		getHibernateTemplate().saveOrUpdate(o);
	}

	public Object find(String queryString, Object[] values) {
		Object object = null;
		List list = getHibernateTemplate().find(queryString, values);
		if(list.size()>0)
			object = list.get(0);
			return object;
	}

	public List findList(String queryString, Object[] values) {
		return getHibernateTemplate().find(queryString, values);
	}



}