basedaohibernatetemplateimpl.java

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package tarena.netctoss.dao.impl;

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

import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import org.springframework.orm.hibernate3.HibernateTemplate;

import tarena.netctoss.dao.IBaseDAO;

public class BaseDAOHibernateTemplateImpl implements IBaseDAO {

	private static HibernateTemplate hibernateTemplate;
	
	static {
		ApplicationContext ac = new ClassPathXmlApplicationContext("applicationContext.xml");
		BaseDAOHibernateTemplateImpl b = (BaseDAOHibernateTemplateImpl) ac.getBean("baseDAO");
		hibernateTemplate = b.getHibernateTemplate();
	}
	
	public void delete(Object o) {
		// TODO Auto-generated method stub
		getHibernateTemplate().delete(o);
	}

	public void deleteAll(Collection c) {
		// TODO Auto-generated method stub
		getHibernateTemplate().deleteAll(c);
	}

	public Serializable insert(Object o) {
		// TODO Auto-generated method stub
		return getHibernateTemplate().save(o);
	}

	public void insertOrUpdate(Object o) {
		// TODO Auto-generated method stub
		getHibernateTemplate().saveOrUpdate(o);
	}

	public Collection selectAll(Class c) {
		// TODO Auto-generated method stub
		
		String hql = "select o from " + c.getName() + " o";
		List cc = getHibernateTemplate().find(hql);
		if(cc.size() == 0){
			return cc;
		}
		return cc;
	}

	public Object selectById(Class c, Serializable id) {
		// TODO Auto-generated method stub
		String hql = "select o from " + c.getName() + " o where o.id=:id";
		List cc = getHibernateTemplate().findByNamedParam(hql, "id", id);
		if(cc.size() == 0){
			return null;
		}
		return cc.get(0);
	}

	public void update(Object o) {
		// TODO Auto-generated method stub
		getHibernateTemplate().update(o);
	}

	public HibernateTemplate getHibernateTemplate() {
		return hibernateTemplate;
	}

	public void setHibernateTemplate(HibernateTemplate hibernateTemplate) {
		this.hibernateTemplate = hibernateTemplate;
	}

}