hibernate 怎么查询动态的表名

package com.mit.cooperate.core.hibernate;

import junit.framework.TestCase;

import java.net.URL;
import java.util.ArrayList;

import org.apache.commons.beanutils.PropertyUtils;

import org.hibernate.Session;
import org.hibernate.cfg.Configuration;
import org.hibernate.SessionFactory;
import org.hibernate.tool.hbm2ddl.SchemaExport;
import org.hibernate.impl.SessionFactoryImpl;
import org.hibernate.mapping.PersistentClass;
import org.hibernate.Transaction;

import com.mit.cooperate.core.asm.*;
import com.mit.cooperate.core.asm.render.*;

public class HibernateTest extends TestCase {

private Configuration config;
private SessionFactory factory;

public void setUp()
{
URL url = this.getClass().getResource("/com/mit/cooperate/core/hibernate/hibernate.cfg.xml");
config = new Configuration().configure(url);
factory = config.buildSessionFactory();
}

public void testBuild() throws Exception
{
//持久类对象描述
RenderClass rc = new RenderClass();
ArrayList list = new ArrayList();

RenderProperty property = new RenderProperty();
//添加主键
property.setName("oid");
property.setField("oid");
property.setLength(new Integer(15));
property.setPrimary(true);
property.setType(Long.class.getName());
property.setSequence("SEQ_PERSON");

list.add(property);
//添加一个name字段
property = new RenderProperty();
property.setName("name");
property.setType(String.class.getName());
property.setField("name");
property.setLength(new Integer(20));

list.add(property);

rc.setProperties(list);
//类名
rc.setClassName("com.mit.test.Person");
rc.setTableName("person");
//开始生成class
POBuildUtil util = new POBuildUtil();
util.build(rc.getClassName(),"E:\\cpc\\source\\cooperateCore\\com\\mit\\test\\Person.class",list);
//实例化一个person
Object person = Class.forName("com.mit.test.Person").newInstance();//hbmcls.newInstance();

//开始生成hbm.xml
FreemarkerRender render = new FreemarkerRender();
render.render(rc, Templates.TEMPLATE_HIBERNATE3, "E:\\cpc\\source\\cooperateCore\\com\\mit\\test\\person.hbm.xml");
URL url = this.getClass().getResource("/com/mit/test/person.hbm.xml");
config.addURL(url);
//更新hibernate.cfg.xml
HibernateUtil.updateHbmCfg( this.getClass().getResource("/com/mit/cooperate/core/hibernate/hibernate.cfg.xml"), "com/mit/test/person.hbm.xml");

PersistentClass model = config.getClassMapping("com.mit.test.Person");
//sessionFactory哪下子，快接纳person爷爷进去
((SessionFactoryImpl)factory).addPersistentClass(model, config.getMapping());
//生成数据库
SchemaExport export = new SchemaExport(config,((SessionFactoryImpl)factory).getSettings());
export.execute(true, true,false,true);
//测试一下，随便给个名字什么的
PropertyUtils.setProperty(person, "name", "chenzhi");
Session session = factory.openSession();
Transaction tran = session.beginTransaction();
try
{
//保存
session.save(person);
tran.commit();
}
catch (Exception e)
{
e.printStackTrace();
tran.rollback();
}
finally
{
session.close();
}
}

public void tearDown()
{
factory.close();
}

}