Liferay学习历程二:搭建二次开发环境(第二部分)

HibernateServiceFactory.java

/***/ /**
*
*/
package cn.pisoft.portlet.hibernate.factory;

import cn.pisoft.portlet.hibernate.HibernateService;



/***/ /**
*<p>Title：</p>
*
*<p>Description:</p>
*
*<p>Copyright:Copyright(c)2007</p>
*
*<p>Company:</p>
*
*<p>Author:一个人的日子</p>
*
*<p>Email:zhjb2000@hotmail.com</p>
*
*<p>Version:1.0</p>
*
*<p>Create2007-7-29</p>
*
*/

public class HibernateServiceFactory ... {
publicstaticHibernateServicegetService()...{
return_getFactory()._service;
}


publicstaticHibernateServicegetTxImpl()...{
if(_txImpl==null)...{
_txImpl=(HibernateService)com.liferay.portal.kernel.bean.BeanLocatorUtil.locate(_TX_IMPL);
}

return_txImpl;
}

publicvoidsetService(HibernateServiceservice)...{
_service=service;
}

privatestaticHibernateServiceFactory_getFactory()...{
if(_factory==null)...{
_factory=(HibernateServiceFactory)com.liferay.portal.kernel.bean.BeanLocatorUtil.locate(_FACTORY);
}

return_factory;
}

privatestaticfinalString_FACTORY=HibernateServiceFactory.class.getName();
privatestaticfinalString_TX_IMPL=HibernateService.class.getName()+".transaction";
privatestaticHibernateServiceFactory_factory;
privatestaticHibernateService_txImpl;
privateHibernateService_service;
}

HibernateServiceUtil.java

package cn.pisoft.portlet.hibernate.util;

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

import cn.pisoft.portlet.common.Pager;
import cn.pisoft.portlet.hibernate.factory.HibernateServiceFactory;




/***/ /**
*<p>Title：</p>
*
*<p>Description:</p>
*
*<p>Copyright:Copyright(c)2007</p>
*
*<p>Company:</p>
*
*<p>Author:一个人的日子</p>
*
*<p>Email:zhjb2000@hotmail.com</p>
*
*<p>Version:1.0</p>
*
*<p>Create2007-7-29</p>
*
*/

public class HibernateServiceUtil ... {

publicstaticvoidsave(Objectpo)throwsException...{
HibernateServiceFactory.getService().save(po);
}

publicstaticListquery(Stringhql)throwsException...{
returnHibernateServiceFactory.getService().query(hql);
}

publicstaticObjectget(Classclas,Serializableid)throwsException...{
returnHibernateServiceFactory.getService().get(clas,id);
}

publicstaticvoidupdate(Objectpo)throwsException...{
HibernateServiceFactory.getService().update(po);
}

publicstaticvoiddelete(Objectpo)throwsException...{
HibernateServiceFactory.getService().delete(po);
}

publicstaticPagerqueryByPage(Stringhql,inttotalElements,intpageNumber,intpageSize)throwsException...{
returnHibernateServiceFactory.getService().queryByPage(hql,totalElements,pageNumber,pageSize);
}

publicstaticPagerqueryByPage(Stringhql,intpageNumber,intpageSize)throwsException...{
returnHibernateServiceFactory.getService().queryByPage(hql,pageNumber,pageSize);
}

publicstaticvoidexecuteSql(Stringsql)throwsException...{
HibernateServiceFactory.getService().executeSql(sql);
}

publicstaticintgetCountByExecuteSql(Stringsql)throwsException...{
returnHibernateServiceFactory.getService().getCountByExecuteSql(sql);
}

publicstaticListgetListByExecuteSql(Stringsql,StringcolumnName)throwsException...{
returnHibernateServiceFactory.getService().getListByExecuteSql(sql,columnName);
}
publicstaticListgetListByExecuteSql(Stringsql,intfetchNubmer)throwsException...{
returnHibernateServiceFactory.getService().getListByExecuteSql(sql,fetchNubmer);
}

publicstaticListgetTopN(Stringhql,intn)throwsException...{
returnHibernateServiceFactory.getService().getTopN(hql,n);
}
}

上面的类和接口是实现Hibernate数据库访问层CURD的封装,至于他们之间的关系要结合Spring配置文件来看,我封装的访问入口类的是HibernateServiceUtil.java这个类,从这里入手再结合Spring文件就能很清楚地看出这几个类之间地关系.