Liferay學習歷程二:搭建二次開發環境(第二部分)

HibernateServiceFactory.java

/***//**
*
*/
packagecn.pisoft.portlet.hibernate.factory;

importcn.pisoft.portlet.hibernate.HibernateService;



/***//**
*<p>Title：</p>
*
*<p>Description:</p>
*
*<p>Copyright:Copyright(c)2007</p>
*
*<p>Company:</p>
*
*<p>Author:一個人的日子</p>
*
*<p>Email:[email protected]</p>
*
*<p>Version:1.0</p>
*
*<p>Create2007-7-29</p>
*
*/

publicclassHibernateServiceFactory...{
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

packagecn.pisoft.portlet.hibernate.util;

importjava.io.Serializable;
importjava.util.List;

importcn.pisoft.portlet.common.Pager;
importcn.pisoft.portlet.hibernate.factory.HibernateServiceFactory;




/***//**
*<p>Title：</p>
*
*<p>Description:</p>
*
*<p>Copyright:Copyright(c)2007</p>
*
*<p>Company:</p>
*
*<p>Author:一個人的日子</p>
*
*<p>Email:[email protected]</p>
*
*<p>Version:1.0</p>
*
*<p>Create2007-7-29</p>
*
*/

publicclassHibernateServiceUtil...{

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);
}
}

上面的類和接口是實現Hibernate數據庫訪問層CURD的封裝,至於他們之間的關係要結合Spring配置文件來看,我封裝的訪問入口類的是HibernateServiceUtil.java這個類,從這裏入手再結合Spring文件就能很清楚地看出這幾個類之間地關係.