关于HQL语句的表链接查询

business的主键是bid,contact的属性bid对应business.bid，现在进行一个查询，输入一个business.bname的值，进行查找，写了如下代码，应该怎么修改啊？
public ActionForward queryContact(ActionMapping mapping,
ActionForm form, HttpServletRequest request,
HttpServletResponse response) {
List list = objectDao.getObjectList("from ContactForm");
if(request.getParameter("bname")!=null){
String bname= request.getParameter("bname");
list = objectDao.getObjectList("from ContactFrom b where b.bid=(select bid from BusinessFrom c where c.bname like '%"+bname+"%')");
request.setAttribute("result1",bname);
}
if(request.getParameter("conname")!=null){
String conname= request.getParameter("conname");
list = objectDao.getObjectList("from ContactForm c where c.conname like '%"+conname+"%'");
request.setAttribute("result2",conname);
}<

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