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criteria "could not resolve property"

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marceltoma

Post subject: criteria "could not resolve property"

Posted: Fri Mar 04, 2005 8:14 pm

Beginner

Joined: Fri Apr 16, 2004 10:25 am
Posts: 44
Location: Brazil

How do I associated tables in criteria?

Criteria crit = HibernateUtil.getSession().createCriteria(conteudoVO.class).
add(Expression.eq("arvoreVO.estruturaArvoreVO.vchtipo",strTipo));

Code:

javax.servlet.ServletException: net.sf.hibernate.QueryException: could not resolve property: arvoreVO.estruturaArvoreVO.vchtipo of: com.bzo2.lupo.vo.conteudoVO
   org.apache.struts.action.RequestProcessor.processException(RequestProcessor.java:516)
   org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:423)
   org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:226)
   org.apache.struts.action.ActionServlet.process(ActionServlet.java:1164)
   org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:415)
   javax.servlet.http.HttpServlet.service(HttpServlet.java:709)
   javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
   com.bzo2.lupo.servlets.ValidSessionFilter.doFilter(ValidSessionFilter.java:57)

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kariem

Post subject:

Posted: Sat Mar 05, 2005 3:30 pm

Newbie

Joined: Sat Mar 05, 2005 2:36 pm
Posts: 19

Hi marceltoma

If you have this code:

Code:

Criteria crit = HibernateUtil.getSession().createCriteria(conteudoVO.class).
add(Expression.eq("arvoreVO.estruturaArvoreVO.vchtipo",strTipo));

Hibernate will try to find the attribute arvoreVO.estruturaArvoreVO.vchtipo within the class conteudoVO. It seems like hibernate could not resolve this property. There could just be a minor misspelling. The first parameter to the eq method should be an attribute of the class supplied to criteria.

As I do not know, what 'conteudo' is, am not sure whether 'arvore' (=tree?) could be an attribute. I will give an example in english:

Code:

HibernateUtil.getSession().createCriteria(Tree.class).
add(Expression.eq("leafColor","green"));

This will limit the criteria to the value green for the attribute leafColor of the class Tree.

Hope this could help,
Kariem

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