Problemas em executar criteria.list com hibernate [RESOLVIDO]

Boa tarde galera,
Estou com um problema quando vou executar um criteria.list
Na classe DAO do objeto eu adiciono o Criterion

public List<FlexFieldValue> getFlexFieldByInterfaceOperation(Long idInterfaceOp){
		List<Criterion> list = new ArrayList<Criterion>();		
		Criterion idOperation = Restrictions.eq("interfaceOperationId", idInterfaceOp);
		list.add(idOperation);				
		return super.getCriteria(list);	

	}

E na classe DAO Generic ele cria a Query sql e executa o comando. O sql é criado corretamente, pq eu consigo pega-lo e executar no banco sem erros.

private Session getSession(){
    	if (session == null || !session.isConnected()){
    		SessionFactory sessionFactory = new AnnotationConfiguration().configure().buildSessionFactory();
    		session = sessionFactory.openSession();    		
    	}
    	return session;
    }

public List getCriteria(List<Criterion> list){
    	logger.info("Find By Criteria class" + this.persistentClass);    	
    	Criteria criteria = getSession().createCriteria(persistentClass);    	
    	for (Criterion c : list) {
    		criteria.add(c);
    	}    	
    	return criteria.list();
    }

Segue abaixo a Excessao que ta dando.

javax.faces.el.EvaluationException: /ErrosOperacao.xhtml @80,64 action="#{interfaceOperationMB.getFlexFieldRow}": org.hibernate.PropertyAccessException: could not get a field value by reflection getter of br.com.sigga.model.InterfaceOperation.interfaceOperationId
	at com.sun.facelets.el.LegacyMethodBinding.invoke(LegacyMethodBinding.java:73)
	at com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:91)
	at javax.faces.component.UICommand.broadcast(UICommand.java:383)
	at org.ajax4jsf.component.AjaxActionComponent.broadcast(AjaxActionComponent.java:55)
	at org.ajax4jsf.component.UIDataAdaptor.broadcast(UIDataAdaptor.java:1359)
	at org.ajax4jsf.component.AjaxViewRoot.processEvents(AjaxViewRoot.java:317)
	at org.ajax4jsf.component.AjaxViewRoot.broadcastEvents(AjaxViewRoot.java:292)
	at org.ajax4jsf.component.AjaxViewRoot.processPhase(AjaxViewRoot.java:249)
	at org.ajax4jsf.component.AjaxViewRoot.processApplication(AjaxViewRoot.java:462)
	at com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:97)
	at com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:251)
	at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:117)
	at javax.faces.webapp.FacesServlet.service(FacesServlet.java:244)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at br.com.sigga.util.SecurityFilter.doFilter(SecurityFilter.java:41)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at org.ajax4jsf.webapp.BaseXMLFilter.doXmlFilter(BaseXMLFilter.java:154)
	at org.ajax4jsf.webapp.BaseFilter.handleRequest(BaseFilter.java:260)
	at org.ajax4jsf.webapp.BaseFilter.processUploadsAndHandleRequest(BaseFilter.java:366)
	at org.ajax4jsf.webapp.BaseFilter.doFilter(BaseFilter.java:493)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:230)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
	at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:179)
	at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:84)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
	at org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:157)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:262)
	at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
	at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
	at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:446)
	at java.lang.Thread.run(Unknown Source)
Caused by: org.hibernate.PropertyAccessException: could not get a field value by reflection getter of br.com.sigga.model.InterfaceOperation.interfaceOperationId

Segue abaixo o mapeamento das classes referentes.

@ManyToOne(cascade = CascadeType.ALL)
@JoinColumn(name = "WIP_OPERATION_ID", referencedColumnName = "INTERFACE_OPERATION_ID")    
private InterfaceOperation interfaceOperationId;

Eu nao sei oq pode esta acontecendo pq sou novo com Hibernate. Alguem pode me dar uma ajuda?
OBS: no erro fala alguma coisa de getter. Todos os atributos das classes estao com getter and setters criados.

Aguardo retorno.
Obrigado galera

fala…
cara… vc está tentando setando um tipo Long, quando deveria setar um tipo InterfaceOperation.

quando vc faz

tem q passar um tipo InterfaceOperation ou entao utilizar o atributo de InterfaceOperation q é Long.

Booaaa mgarcia…
Obrigado pela dica cara…
Consegui resolver o problema. Sou novo com Hibernate e nao peguei as manhas ainda.
Eu estava passando um Long para comparar com o Objeto interfaceOperation. Na verdade, foi como você disse, é preciso passar um objeto InterfaceOperation para fazer a comparação.
Fica a dica para quem precisar.

Vlw.