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Hi to all!
I've a paged listbox with live data and a personalized renderer.
... <listbox id="lista" width="100%" mold="paging" pageSize="40"> <listhead sizable="true"> <listheader label="nPratica"/> <listheader label="Indirizzo"/> <listheader label="First Project Manager Name" /> </listhead> <listitem forEach="${data};" > </listitem> </listbox> <zscript><![CDATA[ ... ListModel data = new SimpleListModel(cerca.getPratiche()); lista.setModel(data); ListitemRenderer myPraticaRenderer = new RendererPraticaRicerca(); lista.setItemRenderer(myPraticaRenderer); ]]></zscript> ...
In my renderer I've managed the eventual null pointer and value, something like the follow:
... public void render(Listitem li, Object data) { Pratica c = (Pratica)data; ... String firstPMname = new String("No PM"); try { if (c.getProjectManager().size()>0) { firstPMname = c.getProjectManager().get(0).getProfessionist().getName().toString(); } } catch (Exception e) { firstPMname = "Problems to load"; } new Listcell(firstPMname).setParent(li); ...
See bellow a little portion of the class Pratica
... public class Pratica implements java.io.Serializable { private Long idPratica; private String nPratica; private Indirizzo indirizzo; private List<ProjectManager> projectManager = new LinkedList<ProjectManager>(); ...
Where is the problem?
Can you help me to solve it?
Thanks in advance, best regards
Hi giordan,
What ZK version are you using?
You can try to remove
<listitem forEach="${data};" > </listitem>
and you can try to remove try catch to see what exception be happened.
Hi as1225!
Thanks for your support.
The version of ZK that I'm using is 5.0.3.
I've tried to follow your suggestion and the result is the following exception:
org.hibernate.LazyInitializationException: failed to lazily initialize a collection of role: ecodata.gestedil.model.Pratica.projectManager, no session or session was closed at org.hibernate.collection.AbstractPersistentCollection.throwLazyInitializationException(AbstractPersistentCollection.java:358) at org.hibernate.collection.AbstractPersistentCollection.throwLazyInitializationExceptionIfNotConnected(AbstractPersistentCollection.java:350) at org.hibernate.collection.AbstractPersistentCollection.readSize(AbstractPersistentCollection.java:97) at org.hibernate.collection.PersistentBag.size(PersistentBag.java:225) at ecodata.gestedil.controller.RendererPraticaRicerca.render(RendererPraticaRicerca.java:38) at org.zkoss.zul.Listbox$Renderer.render(Listbox.java:2699) at org.zkoss.zul.Listbox.onInitRender(Listbox.java:2642) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.lang.reflect.Method.invoke(Unknown Source) at org.zkoss.zk.ui.impl.EventProcessor.process0(EventProcessor.java:208) at org.zkoss.zk.ui.impl.EventProcessor.process(EventProcessor.java:140) at org.zkoss.zk.ui.impl.UiEngineImpl.processEvent(UiEngineImpl.java:1462) at org.zkoss.zk.ui.impl.UiEngineImpl.process(UiEngineImpl.java:1246) at org.zkoss.zk.ui.impl.UiEngineImpl.execUpdate(UiEngineImpl.java:1026) at org.zkoss.zk.au.http.DHtmlUpdateServlet.process(DHtmlUpdateServlet.java:550) at org.zkoss.zk.au.http.DHtmlUpdateServlet.doGet(DHtmlUpdateServlet.java:441) at org.zkoss.zk.au.http.DHtmlUpdateServlet.doPost(DHtmlUpdateServlet.java:449) at javax.servlet.http.HttpServlet.service(HttpServlet.java:637) at javax.servlet.http.HttpServlet.service(HttpServlet.java:717) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:343) at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:109) at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:83) at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:355) at org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:97) at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:355) at org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:100) at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:355) at org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:78) at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:355) at org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:54) at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:355) at org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:35) at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:355) at org.springframework.security.web.authentication.www.BasicAuthenticationFilter.doFilter(BasicAuthenticationFilter.java:177) at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:355) at org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthenticationProcessingFilter.java:188) at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:355) at org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:105) at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:355) at org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:79) at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:355) at org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:149) at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:237) at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:167) 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:233) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298) at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:852) at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:588) at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489) at java.lang.Thread.run(Unknown Source)
How can I fix this?
Thanks, best regards
You can refer to the following link
http://forum.springsource.org/showthread.php?t=64663
Asked: 2010-10-08 07:51:04 +0800
Seen: 305 times
Last updated: Oct 12 '10