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ZK Version: 6.0.2
Hibernate: 4.1.5
I have a User object that I am editing via a form. The user holds a collection of Granted Authorities (Spring Security). These are stored in hibernate in a OneToMany relationship. My VM provides a Collection of all possible Granted Authorities. So my zul looks like this:
... <groupbox> <caption label="Authorities"></caption> <listbox model="@load(vm.authorities)" selectedItems="@bind(fx.authorities)" multiple="true" checkmark="true" vflex="true" hflex="true"> <template name="model"> <listitem> <listcell label="@load(each.name)"> </listcell> <listcell label="@load(each.description)"> </listcell> </listitem> </template> </listbox> </groupbox> ...
The current authorities for the user are properly selected and displayed - right up to the point where you try and change any of the checkboxes. Then you get this:
Aug 22, 2012 11:42:22 PM org.zkoss.zk.ui.impl.UiEngineImpl handleError:1351 SEVERE: >>org.zkoss.zel.ELException: Cannot convert [] of type class java.util.HashSet to class org.hibernate.collection.internal.PersistentSet >> at org.zkoss.zel.impl.lang.ELSupport.coerceToTypeForSetValue(ELSupport.java:468) >> at org.zkoss.zel.impl.parser.AstValue.setValue(AstValue.java:244) >> at org.zkoss.zel.impl.ValueExpressionImpl.setValue(ValueExpressionImpl.java:256) >> at org.zkoss.xel.zel.ELXelExpression.setValue(ELXelExpression.java:50) >> at org.zkoss.bind.impl.BindEvaluatorXImpl.setValue(BindEvaluatorXImpl.java:50) >> at org.zkoss.bind.impl.SavePropertyBindingImpl.save(SavePropertyBindingImpl.java:128) >> at org.zkoss.bind.impl.PropertyBindingHandler.doSaveBinding(PropertyBindingHandler.java:148) >> at org.zkoss.bind.impl.PropertyBindingHandler.doSaveEvent(PropertyBindingHandler.java:203) >> at org.zkoss.bind.impl.BinderImpl.doSaveEvent(BinderImpl.java:1388) >> at org.zkoss.bind.impl.BinderImpl.access$1300(BinderImpl.java:95) >> at org.zkoss.bind.impl.BinderImpl$CommandEventListener.onEvent0(BinderImpl.java:1128) >> at org.zkoss.bind.impl.BinderImpl$CommandEventListener.onEvent(BinderImpl.java:1101) >> at org.zkoss.zk.ui.AbstractComponent.onEvent(AbstractComponent.java:2736) >> at org.zkoss.zk.ui.AbstractComponent.service(AbstractComponent.java:2707) >> at org.zkoss.zk.ui.AbstractComponent.service(AbstractComponent.java:2648) >> at org.zkoss.zk.ui.impl.EventProcessor.process(EventProcessor.java:136) >> at org.zkoss.zk.ui.impl.UiEngineImpl.processEvent(UiEngineImpl.java:1709) >> at org.zkoss.zk.ui.impl.UiEngineImpl.process(UiEngineImpl.java:1494) >> at org.zkoss.zk.ui.impl.UiEngineImpl.execUpdate(UiEngineImpl.java:1204) >> at org.zkoss.zk.au.http.DHtmlUpdateServlet.process(DHtmlUpdateServlet.java:558) >> at org.zkoss.zk.au.http.DHtmlUpdateServlet.doGet(DHtmlUpdateServlet.java:456) >> at org.zkoss.zk.au.http.DHtmlUpdateServlet.doPost(DHtmlUpdateServlet.java:464) >> at javax.servlet.http.HttpServlet.service(HttpServlet.java:754) >> at javax.servlet.http.HttpServlet.service(HttpServlet.java:847) >> at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:594) >> at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1366) >> at org.tuckey.web.filters.urlrewrite.RuleChain.handleRewrite(RuleChain.java:164) >> at org.tuckey.web.filters.urlrewrite.RuleChain.doRules(RuleChain.java:141) >> at org.tuckey.web.filters.urlrewrite.UrlRewriter.processRequest(UrlRewriter.java:90) >> at org.tuckey.web.filters.urlrewrite.UrlRewriteFilter.doFilter(UrlRewriteFilter.java:417) >> at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1337) >> at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:311) >> at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:116) >> at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:83) >> at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:323) >> at org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:113) >> at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:323) >> at org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:101) >> at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:323) >> at org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:113) >> at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:323) >> at org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:54) >> at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:323) >> at org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:45) >> at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:323) >> at org.springframework.security.web.authentication.www.BasicAuthenticationFilter.doFilter(BasicAuthenticationFilter.java:150) >> at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:323) >> at org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthenticationProcessingFilter.java:182) >> at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:323) >> at org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:105) >> at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:323) >> at org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:87) >> at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:323) >> at org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:173) >> at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:346) >> at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:259) >> at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1337) >> at org.springframework.orm.hibernate4.support.OpenSessionInViewFilter.doFilterInternal(OpenSessionInViewFilter.java:119) >> at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76) >> at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:346) >> at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:259) >> at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1337) >> at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:484) >> at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:119) >> at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:524) >> at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:233) >> at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1065) >> at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:413) >> at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:192) >> at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:999) >> at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:117) >> at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:111) >> at org.eclipse.jetty.server.Server.handle(Server.java:351) >> at org.eclipse.jetty.server.AbstractHttpConnection.handleRequest(AbstractHttpConnection.java:454) >> at org.eclipse.jetty.server.AbstractHttpConnection.content(AbstractHttpConnection.java:900) >> at org.eclipse.jetty.server.AbstractHttpConnection$RequestHandler.content(AbstractHttpConnection.java:954) >> at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:857) >> at org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:235) >> at org.eclipse.jetty.server.AsyncHttpConnection.handle(AsyncHttpConnection.java:77) >> at org.eclipse.jetty.io.nio.SelectChannelEndPoint.handle(SelectChannelEndPoint.java:609) >> at org.eclipse.jetty.io.nio.SelectChannelEndPoint$1.run(SelectChannelEndPoint.java:45) >> at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:599) >> at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:534) >> at java.lang.Thread.run(Unknown Source)
Question is: does selectedItems just not work with Hibernate collection types? Is there a clean workaround? Am I missing something?
Thanks!
I had the same problem, and the best workaround I found is below. It's trying to call the setter for the Collection property and pass in it's own Collection of selected items and is failing to coerce it's Collection to the concreate type. I'd much rather it treated the object as a generic Set and used the methods in Set to add/remove the items, it seems like it'd be safer.
ViewModel
public void selectSkill(SelectEvent<Listitem, Skill> event) {
analyst.getSkills().retainAll(event.getSelectedObjects());
analyst.getSkills().addAll(event.getSelectedObjects());
}
ZUL
<listbox model="@load(vm.allSkills)" selectedItems="@load(analyst.skills)" checkmark="true" multiple="true" id="analystSkillsListBox" onSelect="vm.selectSkill(event)"> .... </listbox>
I had the same kind of issue, while using list box, and on onSelect event I was populating another list (oneToMany relation) through load form. But as soon as I add new Item in main list, I get this error. Solution was to load complete list again after adding new items in list. Like in your case you can load vm.authorities again.
Asked: 2012-08-23 06:48:24 +0800
Seen: 198 times
Last updated: Feb 08 '13
