NPE on sort #369
Description
Hi,
sporadically I find this stack within our production log.
When I sort within the sortable it works, but somehow the sortable item is sometimes null.
Any ideas what could be the reason?
groupId=com.googlecode.wicket-jquery-ui
artifactId=wicket-jquery-ui-core
version=9.18.0
Exception:
java.lang.NullPointerException
at com.googlecode.wicket.jquery.core.utils.ListUtils.move(ListUtils.java:177)
at com.googlecode.wicket.jquery.ui.interaction.sortable.Sortable.onUpdate(Sortable.java:137)
at com.googlecode.wicket.jquery.ui.interaction.sortable.SortableBehavior.onAjax(SortableBehavior.java:180)
at com.googlecode.wicket.jquery.core.ajax.JQueryAjaxBehavior.respond(JQueryAjaxBehavior.java:174)
at org.apache.wicket.ajax.AbstractDefaultAjaxBehavior.onRequest(AbstractDefaultAjaxBehavior.java:630)
at org.apache.wicket.core.request.handler.ListenerRequestHandler.internalInvoke(ListenerRequestHandler.java:300)
at org.apache.wicket.core.request.handler.ListenerRequestHandler.invoke(ListenerRequestHandler.java:274)
at org.apache.wicket.core.request.handler.ListenerRequestHandler.invokeListener(ListenerRequestHandler.java:222)
at org.apache.wicket.core.request.handler.ListenerRequestHandler.respond(ListenerRequestHandler.java:202)
at org.apache.wicket.request.cycle.RequestCycle$HandlerExecutor.respond(RequestCycle.java:910)
at org.apache.wicket.request.RequestHandlerExecutor.execute(RequestHandlerExecutor.java:63)
at org.apache.wicket.request.cycle.RequestCycle.execute(RequestCycle.java:294)
at org.apache.wicket.request.cycle.RequestCycle.processRequest(RequestCycle.java:255)
at org.apache.wicket.protocol.http.WicketFilter.processRequestCycle(WicketFilter.java:277)
at org.apache.wicket.protocol.http.WicketFilter.processRequest(WicketFilter.java:208)
at org.apache.wicket.protocol.http.WicketFilter.doFilter(WicketFilter.java:307)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:253)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:211)
at com.ccc.yap.presentation.frontend.configuration.spring.LoggingFilter.doFilter(LoggingFilter.java:73)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:253)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:211)
at org.apache.shiro.web.servlet.ProxiedFilterChain.doFilter(ProxiedFilterChain.java:65)
at org.apache.shiro.web.servlet.AdviceFilter.executeChain(AdviceFilter.java:109)
at org.apache.shiro.web.servlet.AdviceFilter.doFilterInternal(AdviceFilter.java:138)
at org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:156)
at org.apache.shiro.web.servlet.ProxiedFilterChain.doFilter(ProxiedFilterChain.java:70)
at org.apache.shiro.web.servlet.AdviceFilter.executeChain(AdviceFilter.java:109)
at org.apache.shiro.web.servlet.AdviceFilter.doFilterInternal(AdviceFilter.java:138)
at org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:156)
at org.apache.shiro.web.servlet.ProxiedFilterChain.doFilter(ProxiedFilterChain.java:70)
at org.pac4j.jee.filter.SecurityFilter.lambda$internalFilter$0(SecurityFilter.java:94)
at org.pac4j.core.engine.DefaultSecurityLogic.perform(DefaultSecurityLogic.java:160)
at org.pac4j.jee.filter.SecurityFilter.internalFilter(SecurityFilter.java:92)
at org.pac4j.jee.config.AbstractConfigFilter.doFilter(AbstractConfigFilter.java:72)
at org.apache.shiro.web.servlet.ProxiedFilterChain.doFilter(ProxiedFilterChain.java:70)
at org.apache.shiro.web.servlet.AbstractShiroFilter.executeChain(AbstractShiroFilter.java:463)
at org.apache.shiro.web.servlet.AbstractShiroFilter.lambda$doFilterInternal$0(AbstractShiroFilter.java:378)
at org.apache.shiro.subject.support.SubjectCallable.doCall(SubjectCallable.java:91)
at org.apache.shiro.subject.support.SubjectCallable.call(SubjectCallable.java:84)
at org.apache.shiro.subject.support.DelegatingSubject.execute(DelegatingSubject.java:389)
at org.apache.shiro.web.servlet.AbstractShiroFilter.doFilterInternal(AbstractShiroFilter.java:376)
at org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:156)
at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:354)
at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:267)
at com.ccc.yap.presentation.frontend.configuration.spring.SpringInitializer$1.doFilter(SpringInitializer.java:145)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:253)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:211)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:257)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.jav...