Hi,
Is it possible that there is some issue with simultaneous access to a
page by different threads using wicket-atmosphere integration? From
time to time, when system send many server events to page, such error
can occurs - in onConfigure method I call setVisible on some children
components:
org.apache.wicket.WicketRuntimeException: Cannot modify component
hierarchy after render phase has started (page version cant change
then anymore)
at org.apache.wicket.Component.checkHierarchyChange(Component.java:3557)
at org.apache.wicket.Component.addStateChange(Component.java:3486)
at org.apache.wicket.Component.setVisible(Component.java:3173)
at myapp.MyPanel.onConfigure(MyPanel.java:83)
at org.apache.wicket.Component.configure(Component.java:1041)
at org.apache.wicket.Component.internalBeforeRender(Component.java:926)
at org.apache.wicket.Component.beforeRender(Component.java:1003)
at org.apache.wicket.Component.internalPrepareForRender(Component.java:2179)
at org.apache.wicket.Component.render(Component.java:2268)
at
org.apache.wicket.ajax.XmlAjaxResponse.writeComponent(XmlAjaxResponse.java:128)
at
org.apache.wicket.ajax.AbstractAjaxResponse.writeComponents(AbstractAjaxResponse.java:218)
at
org.apache.wicket.ajax.AbstractAjaxResponse.writeTo(AbstractAjaxResponse.java:150)
at
org.apache.wicket.ajax.AjaxRequestHandler.respond(AjaxRequestHandler.java:359)
at
org.apache.wicket.request.cycle.RequestCycle$HandlerExecutor.respond(RequestCycle.java:862)
at
org.apache.wicket.request.RequestHandlerStack.execute(RequestHandlerStack.java:64)
at
org.apache.wicket.request.RequestHandlerStack.execute(RequestHandlerStack.java:97)
at
org.apache.wicket.request.cycle.RequestCycle.execute(RequestCycle.java:261)
at
org.apache.wicket.request.cycle.RequestCycle.processRequest(RequestCycle.java:218)
at
org.apache.wicket.request.cycle.RequestCycle.processRequestAndDetach(RequestCycle.java:289)
at org.apache.wicket.atmosphere.EventBus.post(EventBus.java:417)
at
org.apache.wicket.atmosphere.EventBus.postToSingleResource(EventBus.java:393)
at org.apache.wicket.atmosphere.EventBus.post(EventBus.java:346)
at org.apache.wicket.atmosphere.EventBus.post(EventBus.java:329)
So it looks that some thread earlier mark this component as rendering?
--
Daniel
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