Ndtyjky

I have a JSF page with datatable with a global filter and a single selection with a SelectEvent.
the datatable is in a panel that is rendred by a boolean value in the backbean "renderTable = true".

<p:ajax event="rowSelect" update=":opl01"

                                listener="#{backbean.RerenderTable()}" />





public void RerenderTable() {

            this.setrenderTable (false);

    }

And a second panel in wich I detailled the row is rendred by "!renderTable".

that way when I select a row the table desapear I the row details appear in the secend panel.

I have a p:commandLink in the seconde panel "goback" with a actionListener that calls the backbean to go back to the data table.

<p:commandLink actionListener="#{backBean.goBack}"

                                    update=":opl01">    

public void goBack() {

            this.setrenderTable (True);

    }

until then, everything is going very well!
the problem happens when I filter with global filter and I select a row. the panel containing the database desapear and the panel containing the details apear, if I click the link to go back it works, but if I reload the page before and then try to goback by clicking on the link I get an exception :

nov. 10, 2018 11:26:57 PM com.sun.faces.context.AjaxExceptionHandlerImpl handlePartialResponseError

GRAVE: java.lang.IllegalStateException: java.lang.InstantiationException: org.primefaces.model.SelectableDataModelWrapper

    at javax.faces.component.StateHolderSaver.restore(Unknown Source)

    at javax.faces.component.ComponentStateHelper.restoreState(Unknown Source)

    at javax.faces.component.UIComponentBase.restoreState(Unknown Source)

    at javax.faces.component.UIData.restoreState(Unknown Source)

    at org.primefaces.component.api.UIData.restoreState(UIData.java:1293)

    at com.sun.faces.application.view.FaceletPartialStateManagementStrategy$2.visit(Unknown Source)

    at com.sun.faces.component.visit.FullVisitContext.invokeVisitCallback(Unknown Source)

    at org.primefaces.component.api.UIData.visitTree(UIData.java:850)

    at javax.faces.component.UIComponent.visitTree(Unknown Source)

    at javax.faces.component.UIForm.visitTree(Unknown Source)

    at javax.faces.component.UIComponent.visitTree(Unknown Source)

    at javax.faces.component.UIComponent.visitTree(Unknown Source)

    at javax.faces.component.UIComponent.visitTree(Unknown Source)

    at javax.faces.component.UIComponent.visitTree(Unknown Source)

    at com.sun.faces.application.view.FaceletPartialStateManagementStrategy.restoreView(Unknown Source)

    at com.sun.faces.application.StateManagerImpl.restoreView(Unknown Source)

    at com.sun.faces.application.view.ViewHandlingStrategy.restoreView(Unknown Source)

    at com.sun.faces.application.view.FaceletViewHandlingStrategy.restoreView(Unknown Source)

    at com.sun.faces.application.view.MultiViewHandler.restoreView(Unknown Source)

    at com.sun.faces.lifecycle.RestoreViewPhase.execute(Unknown Source)

    at com.sun.faces.lifecycle.Phase.doPhase(Unknown Source)

    at com.sun.faces.lifecycle.RestoreViewPhase.doPhase(Unknown Source)

    at com.sun.faces.lifecycle.LifecycleImpl.execute(Unknown Source)

    at javax.faces.webapp.FacesServlet.service(Unknown Source)

    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:291)

    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)

    at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)

    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)

    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:217)

    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:106)

    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502)

    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:142)

    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)

    at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:616)

    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)

    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:518)

    at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1091)

    at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:673)

    at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1500)

    at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1456)

    at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)

    at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)

    at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)

    at java.lang.Thread.run(Unknown Source)

Caused by: java.lang.InstantiationException: org.primefaces.model.SelectableDataModelWrapper

    at java.lang.Class.newInstance(Unknown Source)

    ... 45 more

Caused by: java.lang.NoSuchMethodException: org.primefaces.model.SelectableDataModelWrapper.<init>()

    at java.lang.Class.getConstructor0(Unknown Source)

    ... 46 more

I think that is because the backbean is session scoped. how can I resolve this exception without changing the bean scop ?