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From "Leonardo Uribe (Commented) (JIRA)" <...@myfaces.apache.org>
Subject [jira] [Commented] (MYFACES-3344) selectManyCheckbox State Saving
Date Tue, 04 Oct 2011 19:06:34 GMT

    [ https://issues.apache.org/jira/browse/MYFACES-3344?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13120385#comment-13120385
] 

Leonardo Uribe commented on MYFACES-3344:
-----------------------------------------

I don't think this is a myfaces bug. If the passed instance is not serializable or doesn't
implement StateHolder interface, the code will throw an error. It is not a good idea to check
for a class that is an internal detail. The code in primefaces should be fixed instead. I'll
close this one as invalid. Thanks for report this one.
                
> selectManyCheckbox State Saving 
> --------------------------------
>
>                 Key: MYFACES-3344
>                 URL: https://issues.apache.org/jira/browse/MYFACES-3344
>             Project: MyFaces Core
>          Issue Type: Bug
>          Components: General
>    Affects Versions: 2.1.3
>         Environment: Primefaces 3.0.RC1-SNAPSHOT, WebSphere 8.0
>            Reporter: Keith Wong
>
> Hi,
> I have a problem when using p:selectManyCheckbox, as well as p:selectManyMenu, with MyFaces
2. Here is the page fragment:
> 	<p:inputTextarea value="#{customer.firstName}" required="true"/>
> 	<p:selectManyCheckbox value="#{customer.phones}">
> 		<f:selectItem itemValue="SS" itemLabel="Samsung"/>
> 		<f:selectItem itemValue="LG" itemLabel="LG"/>
> 		<f:selectItem itemValue="AP" itemLabel="Apple"/>
> 	</p:selectManyCheckbox>
> 	<p:commandButton value="Submit" process="@form" update="@form"/>
> Steps to reproduce the problem:
> 1. Let the firstName field empty and click Submit
> 2. Type something in the firstName field and click Submit
> Then, the following exception occurs, amendment to MyFaces is needed to capture the stack
trace,
> [2011/10/4   12:29:01:093 CST] 0000001d UIComponentBa W   类 javax/faces/component/UIComponentBase
非法访问 "private" 类 java/util/Arrays$ArrayList
>                                  java.lang.IllegalAccessException: 类 javax/faces/component/UIComponentBase
非法访问 "private" 类 java/util/Arrays$ArrayList
> 	at java.lang.J9VMInternals.newInstanceImpl(Native Method)
> 	at java.lang.Class.newInstance(Class.java:1345)
> 	at javax.faces.component.UIComponentBase.restoreAttachedState(UIComponentBase.java:1717)
> 	at javax.faces.component._DeltaStateHelper.restoreState(_DeltaStateHelper.java:614)
> 	at javax.faces.component.UIComponentBase.restoreState(UIComponentBase.java:1885)
> 	at javax.faces.component.UIOutput.restoreState(UIOutput.java:213)
> 	at javax.faces.component.UIInput.restoreState(UIInput.java:1012)
> 	at org.apache.myfaces.view.facelets.DefaultFaceletsStateManagementStrategy.restoreStateFromMap(DefaultFaceletsStateManagementStrategy.java:545)
> 	at org.apache.myfaces.view.facelets.DefaultFaceletsStateManagementStrategy.restoreStateFromMap(DefaultFaceletsStateManagementStrategy.java:581)
> 	at org.apache.myfaces.view.facelets.DefaultFaceletsStateManagementStrategy.restoreStateFromMap(DefaultFaceletsStateManagementStrategy.java:564)
> 	at org.apache.myfaces.view.facelets.DefaultFaceletsStateManagementStrategy.restoreStateFromMap(DefaultFaceletsStateManagementStrategy.java:564)
> 	at org.apache.myfaces.view.facelets.DefaultFaceletsStateManagementStrategy.restoreStateFromMap(DefaultFaceletsStateManagementStrategy.java:564)
> 	at org.apache.myfaces.view.facelets.DefaultFaceletsStateManagementStrategy.restoreStateFromMap(DefaultFaceletsStateManagementStrategy.java:564)
> 	at org.apache.myfaces.view.facelets.DefaultFaceletsStateManagementStrategy.restoreStateFromMap(DefaultFaceletsStateManagementStrategy.java:564)
> 	at org.apache.myfaces.view.facelets.DefaultFaceletsStateManagementStrategy.restoreView(DefaultFaceletsStateManagementStrategy.java:241)
> 	at org.apache.myfaces.application.StateManagerImpl.restoreView(StateManagerImpl.java:113)
> 	at org.apache.myfaces.shared.view.ViewDeclarationLanguageBase.restoreView(ViewDeclarationLanguageBase.java:106)
> 	at org.apache.myfaces.view.facelets.FaceletViewDeclarationLanguage.restoreView(FaceletViewDeclarationLanguage.java:1832)
> 	at org.apache.myfaces.application.ViewHandlerImpl.restoreView(ViewHandlerImpl.java:296)
> 	at org.apache.myfaces.lifecycle.RestoreViewExecutor.execute(RestoreViewExecutor.java:123)
> 	at org.apache.myfaces.lifecycle.LifecycleImpl.executePhase(LifecycleImpl.java:171)
> 	at org.apache.myfaces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:118)
> 	at javax.faces.webapp.FacesServlet.service(FacesServlet.java:189)
> 	at com.ibm.ws.webcontainer.servlet.ServletWrapper.service(ServletWrapper.java:1147)
> 	at com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:722)
> 	at com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:449)
> 	at com.ibm.ws.webcontainer.servlet.ServletWrapperImpl.handleRequest(ServletWrapperImpl.java:178)
> 	at com.ibm.ws.webcontainer.filter.WebAppFilterChain.invokeTarget(WebAppFilterChain.java:125)
> 	at com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:77)
> 	at com.ibm.ws.webcontainer.filter.WebAppFilterManager.doFilter(WebAppFilterManager.java:919)
> 	at com.ibm.ws.webcontainer.filter.WebAppFilterManager.invokeFilters(WebAppFilterManager.java:1016)
> 	at com.ibm.ws.webcontainer.servlet.CacheServletWrapper.handleRequest(CacheServletWrapper.java:87)
> 	at com.ibm.ws.webcontainer.WebContainer.handleRequest(WebContainer.java:883)
> 	at com.ibm.ws.webcontainer.WSWebContainer.handleRequest(WSWebContainer.java:1659)
> 	at com.ibm.ws.webcontainer.channel.WCChannelLink.ready(WCChannelLink.java:195)
> 	at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleDiscrimination(HttpInboundLink.java:452)
> 	at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleNewRequest(HttpInboundLink.java:511)
> 	at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.processRequest(HttpInboundLink.java:305)
> 	at com.ibm.ws.http.channel.inbound.impl.HttpICLReadCallback.complete(HttpICLReadCallback.java:83)
> 	at com.ibm.ws.tcp.channel.impl.AioReadCompletionListener.futureCompleted(AioReadCompletionListener.java:165)
> 	at com.ibm.io.async.AbstractAsyncFuture.invokeCallback(AbstractAsyncFuture.java:217)
> 	at com.ibm.io.async.AsyncChannelFuture.fireCompletionActions(AsyncChannelFuture.java:161)
> 	at com.ibm.io.async.AsyncFuture.completed(AsyncFuture.java:138)
> 	at com.ibm.io.async.ResultHandler.complete(ResultHandler.java:204)
> 	at com.ibm.io.async.ResultHandler.runEventProcessingLoop(ResultHandler.java:775)
> 	at com.ibm.io.async.ResultHandler$2.run(ResultHandler.java:905)
> 	at com.ibm.ws.util.ThreadPool$Worker.run(ThreadPool.java:1648)
> After investigation, the cause could be in the saveAttachedState method of UIComponentBase.java:
>         else if (attachedObject instanceof Collection)
>         {
>             if (ArrayList.class.equals(attachedObject.getClass()))
>             {
>                 List<Object> lst = new ArrayList<Object>(((List<?>)
attachedObject).size());
> The above fragment only consider if the attachedObject is an instance of ArrayList. 
However, the object returned from PrimeFaces is created by Arrays.asList, which is java.util.Arrays$ArrayList.
 So, when performing restoreAttachedState, this private class could not be instantiated. 
So, I suggest to change the line
>             if (ArrayList.class.equals(attachedObject.getClass()))
> as this
>             if (ArrayList.class.equals(attachedObject.getClass()) || _ClassUtils.simpleClassForName("java.util.Arrays$ArrayList").equals(attachedObject.getClass()))
> to solve the problem.

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