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Deprecated RequestContext not working in Primefaces 6.2 - SNAPSHOT

https://forum.primefaces.org/viewtopic.php?f=3&t=53129

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Deprecated RequestContext not working in Primefaces 6.2 - SNAPSHOT

Posted: 09 Nov 2017, 09:32
by stefan.sibitz
When i am using the RequestContext in Primefaces 6.2-SNAPSHOT is say's that this is now deprecated:

This is working without any problems:

Code: Select all

RequestContext context = RequestContext.getCurrentInstance();
context.update("masterDetail");
but now when i am using it like described in the @deprecated comment i only got an exception by now:

Code: Select all

PrimeFaces.current().ajax().update("masterDetail");
The error i got
Root message: ajax() can only be used in AJAX requests!
Root class: class javax.faces.FacesException
Ajax Exception? false

The stacktrace i got:
javax.faces.FacesException: WELD-000049: Unable to invoke public void com.skf.gui.controllers.calc.CalculationController.Init()@4578ab34
at com.sun.faces.lifecycle.ProcessValidationsPhase.execute(ProcessValidationsPhase.java:84)
at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101)
at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:198)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:658)
at io.undertow.servlet.handlers.ServletHandler.handleRequest(ServletHandler.java:85)
at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:129)
at com.skf.filters.DoCacheFilter.doFilter(DoCacheFilter.java:50)</span>
at io.undertow.servlet.core.ManagedFilter.doFilter(ManagedFilter.java:61)
at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:131)
at com.skf.filters.CompressResponseFilter.doFilter(CompressResponseFilter.java:70)</span>
at io.undertow.servlet.core.ManagedFilter.doFilter(ManagedFilter.java:61)
at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:131)
at com.skf.filters.AuthorizationFilter.doFilter(AuthorizationFilter.java:89)</span>
at io.undertow.servlet.core.ManagedFilter.doFilter(ManagedFilter.java:61)
at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:131)
at io.undertow.servlet.handlers.FilterHandler.handleRequest(FilterHandler.java:84)
at io.undertow.servlet.handlers.security.ServletSecurityRoleHandler.handleRequest(ServletSecurityRoleHandler.java:62)
at io.undertow.servlet.handlers.ServletDispatchingHandler.handleRequest(ServletDispatchingHandler.java:36)
at org.wildfly.extension.undertow.security.SecurityContextAssociationHandler.handleRequest(SecurityContextAssociationHandler.java:78)
at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
at io.undertow.servlet.handlers.security.SSLInformationAssociationHandler.handleRequest(SSLInformationAssociationHandler.java:131)
at io.undertow.servlet.handlers.security.ServletAuthenticationCallHandler.handleRequest(ServletAuthenticationCallHandler.java:57)
at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
at io.undertow.security.handlers.AuthenticationConstraintHandler.handleRequest(AuthenticationConstraintHandler.java:53)
at io.undertow.security.handlers.AbstractConfidentialityHandler.handleRequest(AbstractConfidentialityHandler.java:46)
at io.undertow.servlet.handlers.security.ServletConfidentialityConstraintHandler.handleRequest(ServletConfidentialityConstraintHandler.java:64)
at io.undertow.servlet.handlers.security.ServletSecurityConstraintHandler.handleRequest(ServletSecurityConstraintHandler.java:59)
at io.undertow.security.handlers.AuthenticationMechanismsHandler.handleRequest(AuthenticationMechanismsHandler.java:60)
at io.undertow.servlet.handlers.security.CachedAuthenticatedSessionHandler.handleRequest(CachedAuthenticatedSessionHandler.java:77)
at io.undertow.security.handlers.NotificationReceiverHandler.handleRequest(NotificationReceiverHandler.java:50)
at io.undertow.security.handlers.AbstractSecurityContextAssociationHandler.handleRequest(AbstractSecurityContextAssociationHandler.java:43)
at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
at org.wildfly.extension.undertow.security.jacc.JACCContextIdHandler.handleRequest(JACCContextIdHandler.java:61)
at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
at org.wildfly.extension.undertow.deployment.GlobalRequestControllerHandler.handleRequest(GlobalRequestControllerHandler.java:68)
at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
at io.undertow.servlet.handlers.ServletInitialHandler.handleFirstRequest(ServletInitialHandler.java:292)
at io.undertow.servlet.handlers.ServletInitialHandler.access$100(ServletInitialHandler.java:81)
at io.undertow.servlet.handlers.ServletInitialHandler$2.call(ServletInitialHandler.java:138)
at io.undertow.servlet.handlers.ServletInitialHandler$2.call(ServletInitialHandler.java:135)
at io.undertow.servlet.core.ServletRequestContextThreadSetupAction$1.call(ServletRequestContextThreadSetupAction.java:48)
at io.undertow.servlet.core.ContextClassLoaderSetupAction$1.call(ContextClassLoaderSetupAction.java:43)
at org.wildfly.extension.undertow.security.SecurityContextThreadSetupAction.lambda$create$0(SecurityContextThreadSetupAction.java:105)
at org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction.lambda$create$0(UndertowDeploymentInfoService.java:1508)
at org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction.lambda$create$0(UndertowDeploymentInfoService.java:1508)
at org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction.lambda$create$0(UndertowDeploymentInfoService.java:1508)
at org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction.lambda$create$0(UndertowDeploymentInfoService.java:1508)
at org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction.lambda$create$0(UndertowDeploymentInfoService.java:1508)
at io.undertow.servlet.handlers.ServletInitialHandler.dispatchRequest(ServletInitialHandler.java:272)
at io.undertow.servlet.handlers.ServletInitialHandler.access$000(ServletInitialHandler.java:81)
at io.undertow.servlet.handlers.ServletInitialHandler$1.handleRequest(ServletInitialHandler.java:104)
at io.undertow.server.Connectors.executeRootHandler(Connectors.java:326)
at io.undertow.server.HttpServerExchange$1.run(HttpServerExchange.java:812)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
Caused by: org.jboss.weld.exceptions.WeldException: WELD-000049: Unable to invoke public void com.skf.gui.controllers.general.GenericController.Init() on com.skf.gui.controllers.calc.CalculationController@4578ab34</span>
at org.jboss.weld.injection.producer.DefaultLifecycleCallbackInvoker.invokeMethods(DefaultLifecycleCallbackInvoker.java:99)
at org.jboss.weld.injection.producer.DefaultLifecycleCallbackInvoker.postConstruct(DefaultLifecycleCallbackInvoker.java:80)
at org.jboss.weld.injection.producer.BasicInjectionTarget.postConstruct(BasicInjectionTarget.java:122)
at org.jboss.weld.bean.ManagedBean.create(ManagedBean.java:162)
at org.jboss.weld.util.bean.IsolatedForwardingBean.create(IsolatedForwardingBean.java:45)
at org.omnifaces.cdi.BeanStorage.createBean(BeanStorage.java:62)
at org.omnifaces.cdi.viewscope.ViewScopeManager.createBean(ViewScopeManager.java:115)
at org.omnifaces.cdi.viewscope.ViewScopeManager$Proxy$_$$_WeldClientProxy.createBean(Unknown Source)
at org.omnifaces.cdi.viewscope.ViewScopeContext.get(ViewScopeContext.java:73)
at org.jboss.weld.context.PassivatingContextWrapper$AbstractPassivatingContextWrapper.get(PassivatingContextWrapper.java:76)
at org.jboss.weld.bean.ContextualInstanceStrategy$DefaultContextualInstanceStrategy.get(ContextualInstanceStrategy.java:100)
at org.jboss.weld.bean.ContextualInstance.get(ContextualInstance.java:50)
at org.jboss.weld.manager.BeanManagerImpl.getReference(BeanManagerImpl.java:758)
at org.jboss.weld.el.AbstractWeldELResolver.lookup(AbstractWeldELResolver.java:107)
at org.jboss.weld.el.AbstractWeldELResolver.getValue(AbstractWeldELResolver.java:90)
at org.jboss.as.jsf.injection.weld.ForwardingELResolver.getValue(ForwardingELResolver.java:46)
at javax.el.CompositeELResolver.getValue(CompositeELResolver.java:188)
at com.sun.faces.el.DemuxCompositeELResolver._getValue(DemuxCompositeELResolver.java:176)
at com.sun.faces.el.DemuxCompositeELResolver.getValue(DemuxCompositeELResolver.java:203)
at com.sun.el.parser.AstIdentifier.getValue(AstIdentifier.java:116)
at com.sun.el.parser.AstValue.getBase(AstValue.java:150)
at com.sun.el.parser.AstValue.getTarget(AstValue.java:169)
at com.sun.el.parser.AstValue.getType(AstValue.java:85)
at com.sun.el.ValueExpressionImpl.getType(ValueExpressionImpl.java:201)
at org.jboss.weld.el.WeldValueExpression.getType(WeldValueExpression.java:93)
at org.jboss.weld.el.WeldValueExpression.getType(WeldValueExpression.java:93)
at com.sun.faces.facelets.el.TagValueExpression.getType(TagValueExpression.java:98)
at com.sun.faces.renderkit.html_basic.HtmlBasicInputRenderer.getConvertedValue(HtmlBasicInputRenderer.java:95)
at javax.faces.component.UIViewParameter.getConvertedValue(UIViewParameter.java:437)
at javax.faces.component.UIInput.validate(UIInput.java:975)
at javax.faces.component.UIInput.executeValidate(UIInput.java:1248)
at javax.faces.component.UIInput.processValidators(UIInput.java:712)
at javax.faces.component.UIViewParameter.processValidators(UIViewParameter.java:278)
at org.omnifaces.component.input.ViewParam.processValidators(ViewParam.java:120)
at javax.faces.component.UIComponentBase.processValidators(UIComponentBase.java:1261)
at javax.faces.component.UIComponentBase.processValidators(UIComponentBase.java:1261)
at javax.faces.component.UIViewRoot.processValidators(UIViewRoot.java:1195)
at com.sun.faces.lifecycle.ProcessValidationsPhase.execute(ProcessValidationsPhase.java:76)
... 55 more
Caused by: java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.jboss.weld.injection.producer.DefaultLifecycleCallbackInvoker.invokeMethods(DefaultLifecycleCallbackInvoker.java:97)
... 92 more
Caused by: javax.faces.FacesException: ajax() can only be used in AJAX requests!
at org.primefaces.PrimeFaces.ajax(PrimeFaces.java:230)
 at com.skf.gui.controllers.calc.CalculationController.InitPage1(CalculationController.java:114)</span>
at com.skf.gui.controllers.calc.CalculationController.OnPostConstruct(CalculationController.java:96)</span>
at com.skf.gui.controllers.general.GenericController.Init(GenericController.java:69)</span>
... 97 more

Here is the code-snipped that raises the current exception with the new method:

Code: Select all

@ViewScoped
@Named(value="calc")
public class CalculationController implements Serializable  
{
	private static final long serialVersionUID = 7040550658218725378L;

	@Override
    public void OnPostConstruct()
    {
        InitPage1();
    }
    private void InitPage1()
    {
        // Update Master Detail Controller:
        //
        // Working right:
        // RequestContext context = RequestContext.getCurrentInstance();
        // context.update("masterDetail");
        //
        // Raising an exception:
        PrimeFaces.current().ajax().update("masterDetail");
    }
}

Re: Deprecated RequestContext not working in Primefaces 6.2 - SNAPSHOT

Posted: 09 Nov 2017, 09:34
by stefan.sibitz
So i see that the error is raised from Primefaces

"ajax() can only be used in AJAX requests!"

but i don't get it in Primefaces 6.1.8 in combination with the RequestContext.


So what's the alternative ?

Re: Deprecated RequestContext not working in Primefaces 6.2 - SNAPSHOT

Posted: 09 Nov 2017, 10:18
by tandraschko
Only use it in ajax requests - if you use it in non-ajax requests, i will currently also do NOTHING ;)

Code: Select all

PrimeFaces pf = PrimeFaces.current();
if (pf.isAjaxRequest()) {
    pf.ajax().update("...");
}

Re: Deprecated RequestContext not working in Primefaces 6.2 - SNAPSHOT

Posted: 09 Nov 2017, 12:02
by chrishj
What is RequestContext replaced by?

Re: Deprecated RequestContext not working in Primefaces 6.2 - SNAPSHOT

Posted: 09 Nov 2017, 14:09
by Melloware
RequestContext = PrimeFaces.current();

Re: Deprecated RequestContext not working in Primefaces 6.2 - SNAPSHOT

Posted: 09 Nov 2017, 16:43
by stefan.sibitz
I don't understand what do you mean with "use it in Ajax-Request's" ?

I want to update a MasterDetail-Component on @PostConstruct and also on Ajax-Request's
by updating the component via the RequestContext / update function
and now i am getting an Fatal Weld Exception which kills my application when i am not in an Ajax-Request ?!

That's not a good practice because no one knows that it's now a problem which raises an exception if he only update the primefaces library !

Take a look at the primefaces-showcase by now:
You execute a JavaScript on PostConstruct which show's the user an alert -
does this also not work anymore in the next version :

https://www.primefaces.org/showcase/ui/ ... text.xhtml

Re: Deprecated RequestContext not working in Primefaces 6.2 - SNAPSHOT

Posted: 09 Nov 2017, 16:46
by tandraschko
@PostConstruct can be called in non-ajax requests too (like the initial page request). There is no ajax-update possible, that only works in ajax-requests. To overcome this, you can must only use update() in an ajax-request, like i mentioned in my last post.

Therefore the update() method is now below the ajax() method, to make it clear that it belongs to an ajax-request and will NEVER work in non-ajax requests.
I'm sure many users in the past called the update() method without any effect.

Re: Deprecated RequestContext not working in Primefaces 6.2 - SNAPSHOT

Posted: 09 Nov 2017, 16:54
by stefan.sibitz
But raising an Exception which kill's any application
if they is using the "new function" in the @PostConstruct of the Application
seems to be a little bit hard to solve for the user instead of "ignoring" it...

Re: Deprecated RequestContext not working in Primefaces 6.2 - SNAPSHOT

Posted: 09 Nov 2017, 17:03
by tandraschko
It has absoluty nothing todo with PostConstruct and works still fine if you wrap it with the IF statement.

It just helps you to not execute code, which should not be executed now and does not have ANY effect. It's actually a shame that we didn't add this years ago ;)

I will switch to log a warning for now and probably reintroduce the exeption again in the next release.

Re: Deprecated RequestContext not working in Primefaces 6.2 - SNAPSHOT

Posted: 10 Nov 2017, 08:51
by stefan.sibitz
Yes, you are right that it shouldn't be used in a non Ajax-Request - that's right.
But first warn the user and after re-introducing that an exception will be raised is the better way i think ;-)

What i (and i think the other user's will do) is that i am wrapping it in a library/function
and do the Ajax-Test before it raises me an exception.
So i got the same result as before (ignoring the exception),
but it also work's for the update because there is no difference if i do the Update via Ajax or do a full re-rendering...
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