I am glad the work-around works.
Better to ask that of the experts. I am a mere user ;)
Ed, should he file this as a bug?
Manfred
> -------- Original Message --------
> Subject: RE: Is JSF incompatible with generics?
> From: "Freire, Jose Luis (PT - Lisbon)" <jfreire_at_deloitte.pt>
> Date: Tue, June 09, 2009 8:53 am
> To: "dev_at_javaserverfaces.dev.java.net"
> <dev_at_javaserverfaces.dev.java.net>
>
>
> Hi Manfred!
>
>
>
> Manually forcing the converter to "javax.faces.Integer" works.
>
>
>
> Did a little debugging and inspecting MethodBindingMethodExpressionAdapter.java, the methodExpression property has expectedType=String.class.
>
>
>
> It looks like generic based properties are incorrectly evaluated as String.
>
>
>
> Should I file a bug?
>
>
>
> José Freire
>
> Consulting - Financial Services Industry
>
> Deloitte Consultores, S.A.
>
> Deloitte | Edifício Atrium Saldanha, Praça Duque de Saldanha, 1 - 7º, 1050-094 Lisboa, Portugal
>
> Tel/Direct: +(351) 210 422 500 | Fax: +(351) 210 422 950
>
> jfreire_at_deloitte.pt | www.deloitte.pt
>
>
>
> Please consider the environment before printing.
>
>
>
>
>
>
>
> -----Original Message-----
>
> From: Manfred Riem [mailto:mriem_at_manorrock.org]
>
> Sent: terça-feira, 9 de Junho de 2009 15:16
>
> To: dev_at_javaserverfaces.dev.java.net
>
> Subject: RE: Is JSF incompatible with generics?
>
>
>
> Uhhh since when is the reference developer list deprecated? Note he
>
> is talking about the Mojarra implementation not anything from JBoss.
>
>
>
> I don't know exactly why it is not working, but having you
>
> tried registering the converter manually on the h:inputText?
>
>
>
> Manfred
>
>
>
> > -------- Original Message --------
>
> > Subject: Re: Is JSF incompatible with generics?
>
> > From: Ilya Shaikovsky <ishaikovsky_at_exadel.com>
>
> > Date: Tue, June 09, 2009 8:02 am
>
> > To: dev_at_javaserverfaces.dev.java.net
>
> >
>
> >
>
> > This list is deprecated. Use Jboss.org resources in order to get support.
>
> >
>
> > Regards!
>
> >
>
> > Freire, Jose Luis (PT - Lisbon) пишет:
>
> > >
>
> > > Using JSF 1.2.12, Facelets 1.1.14, Tomcat 6.0.18.
>
> > >
>
> > >
>
> > >
>
> > > I’m not sure where to open this bug, since I’m not sure if it’s JSF,
>
> > > Facelets, or EL related.
>
> > >
>
> > >
>
> > >
>
> > > If we have this simple class:
>
> > >
>
> > > *public* *class* GenericsTestController<E *extends* Object> {
>
> > >
>
> > >
>
> > >
>
> > > *private* E value;
>
> > >
>
> > >
>
> > >
>
> > > *public* E getValue() {
>
> > >
>
> > > *return* value;
>
> > >
>
> > > }
>
> > >
>
> > >
>
> > >
>
> > > *public* *void* setValue(E value) {
>
> > >
>
> > > *this*.value = value;
>
> > >
>
> > > }
>
> > >
>
> > > }
>
> > >
>
> > >
>
> > >
>
> > > And we have this class to use as a managed bean (integerTest):
>
> > >
>
> > > *public* *class* IntegerTestController *extends*
>
> > > GenericsTestController<Integer> {
>
> > >
>
> > >
>
> > >
>
> > > *public* String add() {
>
> > >
>
> > > setValue(getValue()+1);
>
> > >
>
> > > *return* *null*;
>
> > >
>
> > > }
>
> > >
>
> > > *public* String subtract() {
>
> > >
>
> > > setValue(getValue()-1);
>
> > >
>
> > > *return* *null*;
>
> > >
>
> > > }
>
> > >
>
> > > }
>
> > >
>
> > >
>
> > >
>
> > > This JSF code will not work:
>
> > >
>
> > > <h:form>
>
> > >
>
> > > Value:
>
> > >
>
> > > <h:inputText value="#{integerTest.value}" />
>
> > >
>
> > > <h:commandButton action="#{integerTest.add}" value="+" />
>
> > >
>
> > > <h:commandButton action="#{integerTest.subtract}" value="-" />
>
> > >
>
> > > </h:form>
>
> > >
>
> > >
>
> > >
>
> > > With this error:
>
> > >
>
> > > _java.lang.ClassCastException_: java.lang.String cannot be cast to
>
> > > java.lang.Integer
>
> > >
>
> > > at
>
> > > genericstest.IntegerTestController.add(_IntegerTestController.java:18_)
>
> > >
>
> > > at sun.reflect.NativeMethodAccessorImpl.invoke0(_Native Method_)
>
> > >
>
> > > at
>
> > > sun.reflect.NativeMethodAccessorImpl.invoke(_NativeMethodAccessorImpl.java:39_)
>
> > >
>
> > > at
>
> > > sun.reflect.DelegatingMethodAccessorImpl.invoke(_DelegatingMethodAccessorImpl.java:25_)
>
> > >
>
> > > at java.lang.reflect.Method.invoke(_Method.java:597_)
>
> > >
>
> > > at org.apache.el.parser.AstValue.invoke(_AstValue.java:172_)
>
> > >
>
> > > at
>
> > > org.apache.el.MethodExpressionImpl.invoke(_MethodExpressionImpl.java:276_)
>
> > >
>
> > > at
>
> > > com.sun.facelets.el.TagMethodExpression.invoke(_TagMethodExpression.java:68_)
>
> > >
>
> > > at
>
> > > javax.faces.component.MethodBindingMethodExpressionAdapter.invoke(_MethodBindingMethodExpressionAdapter.java:88_)
>
> > >
>
> > > at
>
> > > com.sun.faces.application.ActionListenerImpl.processAction(_ActionListenerImpl.java:102_)
>
> > >
>
> > > at javax.faces.component.UICommand.broadcast(_UICommand.java:387_)
>
> > >
>
> > > at
>
> > > javax.faces.component.UIViewRoot.broadcastEvents(_UIViewRoot.java:475_)
>
> > >
>
> > > at
>
> > > javax.faces.component.UIViewRoot.processApplication(_UIViewRoot.java:756_)
>
> > >
>
> > > at
>
> > > com.sun.faces.lifecycle.InvokeApplicationPhase.execute(_InvokeApplicationPhase.java:82_)
>
> > >
>
> > > at com.sun.faces.lifecycle.Phase.doPhase(_Phase.java:100_)
>
> > >
>
> > > at
>
> > > com.sun.faces.lifecycle.LifecycleImpl.execute(_LifecycleImpl.java:118_)
>
> > >
>
> > > at javax.faces.webapp.FacesServlet.service(_FacesServlet.java:265_)
>
> > >
>
> > > at
>
> > > org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(_ApplicationFilterChain.java:290_)
>
> > >
>
> > > at
>
> > > org.apache.catalina.core.ApplicationFilterChain.doFilter(_ApplicationFilterChain.java:206_)
>
> > >
>
> > > at
>
> > > org.apache.catalina.core.StandardWrapperValve.invoke(_StandardWrapperValve.java:233_)
>
> > >
>
> > > at
>
> > > org.apache.catalina.core.StandardContextValve.invoke(_StandardContextValve.java:191_)
>
> > >
>
> > > at
>
> > > org.apache.catalina.core.StandardHostValve.invoke(_StandardHostValve.java:128_)
>
> > >
>
> > > at
>
> > > org.apache.catalina.valves.ErrorReportValve.invoke(_ErrorReportValve.java:102_)
>
> > >
>
> > > at
>
> > > org.apache.catalina.core.StandardEngineValve.invoke(_StandardEngineValve.java:109_)
>
> > >
>
> > > at
>
> > > org.apache.catalina.connector.CoyoteAdapter.service(_CoyoteAdapter.java:286_)
>
> > >
>
> > > at
>
> > > org.apache.coyote.http11.Http11Processor.process(_Http11Processor.java:845_)
>
> > >
>
> > > at
>
> > > org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(_Http11Protocol.java:583_)
>
> > >
>
> > > at
>
> > > org.apache.tomcat.util.net.JIoEndpoint$Worker.run(_JIoEndpoint.java:447_)
>
> > >
>
> > > at java.lang.Thread.run(_Thread.java:619_)
>
> > >
>
> > >
>
> > >
>
> > > In fact, it fails with the same error even if we override getValue and
>
> > > setValue on IntegerTestController.
>
> > >
>
> > >
>
> > >
>
> > > The only workaround is not to extend from GenericsTestController and
>
> > > implement the “value” property as Integer in the IntegerTestController.
>
> > >
>
> > >
>
> > >
>
> > > Help anyone?**
>
> > >
>
> > > * *
>
> > >
>
> > > *José Freire
>
> > > *Consulting - Financial Services Industry
>
> > > Deloitte Consultores, S.A.
>
> > > Deloitte | Edifício Atrium Saldanha, Praça Duque de Saldanha, 1 - 7º,
>
> > > 1050-094 Lisboa, Portugal
>
> > > Tel/Direct: +(351) 210 422 500 | Fax: +(351) 210 422 950
>
> > > jfreire_at_deloitte.pt | www.deloitte.pt
>
> > >
>
> > > Please consider the environment before printing.
>
> > >
>
> > >
>
> > >
>
> > >
>
> > >
>
> > > *Disclaimer:*
>
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>
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