[jboss-jira] [JBoss JIRA] (WFLY-3456) Can not call method with generic type parameter with null value

[David Lloyd (JIRA)]

    [ https://issues.jboss.org/browse/WFLY-3456?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12977941#comment-12977941 ] 

David Lloyd commented on WFLY-3456:
-----------------------------------

Seems to me that the only possible *consistent* answer is to always choose the most general method.  You could in theory call the most specific method but that is more likely (IMO) to result in ambiguity.

You could however narrow the possibilities somewhat further by discarding bridge methods, if it doesn't do so already.

> Can not call method with generic type parameter with null value
> ---------------------------------------------------------------
>
>                 Key: WFLY-3456
>                 URL: https://issues.jboss.org/browse/WFLY-3456
>             Project: WildFly
>          Issue Type: Bug
>      Security Level: Public(Everyone can see) 
>          Components: JSF
>    Affects Versions: 8.1.0.Final
>            Reporter: Marcel Neuwohner
>            Assignee: Farah Juma
>
> If you call a method with a generic type parameter from EL with null as parameter value you get 
> {code}
> javax.el.MethodNotFoundException
> Unable to find unambiguous method: SimpleOrderHandler$Proxy$_$$_WeldClientProxy.getLastUpdate(null)
> at
> javax.el.Util.findWrapper(Util.java:322)
> javax.el.Util.findMethod(Util.java:203)
> javax.el.ELUtil.findMethod(ELUtil.java:288)
> javax.el.BeanELResolver.invoke(BeanELResolver.java:527)
> javax.el.CompositeELResolver.invoke(CompositeELResolver.java:256)
> com.sun.el.parser.AstValue.getValue(AstValue.java:136)
> com.sun.el.parser.AstValue.getValue(AstValue.java:204)
> com.sun.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:226)
> org.jboss.weld.el.WeldValueExpression.getValue(WeldValueExpression.java:50)
> com.sun.faces.facelets.el.TagValueExpression.getValue(TagValueExpression.java:109)
> {code}



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