[jboss-jira] [JBoss JIRA] (WFLY-2690) JSP/JSPX tags don't work with Wildfly CR1

[Matus Zamborsky (JIRA)]

    [ https://issues.jboss.org/browse/WFLY-2690?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12934143#comment-12934143 ] 

Matus Zamborsky commented on WFLY-2690:
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Jozef, do you mean, that the method asString() from Identiefier should be unique for every type ? Or there is something else which should be taken care of. If it's the first option, we can add Integer.toHexString(System.identityHashCode(clazz)) to the identifier string. 

The problem is that Integer.toHexString(System.identityHashCode(clazz)) does not necessary need to be unique by java spec. Another, slightly more complicated solution will be to use a static Map from Class object to unique generated identifier. As a source we can use static Long number incremented and returned in synchronized method, so every invocation will return new unique number. Even better, if we use the classloader of the clazz as there can't be two classes with same name in one classloader.
                
> JSP/JSPX tags don't work with Wildfly CR1
> -----------------------------------------
>
>                 Key: WFLY-2690
>                 URL: https://issues.jboss.org/browse/WFLY-2690
>             Project: WildFly
>          Issue Type: Bug
>      Security Level: Public(Everyone can see) 
>          Components: Web (Undertow)
>    Affects Versions: 8.0.0.CR1
>         Environment: OpenJDK Runtime Environment (fedora-2.4.3.0.fc18-x86_64 u45-b15)
> OpenJDK 64-Bit Server VM (build 24.45-b08, mixed mode)
>            Reporter: Otávio Garcia
>            Assignee: Jozef Hartinger
>
> My app works fine on JBoss AS 7.1. When I migrate to Wildfly 8.0.0 CR1, my JSP tags don't work as expected. My project is a EAR with WAR module.
> When app starts, in the 1st access to page A, tag file is compiled and the page are rendered fine. But when I access another page (B in example), I got this error: org.apache.jasper.JasperException: java.lang.ClassCastException: org.apache.jsp.tag.web.default_tagx cannot be cast to org.apache.jsp.tag.web.default_tagx
> If I restart Wildfly and try to access page B, works fine. But when I access page A, I got the same error.
> My default.tagx is bellow:
> <jsp:root xmlns:jsp="http://java.sun.com/JSP/Page" xmlns:html="http://www.w3.org/1999/xhtml" version="2.2">
>     <jsp:output doctype-root-element="HTML" doctype-system="about:legacy-compat" omit-xml-declaration="yes" />
>     some code
>     <jsp:doBody />
>     more code
> </jsp:root>
> And the pages are somethink like this:
> <tags:default xmlns:tags="urn:jsptagdir:/WEB-INF/tags" xmlns:jsp="http://java.sun.com/JSP/Page" xmlns:html="http://www.w3.org/1999/xhtml">
>     <jsp:output omit-xml-declaration="yes" />
>     my code here
> </tags:default>
> I was created a new empty project with two pages and one tagfile. The error don't occurs. But when I add CDI capabilities, the error occurs. There are something in CDI that confuses Jastow?
> As discussed here: https://community.jboss.org/message/850730

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