[jira] [Closed] (WW-5497) Access to non-static members of class objects fails with IllegalArgumentException

["Lukasz Lenart (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/WW-5497?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Lukasz Lenart closed WW-5497.
-----------------------------
    Resolution: Won't Fix

Feel free to re-open if you disagree

> Access to non-static members of class objects fails with IllegalArgumentException
> ---------------------------------------------------------------------------------
>
>                 Key: WW-5497
>                 URL: https://issues.apache.org/jira/browse/WW-5497
>             Project: Struts 2
>          Issue Type: Bug
>          Components: Value Stack
>    Affects Versions: 6.7.0
>            Reporter: Sebastian Götz
>            Priority: Major
>             Fix For: 6.7.1
>
>
> When using non-static methods of class objects in OGNL expressions, the evaluation fails in
> {code:java}
> com.opensymphony.xwork2.ognl.SecurictyMemberAccess.isAccessible{code}
>  because only static members and constructors are allowed at this location.
>  
> {code:java}
>  if (target != null) {
>     // Special case: Target is a Class object but not Class.class
>     if (Class.class.equals(target.getClass()) && !Class.class.equals(target)) {
>         if (!isStatic(member) && !Constructor.class.equals(member.getClass())) {
>             throw new IllegalArgumentException("Member expected to be static or constructor!");
>         }
>         if (!member.getDeclaringClass().equals(target)) {
>             throw new IllegalArgumentException("Target class does not match member!");
>         }
>         target = null; // This information is not useful to us and conflicts with following logic which expects target to be null or an instance containing the member
>     // Standard case: Member should exist on target
>     } else if (!member.getDeclaringClass().isAssignableFrom(target.getClass())) {
>         throw new IllegalArgumentException("Member does not exist on target!");
>     }
> }{code}
>  
> In my concrete use-case I want to access the name of the class of an object from within the UI rendering with a simple OGNL expression:
> {noformat}
> <s:property value="#attr.node.type.name"/>{noformat}
> The object is on the stack and found by the ValueStack and resolve to java.lang.Object.class. Access to the {{getName()}} method is failing in this line
> {code:java}
> if (!isStatic(member) && !Constructor.class.equals(member.getClass()) {code}
> Is this the desired behavior or is the implementation not considering class objects having non-static members as well?



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