[jira] [Closed] (VELOCITY-858) Class org.apache.velocity.util.introspection.UberspectImpl can not access a member of class com.google.common.collect.Iterables$8 with modifiers "public"

["Claude Brisson (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/VELOCITY-858?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Claude Brisson closed VELOCITY-858.
-----------------------------------

> Class org.apache.velocity.util.introspection.UberspectImpl can not access a member of class com.google.common.collect.Iterables$8 with modifiers "public"
> ---------------------------------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: VELOCITY-858
>                 URL: https://issues.apache.org/jira/browse/VELOCITY-858
>             Project: Velocity
>          Issue Type: Bug
>    Affects Versions: 1.7
>         Environment: Java 8, guava
>            Reporter: Andrey Chursin
>            Assignee: Claude Brisson
>            Priority: Major
>             Fix For: 2.0
>
>
> Probably related issue:
> https://issues.apache.org/jira/browse/VELOCITY-579
> I am passing result of guava's Iterables.transform() to velocity.
> Attempt to iterate over it throws access exception, as UberspectImpl tries to access method iterator on object's class
>            Class type = obj.getClass();
> ...
>           Method iter = type.getMethod("iterator", null);
> Problem is, that while iterator() method is public, class com.google.common.collect.Iterables$8 is private, so velocity can't access it's method through reflection.
> I suggest call Iterable::iterator() for classes implementing Iterable, instead of trying to access method through reflection, as you already do for Collection implementations.
> Basically, replace (in UberspectImpl::getIterator(Object, Info))
> else if (obj instanceof Collection)
>         {
>             return ((Collection) obj).iterator();
>         }
> with
> else if (obj instanceof Iterable)
>         {
>             return ((Iterable) obj).iterator();
>         }



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