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http://issues.apache.org/jira/browse/VELTOOLS-69?page=comments#action_12454002 
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Nathan Bubna commented on VELTOOLS-69:
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When would this splitting be done?  I wouldn't want to do it all up front, as 
that seems like it could affect performance.

I suppose if "foo" is requested and has no value, then we could search the 
value map for things starting with "foo.", if any are found, then convert those 
to a hashmap and return it.  But that seems like it would still break 
#if($query.foo) so far as backwards compatibility goes.   Maybe we can do 
something like this (with either a "sub" or a hashmap) in VelocityTools 2.0, 
but i don't want to break B.C. for this version.

> ValueParserSub generic getter never worked
> ------------------------------------------
>
>                 Key: VELTOOLS-69
>                 URL: http://issues.apache.org/jira/browse/VELTOOLS-69
>             Project: VelocityTools
>          Issue Type: Bug
>          Components: VelocityView
>    Affects Versions: 1.3
>            Reporter: Claude Brisson
>             Fix For: 1.3
>
>         Attachments: valueparser.patch
>
>
> (I attach this issue to the VelocityView component but we may need a Generic 
> component in Jira)
> When $query is the ValueParser object for the query string http://...?foo=5,
> then $query.foo.int is an invalid reference.
> Why? Because there is a collision of variable names in 
> ValueParserSub.get(Object key).
> I profit of this opportunity to state that I really don't like the 
> ValueParserSub class, because it breaks the "#if($query.foo)" syntax. Hence, 
> it is not backward compatible. Or at least, it could return null for an 
> unexistant key.
> Is it really usefull to keep it now that Velocity handles conversions much 
> better? Since obviously nobody used the $query.foo.int feature, it is still 
> time to remove it... Also, since the need to convert between types can emerge 
> elsewhere, it would be much cleaner to have a standalone converter object. 
> Yes, we loose the syntax $query.foo.int, but is it that nice a syntax?

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