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https://issues.apache.org/jira/browse/VELOCITY-615?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Nathan Bubna resolved VELOCITY-615.
-----------------------------------
Resolution: Fixed
Fix Version/s: (was: 1.6)
1.7
1.6.1
> Inconsistent macro bahaviour in cached and non-cached modes
> -----------------------------------------------------------
>
> Key: VELOCITY-615
> URL: https://issues.apache.org/jira/browse/VELOCITY-615
> Project: Velocity
> Issue Type: Bug
> Components: Engine
> Affects Versions: 1.5
> Environment: Windows XP, Tomcat 6.x, JVM 1.6
> Reporter: Steve O'Hara
> Fix For: 1.6.1, 1.7
>
>
> Here's the scenario; we have a framework that allows us to reload the
> Velocity runtime so that we can tinker with caching etc at runtime. We
> normally run development with template caching turned off and deliver to the
> client with caching turned on.
> There is a problem with inline macros (probably macro libraries too, not
> sure) whereby they will behave differently once they are compiled and cached
> then when they are interpreted at runtime. It is all to do with the
> re-assignment of parameter variables within the macro.
> Here is a very simple example;
> #macro(tmpMacro $FieldNames)
> #set($FieldNames="ingredient." +
> $FieldNames.replaceAll(",",",ingredient."))
> .....
> #end
> #tmpMacro("one,two,three")
> This works fine when the template is not cached - as soon as you turn on
> caching, the macro becomes unreliable.
> My original prognosis was that we were upsetting the variable types by
> converting strings into lists but as you can see, that isn't the case in this
> example. The problem is solved by changing the assignment to;
> #set($Names="ingredient." + $FieldNames.replaceAll(",",",ingredient."))
> I can appreciate that maybe this type of "re-assignment" of parameters might
> be an issue, but the real problem is the inconsistency between the cached and
> non-cached behaviours.
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