[jira] Commented: (SB-61) Refactor ViewPreparer support

["David H. DeWolf (JIRA)" <ji...@apache.org>]

    [ http://issues.apache.org/struts/browse/SB-61?page=comments#action_38521 ] 
            
David H. DeWolf commented on SB-61:
-----------------------------------

Let's attack this in two different modes:

1) Remove support for both type and name
This will be addressed by issue SB-64

2) Add feature of caching preparers.
This issues will be addressed by this bug.  I have started along the path by creating a configurable PreparerFactory interface which will provide ViewPreparer implementations.  The default implementation does cache based off of classname.  Is this caching behavior all that is required?  Or, do we want to support named instances as well?

> Refactor ViewPreparer support
> -----------------------------
>
>                 Key: SB-61
>                 URL: http://issues.apache.org/struts/browse/SB-61
>             Project: Sandbox
>          Issue Type: Improvement
>          Components: Tiles
>    Affects Versions: 2.0
>         Environment: N/A (design issue)
>            Reporter: Antonio Petrelli
>
> The "preparer" support in tags and definitions declared in Tiles definitions configuration files consists of parsing "preparerClass" and "preparerUrl" attributes.
> Since "preparerUrl" is pretty useless, because it includes the URL in the response and can be replaced by using the "template" attribute, it should be removed.
> Probably we should give support to "named preparers", i.e. preparers that are defined in Tiles configuration files (maybe a "name-class" pair) and in a new JSP tag. This way, tags can use preparers without instantiating a new one for each JSP call: in this way, preparers configuration will resemble Struts action configuration. If "named preparers" support will be implemented, probably "preparerClass" attribute should be removed.

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