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From stanl...@gmail.com
Subject Re: using a custom Converter for elements of a Collection
Date Thu, 13 Jan 2011 00:08:57 GMT
Can we see your related files?

On Wed, Jan 12, 2011 at 3:43 PM, Scott Koenig <scott.l.koenig@gmail.com>wrote:

> Hello,
>
> In my company's internal CMS, we are implementing two new asset types,
> Videos and Playlists (collections of Videos). In the Video UI, the user
> designates which Playlists are to be associated with a given Video, and
> these values are posted on save via an array called "playlists" which
> contains the UIDs of each Playlist. These are represented as an
> ArrayList<Playlist> in the Video POJO.
>
> We have implemented a PlaylistConverter to convert each String UID to a
> Playlist instance (and back), and going off of
>
> http://struts.apache.org/2.1.8/docs/type-conversion.html#TypeConversion-CollectionandMapSupport
> ,
> added Element_playlists=[converterpackage].PlaylistConverter to
> Video-conversion.properties.
>
> Save was not committing and there seemed to be some conversion error, so I
> stepped through the conversion process to try and determine what was going
> wrong. Everything seems to be fine at the Collection level; it properly
> determines that the toType of the collection is List and the memberType is
> Playlist. However, when XWorkConverter.getConverter() tries to find the
> converter for the individual members, even though Element_playlists=class
> [converterpackage].PlaylistConverter is present in the mappings, the
> property String passed in is still "playlists" instead of
> "Element_playlists" and thus it does not hook up the playlist ID with the
> converter and falls back to the default converter (which cannot handle it
> and is what is raising the error).
>
> Any guidance as to what could be going wrong here would be greatly
> appreciated.
>
> Thank you very much,
> ~~Scott
>
>
> PS--If it's useful, our system depends on the following libraries:
>
> ognl-3.0.jar
> struts2-core-2.1.8.1.jar
> xwork-core-2.1.6.jar
>

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