Is it possible to plug in a Comparator to the dataTable operation somehow to enable a Set to be sorted based on that Comparator?
In fact, this could be used as a sorting mechanism for any collection, couldn't it? Does such functionality exist? (I couldn't find anything in the Javadoc to indicate so.) Simon Kitching-3 wrote: > > And in general sets are not ordered, which doesn't make sense when > displaying data in a table. Read-only tables would be odd, but > implementing editable tables would be really nasty if the server-side > data structure that the table corresponds to could return its data in > any order. > > The JSF spec explicitly lists what collections are supported for UIData, > and Set is not one of them. > > Cagatay Civici wrote: >> Hi, >> >> It's not supported by UIData, because sets are not indexed. >> >> The workaround would be the wrapper you mentioned or a custom property >> resolver; >> >> http://www.jroller.com/page/mert?entry=settolistpropresolver_for_jsf_el >> >> Cagatay >> >> On 1/14/07, *lightbulb432* < [EMAIL PROTECTED] >> <mailto:[EMAIL PROTECTED]>> wrote: >> >> >> Can the value attribute of a h:dataTable be set to any Collection? I >> tried >> setting it to a Set (specifically, HashSet), but that gave trouble. >> To solve >> this, I added another property to the backing bean which simply >> wrapped that >> bean's Set in a List and used that as the value attribute, and then >> it >> worked fine! >> >> What is the reason that Sets/HashSets aren't allowed to be used? I >> sure hope >> there's a way to get it work, as many of my Collections are Sets and >> I >> wouldn't like to clutter my code with List wrappers just to make >> this work. >> -- >> View this message in context: >> >> http://www.nabble.com/Can-dataTable%27s-value-be-a-HashSet--tf2982099.html#a8329377 >> >> Sent from the MyFaces - Users mailing list archive at Nabble.com >> <http://Nabble.com>. >> >> > > > -- View this message in context: http://www.nabble.com/Can-dataTable%27s-value-be-a-HashSet--tf2982099.html#a8414939 Sent from the MyFaces - Users mailing list archive at Nabble.com.
