[xwiki-users] Livetable tag cloud modification

Hello all, Background: We're trying to build a searchable user directory of XWiki users where people can be searched by specialty. The deal here is that each user who contributes to the wiki is good at something and we wanted other users to be able to find contributors by their specialty in case they need some help. XWiki Feature: We are using the livetable user directory example provided on the xwiki.org website & it works great. However, users are adding their specialty through the tags on their own profile pages. This too is searchable using the livetable macro option to enable a tagcloud. Concern/Issue: Our user base is currently a few hundred and is expected to grow rapidly soon. Each user has some tags to add to his profile which leads to a lot of tags in the tagcloud right above the livetable. Also, the page loading has become very slow since the entire tag cloud is loading along with the livetable. Possible Solution: Could it be possible to use the ajax suggest to type in these "specialty" tags rather than display an entire tag cloud on the livetable page. The single tag textbox would provide the search criteria to the livetable document filtering process. Alternatively, could someone please help me with the search query for pulling up pages with XWiki.XWikiUsers objects by using values of XWiki.Tags objects on the same document. I've looked up queries for hql searches & unable to find one which crosses multiple classes . Most queries are searches based on objects of one class only. (Can we have 2 BaseObjects, let's say obj1 & obj2 to represent the two different object types embedded in the same document). Any help would be greatly appreciated. Regards, Dilipkumar Jadhav