[xwiki-users] Class with hibernate query

Hi (XWiki 2.7.2) I've defined a class with a property defined as DatabaseList It's a multi select The Hibernate query is: select ata.filename from XWikiAttachment as ata, XWikiDocument as doc where doc.fullName ='CdLSAssociations.FlagAttachments' and doc.id = ata.docId order by ata.filename This works fine, when I create a new object of this class I can select multiple fileNames My questions; I would like to strip the filename extension from the ata.filename (ar.png => ar) I was trying a substr(ata.filename,1,2) does not work How do I do this? Second, I wonder if it is possible to add a second collumn to the query that uses a translation table like select ata.filename, $msg.get(ata.filename) as translatedName from XWikiAttachment as ata, XWikiDocument as doc where doc.fullName ='CdLSAssociations.FlagAttachments' and doc.id = ata.docId order by translatedName and use in the class property defenition the ID Field name and Value Field Name Any help is highly appreciated Gerritjan