Ask HN: CMS Advice.

We are looking for a CMS with following features in mind.

= LDAP auth

= Wysiwyg editor inside browser

= Can declare schema like faculty, students, courses, rooms, meetings, minutes, projects, papers, reports etc. along with presentation hooks

= Tags and date attributes

= Good search with tag and date restrictions

= Be able to chop meeting minutes document into minute items via data entry mechanism or post facto (don't want to score whole doc wrt query but individual items discussed; tags associated with items too)

= Can extend using Java and JSP (preferred over PHP, Python, Ruby etc.)

= Keeps past versions preferably with diffs

= Easy backups

We have considered XWiki and JSPWiki. Would like to know what the community here would recommend.