[Building Sakai] How to get a user's sites

[Joshua Swink]

This is a programming question. How can you get a list of a user's sites?
The catch: this is not a logged-in user.

When looking for examples of this in the current Sakai code, I come across
this (in UserPrefsTool.java):

SiteService.getSites(org.sakaiproject.site.api.SiteService.SelectionType.ACCESS,
null, null, null, org.sakaiproject.site.api.SiteService.SortType.TITLE_ASC,
null);

The above function relies on the user being logged in. I checked the code
of SiteService.getSites, and the assumption that it's searching for the
current user's sites is buried deeply within it.

The best I can could up with, using the current API, is this:


        public List<String> getUserSites(String userId) {
            List<String> userSites = new ArrayList<String>();

            Map<String, String> userRoles =
authzGroupService.getUserRoles(userId, null);
            for (String realmId: userRoles.keySet()) {
                Reference r = entityManager.newReference(realmId);
                if (siteService.SITE_SUBTYPE.equals(r.getSubType())) {
                    userSites.add(r.getId());
                }
            }
            return userSites;
        }

Is there a better way?

Another question. Would my function work properly for people who are
"provided", e.g. who are members of course sites due to being in a roster
that is associated with a site?

Josh
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