Package com.Yasna.util

Examples of com.Yasna.util.Cache


    public ForumPermissions getPermissions(Authorization authorization) {
        int userID = authorization.getUserID();

        //Get the user perm cache for this forum
        Cache userPermCache = (Cache)factory.getCacheManager().get(
            DbCacheManager.USER_PERMS_CACHE,
            new Integer(id)
        );

        //Simple case: if cache is turned on and the user is already cached,
        //we can simply return the cached permissions.
        if (userPermCache != null) {
            ForumPermissions permissions =
                    (ForumPermissions)userPermCache.get(new Integer(userID));
            if (permissions != null) {
                return permissions;
            }
        }

        //Not so simple case: cache is not turned on or the user permissions
        //have not been cached yet.
        boolean isAnonymous = (userID == -1);
        boolean isUser = !isAnonymous;

        ForumPermissions finalPermissions = ForumPermissions.none();

        //Step 1 - Get permissions for the User. This includes anonymous
        //perms, "special user" perms, and the specific perms for the user.
        if (isUser) {
            ForumPermissions userPermissions = factory.getUserPermissions(userID, id);
            //Combine permissions
            finalPermissions = new ForumPermissions(finalPermissions, userPermissions);
        }
        //Add in anonymous perms.
        ForumPermissions anonyPermissions = null;
        if (userPermCache != null) {
            anonyPermissions = (ForumPermissions)userPermCache.get(new Integer(-1));
        }
        //Otherwise, do our own lookup.
        if (anonyPermissions == null) {
            anonyPermissions = factory.getUserPermissions(-1, id);
            //Add to cache so it will be there next time.
            if (userPermCache != null) {
                userPermCache.add(new Integer(-1), anonyPermissions);
            }
        }
        //Combine permissions
        finalPermissions = new ForumPermissions(finalPermissions, anonyPermissions);

        //If they are a valid user, figure out "any user" permissions.
        if (isUser) {
            ForumPermissions specialUserPermissions = null;
            //Check for cache
            if (userPermCache != null) {
                specialUserPermissions = (ForumPermissions)userPermCache.get(new Integer(0));
            }
            //Otherwise, do our own lookup.
            if (specialUserPermissions == null) {
                specialUserPermissions = factory.getUserPermissions(0, id);
                //Add to cache so it will be there next time.
                if (userPermCache != null) {
                    userPermCache.add(new Integer(0), specialUserPermissions);
                }
            }
            //Combine permissions
            finalPermissions = new ForumPermissions(finalPermissions, specialUserPermissions);
        }

        //Step 2 -- get Permissions for all groups the user is in.
        int [] groups = ((DbProfileManager)factory.getProfileManager()).getUserGroups(userID);
        for (int i=0; i<groups.length; i++) {
            ForumPermissions groupPermissions = factory.getGroupPermissions(groups[i], id);
            finalPermissions = new ForumPermissions(finalPermissions, groupPermissions);
        }

        //Finally, add user to cache so it will be there next time.
        if (isUser && userPermCache != null) {
            userPermCache.add(new Integer(userID), finalPermissions);
        }

        return finalPermissions;
    }
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