/**
* Utility helper for implementing getInterestedGroups() that returns a single-member set with the
* group stored in data1.
*
* @param block
* @return
*/
protected Set<Group> getData1GroupAsSet(Block block) {
Group group;
try {
group = EJBUtil.lookupGuid(em, Group.class, block.getData1AsGuid());
} catch (NotFoundException e) {
throw new RuntimeException(e);
}
return Collections.singleton(group);
}
protected User getData1User(Block block) {
User user;
try {
user = EJBUtil.lookupGuid(em, User.class, block.getData1AsGuid());
} catch (NotFoundException e) {
throw new RuntimeException("invalid user in data1 of " + block, e);
}
return user;
}
/**
* Utility helper for implementing getInterestedUsers() that gets everyone in the group identified
* by the group id in data1.
*
* @param block
* @return
*/
protected final Set<User> getUsersWhoCareAboutData1Group(Block block) {
Group group;
try {
group = EJBUtil.lookupGuid(em, Group.class, block.getData1AsGuid());
} catch (NotFoundException e) {
throw new RuntimeException("invalid group in data1 of " + block, e);
}
Set<User> groupMembers = groupSystem.getUserMembers(SystemViewpoint.getInstance(), group);
return groupMembers;
}