Load groups recursive for user

bwreg-service/src/main/java/edu/kit/scc/webreg/service/GroupService.java

@@ -32,4 +32,6 @@ public interface GroupService extends BaseService<GroupEntity, Long> {
 
 	void removeUserGromGroup(UserEntity user, GroupEntity group);
 
+	Set<GroupEntity> findByUserWithParents(UserEntity user);
+
 }

bwreg-service/src/main/java/edu/kit/scc/webreg/service/impl/GroupServiceImpl.java

@@ -85,6 +85,23 @@ public class GroupServiceImpl extends BaseServiceImpl<GroupEntity, Long> impleme
 		return groupDao.findByUser(user);
 	}	
 
+	@Override
+	public Set<GroupEntity> findByUserWithParents(UserEntity user) {
+		Set<GroupEntity> groups = new HashSet<GroupEntity>(groupDao.findByUser(user));
+		Set<GroupEntity> targetGroups = new HashSet<GroupEntity>();
+		rollParents(targetGroups, groups, 0, 3);
+		return groups;
+	}	
+
+	private void rollParents(Set<GroupEntity> targetGroups, Set<GroupEntity> groups, int depth, int maxDepth) {
+		if (depth <= maxDepth) {
+			for (GroupEntity group : groups) {
+				rollParents(targetGroups, group.getParents(), depth + 1, maxDepth);
+				targetGroups.add(group);
+			}		
+		}
+	}
+	
 	@Override
 	protected BaseDao<GroupEntity, Long> getDao() {
 		return groupDao;

bwreg-webapp/src/main/java/edu/kit/scc/webreg/sec/AuthorizationBean.java

@@ -93,7 +93,8 @@ public class AuthorizationBean implements Serializable {
     	if (sessionManager.getRoleSetCreated() == null || 
     			(System.currentTimeMillis() - sessionManager.getRoleSetCreated()) > 5 * 60 * 1000L) {
 	    	start = System.currentTimeMillis();
-	    	List<GroupEntity> groupList = groupService.findByUser(user);
+	    	Set<GroupEntity> groupList = groupService.findByUserWithParents(user);
+	    	
 	    	sessionManager.setGroupString(groupsToString(groupList));
 	    	
 	    	for (GroupEntity g : groupList) {
@@ -267,9 +268,9 @@ public class AuthorizationBean implements Serializable {
 		return unregisteredServiceList;
 	}
 
-	private String groupsToString(List<GroupEntity> groupList) {
+	private String groupsToString(Set<GroupEntity> groups) {
 		StringBuilder sb = new StringBuilder();
-		for (GroupEntity group : groupList) {
+		for (GroupEntity group : groups) {
 			if (group instanceof HomeOrgGroupEntity &&  
 					((HomeOrgGroupEntity) group).getPrefix() != null) {
 				sb.append(((HomeOrgGroupEntity) group).getPrefix());