overhauled histograms

Signed-off-by: Stephan Richter <s.richter@srsoftware.de>

poll/src/main/java/de/srsoftware/umbrella/poll/PollDb.java

@@ -11,7 +11,7 @@ import java.util.Map;
 public interface PollDb {
 	Collection<Poll> listPolls(UmbrellaUser user);
 
-	Poll.Evaluation loadEvaluation(String id);
+	Poll.Evaluation loadEvaluation(Poll poll);
 
 	Poll loadPoll(String id);
 

poll/src/main/java/de/srsoftware/umbrella/poll/PollModule.java

@@ -114,7 +114,7 @@ public class PollModule extends BaseHandler implements PollService {
 			}
 		}
 		var result = new HashMap<>(poll.toMap());
-		var evaluation = pollDb.loadEvaluation(poll.id());
+		var evaluation = pollDb.loadEvaluation(poll);
 		result.put(Field.EVALUATION,evaluation.toMap());
 		return sendContent(ex,result);
 	}

poll/src/main/java/de/srsoftware/umbrella/poll/SqliteDb.java

@@ -150,10 +150,10 @@ public class SqliteDb extends BaseDb implements PollDb {
 	}
 
 	@Override
-	public Poll.Evaluation loadEvaluation(String pollId) {
+	public Poll.Evaluation loadEvaluation(Poll poll) {
 		try {
-			var result = new Poll.Evaluation();
-			var rs = select(ALL).from(TABLE_SELECTIONS).where(POLL_ID,equal(pollId)).exec(db);
+			var result = new Poll.Evaluation(poll);
+			var rs = select(ALL).from(TABLE_SELECTIONS).where(POLL_ID,equal(poll.id())).exec(db);
 			while (rs.next()) result.count(rs);
 			rs.close();
 			return result;