From 0c9d870c5810f05170045ad2776e837e3681facc Mon Sep 17 00:00:00 2001
From: Paul-Christian Volkmer <paul-christian.volkmer@mni.thm.de>
Date: Mon, 13 May 2013 15:13:57 +0200
Subject: [PATCH] Added inner classes to be used with in app feedback storage
and handling
These classes could be used to replace methods from DAO class.
---
.../thm/arsnova/services/FeedbackService.java | 85 ++++++++++++++++++-
1 file changed, 82 insertions(+), 3 deletions(-)
diff --git a/src/main/java/de/thm/arsnova/services/FeedbackService.java b/src/main/java/de/thm/arsnova/services/FeedbackService.java
index 53a0ee4f7..21e808ce9 100644
--- a/src/main/java/de/thm/arsnova/services/FeedbackService.java
+++ b/src/main/java/de/thm/arsnova/services/FeedbackService.java
@@ -19,7 +19,8 @@
package de.thm.arsnova.services;
-import java.util.HashSet;
+import java.util.Date;
+import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Set;
@@ -128,8 +129,8 @@ public class FeedbackService implements IFeedbackService {
this.server.reportDeletedFeedback(e.getKey(), e.getValue());
}
}
- for(String session : allAffectedSessions) {
- this.server.reportUpdatedFeedbackForSession(session);
+ for (String session : allAffectedSessions) {
+ this.server.reportUpdatedFeedbackForSession(session);
}
}
@@ -138,4 +139,82 @@ public class FeedbackService implements IFeedbackService {
public final Integer getMyFeedback(final String keyword, final User user) {
return this.databaseDao.getMyFeedback(keyword, user);
}
+
+ private static class FeedbackStorageObject {
+ private int value;
+ private Date timestamp;
+
+ public FeedbackStorageObject(int initValue) {
+ this.value = initValue;
+ this.timestamp = new Date();
+ }
+
+ public int getValue() {
+ return value;
+ }
+ public Date getTimestamp() {
+ return timestamp;
+ }
+ }
+
+ private static class FeedbackStorage {
+ private Map<String, Map<String, FeedbackStorageObject>> data;
+
+ public Feedback getFeedback(String keyword) {
+ int a = 0;
+ int b = 0;
+ int c = 0;
+ int d = 0;
+
+ if (data.get(keyword) == null) {
+ return new Feedback(0, 0, 0, 0);
+ }
+
+ for (FeedbackStorageObject fso : data.get(keyword).values()) {
+ switch (fso.getValue()) {
+ case 0:
+ a++;
+ break;
+ case 1:
+ b++;
+ break;
+ case 2:
+ c++;
+ break;
+ case 3:
+ d++;
+ break;
+ }
+ }
+
+ return new Feedback(a, b, c, d);
+ }
+
+ public boolean saveFeedback(String keyword, int value, User user) {
+ if (data.get(keyword) == null) {
+ data.put(keyword, new HashMap<String, FeedbackStorageObject>());
+ }
+ data.get(keyword).put(user.getUsername(), new FeedbackStorageObject(value));
+ return true;
+ }
+
+ public void cleanFeedbackVotes(int cleanupFeedbackDelay) {
+ for (String keyword : data.keySet()) {
+ this.cleanSessionFeedbackVotes(keyword, cleanupFeedbackDelay);
+ }
+ }
+
+ private void cleanSessionFeedbackVotes(String keyword, int cleanupFeedbackDelay) {
+ final long timelimitInMillis = 60000 * (long) cleanupFeedbackDelay;
+ final long maxAllowedTimeInMillis = System.currentTimeMillis() - timelimitInMillis;
+
+ Map<String, FeedbackStorageObject> sessionFeedbacks = data.get(keyword);
+
+ for ( FeedbackStorageObject fso : sessionFeedbacks.values() ) {
+ if (fso.getTimestamp().getTime() < maxAllowedTimeInMillis) {
+ sessionFeedbacks.remove(fso);
+ }
+ }
+ }
+ }
}
--
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