From ea828a88dc40f5764c93ebbcf34a0f97b49699f2 Mon Sep 17 00:00:00 2001
From: coderkun <coderkun@localhost>
Date: Thu, 15 May 2014 18:17:51 +0200
Subject: [PATCH] store the total amount of achievable XPs for a Questgroup in
 the database instead of calculating it every time (Issue #281)

---
 configs/AppConfig.inc                       |   2 +-
 controllers/QuestgroupsController.inc       |  10 +-
 controllers/SeminariesController.inc        |  44 ++-
 locale/de_DE/LC_MESSAGES/The Legend of Z.mo | Bin 14279 -> 14327 bytes
 locale/de_DE/LC_MESSAGES/The Legend of Z.po |  38 +--
 models/QuestgroupsModel.inc                 | 311 +++++++++-----------
 models/SeminariesModel.inc                  |   6 +-
 views/html/questgroups/questgroup.tpl       |   4 +-
 views/html/seminaries/calculatexps.tpl      |   0
 views/html/seminaries/seminary.tpl          |   5 +-
 10 files changed, 211 insertions(+), 209 deletions(-)
 create mode 100644 views/html/seminaries/calculatexps.tpl

diff --git a/configs/AppConfig.inc b/configs/AppConfig.inc
index e06e0ec5..8291a1f1 100644
--- a/configs/AppConfig.inc
+++ b/configs/AppConfig.inc
@@ -208,7 +208,7 @@
 			array('^users/([^/]+)/(edit|delete)/?$',					'users/$2/$1',			true),
 			array('^users/(?!(index|login|register|logout|manage|create|edit|delete))/?',	'users/user/$1',		true),
 			array('^seminaries/([^/]+)/(edit|delete)/?$',				'seminaries/$2/$1',			true),
-			array('^seminaries/(?!(index|create|edit|delete))/?',			'seminaries/seminary/$1',		true),
+			array('^seminaries/(?!(index|create|edit|delete|calculatexps))/?',	'seminaries/seminary/$1',		true),
 			array('^questgroups/([^/]+)/(create)/?$',				'questgroups/$2/$1',			true),
 			array('^questgroups/([^/]+)/([^/]+)/?$',				'questgroups/questgroup/$1/$2',		true),
 			array('^quests/([^/]+)/?$',						'quests/index/$1',			true),
diff --git a/controllers/QuestgroupsController.inc b/controllers/QuestgroupsController.inc
index 8eb03d38..43402ce1 100644
--- a/controllers/QuestgroupsController.inc
+++ b/controllers/QuestgroupsController.inc
@@ -113,10 +113,8 @@
 							}
 						}
 						
-						// Get cumulated data
-						$data = $this->Questgroups->getCumulatedDataForQuestgroup($group['id'], $character['id']);
-						$group['xps'] = $data['xps'];
-						$group['character_xps'] = $data['character_xps'];
+						// Get Character XPs
+						$group['character_xps'] = $this->Questgroups->getAchievedXPsForQuestgroup($group['id'], $character['id']);
 						
 						// Attach related Questgroups
 						$group['relatedQuestgroups'] = array();
@@ -125,6 +123,7 @@
 							if($this->Questgroups->hasCharacterEnteredQuestgroup($relatedQuestgroup['id'], $character['id'])) {
 								$group['relatedQuestgroups'][] = $this->Questgroups->getQuestgroupById($relatedQuestgroup['id']);
 							}
+							
 						}
 					}
 				}
@@ -133,9 +132,6 @@
 			// Get texts
 			$questgroupTexts = $this->Questgroups->getQuestgroupTexts($questgroup['id']);
 			
-			// Get Character XPs
-			$questgroup['character_xps'] = $this->Questgroups->getAchievedXPsForQuestgroup($questgroup['id'], $character['id']);
-			
 			// Media
 			$picture = null;
 			if(!is_null($questgroup['questgroupspicture_id']))
diff --git a/controllers/SeminariesController.inc b/controllers/SeminariesController.inc
index c4e72dd6..0c392a87 100644
--- a/controllers/SeminariesController.inc
+++ b/controllers/SeminariesController.inc
@@ -35,7 +35,8 @@
 			'seminary' => array('admin', 'moderator', 'user'),
 			'create' => array('admin', 'moderator'),
 			'edit' => array('admin', 'moderator', 'user'),
-			'delete' => array('admin', 'moderator', 'user')
+			'delete' => array('admin', 'moderator', 'user'),
+			'calculatexps' => array('admin', 'moderator', 'user')
 		);
 		/**
 		 * User seminary permissions
@@ -45,7 +46,8 @@
 		public $seminaryPermissions = array(
 			'seminary' => array('admin', 'moderator', 'user', 'guest'),
 			'edit' => array('admin'),
-			'delete' => array('admin')
+			'delete' => array('admin'),
+			'calculatexps' => array('admin', 'moderator')
 		);
 		
 		
@@ -134,10 +136,8 @@
 						$questgroup['text'] = \hhu\z\Utils::shortenString($text, 100, 120).' …';
 					}
 					
-					// Get cumulated data
-					$data = $this->Questgroups->getCumulatedDataForQuestgroup($questgroup['id'], $character['id']);
-					$questgroup['xps'] = $data['xps'];
-					$questgroup['character_xps'] = $data['character_xps'];
+					// Get Character XPs
+					$questgroup['character_xps'] = $this->Questgroups->getAchievedXPsForQuestgroup($questgroup['id'], $character['id']);
 					
 					// Get Media
 					$questgroup['picture'] = null;
@@ -264,6 +264,38 @@
 			$this->set('seminary', $seminary);
 		}
 		
+		
+		/**
+		 * Action: calculatexps.
+		 * 
+		 * (Re-) Calculate the amount of achievable XPs for a Seminary.
+		 * 
+		 * @throws	IdNotFoundException
+		 * @param	string	$seminaryUrl	URL-Title of a Seminary
+		 */
+		public function calculatexps($seminaryUrl)
+		{
+			// Get Seminary
+			$seminary = $this->Seminaries->getSeminaryByUrl($seminaryUrl);
+			
+			// Questgrouphierarchy and Questgroups
+			$questgroupshierarchy = $this->Questgroupshierarchy->getHierarchyOfSeminary($seminary['id']);
+			foreach($questgroupshierarchy as &$hierarchy)
+			{
+				// Get Questgroups
+				$hierarchy['questgroups'] = $this->Questgroups->getQuestgroupsForHierarchy($hierarchy['id']);
+				foreach($hierarchy['questgroups'] as &$questgroup)
+				{
+					// Calculate achievable XPs
+					$this->Questgroups->calculateXPsForQuestgroup($questgroup['id']);
+				}
+			}
+			
+			
+			// Redirect to Questgroup
+			$this->redirect($this->linker->link(array('seminary', $seminary['url']), 1));
+		}
+		
 	}
 
 ?>
diff --git a/locale/de_DE/LC_MESSAGES/The Legend of Z.mo b/locale/de_DE/LC_MESSAGES/The Legend of Z.mo
index 19c4f36173fce5b3104977ac904fdcd6a1021878..82b2b8be1d027b7777ac4a74855e11a0d68db122 100644
GIT binary patch
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diff --git a/locale/de_DE/LC_MESSAGES/The Legend of Z.po b/locale/de_DE/LC_MESSAGES/The Legend of Z.po
index be701aa7..709e2acd 100644
--- a/locale/de_DE/LC_MESSAGES/The Legend of Z.po	
+++ b/locale/de_DE/LC_MESSAGES/The Legend of Z.po	
@@ -1,8 +1,8 @@
 msgid ""
 msgstr ""
 "Project-Id-Version: The Legend of Z\n"
-"POT-Creation-Date: 2014-05-07 21:52+0100\n"
-"PO-Revision-Date: 2014-05-07 21:52+0100\n"
+"POT-Creation-Date: 2014-05-15 18:15+0100\n"
+"PO-Revision-Date: 2014-05-15 18:15+0100\n"
 "Last-Translator: \n"
 "Language-Team: \n"
 "Language: de_DE\n"
@@ -143,7 +143,7 @@ msgstr "Leider falsch!"
 msgid "Error"
 msgstr "Fehler"
 
-#: views/html/achievements/index.tpl:9 views/html/seminarymenu/index.tpl:5
+#: views/html/achievements/index.tpl:9 views/html/seminarymenu/index.tpl:6
 msgid "Achievements"
 msgstr "Achievements"
 
@@ -193,7 +193,7 @@ msgstr "Persönlicher Fortschritt: %d%%"
 #: views/html/achievements/index.tpl:58
 #: views/html/charactergroups/group.tpl:32
 #: views/html/charactergroups/managegroup.tpl:20
-#: views/html/characters/character.tpl:46 views/html/seminarybar/index.tpl:7
+#: views/html/characters/character.tpl:46 views/html/seminarybar/index.tpl:8
 msgid "Rank"
 msgstr "Platz"
 
@@ -202,7 +202,7 @@ msgstr "Platz"
 msgid "You achieved %d of %d Achievements so far"
 msgstr "Du hast bislang %d von insgesamt %d Achievements erreicht"
 
-#: views/html/achievements/index.tpl:65 views/html/seminarybar/index.tpl:28
+#: views/html/achievements/index.tpl:65 views/html/seminarybar/index.tpl:29
 #, php-format
 msgid "achieved at: %s"
 msgstr "erhalten am: %s"
@@ -226,7 +226,7 @@ msgstr "Spiele weiter, um diesen geheimen Erfolg freizuschalten"
 #: views/html/charactergroupsquests/edit.tpl:8
 #: views/html/charactergroupsquests/manage.tpl:8
 #: views/html/charactergroupsquests/quest.tpl:8
-#: views/html/characters/character.tpl:95 views/html/seminarymenu/index.tpl:4
+#: views/html/characters/character.tpl:95 views/html/seminarymenu/index.tpl:5
 msgid "Character Groups"
 msgstr "Gruppen"
 
@@ -428,8 +428,8 @@ msgstr "%s-Gruppe verwalten"
 #: views/html/characters/character.tpl:83
 #: views/html/characters/character.tpl:89
 #: views/html/characters/character.tpl:103 views/html/quests/index.tpl:37
-#: views/html/seminaries/index.tpl:29 views/html/seminarybar/index.tpl:6
-#: views/html/seminarybar/index.tpl:42
+#: views/html/seminaries/index.tpl:29 views/html/seminarybar/index.tpl:7
+#: views/html/seminarybar/index.tpl:43
 #, php-format
 msgid "%d XPs"
 msgstr "%d XP"
@@ -450,13 +450,13 @@ msgstr "Mitglied"
 #: views/html/characters/character.tpl:13 views/html/characters/delete.tpl:10
 #: views/html/characters/edit.tpl:11 views/html/characters/edit.tpl:13
 #: views/html/characters/index.tpl:9 views/html/characters/manage.tpl:8
-#: views/html/characters/register.tpl:8 views/html/seminarymenu/index.tpl:3
+#: views/html/characters/register.tpl:8 views/html/seminarymenu/index.tpl:4
 #: views/html/users/user.tpl:27
 msgid "Characters"
 msgstr "Charaktere"
 
 #: views/html/charactergroups/group.tpl:53
-#: views/html/charactergroups/groupsgroup.tpl:35
+#: views/html/charactergroups/groupsgroup.tpl:36
 #, php-format
 msgid "%s-Quests"
 msgstr "%squests"
@@ -476,7 +476,7 @@ msgstr "XP"
 msgid "Create new %s Character group"
 msgstr "Neue %s-Gruppe"
 
-#: views/html/charactergroups/groupsgroup.tpl:38
+#: views/html/charactergroups/groupsgroup.tpl:39
 #, php-format
 msgid "Create new %s-Quest"
 msgstr "Neue %s-Quest erstellen"
@@ -664,7 +664,7 @@ msgstr "Fortschritt"
 #: views/html/characters/character.tpl:38
 #: views/html/characters/character.tpl:77
 #: views/html/characters/character.tpl:83
-#: views/html/characters/character.tpl:89 views/html/seminarybar/index.tpl:42
+#: views/html/characters/character.tpl:89 views/html/seminarybar/index.tpl:43
 #: views/html/users/user.tpl:41
 msgid "Level"
 msgstr "Level"
@@ -677,7 +677,7 @@ msgstr "Meilensteine"
 msgid "Ranking"
 msgstr "Ranking"
 
-#: views/html/characters/character.tpl:112 views/html/seminarybar/index.tpl:14
+#: views/html/characters/character.tpl:112 views/html/seminarybar/index.tpl:15
 msgid "Last Quest"
 msgstr "Letzter Speicherpunkt"
 
@@ -843,7 +843,7 @@ msgid "Introduction"
 msgstr "Einführung"
 
 #: views/html/library/index.tpl:9 views/html/library/topic.tpl:8
-#: views/html/seminarymenu/index.tpl:6
+#: views/html/seminarymenu/index.tpl:7
 msgid "Library"
 msgstr "Bibliothek"
 
@@ -957,7 +957,7 @@ msgstr "Quest"
 msgid "Go on"
 msgstr "Fortfahren"
 
-#: views/html/quests/quest.tpl:134 views/html/seminaries/seminary.tpl:35
+#: views/html/quests/quest.tpl:134 views/html/seminaries/seminary.tpl:36
 msgid "Let’s go"
 msgstr "Auf ins Abenteuer!"
 
@@ -1013,11 +1013,15 @@ msgstr "Dein Charakter „%s“ wurde noch nicht aktiviert"
 msgid "Show Quests"
 msgstr "Quests anzeigen"
 
-#: views/html/seminarybar/index.tpl:21
+#: views/html/seminaries/seminary.tpl:12
+msgid "Recalculate XPs"
+msgstr "XP neuberechnen"
+
+#: views/html/seminarybar/index.tpl:22
 msgid "Last Achievement"
 msgstr "Letztes Achievement"
 
-#: views/html/seminarybar/index.tpl:46
+#: views/html/seminarybar/index.tpl:47
 #, php-format
 msgid "Show %s-Profile"
 msgstr "%s-Profil anzeigen"
diff --git a/models/QuestgroupsModel.inc b/models/QuestgroupsModel.inc
index 111fd967..498fe9d9 100644
--- a/models/QuestgroupsModel.inc
+++ b/models/QuestgroupsModel.inc
@@ -61,7 +61,7 @@
 			if(is_null($parentQuestgroupId))
 			{
 				$questgroups = $this->db->query(
-					'SELECT questgroups.id, questgroups_questgroupshierarchy.questgroupshierarchy_id, questgroups_questgroupshierarchy.pos, questgroups.title, questgroups.url, questgroups.questgroupspicture_id '.
+					'SELECT questgroups.id, questgroups_questgroupshierarchy.questgroupshierarchy_id, questgroups_questgroupshierarchy.pos, questgroups.title, questgroups.url, questgroups.questgroupspicture_id, questgroups.achievable_xps '.
 					'FROM questgroups_questgroupshierarchy '.
 					'INNER JOIN questgroups ON questgroups.id = questgroups_questgroupshierarchy.questgroup_id '.
 					'WHERE questgroups_questgroupshierarchy.questgroupshierarchy_id = ? AND questgroups_questgroupshierarchy.parent_questgroup_id IS NULL '.
@@ -73,7 +73,7 @@
 			else
 			{
 				$questgroups = $this->db->query(
-					'SELECT questgroups.id, questgroups_questgroupshierarchy.questgroupshierarchy_id, questgroups_questgroupshierarchy.pos, questgroups.title, questgroups.url, questgroups.questgroupspicture_id '.
+					'SELECT questgroups.id, questgroups_questgroupshierarchy.questgroupshierarchy_id, questgroups_questgroupshierarchy.pos, questgroups.title, questgroups.url, questgroups.questgroupspicture_id, questgroups.achievable_xps '.
 					'FROM questgroups_questgroupshierarchy '.
 					'INNER JOIN questgroups ON questgroups.id = questgroups_questgroupshierarchy.questgroup_id '.
 					'WHERE questgroups_questgroupshierarchy.questgroupshierarchy_id = ? AND questgroups_questgroupshierarchy.parent_questgroup_id = ? '.
@@ -98,7 +98,7 @@
 		public function getQuestgroupsForSeminary($seminaryId)
 		{
 			return $this->db->query(
-				'SELECT id, title, url '.
+				'SELECT id, title, url, achievable_xps '.
 				'FROM questgroups '.
 				'WHERE seminary_id = ? '.
 				'ORDER BY title ASC',
@@ -118,7 +118,7 @@
 		public function getQuestgroupById($questgroupId)
 		{
 			$data = $this->db->query(
-				'SELECT id, title, url, questgroupspicture_id '.
+				'SELECT id, title, url, questgroupspicture_id, achievable_xps '.
 				'FROM questgroups '.
 				'WHERE questgroups.id = ?',
 				'i',
@@ -144,7 +144,7 @@
 		public function getQuestgroupByUrl($seminaryId, $questgroupUrl)
 		{
 			$data = $this->db->query(
-				'SELECT id, title, url, questgroupspicture_id '.
+				'SELECT id, title, url, questgroupspicture_id, achievable_xps '.
 				'FROM questgroups '.
 				'WHERE seminary_id = ? AND url = ?',
 				'is',
@@ -428,113 +428,6 @@
 		
 		
 		/**
-		 * Calculate cumulated data for a Questgroup, its
-		 * sub-Questgroups and all its Quests.
-		 * 
-		 * @param	int	$questgroupId		ID of Questgroup
-		 * @param	int	$characterId		ID of Character
-		 * @param	array	$calculatedQuests	IDs of already calculated Quests
-		 * @return	array				Cumulated data for Questgroup
-		 */
-		public function getCumulatedDataForQuestgroup($questgroupId, $characterId=null, &$calculatedQuests=array())
-		{
-			// Cumulated data
-			$data = array(
-				'xps'		=> 0,
-				'character_xps'	=> 0
-			);
-			
-			// Current Questgroup
-			$questgroup = $this->getQuestgroupById($questgroupId);
-			
-			// Quests of current Questgroup
-			$quest = $this->Quests->getFirstQuestOfQuestgroup($questgroup['id']);
-			if(!is_null($quest))
-			{
-				$questData = $this->getCumulatedDataForQuest($quest, $characterId, $calculatedQuests);
-				$data['xps'] += $questData['xps'];
-				$data['character_xps'] += $questData['character_xps'];
-			}
-			
-			// XPs of child Questgroups
-			$questgroupHierarchy = $this->Questgroupshierarchy->getHierarchyForQuestgroup($questgroup['id']);
-			if(!empty($questgroupHierarchy))
-			{
-				$childQuestgroupshierarchy = $this->Questgroupshierarchy->getChildQuestgroupshierarchy($questgroupHierarchy['id']);
-				foreach($childQuestgroupshierarchy as &$hierarchy)
-				{
-					$questgroups = $this->getQuestgroupsForHierarchy($hierarchy['id'], $questgroup['id']);
-					foreach($questgroups as &$questgroup)
-					{
-						$childData = $this->getCumulatedDataForQuestgroup($questgroup['id'], $characterId, $calculatedQuests);
-						$data['xps'] += $childData['xps'];
-						$data['character_xps'] += $childData['character_xps'];
-					}
-				}
-			}
-			
-			
-			// Return cumulated data
-			return $data;
-		}
-		
-		
-		/**
-		 * Calculate cumulated data of the given Quest, its following
-		 * Quests and its related Questgroups.
-		 * 
-		 * @param	array	$quest			Quest data
-		 * @param	int	$characterId		ID of Character
-		 * @param	array	$calculatedQuests	IDs of already calculated Quests
-		 * @return	array				Cumulated data for Quest
-		 */
-		public function getCumulatedDataForQuest($quest, $characterId=null, &$calculatedQuests=array())
-		{
-			// Cumulated data
-			$data = array(
-				'xps'		=> $quest['xps'],
-				'character_xps'	=> (!is_null($characterId) && $this->Quests->hasCharacterSolvedQuest($quest['id'], $characterId)) ? $quest['xps'] : 0
-			);
-			
-			// Related Questgroups
-			$relatedQuestgroups = $this->getRelatedQuestsgroupsOfQuest($quest['id']);
-			foreach($relatedQuestgroups as &$relatedQuestgroup)
-			{
-				$relatedData = $this->getCumulatedDataForQuestgroup($relatedQuestgroup['id'], $characterId, $calculatedQuests);
-				$data['xps'] += $relatedData['xps'];
-				$data['character_xps'] += $relatedData['character_xps'];
-			}
-			
-			// Next Quests
-			$nextQuests = $this->Quests->getNextQuests($quest['id']);
-			$allNextData = array(
-				'xps'		=> array(0),
-				'character_xps'	=> array(0),
-			);
-			foreach($nextQuests as &$nextQuest)
-			{
-				if(!array_key_exists($nextQuest['id'], $calculatedQuests))
-				{
-					$nextData = $this->getCumulatedDataForQuest($nextQuest, $characterId, $calculatedQuests);
-					$calculatedQuests[$nextQuest['id']] = array(
-						'xps'		=> $nextData['xps'],
-						'character_xps'	=> $nextData['character_xps']
-					);
-				}
-				
-				$allNextData['xps'][] = $calculatedQuests[$nextQuest['id']]['xps'];
-				$allNextData['character_xps'][] = $calculatedQuests[$nextQuest['id']]['character_xps'];
-			}
-			$data['xps'] += max($allNextData['xps']);
-			$data['character_xps'] += max($allNextData['character_xps']);
-			
-			
-			// Return cumulated data
-			return $data;
-		}
-		
-		
-				/**
 		 * Summarize XPs of all Quests for a Questgroup and its
 		 * sub-Questgroups solved by a Character.
 		 * 
@@ -544,75 +437,29 @@
 		 */
 		public function getAchievedXPsForQuestgroup($questgroupId, $characterId)
 		{
-			// Sum of XPs
-			$xps = 0;
+			// Questgroup
+			$xps = $this->_getAchievedXPsForQuestgroup($questgroupId, $characterId);
 			
-			// Current Questgroup
-			$questgroup = $this->getQuestgroupById($questgroupId);
-			
-			// Quests of current Questgroup
-			$quest = $this->Quests->getFirstQuestOfQuestgroup($questgroup['id']);
-			if(!is_null($quest)) {
-				$xps += $this->getAchievedXPsForQuest($quest, $characterId);
+			// Related Questgroups
+			foreach($this->getRelatedQuestsgroupsOfQuestgroup($questgroupId) as $relatedQuestgroup) {
+				$xps += $this->getAchievedXPsForQuestgroup($relatedQuestgroup['id'], $characterId);
 			}
 			
 			// XPs of child Questgroups
-			$questgroupHierarchy = $this->Questgroupshierarchy->getHierarchyForQuestgroup($questgroup['id']);
-			if(empty($questgroupHierarchy)) {
-				return $xps;
-			}
-			$childQuestgroupshierarchy = $this->Questgroupshierarchy->getChildQuestgroupshierarchy($questgroupHierarchy['id']);
-			foreach($childQuestgroupshierarchy as &$hierarchy)
+			$questgroupHierarchy = $this->Questgroupshierarchy->getHierarchyForQuestgroup($questgroupId);
+			if(!empty($questgroupHierarchy))
 			{
-				$questgroups = $this->getQuestgroupsForHierarchy($hierarchy['id'], $questgroup['id']);
-				foreach($questgroups as &$questgroup) {
-					$xps += $this->getAchievedXPsForQuestgroup($questgroup['id'], $characterId);
-				}
-			}
-			
-			
-			// Return summarized XPs
-			return $xps;
-		}
-		
-		
-		/**
-		 * Summarize XPs of the given Quest, its following Quests and
-		 * its related Questgroups solved by a Character.
-		 * 
-		 * @param	int	$quest		Quest to summarize XPs for
-		 * @param	int	$characterId	ID of Character
-		 * @return	int			Sum of XPs
-		 */
-		public function getAchievedXPsForQuest($quest, $characterId)
-		{
-			$xps = 0;
-			
-			// XPs for the given Quest
-			if($this->Quests->hasCharacterSolvedQuest($quest['id'], $characterId))
-			{
-				$xps += $quest['xps'];
-				
-				// Next Quests
-				$nextQuests = $this->Quests->getNextQuests($quest['id']);
-				foreach($nextQuests as &$nextQuest)
+				$childQuestgroupshierarchy = $this->Questgroupshierarchy->getChildQuestgroupshierarchy($questgroupHierarchy['id']);
+				foreach($childQuestgroupshierarchy as &$hierarchy)
 				{
-					if($this->Quests->hasCharacterEnteredQuest($nextQuest['id'], $characterId))
-					{
-						$xps += $this->getAchievedXPsForQuest($nextQuest, $characterId);
-						break;
+					$childQuestgroups = $this->getQuestgroupsForHierarchy($hierarchy['id'], $questgroupId);
+					foreach($childQuestgroups as &$childQuestgroup) {
+						$xps += $this->getAchievedXPsForQuestgroup($childQuestgroup['id'], $characterId);
 					}
 				}
 			}
 			
-			// Related Questgroups
-			$relatedQuestgroups = $this->getRelatedQuestsgroupsOfQuest($quest['id']);
-			foreach($relatedQuestgroups as &$relatedQuestgroup) {
-				$xps += $this->getAchievedXPsForQuestgroup($relatedQuestgroup['id'], $characterId);
-			}
 			
-			
-			// Return summarized XPs
 			return $xps;
 		}
 		
@@ -766,6 +613,130 @@
 			);
 		}
 		
+		
+		/**
+		 * Calculate the total amount of achievable XPs for a
+		 * Questgroup, its sub-Questgroups, related Questgroups etc. and
+		 * store this value in the database.
+		 * 
+		 * @param	int	$questgroupId		ID of Questgroup
+		 * @param	array	$calculatedQuests	Already calculated Quests
+		 * @return	int				Sum of calculated XPs
+		 */
+		public function calculateXPsForQuestgroup($questgroupId, &$calculatedQuests=array())
+		{
+			$xps = 0;
+			
+			// Quests
+			$quest = $this->Quests->getFirstQuestOfQuestgroup($questgroupId);
+			if(!is_null($quest)) {
+				$xps = $this->_calculateXPsForQuestgroup($quest);
+			}
+			
+			// Child Questgroups
+			$questgroupHierarchy = $this->Questgroupshierarchy->getHierarchyForQuestgroup($questgroupId);
+			if(!empty($questgroupHierarchy))
+			{
+				$childQuestgroupshierarchy = $this->Questgroupshierarchy->getChildQuestgroupshierarchy($questgroupHierarchy['id']);
+				foreach($childQuestgroupshierarchy as &$hierarchy)
+				{
+					$questgroups = $this->getQuestgroupsForHierarchy($hierarchy['id'], $questgroupId);
+					foreach($questgroups as &$questgroup) {
+						$xps += $this->calculateXPsForQuestgroup($questgroup['id'], $calculatedQuests);
+					}
+				}
+			}
+			
+			// Save XPs
+			$this->setXPsForQuestgroup($questgroupId, $xps);
+			
+			
+			return $xps;
+		}
+		
+		
+		
+		
+		/**
+		 * Get the sum of XPs of Quests for a Questgroup solved by a
+		 * Character.
+		 * 
+		 * @param	int	$questgroupId	ID of Questgroup
+		 * @param	int	$characterId	ID of Character
+		 * @return	int			Sum of XPs of Quests
+		 */
+		private function _getAchievedXPsForQuestgroup($questgroupId, $characterId)
+		{
+			$data = $this->db->query(
+				'SELECT COALESCE(SUM(quests.xps),0) AS xps '.
+				'FROM quests '.
+				'INNER JOIN quests_characters ON quests_characters.quest_id = quests.id AND quests_characters.character_id = ? AND quests_characters.status = ? '.
+				'WHERE quests.questgroup_id = ?',
+				'iii',
+				$characterId,
+				\hhu\z\models\QuestsModel::QUEST_STATUS_SOLVED,
+				$questgroupId
+			);
+			if(!empty($data)) {
+				return $data[0]['xps'];
+			}
+		}
+		
+		
+		/*
+		 * Calculate the total amount of achievable XPs for a Quest and
+		 * its following Quests by choosing the path with the highest
+		 * amount of XPs.
+		 * 
+		 * @param	int	$quest			Quest data
+		 * @param	array	$calculatedQuests	Already calculated Quests
+		 * @return	int				Sum of calculated XPs
+		 */
+		private function _calculateXPsForQuestgroup($quest, &$calculatedQuests=array())
+		{
+			$xps = $quest['xps'];
+			
+			// Related Questgroups
+			$relatedQuestgroups = $this->getRelatedQuestsgroupsOfQuest($quest['id']);
+			foreach($relatedQuestgroups as &$relatedQuestgroup) {
+				$xps += $this->calculateXPsForQuestgroup($relatedQuestgroup['id'], $calculatedQuests);
+			}
+			
+			// Next Quests
+			$nextQuests = $this->Quests->getNextQuests($quest['id']);
+			$allNextXPs = array(0);
+			foreach($nextQuests as &$nextQuest)
+			{
+				if(!array_key_exists($nextQuest['id'], $calculatedQuests)) {
+					$calculatedQuests[$nextQuest['id']] = $this->_calculateXPsForQuestgroup($nextQuest, $calculatedQuests);
+				}
+				$allNextXPs[] = $calculatedQuests[$nextQuest['id']];
+			}
+			$xps += max($allNextXPs);
+			
+			
+			return $xps;
+		}
+		
+		
+		/**
+		 * Set achievable XPs for a Questgroup.
+		 * 
+		 * @param	int	$questgroupId	ID of Questgroup
+		 * @param	int	$xps		XPs to set
+		 */
+		private function setXPsForQuestgroup($questgroupId, $xps)
+		{
+			$this->db->query(
+				'UPDATE questgroups '.
+				'SET achievable_xps = ? '.
+				'WHERE id = ?',
+				'ii',
+				$xps,
+				$questgroupId
+			);
+		}
+		
 	}
 
 ?>
diff --git a/models/SeminariesModel.inc b/models/SeminariesModel.inc
index 494aadc3..e31cdce7 100644
--- a/models/SeminariesModel.inc
+++ b/models/SeminariesModel.inc
@@ -122,10 +122,8 @@
 			{
 				// Get Questgroups
 				$questgroups = $this->Questgroups->getQuestgroupsForHierarchy($hierarchy['id']);
-				foreach($questgroups as &$questgroup)
-				{
-					$data = $this->Questgroups->getCumulatedDataForQuestgroup($questgroup['id']);
-					$xps += $data['xps'];
+				foreach($questgroups as &$questgroup) {
+					$xps += $questgroup['achievable_xps'];
 				}
 			}
 			
diff --git a/views/html/questgroups/questgroup.tpl b/views/html/questgroups/questgroup.tpl
index aadc169e..d296deef 100644
--- a/views/html/questgroups/questgroup.tpl
+++ b/views/html/questgroups/questgroup.tpl
@@ -36,9 +36,9 @@
 		<div class="qgprogress cf">
 			<p class="xpinfo">Fortschritt:</p>
 			<div class="xpbar">
-				<span style="width:<?=round($group['character_xps']/$group['xps']*100)?>%"></span>
+				<span style="width:<?=round($group['character_xps']/$group['achievable_xps']*100)?>%"></span>
 			</div>
-			<p class="xpnumeric"><?=$group['character_xps']?> / <?=$group['xps']?> XP</p>
+			<p class="xpnumeric"><?=$group['character_xps']?> / <?=$group['achievable_xps']?> XP</p>
 		</div>
 		<?php foreach($group['relatedQuestgroups'] as &$relatedGroup) : ?>
 		<div class="qghidden">
diff --git a/views/html/seminaries/calculatexps.tpl b/views/html/seminaries/calculatexps.tpl
new file mode 100644
index 00000000..e69de29b
diff --git a/views/html/seminaries/seminary.tpl b/views/html/seminaries/seminary.tpl
index f85af665..5b757e34 100644
--- a/views/html/seminaries/seminary.tpl
+++ b/views/html/seminaries/seminary.tpl
@@ -9,6 +9,7 @@
 	<?php if(in_array('admin', \hhu\z\controllers\SeminaryController::$character['characterroles'])) : ?><li><a href="<?=$linker->link('edit', 3)?>"><?=_('Edit seminary')?></a></li><?php endif ?>
 	<?php if(in_array('admin', \hhu\z\controllers\SeminaryController::$character['characterroles'])) : ?><li><a href="<?=$linker->link('delete', 3)?>"><?=_('Delete seminary')?></a></li><?php endif ?>
 	<?php if(count(array_intersect(array('admin','moderator'), \hhu\z\controllers\SeminaryController::$character['characterroles'])) > 0) : ?><li><a href="<?=$linker->link(array('quests','index',$seminary['url']))?>"><?=_('Show Quests')?></a></li><?php endif ?>
+	<?php if(count(array_intersect(array('admin','moderator'), \hhu\z\controllers\SeminaryController::$character['characterroles'])) > 0) : ?><li><a href="<?=$linker->link(array('calculatexps',$seminary['url']),1)?>"><?=_('Recalculate XPs')?></a></li><?php endif ?>
 </nav>
 <?php endif ?>
 <p><?=\hhu\z\Utils::t($seminary['description'])?></p>
@@ -25,9 +26,9 @@
 			<a href="<?=$linker->link(array('questgroups','questgroup',$seminary['url'],$group['url']))?>"><?=$group['title']?></a></p>
 			<div class="cf">
 				<div class="xpbar">
-					<span style="width:<?=round($group['character_xps']*100/$group['xps'])?>%"></span>
+					<span style="width:<?=round($group['character_xps']*100/$group['achievable_xps'])?>%"></span>
 				</div>
-				<p class="xpnumeric"><?=$group['character_xps']?> / <?=$group['xps']?> XP</p>
+				<p class="xpnumeric"><?=$group['character_xps']?> / <?=$group['achievable_xps']?> XP</p>
 			</div>
 			<?php if(array_key_exists('text', $group)) : ?>
 			<p><?=$group['text']?></p>