[export] add an export 'count activity' and first filters

- reason aggregator
- reason filter
- count activity export

Export/Export/CountActivity.php

@@ -0,0 +1,77 @@
+<?php
+
+/*
+ * Copyright (C) 2015 Champs-Libres <info@champs-libres.coop>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+namespace Chill\ActivityBundle\Export\Export;
+
+use Chill\MainBundle\Export\ExportInterface;
+use Doctrine\ORM\Query\Expr\Join;
+use Doctrine\ORM\QueryBuilder;
+
+/**
+ * 
+ *
+ * @author Julien Fastré <julien.fastre@champs-libres.coop>
+ */
+class CountActivity implements ExportInterface
+{
+    
+    public function buildForm(\Symfony\Component\Form\FormBuilderInterface $builder)
+    {
+        throw new \LogicException('This export does not requires a form.');
+    }
+
+    public function getDescription()
+    {
+        return "Count activities";
+    }
+
+    public function getTitle()
+    {
+        return "Count activities";
+    }
+
+    public function getType()
+    {
+        return 'activity';
+    }
+
+    public function initiateQuery(QueryBuilder $qb, array $requiredModifiers)
+    {
+        $qb->select('COUNT(activity.id) as export_count_activity')
+                ->from('ChillActivityBundle:Activity', 'activity')
+                ;
+        
+        if (in_array('person', $requiredModifiers)) {
+            $qb->join('activity.person', 'person');
+        }
+        
+        return $qb;
+    }
+
+    public function hasForm()
+    {
+        return false;
+    }
+    
+    public function supportsModifiers()
+    {
+        return array('person', 'activity');
+    }
+
+}