Move related event things in Event folder

src/Wallabag/CoreBundle/Event/Subscriber/TablePrefixSubscriber.php

@@ -0,0 +1,51 @@
+<?php
+
+namespace Wallabag\CoreBundle\Event\Subscriber;
+
+use Doctrine\Common\EventSubscriber;
+use Doctrine\ORM\Event\LoadClassMetadataEventArgs;
+use Doctrine\ORM\Mapping\ClassMetadataInfo;
+
+/**
+ * Puts a prefix to each table.
+ * This way were used instead of using the built-in strategy from Doctrine, using `naming_strategy`
+ * Because it conflicts with the DefaultQuoteStrategy (that espace table name, like user for Postgres)
+ * see #1498 for more detail.
+ *
+ * Solution from :
+ *      - http://stackoverflow.com/a/23860613/569101
+ *      - http://doctrine-orm.readthedocs.org/en/latest/reference/namingstrategy.html
+ */
+class TablePrefixSubscriber implements EventSubscriber
+{
+    protected $prefix = '';
+
+    public function __construct($prefix)
+    {
+        $this->prefix = (string) $prefix;
+    }
+
+    public function getSubscribedEvents()
+    {
+        return ['loadClassMetadata'];
+    }
+
+    public function loadClassMetadata(LoadClassMetadataEventArgs $args)
+    {
+        $classMetadata = $args->getClassMetadata();
+
+        // if we are in an inheritance hierarchy, only apply this once
+        if ($classMetadata->isInheritanceTypeSingleTable() && !$classMetadata->isRootEntity()) {
+            return;
+        }
+
+        $classMetadata->setTableName($this->prefix.$classMetadata->getTableName());
+
+        foreach ($classMetadata->getAssociationMappings() as $fieldName => $mapping) {
+            if ($mapping['type'] === ClassMetadataInfo::MANY_TO_MANY && isset($classMetadata->associationMappings[$fieldName]['joinTable']['name'])) {
+                $mappedTableName = $classMetadata->associationMappings[$fieldName]['joinTable']['name'];
+                $classMetadata->associationMappings[$fieldName]['joinTable']['name'] = $this->prefix.$mappedTableName;
+            }
+        }
+    }
+}