Adding URL rewrite to category collection causes unnecessary long query

app/code/community/Mage/Catalog/Helper/Category/Url/Rewrite.php

@@ -0,0 +1,123 @@
+<?php
+/**
+ * Magento
+ *
+ * NOTICE OF LICENSE
+ *
+ * This source file is subject to the Open Software License (OSL 3.0)
+ * that is bundled with this package in the file LICENSE.txt.
+ * It is also available through the world-wide-web at this URL:
+ * http://opensource.org/licenses/osl-3.0.php
+ * If you did not receive a copy of the license and are unable to
+ * obtain it through the world-wide-web, please send an email
+ * to license@magento.com so we can send you a copy immediately.
+ *
+ * DISCLAIMER
+ *
+ * Do not edit or add to this file if you wish to upgrade Magento to newer
+ * versions in the future. If you wish to customize Magento for your
+ * needs please refer to http://www.magento.com for more information.
+ *
+ * @category    Mage
+ * @package     Mage_Catalog
+ * @copyright  Copyright (c) 2006-2016 X.commerce, Inc. and affiliates (http://www.magento.com)
+ * @license    http://opensource.org/licenses/osl-3.0.php  Open Software License (OSL 3.0)
+ */
+
+/**
+ * Category url rewrite helper
+ *
+ * @category    Mage
+ * @package     Mage_Catalog
+ * @author      Magento Core Team <core@magentocommerce.com>
+ */
+class Mage_Catalog_Helper_Category_Url_Rewrite
+    implements Mage_Catalog_Helper_Category_Url_Rewrite_Interface
+{
+    /**
+     * Adapter instance
+     *
+     * @var Varien_Db_Adapter_Interface
+     */
+    protected $_connection;
+
+    /**
+     * Resource instance
+     *
+     * @var Mage_Core_Model_Resource
+     */
+    protected $_resource;
+
+    /**
+     * Initialize resource and connection instances
+     *
+     * @param array $args
+     */
+    public function __construct(array $args = array())
+    {
+        $this->_resource = Mage::getSingleton('core/resource');
+        $this->_connection = !empty($args['connection']) ? $args['connection'] : $this->_resource
+            ->getConnection(Mage_Core_Model_Resource::DEFAULT_READ_RESOURCE);
+    }
+
+    /**
+     * Join url rewrite table to eav collection
+     *
+     * @param Mage_Eav_Model_Entity_Collection_Abstract $collection
+     * @param int $storeId
+     * @return Mage_Catalog_Helper_Category_Url_Rewrite
+     */
+    public function joinTableToEavCollection(Mage_Eav_Model_Entity_Collection_Abstract $collection, $storeId)
+    {
+        $collection->joinTable(
+            'core/url_rewrite',
+            'category_id=entity_id',
+            array('request_path'),
+            "{{table}}.is_system=1 AND " .
+                "{{table}}.store_id='{$storeId}' AND " .
+                "{{table}}.category_id IS NOT NULL AND " .
+                "{{table}}.product_id IS NULL",
+            'left'
+        );
+
+        return $this;
+    }
+
+    /**
+     * Join url rewrite table to collection
+     *
+     * @param Mage_Catalog_Model_Resource_Category_Flat_Collection $collection
+     * @param int $storeId
+     * @return Mage_Catalog_Helper_Category_Url_Rewrite|Mage_Catalog_Helper_Category_Url_Rewrite_Interface
+     */
+    public function joinTableToCollection(Mage_Catalog_Model_Resource_Category_Flat_Collection $collection, $storeId)
+    {
+        $collection->getSelect()->joinLeft(
+            array('url_rewrite' => $collection->getTable('core/url_rewrite')),
+            'url_rewrite.category_id = main_table.entity_id AND url_rewrite.is_system = 1 '.
+                ' AND ' . $collection->getConnection()->quoteInto('url_rewrite.store_id = ?', $storeId).
+                ' AND ' . $collection->getConnection()->quoteInto('url_rewrite.id_path LIKE ?', 'category/%'),
+            array('request_path')
+        );
+        return $this;
+    }
+
+    /**
+     * Join url rewrite to select
+     *
+     * @param Varien_Db_Select $select
+     * @param int $storeId
+     * @return Mage_Catalog_Helper_Category_Url_Rewrite
+     */
+    public function joinTableToSelect(Varien_Db_Select $select, $storeId)
+    {
+        $select->joinLeft(
+            array('url_rewrite' => $this->_resource->getTableName('core/url_rewrite')),
+            'url_rewrite.category_id=main_table.entity_id AND url_rewrite.is_system=1 AND ' .
+                $this->_connection->quoteInto('url_rewrite.store_id = ? AND ',
+                    (int)$storeId) .
+                $this->_connection->prepareSqlCondition('url_rewrite.id_path', array('like' => 'category/%')),
+            array('request_path' => 'url_rewrite.request_path'));
+        return $this;
+    }
+}

composer.json

@@ -21,6 +21,10 @@
                 "app/code/community/Webbhuset/Bugfix/",
                 "app/code/community/Webbhuset/Bugfix/"
             ],
+            [
+                "app/code/community/Mage/Catalog/Helper/Category/Url/Rewrite.php",
+                "app/code/community/Mage/Catalog/Helper/Category/Url/Rewrite.php"
+            ],
             [
                 "app/code/community/Mage/Adminhtml/Block/Media/Uploader.php",
                 "app/code/community/Mage/Adminhtml/Block/Media/Uploader.php"