Add forced index on frontend itemlist model

...and change update endpoints (to updates.getk2.org)

CHANGELOG.md

@@ -1,4 +1,4 @@
-![K2](https://getk2.org/downloads/logo/k2_logo.png)
+![K2](https://updates.getk2.org/images/k2_logo.png)
 ***
 
 # Changelog

README.md

@@ -1,4 +1,4 @@
-![K2](https://getk2.org/downloads/logo/k2_logo.png)
+![K2](https://updates.getk2.org/images/k2_logo.png)
 ***
 
 You've already been there... Joomla is a great content management system. In fact it's considered one of the best in the world. But the default article system in Joomla is both spartan and confusing to configure and template in newer versions! In Joomla 1.5 it was just a title and your content body. In Joomla 2.5 article images where introduced as separate fields (but without any auto-resizing) and in Joomla 3.x tags where introduced as a separate component. Have you seen the options to configure all these?

administrator/components/com_k2/jupgrade/j16upgrade.xml

@@ -1,7 +1,7 @@
 <?xml version="1.0" ?>
 <!DOCTYPE jupgrade>
 <jupgrade>
-	<collection>http://getk2.org/app/collection.xml</collection>
+	<collection>https://updates.getk2.org/collection.xml</collection>
 	<installer>
 		<file>administrator/components/com_k2/jupgrade/j16upgrade.php</file>
 		<class>jUpgradeComponentK2</class>

administrator/components/com_k2/jupgrade/j25upgrade.xml

@@ -1,7 +1,7 @@
 <?xml version="1.0" ?>
 <!DOCTYPE jupgrade>
 <jupgrade>
-	<collection>http://getk2.org/app/collection.xml</collection>
+	<collection>https://updates.getk2.org/collection.xml</collection>
 	<installer>
 		<file>administrator/components/com_k2/jupgrade/j25upgrade.php</file>
 		<class>jUpgradeComponentK2</class>

administrator/components/com_k2/k2.php

@@ -129,7 +129,7 @@
         $k2ComponentFooter .= '
             <!-- K2 Update Service -->
             <script type="text/javascript">var K2_INSTALLED_VERSION = \''.K2_CURRENT_VERSION.'\';</script>
-            <script type="text/javascript" src="https://getk2.org/app/update.js?t='.date('Ymd_H').'"></script>
+            <script type="text/javascript" src="https://updates.getk2.org/update.js?t='.date('Ymd_H').'"></script>
         ';
     }
 } else {

components/com_k2/models/itemlist.php

@@ -71,7 +71,7 @@ public function getData($ordering = null)
             $query .= " USE INDEX (idx_item)";
         }
 
-        $query .= " INNER JOIN #__k2_categories AS c ON c.id = i.catid";
+        $query .= " INNER JOIN #__k2_categories AS c USE INDEX (category) ON c.id = i.catid";
 
         if ($ordering == 'best') {
             $query .= " LEFT JOIN #__k2_rating AS r ON r.itemID = i.id";
@@ -623,7 +623,7 @@ public function getRelatedItems($itemID, $tags, $params)
 
         $query = "SELECT itemID
             FROM #__k2_tags_xref
-            WHERE tagID IN ({$sql})
+            WHERE tagID IN({$sql})
                 AND itemID != {$itemID}
             GROUP BY itemID";
         $db->setQuery($query);

docs/collection.xml

@@ -1,4 +1,4 @@
 <?xml version="1.0" encoding="UTF-8" ?>
 <extensionset name="K2" description="K2 Extensions List">
-   <extension name="K2" element="com_k2" type="component" version="1.6" detailsurl="https://getk2.org/app/update.xml"/>
+   <extension name="K2" element="com_k2" type="component" version="1.6" detailsurl="https://updates.getk2.org/update.xml"/>
 </extensionset>

k2.xml

@@ -25,7 +25,7 @@
         </sql>
     </uninstall>
     <updateservers>
-        <server type="extension" priority="1" name="K2">http://getk2.org/app/update.xml</server>
+        <server type="extension" priority="1" name="K2">https://updates.getk2.org/update.xml</server>
     </updateservers>
     <files folder="components/com_k2">
         <folder>controllers</folder>