feature 3077 : improve cache invalidation

- add "lastmodified" automatic field for categories, groups, users, tags and images tables
- provide a "server key" to the client cache manager

git-svn-id: http://piwigo.org/svn/trunk@28532 68402e56-0260-453c-a942-63ccdbb3a9ee

1 files changed, 45 insertions, 0 deletions

diff --git a/install/db/141-database.php b/install/db/141-database.php
new file mode 100644
index 000000000..f6a157123
--- /dev/null
+++ b/install/db/141-database.php
@@ -0,0 +1,45 @@
+<?php
+// +-----------------------------------------------------------------------+
+// | Piwigo - a PHP based photo gallery                                    |
+// +-----------------------------------------------------------------------+
+// | Copyright(C) 2008-2014 Piwigo Team                  http://piwigo.org |
+// | Copyright(C) 2003-2008 PhpWebGallery Team    http://phpwebgallery.net |
+// | Copyright(C) 2002-2003 Pierrick LE GALL   http://le-gall.net/pierrick |
+// +-----------------------------------------------------------------------+
+// | This program is free software; you can redistribute it and/or modify  |
+// | it under the terms of the GNU General Public License as published by  |
+// | the Free Software Foundation                                          |
+// |                                                                       |
+// | 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      |
+// | General Public License for more details.                              |
+// |                                                                       |
+// | You should have received a copy of the GNU General Public License     |
+// | along with this program; if not, write to the Free Software           |
+// | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, |
+// | USA.                                                                  |
+// +-----------------------------------------------------------------------+
+
+defined('PHPWG_ROOT_PATH') or die('Hacking attempt!');
+
+$upgrade_description = 'add lastmodified field for categories, images, groups, users, tags';
+
+$tables = array(
+  CATEGORIES_TABLE,
+  GROUPS_TABLE,
+  IMAGES_TABLE,
+  TAGS_TABLE,
+  USER_INFOS_TABLE
+  );
+ 
+foreach ($tables as $table)
+{
+  pwg_query('
+ALTER TABLE '. $table .'
+  ADD `lastmodified` TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
+  ADD INDEX `lastmodified` (`lastmodified`)
+;');
+}
+
+echo "\n".$upgrade_description."\n";