root / drupal7 / sites / all / libraries / simplepie / library / SimplePie / Cache / MySQL.php @ 41cc1b08
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<?php
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/**
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* SimplePie
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*
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* A PHP-Based RSS and Atom Feed Framework.
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* Takes the hard work out of managing a complete RSS/Atom solution.
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*
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* Copyright (c) 2004-2012, Ryan Parman, Geoffrey Sneddon, Ryan McCue, and contributors
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without modification, are
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* permitted provided that the following conditions are met:
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*
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* * Redistributions of source code must retain the above copyright notice, this list of
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* conditions and the following disclaimer.
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*
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* * Redistributions in binary form must reproduce the above copyright notice, this list
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* of conditions and the following disclaimer in the documentation and/or other materials
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* provided with the distribution.
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*
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* * Neither the name of the SimplePie Team nor the names of its contributors may be used
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* to endorse or promote products derived from this software without specific prior
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* written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS
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* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
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* AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS
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* AND CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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* @package SimplePie
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* @version 1.3.1
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* @copyright 2004-2012 Ryan Parman, Geoffrey Sneddon, Ryan McCue
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* @author Ryan Parman
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* @author Geoffrey Sneddon
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* @author Ryan McCue
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* @link http://simplepie.org/ SimplePie
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* @license http://www.opensource.org/licenses/bsd-license.php BSD License
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*/
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/**
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* Caches data to a MySQL database
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*
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* Registered for URLs with the "mysql" protocol
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*
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* For example, `mysql://root:password@localhost:3306/mydb?prefix=sp_` will
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* connect to the `mydb` database on `localhost` on port 3306, with the user
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* `root` and the password `password`. All tables will be prefixed with `sp_`
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*
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* @package SimplePie
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* @subpackage Caching
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*/
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class SimplePie_Cache_MySQL extends SimplePie_Cache_DB |
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{
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/**
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* PDO instance
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*
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* @var PDO
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*/
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protected $mysql; |
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/**
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* Options
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*
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* @var array
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*/
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protected $options; |
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/**
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* Cache ID
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*
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* @var string
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*/
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protected $id; |
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/**
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* Create a new cache object
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*
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* @param string $location Location string (from SimplePie::$cache_location)
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* @param string $name Unique ID for the cache
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* @param string $type Either TYPE_FEED for SimplePie data, or TYPE_IMAGE for image data
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*/
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public function __construct($location, $name, $type) |
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{
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$this->options = array( |
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'user' => null, |
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'pass' => null, |
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'host' => '127.0.0.1', |
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'port' => '3306', |
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'path' => '', |
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'extras' => array( |
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'prefix' => '', |
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), |
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); |
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$this->options = array_merge_recursive($this->options, SimplePie_Cache::parse_URL($location)); |
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// Path is prefixed with a "/"
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$this->options['dbname'] = substr($this->options['path'], 1); |
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try
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{
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$this->mysql = new PDO("mysql:dbname={$this->options['dbname']};host={$this->options['host']};port={$this->options['port']}", $this->options['user'], $this->options['pass'], array(PDO::MYSQL_ATTR_INIT_COMMAND => 'SET NAMES utf8')); |
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} |
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catch (PDOException $e) |
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{
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$this->mysql = null; |
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return;
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} |
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$this->id = $name . $type; |
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if (!$query = $this->mysql->query('SHOW TABLES')) |
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{
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$this->mysql = null; |
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return;
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} |
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$db = array(); |
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while ($row = $query->fetchColumn()) |
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{
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$db[] = $row; |
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} |
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if (!in_array($this->options['extras']['prefix'] . 'cache_data', $db)) |
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{
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$query = $this->mysql->exec('CREATE TABLE `' . $this->options['extras']['prefix'] . 'cache_data` (`id` TEXT CHARACTER SET utf8 NOT NULL, `items` SMALLINT NOT NULL DEFAULT 0, `data` BLOB NOT NULL, `mtime` INT UNSIGNED NOT NULL, UNIQUE (`id`(125)))'); |
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if ($query === false) |
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{
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$this->mysql = null; |
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} |
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} |
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if (!in_array($this->options['extras']['prefix'] . 'items', $db)) |
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{
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$query = $this->mysql->exec('CREATE TABLE `' . $this->options['extras']['prefix'] . 'items` (`feed_id` TEXT CHARACTER SET utf8 NOT NULL, `id` TEXT CHARACTER SET utf8 NOT NULL, `data` TEXT CHARACTER SET utf8 NOT NULL, `posted` INT UNSIGNED NOT NULL, INDEX `feed_id` (`feed_id`(125)))'); |
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if ($query === false) |
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{
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$this->mysql = null; |
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} |
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} |
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} |
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/**
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* Save data to the cache
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*
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* @param array|SimplePie $data Data to store in the cache. If passed a SimplePie object, only cache the $data property
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* @return bool Successfulness
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*/
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public function save($data) |
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{
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if ($this->mysql === null) |
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{
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return false; |
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} |
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if ($data instanceof SimplePie) |
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{
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$data = clone $data; |
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$prepared = self::prepare_simplepie_object_for_cache($data); |
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$query = $this->mysql->prepare('SELECT COUNT(*) FROM `' . $this->options['extras']['prefix'] . 'cache_data` WHERE `id` = :feed'); |
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$query->bindValue(':feed', $this->id); |
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if ($query->execute()) |
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{
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if ($query->fetchColumn() > 0) |
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{
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$items = count($prepared[1]); |
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if ($items) |
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{
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$sql = 'UPDATE `' . $this->options['extras']['prefix'] . 'cache_data` SET `items` = :items, `data` = :data, `mtime` = :time WHERE `id` = :feed'; |
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$query = $this->mysql->prepare($sql); |
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$query->bindValue(':items', $items); |
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} |
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else
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{
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$sql = 'UPDATE `' . $this->options['extras']['prefix'] . 'cache_data` SET `data` = :data, `mtime` = :time WHERE `id` = :feed'; |
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$query = $this->mysql->prepare($sql); |
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} |
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$query->bindValue(':data', $prepared[0]); |
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$query->bindValue(':time', time()); |
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$query->bindValue(':feed', $this->id); |
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if (!$query->execute()) |
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{
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return false; |
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} |
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} |
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else
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{
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$query = $this->mysql->prepare('INSERT INTO `' . $this->options['extras']['prefix'] . 'cache_data` (`id`, `items`, `data`, `mtime`) VALUES(:feed, :count, :data, :time)'); |
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$query->bindValue(':feed', $this->id); |
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$query->bindValue(':count', count($prepared[1])); |
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$query->bindValue(':data', $prepared[0]); |
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$query->bindValue(':time', time()); |
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if (!$query->execute()) |
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{
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return false; |
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} |
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} |
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$ids = array_keys($prepared[1]); |
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if (!empty($ids)) |
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{
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foreach ($ids as $id) |
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{
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$database_ids[] = $this->mysql->quote($id); |
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} |
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$query = $this->mysql->prepare('SELECT `id` FROM `' . $this->options['extras']['prefix'] . 'items` WHERE `id` = ' . implode(' OR `id` = ', $database_ids) . ' AND `feed_id` = :feed'); |
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$query->bindValue(':feed', $this->id); |
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if ($query->execute()) |
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{
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$existing_ids = array(); |
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while ($row = $query->fetchColumn()) |
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{
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$existing_ids[] = $row; |
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} |
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$new_ids = array_diff($ids, $existing_ids); |
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foreach ($new_ids as $new_id) |
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{
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if (!($date = $prepared[1][$new_id]->get_date('U'))) |
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{
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$date = time(); |
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} |
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$query = $this->mysql->prepare('INSERT INTO `' . $this->options['extras']['prefix'] . 'items` (`feed_id`, `id`, `data`, `posted`) VALUES(:feed, :id, :data, :date)'); |
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$query->bindValue(':feed', $this->id); |
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$query->bindValue(':id', $new_id); |
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$query->bindValue(':data', serialize($prepared[1][$new_id]->data)); |
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$query->bindValue(':date', $date); |
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if (!$query->execute()) |
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{
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return false; |
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} |
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} |
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return true; |
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} |
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} |
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else
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{
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return true; |
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} |
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} |
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} |
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else
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{
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$query = $this->mysql->prepare('SELECT `id` FROM `' . $this->options['extras']['prefix'] . 'cache_data` WHERE `id` = :feed'); |
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$query->bindValue(':feed', $this->id); |
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if ($query->execute()) |
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{
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if ($query->rowCount() > 0) |
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{
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$query = $this->mysql->prepare('UPDATE `' . $this->options['extras']['prefix'] . 'cache_data` SET `items` = 0, `data` = :data, `mtime` = :time WHERE `id` = :feed'); |
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$query->bindValue(':data', serialize($data)); |
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$query->bindValue(':time', time()); |
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$query->bindValue(':feed', $this->id); |
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if ($this->execute()) |
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{
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return true; |
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} |
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} |
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else
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{
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$query = $this->mysql->prepare('INSERT INTO `' . $this->options['extras']['prefix'] . 'cache_data` (`id`, `items`, `data`, `mtime`) VALUES(:id, 0, :data, :time)'); |
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$query->bindValue(':id', $this->id); |
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$query->bindValue(':data', serialize($data)); |
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$query->bindValue(':time', time()); |
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if ($query->execute()) |
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{
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return true; |
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} |
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} |
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} |
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} |
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return false; |
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} |
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|
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/**
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* Retrieve the data saved to the cache
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*
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* @return array Data for SimplePie::$data
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*/
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public function load() |
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{
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if ($this->mysql === null) |
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{
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return false; |
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} |
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|
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$query = $this->mysql->prepare('SELECT `items`, `data` FROM `' . $this->options['extras']['prefix'] . 'cache_data` WHERE `id` = :id'); |
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$query->bindValue(':id', $this->id); |
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if ($query->execute() && ($row = $query->fetch())) |
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{
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$data = unserialize($row[1]); |
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|
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if (isset($this->options['items'][0])) |
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{
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$items = (int) $this->options['items'][0]; |
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} |
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else
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{
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$items = (int) $row[0]; |
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} |
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|
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if ($items !== 0) |
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{
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if (isset($data['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['feed'][0])) |
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{
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$feed =& $data['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['feed'][0]; |
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} |
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elseif (isset($data['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['feed'][0])) |
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{
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$feed =& $data['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['feed'][0]; |
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} |
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elseif (isset($data['child'][SIMPLEPIE_NAMESPACE_RDF]['RDF'][0])) |
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{
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$feed =& $data['child'][SIMPLEPIE_NAMESPACE_RDF]['RDF'][0]; |
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} |
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elseif (isset($data['child'][SIMPLEPIE_NAMESPACE_RSS_20]['rss'][0])) |
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{
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$feed =& $data['child'][SIMPLEPIE_NAMESPACE_RSS_20]['rss'][0]; |
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} |
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else
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{
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$feed = null; |
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} |
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|
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if ($feed !== null) |
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{
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$sql = 'SELECT `data` FROM `' . $this->options['extras']['prefix'] . 'items` WHERE `feed_id` = :feed ORDER BY `posted` DESC'; |
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if ($items > 0) |
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{
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$sql .= ' LIMIT ' . $items; |
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} |
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|
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$query = $this->mysql->prepare($sql); |
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$query->bindValue(':feed', $this->id); |
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if ($query->execute()) |
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{
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while ($row = $query->fetchColumn()) |
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{
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$feed['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['entry'][] = unserialize($row); |
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} |
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} |
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else
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{
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return false; |
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} |
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} |
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} |
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return $data; |
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} |
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return false; |
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} |
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|
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/**
|
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* Retrieve the last modified time for the cache
|
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*
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* @return int Timestamp
|
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*/
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public function mtime() |
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{
|
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if ($this->mysql === null) |
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{
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return false; |
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} |
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|
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$query = $this->mysql->prepare('SELECT `mtime` FROM `' . $this->options['extras']['prefix'] . 'cache_data` WHERE `id` = :id'); |
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$query->bindValue(':id', $this->id); |
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if ($query->execute() && ($time = $query->fetchColumn())) |
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{
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return $time; |
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} |
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else
|
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{
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return false; |
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} |
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} |
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|
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/**
|
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* Set the last modified time to the current time
|
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*
|
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* @return bool Success status
|
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*/
|
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public function touch() |
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{
|
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if ($this->mysql === null) |
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{
|
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return false; |
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} |
| 399 |
|
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$query = $this->mysql->prepare('UPDATE `' . $this->options['extras']['prefix'] . 'cache_data` SET `mtime` = :time WHERE `id` = :id'); |
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$query->bindValue(':time', time()); |
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$query->bindValue(':id', $this->id); |
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if ($query->execute() && $query->rowCount() > 0) |
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{
|
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return true; |
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} |
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else
|
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{
|
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return false; |
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} |
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} |
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|
| 413 |
/**
|
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* Remove the cache
|
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*
|
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* @return bool Success status
|
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*/
|
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public function unlink() |
| 419 |
{
|
| 420 |
if ($this->mysql === null) |
| 421 |
{
|
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return false; |
| 423 |
} |
| 424 |
|
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$query = $this->mysql->prepare('DELETE FROM `' . $this->options['extras']['prefix'] . 'cache_data` WHERE `id` = :id'); |
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$query->bindValue(':id', $this->id); |
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$query2 = $this->mysql->prepare('DELETE FROM `' . $this->options['extras']['prefix'] . 'items` WHERE `feed_id` = :id'); |
| 428 |
$query2->bindValue(':id', $this->id); |
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if ($query->execute() && $query2->execute()) |
| 430 |
{
|
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return true; |
| 432 |
} |
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else
|
| 434 |
{
|
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return false; |
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} |
| 437 |
} |
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} |