1
0
mirror of synced 2024-12-16 16:16:04 +03:00
doctrine2/lib/Doctrine/Cache/Query/Sqlite.php

126 lines
3.8 KiB
PHP
Raw Normal View History

<?php
class Doctrine_Cache_Query_Sqlite implements Countable {
/**
* doctrine cache
*/
const CACHE_TABLE = 'doctrine_query_cache';
/**
2006-06-30 03:04:39 +04:00
* @var Doctrine_Session $session the table object this cache container belongs to
*/
private $table;
/**
* @var PDO $dbh database handler
*/
private $dbh;
/**
* constructor
2006-08-22 01:04:20 +04:00
*
* @param Doctrine_Connection|null $connection
*/
2006-08-22 01:04:20 +04:00
public function __construct($connection = null) {
if( ! ($connection instanceof Doctrine_Connection))
2006-08-22 01:04:20 +04:00
$connection = Doctrine_Manager::getInstance()->getCurrentConnection();
2006-08-22 01:04:20 +04:00
$this->session = $connection;
$dir = $this->session->getAttribute(Doctrine::ATTR_CACHE_DIR);
$this->path = $dir.DIRECTORY_SEPARATOR;
$this->dbh = new PDO("sqlite::memory:");
2006-06-30 03:04:39 +04:00
try {
2006-06-30 03:04:39 +04:00
if($this->session->getAttribute(Doctrine::ATTR_CREATE_TABLES) === true)
{
$columns = array();
$columns['query_md5'] = array('string', 32, 'notnull');
$columns['query_result'] = array('array', 100000, 'notnull');
$columns['expires'] = array('integer', 11, 'notnull');
$dataDict = new Doctrine_DataDict($this->dbh);
$dataDict->createTable(self::CACHE_TABLE, $columns);
}
} catch(PDOException $e) {
}
}
/**
* store
* stores a query in cache
*
* @param string $query
* @param array $result
* @param integer $lifespan
* @return void
*/
public function store($query, array $result, $lifespan) {
$sql = "INSERT INTO ".self::CACHE_TABLE." (query_md5, query_result, expires) VALUES (?,?,?)";
$stmt = $this->dbh->prepare($sql);
$params = array(md5($query), serialize($result), (time() + $lifespan));
$stmt->execute($params);
}
/**
* fetch
*
* @param string $md5
* @return array
*/
public function fetch($md5) {
$sql = "SELECT query_result, expires FROM ".self::CACHE_TABLE." WHERE query_md5 = ?";
$stmt = $this->dbh->prepare($sql);
$params = array($md5);
$stmt->execute($params);
$result = $stmt->fetch(PDO::FETCH_ASSOC);
return unserialize($result['query_result']);
}
/**
* deleteAll
* returns the number of deleted rows
*
* @return integer
*/
public function deleteAll() {
$sql = "DELETE FROM ".self::CACHE_TABLE;
$stmt = $this->dbh->query($sql);
return $stmt->rowCount();
}
2006-08-22 01:04:20 +04:00
/**
* deleteExpired
* returns the number of deleted rows
*
* @return integer
*/
public function deleteExpired() {
$sql = "DELETE FROM ".self::CACHE_TABLE." WHERE expired < ?";
$stmt = $this->dbh->prepare($sql);
$stmt->execute(array(time()));
}
/**
* delete
* returns whether or not the given
* query was succesfully deleted
*
* @param string $md5
* @return boolean
*/
public function delete($md5) {
$sql = "DELETE FROM ".self::CACHE_TABLE." WHERE query_md5 = ?";
$stmt = $this->dbh->prepare($sql);
$params = array($md5);
$stmt->execute($params);
return $stmt->rowCount();
}
/**
* count
*
* @return integer
*/
public function count() {
$stmt = $this->dbh->query("SELECT COUNT(*) FROM ".self::CACHE_TABLE);
$data = $stmt->fetch(PDO::FETCH_NUM);
// table has three columns so we have to divide the count by two
return $data[0];
}
}