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<?php
/**
* Piwik - Open source web analytics
*
* @link http://piwik.org
* @license http://www.gnu.org/licenses/gpl-3.0.html Gpl v3 or later
* @version $Id: TablePartitioning.php 386 2008-03-18 19:27:54Z julien $
*
* @package Piwik
*/
/**
*
* NB: When a new table is partitionned using this class, we have to update the method
* Piwik::getTablesInstalled() to add the new table to the list of tablename_* to fetch
*
* @package Piwik
*/
abstract class Piwik_TablePartitioning
{
protected $tableName = null;
protected $generatedTableName = null;
protected $timestamp = null;
static public $tablesAlreadyInstalled = null;
public function __construct( $tableName )
{
$this->tableName = $tableName;
}
abstract protected function generateTableName() ;
public function setTimestamp( $timestamp )
{
$this->timestamp = $timestamp;
$this->generatedTableName = null;
$this->getTableName();
}
public function getTableName()
{
// table name already processed
if(!is_null($this->generatedTableName))
{
return $this->generatedTableName;
}
if(is_null($this->timestamp))
{
throw new Exception("You have to specify a timestamp for a Table Partitioning by date.");
}
// generate table name
$this->generatedTableName = $this->generateTableName();
// we make sure the table already exists
$this->checkTableExists();
}
protected function checkTableExists()
{
if(is_null(self::$tablesAlreadyInstalled))
{
self::$tablesAlreadyInstalled = Piwik::getTablesInstalled( $forceReload = false );
}
if(!in_array($this->generatedTableName, self::$tablesAlreadyInstalled))
{
$db = Zend_Registry::get('db');
$sql = Piwik::getTableCreateSql($this->tableName);
$config = Zend_Registry::get('config');
$prefixTables = $config->database->tables_prefix;
$sql = str_replace( $prefixTables . $this->tableName, $this->generatedTableName, $sql);
$db->query( $sql );
self::$tablesAlreadyInstalled[] = $this->generatedTableName;
}
}
protected function __toString()
{
return $this->getTableName();
}
}
/**
*
* @package Piwik
*/
class Piwik_TablePartitioning_Monthly extends Piwik_TablePartitioning
{
public function __construct( $tableName )
{
parent::__construct($tableName);
}
protected function generateTableName()
{
$config = Zend_Registry::get('config');
$prefixTables = $config->database->tables_prefix;
$date = date("Y_m", $this->timestamp);
return $prefixTables . $this->tableName . "_" . $date;
}
}
/**
*
* @package Piwik
*/
class Piwik_TablePartitioning_Daily extends Piwik_TablePartitioning
{
public function __construct( $tableName )
{
parent::__construct($tableName);
}
protected function generateTableName()
{
$config = Zend_Registry::get('config');
$prefixTables = $config->database->tables_prefix;
$date = date("Y_m_d", $this->timestamp);
return $prefixTables . $this->tableName . "_" . $date;
}
}
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