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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 $Id$
*
* @package Piwik_DataTable
*/
/**
* The DataTable_Manager registers all the instanciated DataTable and provides an
* easy way to access them. This is used to store all the DataTable during the archiving process.
* At the end of archiving, the ArchiveProcessing will read the stored datatable and record them in the DB.
*
* @package Piwik_DataTable
*/
class Piwik_DataTable_Manager
{
static private $instance = null;
protected function __construct()
{}
/**
* Returns instance
*
* @return Piwik_DataTable_Manager
*/
static public function getInstance()
{
if (self::$instance == null)
{
$c = __CLASS__;
self::$instance = new $c();
}
return self::$instance;
}
/**
* Array used to store the DataTable
*
* @var array
*/
protected $tables = array();
/**
* Number of datatable currently stored in the array
*
* @var int
*/
protected $count = 0;
/**
* Add a DataTable to the registry
*
* @param Piwik_DataTable
* @return int Number of tables registered in the manager (including the one just added)
*/
public function addTable( $table )
{
$this->tables[] = $table;
$this->count++;
return $this->count;
}
/**
* Returns the DataTable associated to the ID $idTable.
* NB: The datatable has to have been instanciated before!
* This method will not fetch the DataTable from the DB.
*
* @exception If the table can't be found
* @return Piwik_DataTable The table
*/
public function getTable( $idTable )
{
// the array tables is indexed at 0
// but the index is computed as the count() of the array after inserting the table
$idTable -= 1;
if(!isset($this->tables[$idTable]))
{
throw new Exception("The request table $idTable couldn't be found.");
}
return $this->tables[$idTable];
}
/**
* Returns all the dataTable registered in the manager
*
* @return array of Piwik_DataTable
*/
public function getTables()
{
return $this->tables;
}
/**
* Delete all the registered DataTables from the manager
*
* @return void
*/
public function deleteAll()
{
$this->tables = array();
}
/**
* Returns the number of DataTable currently registered.
*
* @return int
*/
public function count()
{
return count($this->tables);
}
}
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