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<?php
/**
* Piwik - free/libre analytics platform
*
* @link http://piwik.org
* @license http://www.gnu.org/licenses/gpl-3.0.html GPL v3 or later
*
*/
namespace Piwik\DataTable\Filter;
use Piwik\DataTable;
use Piwik\DataTable\Row;
/**
* Execute a callback for each row of a {@link DataTable} passing certain column values and metadata
* as metadata, and replaces row metadata with the callback result.
*
* **Basic usage example**
*
* $dataTable->filter('MetadataCallbackReplace', array('url', function ($url) {
* return $url . '#index';
* }));
*
* @api
*/
class MetadataCallbackReplace extends ColumnCallbackReplace
{
/**
* Constructor.
*
* @param DataTable $table The DataTable that will eventually be filtered.
* @param array|string $metadataToFilter The metadata whose values should be passed to the callback
* and then replaced with the callback's result.
* @param callable $functionToApply The function to execute. Must take the metadata value as a parameter
* and return a value that will be used to replace the original.
* @param array|null $functionParameters deprecated - use an [anonymous function](http://php.net/manual/en/functions.anonymous.php)
* instead.
* @param array $extraColumnParameters Extra column values that should be passed to the callback, but
* shouldn't be replaced.
*/
public function __construct($table, $metadataToFilter, $functionToApply, $functionParameters = null,
$extraColumnParameters = array())
{
parent::__construct($table, $metadataToFilter, $functionToApply, $functionParameters, $extraColumnParameters);
}
/**
* @param Row $row
* @param string $metadataToFilter
* @param mixed $newValue
*/
protected function setElementToReplace($row, $metadataToFilter, $newValue)
{
$row->setMetadata($metadataToFilter, $newValue);
}
/**
* @param Row $row
* @param string $metadataToFilter
* @return array|bool|mixed
*/
protected function getElementToReplace($row, $metadataToFilter)
{
return $row->getMetadata($metadataToFilter);
}
}
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