custom-ds

<?php

require_once TOOLKIT . '/class.datasource.php';

class datasourcerecent_comments extends SectionDatasource
{
    public $dsParamROOTELEMENT = 'recent-comments';
    public $dsParamORDER = 'desc';
    public $dsParamPAGINATERESULTS = 'no';
    public $dsParamLIMIT = '20';
    public $dsParamSTARTPAGE = '1';
    public $dsParamREDIRECTONEMPTY = 'no';
    public $dsParamREDIRECTONFORBIDDEN = 'no';
    public $dsParamREDIRECTONREQUIRED = 'no';
    public $dsParamSORT = 'system:creation-date';
    public $dsParamHTMLENCODE = 'no';
    public $dsParamASSOCIATEDENTRYCOUNTS = 'yes';

    public $dsParamINCLUDEDELEMENTS = array(
        'system:date',
        'articol',
        'nume: formatted',
        'excerpt',
        'e-mail: formatted',
    );

    public function __construct($env = null, $process_params = true)
    {
        parent::__construct($env, $process_params);
        $this->_dependencies = array();
    }


    public function getSource()
    {
        return '16';
    }

    public function allowEditorToParse()
    {
        return true;
    }

    public function execute(array &$param_pool = null)
    {
        $result = new XMLElement($this->dsParamROOTELEMENT);

        try{
            $result = parent::execute($param_pool);
            $result->setAttribute("email", "http://www.gravatar.com/avatar/" . md5(strtolower($email)) . "?s=" . $size . $this->size . "&amp;d=" . $this->_env["param"]["root"] . "/extensions/gravatar/assets/default.gif");
        } catch (FrontendPageNotFoundException $e) {
            // Work around. This ensures the 404 page is displayed and
            // is not picked up by the default catch() statement below
            FrontendPageNotFoundExceptionHandler::render($e);
        } catch (Exception $e) {
            $result->appendChild(new XMLElement('error', $e->getMessage() . ' on ' . $e->getLine() . ' of file ' . $e->getFile()));
            return $result;
        }

        if ($this->_force_empty_result) {
            $result = $this->emptyXMLSet();
        }

        if ($this->_negate_result) {
            $result = $this->negateXMLSet();
        }

        return $result;
    }
}

$result->setAttribute ads email attribute to the parent .. no ideea how to target child nodes