protected function _buildSelectString($oObject = null)
    {
        $sArtTable = getViewName('oxarticles', $this->_iEditLang);

        $sQ = "select oxreviews.oxid, oxreviews.oxcreate, oxreviews.oxtext, oxreviews.oxobjectid, {$sArtTable}.oxparentid, {$sArtTable}.oxtitle as oxtitle, {$sArtTable}.oxvarselect as oxvarselect, oxparentarticles.oxtitle as parenttitle, ";
        $sQ .= "concat( {$sArtTable}.oxtitle, if(isnull(oxparentarticles.oxtitle), '', oxparentarticles.oxtitle), {$sArtTable}.oxvarselect) as arttitle from oxreviews ";
        $sQ .= "left join $sArtTable as {$sArtTable} on {$sArtTable}.oxid=oxreviews.oxobjectid and 'oxarticle' = oxreviews.oxtype ";
        $sQ .= "left join $sArtTable as oxparentarticles on oxparentarticles.oxid = {$sArtTable}.oxparentid ";
        $sQ .= "where 1 and oxreviews.oxlang = '{$this->_iEditLang}' ";


        //removing parent id checking from sql
        $sStr = "/\s+and\s+" . $sArtTable . "\.oxparentid\s*=\s*''/";
        $sQ = getStr()->preg_replace($sStr, " ", $sQ);

        return " $sQ and {$sArtTable}.oxid is not null ";
    }