/**
* Return aggregated data for portfolio history
* Prices of all stocks from the portfolio are summed for each day
*
* @param PersistentCollection $portfolio
* @return array
*/
public function getPortfolioHistory(PersistentCollection $portfolio)
{
return $this->getEntityManager()->createQueryBuilder()->select('h.date', 'sum(h.closePrice) AS total')->from('AppBundle:StockHistory', 'h')->where('h.stock in (:portfolio)')->setParameter('portfolio', $portfolio->getValues())->addGroupBy('h.date')->orderBy('h.date')->getQuery()->getArrayResult();
}
/**
* (PHP 5 >= 5.0.0)<br/>
* Checks if current position is valid
* @link http://php.net/manual/en/iterator.valid.php
* @return boolean The return value will be casted to boolean and then evaluated.
* Returns true on success or false on failure.
*/
public function valid()
{
$children = $this->children->getValues();
return isset($children[$this->childrenPosition]);
}
