_playerToRating = new HashMap(); } public function getRating(Player $player) { return $this->_playerToRating->getValue($player); } public function setRating(Player $player, Rating $rating) { return $this->_playerToRating->setValue($player, $rating); } public function getAllPlayers() { return $this->_playerToRating->getAllKeys(); } public function getAllRatings() { return $this->_playerToRating->getAllValues(); } public function count() { return $this->_playerToRating->count(); } }