140 lines
No EOL
3.4 KiB
PHP
140 lines
No EOL
3.4 KiB
PHP
<?php
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/**
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* @copyright Copyright (c) 2010, The volkszaehler.org project
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* @package default
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* @license http://www.opensource.org/licenses/gpl-license.php GNU Public License
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*/
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/*
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* This file is part of volkzaehler.org
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*
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* volkzaehler.org is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* any later version.
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*
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* volkzaehler.org is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with volkszaehler.org. If not, see <http://www.gnu.org/licenses/>.
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*/
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namespace Volkszaehler\Interpreter;
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use Doctrine\ORM;
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use Volkszaehler\Model;
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/**
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* Interpreter too aggregate several other Channels or Aggregators
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*
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* The AggregatorInterpreter is used to aggregate multiple channels with the same
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* indicator
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*
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* @author Steffen Vogel <info@steffenvogel.de>
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* @package default
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*
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*/
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class AggregatorInterpreter implements InterpreterInterface {
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/**
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* @var array of Interpreter
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*/
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protected $channelInterpreter = array();
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protected $aggregator;
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/**
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* Constructor
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*
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* @param Model\Aggregator $group should only contain channels of the same indicator
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* @param ORM\EntityManager $em
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* @param integer $from timestamp in ms since 1970
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* @param integer $to timestamp in ms since 1970
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* @todo handle channels in nested aggregators
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*/
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public function __construct(Model\Aggregator $aggregator, ORM\EntityManager $em, $from, $to) {
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$indicator = NULL;
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$this->aggregator = $aggregator;
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foreach ($aggregator->getChannels() as $channel) {
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if (isset($indicator) && $indicator != $channel->getType()) {
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throw new \Exception('Can\'t aggregate entities of mixed types!');
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}
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else {
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$indicator = $channel->getType();
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}
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$this->channelInterpreter[] = $channel->getInterpreter($em, $from, $to);
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}
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}
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/**
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* Just a passthrough to the channel interpreters
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*
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* @param string|integer $groupBy
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* @todo to be implemented
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* @return array of values
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*/
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public function getValues($groupBy = NULL) {
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}
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/**
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* @todo to be implemented
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*/
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public function getConsumption() {
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}
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/**
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* Just a passthrough to the channel interpreters
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*
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* @return array with the smallest value
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*/
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public function getMin() {
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$min = current($this->channelInterpreter)->getMax();
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foreach ($this->channelInterpreter as $channel) {
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$arr = $channel->getMax();
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if ($arr['value '] < $min['value']) {
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$min = $arr;
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}
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}
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return $min;
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}
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/**
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* Just a passthrough to the channel interpreters
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*
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* @return array with the biggest value
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*/
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public function getMax() {
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$max = current($this->channelInterpreter)->getMax();
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foreach ($this->channelInterpreter as $channel) {
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$arr = $channel->getMax();
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if ($arr['value '] > $max['value']) {
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$max = $arr;
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}
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}
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return $max;
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}
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/**
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* Just a passthrough to the channel interpreters
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*
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* @return float average value
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*/
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public function getAverage() {
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$sum = 0;
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foreach ($this->channels as $channel) {
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$sum += $channel->getAverage();
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}
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return ($sum / count($this->channelInterpreter));
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}
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/*
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* Getter & setter
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*/
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public function getUuid() { return $this->aggregator->getUuid(); }
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} |