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<?php |
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namespace Dwo\Aggregator; |
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use Dwo\Aggregator\Exception\AggregatorException; |
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use Dwo\Aggregator\Model\Aggregate; |
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use Dwo\Aggregator\Model\PreAggregate; |
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/** |
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* Class Merger |
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* |
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* @author Dave Www <[email protected]> |
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*/ |
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class Merger |
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{ |
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/** |
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* merges Aggregate+Aggregate | Aggregate+PreAggregate | PreAggregate+PreAggregate | array()+array() |
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* |
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* @param mixed $origin Aggregate|PreAggregate|array |
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* @param mixed $merge Aggregate|PreAggregate|array |
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* @param array $saveKeys |
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* @param string|null $idKey |
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*/ |
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public static function merge(&$origin, $merge, array $saveKeys = [], $idKey = null) |
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{ |
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$checkMergeType = function ($a) { |
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if ($a instanceof Aggregate) { |
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return 16; |
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} elseif ($a instanceof PreAggregate) { |
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return 4; |
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} else { |
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if (is_array($a)) { |
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return 1; |
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} |
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} |
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return null; |
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}; |
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$typeOne = $checkMergeType($origin); |
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$typeTwo = $checkMergeType($merge); |
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$mergeType = $typeOne + $typeTwo; |
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if (32 === $mergeType) { |
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self::mergePre($origin, $merge, $saveKeys, $idKey); |
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self::mergeAgg($origin, $merge); |
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} elseif (16 === $typeOne && 4 === $typeTwo) { |
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self::mergePre($origin, $merge, $saveKeys, $idKey); |
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self::mergePreToAgg($origin, $merge); |
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} elseif (4 <= $typeOne && 4 <= $typeTwo) { |
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self::mergePre($origin, $merge, $saveKeys, $idKey); |
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} elseif (2 === $mergeType) { |
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self::mergeArrays($origin, $merge, $saveKeys); |
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} else { |
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throw new AggregatorException('cant be merged'); |
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} |
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} |
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/** |
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* @param Aggregate $origin |
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* @param Aggregate $merge |
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*/ |
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private static function mergeAgg(Aggregate $origin, Aggregate $merge) |
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{ |
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foreach ($merge->getOriginIds() as $id) { |
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$origin->addOriginId($id); |
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} |
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} |
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/** |
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* @param Aggregate $origin |
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* @param PreAggregate $merge |
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*/ |
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private static function mergePreToAgg(Aggregate $origin, PreAggregate $merge) |
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{ |
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if (null !== $id = $merge->getId()) { |
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$origin->addOriginId($id); |
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} |
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} |
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/** |
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* @param PreAggregate $origin |
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* @param PreAggregate $merge |
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* @param array $saveKeys |
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* @param string|null $idKey |
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*/ |
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private static function mergePre(PreAggregate $origin, PreAggregate $merge, array $saveKeys = [], $idKey = null) |
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{ |
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$originData = $origin->getData(); |
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$data = $merge->getData(); |
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if (null !== $idKey) { |
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unset($data[$idKey]); |
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} |
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self::mergeArrays($originData, $data, $saveKeys); |
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$origin->setData($originData); |
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$origin->incrementCount($merge->getCount()); |
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} |
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/** |
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* @param array $dataOrigin |
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* @param array $data |
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* @param array $saveKeys |
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*/ |
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private static function mergeArrays(array &$dataOrigin, array $data, array $saveKeys = []) |
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{ |
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foreach ($data as $key => $value) { |
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if (!isset($dataOrigin[$key])) { |
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$dataOrigin[$key] = null; |
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} |
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$mergeable = !in_array($key, $saveKeys); |
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$operation = isset($saveKeys[$key]); |
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switch (true) { |
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case is_numeric($value) && $mergeable && !$operation: |
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$dataOrigin[$key] += $value; |
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break; |
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case is_array($value) && $mergeable && !$operation: |
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if (null === $dataOrigin[$key]) { |
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$dataOrigin[$key] = []; |
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} |
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self::mergeArrays($dataOrigin[$key], $value); |
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break; |
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case $mergeable && $operation: |
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if (null === $dataOrigin[$key]) { |
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$dataOrigin[$key] = []; |
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} elseif (!is_array($dataOrigin[$key])) { |
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$dataOrigin[$key] = array($dataOrigin[$key]); |
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} |
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if (is_array($value)) { |
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$dataOrigin[$key] = array_merge($dataOrigin[$key], $value); |
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} else { |
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$dataOrigin[$key][] = $value; |
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} |
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break; |
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default: |
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if (null === $dataOrigin[$key]) { |
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$dataOrigin[$key] = $value; |
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} |
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break; |
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} |
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} |
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} |
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} |
davewwww /
Aggregator
