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<?php |
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namespace Kaliop\eZMigrationBundle\Core\Matcher; |
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use Kaliop\eZMigrationBundle\API\MatcherInterface; |
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use Kaliop\eZMigrationBundle\API\Exception\InvalidMatchResultsNumberException; |
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use Kaliop\eZMigrationBundle\API\Exception\InvalidMatchConditionsException; |
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abstract class AbstractMatcher implements MatcherInterface |
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{ |
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/** @var string[] $allowedConditions the keywords we allow to be used for matching on*/ |
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protected $allowedConditions = array(); |
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/** @var string $returns user-readable name of the type of object returned */ |
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protected $returns; |
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/** @var int $maxConditions the maximum number of conditions we allow to match on for a single match request */ |
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protected $maxConditions = 1; |
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/** @var int $minConditions the minimum number of conditions we allow to match on for a single match request. It could be replaced with an array of mandatory conditions, really... */ |
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protected $minConditions = 1; |
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/** |
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* @param array $conditions |
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* @throws InvalidMatchConditionsException |
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*/ |
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protected function validateConditions(array $conditions) |
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{ |
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if ($this->minConditions > 0 && count($conditions) < $this->minConditions) { |
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throw new InvalidMatchConditionsException($this->returns . ' can not be matched because the matching conditions are empty'); |
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} |
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if ($this->maxConditions > 0 && count($conditions) > $this->maxConditions) { |
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throw new InvalidMatchConditionsException($this->returns . " can not be matched because multiple matching conditions are specified. Only {$this->maxConditions} condition(s) are supported"); |
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} |
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foreach ($conditions as $key => $value) { |
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if (!in_array((string)$key, $this->allowedConditions)) { |
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throw new InvalidMatchConditionsException($this->returns . " can not be matched because matching condition '$key' is not supported. Supported conditions are: " . |
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implode(', ', $this->allowedConditions)); |
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} |
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} |
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} |
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/** |
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* @param $conditionsArray |
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* @return array|\ArrayObject |
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* @throws InvalidMatchConditionsException |
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*/ |
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protected function matchAnd($conditionsArray) |
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{ |
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/// @todo introduce proper re-validation of all child conditions |
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if (!is_array($conditionsArray) || !count($conditionsArray)) { |
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throw new InvalidMatchConditionsException($this->returns . " can not be matched because no matching conditions found for 'and' clause."); |
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} |
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$class = null; |
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foreach ($conditionsArray as $conditions) { |
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$out = $this->match($conditions); |
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if ($out instanceof \ArrayObject) { |
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$class = get_class($out); |
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$out = $out->getArrayCopy(); |
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} |
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if (!isset($results)) { |
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$results = $out; |
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} else { |
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$results = array_intersect_key($results, $out); |
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} |
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} |
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if ($class) { |
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$results = new $class($results); |
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} |
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return $results; |
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} |
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/** |
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* @param $conditionsArray |
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* @return array |
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* @throws InvalidMatchConditionsException |
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*/ |
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protected function matchOr($conditionsArray) |
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{ |
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/// @todo introduce proper re-validation of all child conditions |
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if (!is_array($conditionsArray) || !count($conditionsArray)) { |
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throw new InvalidMatchConditionsException($this->returns . " can not be matched because no matching conditions found for 'or' clause."); |
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} |
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$class = null; |
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$results = array(); |
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foreach ($conditionsArray as $conditions) { |
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$out = $this->match($conditions); |
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if ($out instanceof \ArrayObject) { |
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$class = get_class($out); |
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$out = $out->getArrayCopy(); |
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} |
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$results = array_replace($results, $out); |
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} |
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if ($class) { |
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$results = new $class($results); |
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} |
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return $results; |
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} |
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/** |
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* @param array $conditions |
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* @return mixed |
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* @throws InvalidMatchConditionsException |
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* @throws InvalidMatchResultsNumberException |
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*/ |
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public function matchOne(array $conditions) |
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{ |
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$results = $this->match($conditions); |
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$count = count($results); |
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if ($count !== 1) { |
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throw new InvalidMatchResultsNumberException("Found $count " . $this->returns . " when expected exactly only one to match the conditions"); |
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} |
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return reset($results); |
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} |
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/** |
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* @param array $conditions |
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* @return array|\ArrayObject the keys must be a unique identifier of the matched entities |
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* @throws \Kaliop\eZMigrationBundle\API\Exception\InvalidMatchConditionsException |
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*/ |
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abstract public function match(array $conditions); |
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} |
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kaliop-uk /
ezmigrationbundle
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