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<?php |
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declare(strict_types=1); |
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namespace Psi\Component\ObjectAgent\Query\Converter; |
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use Psi\Component\ObjectAgent\Query\Comparison; |
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use Psi\Component\ObjectAgent\Query\Composite; |
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use Psi\Component\ObjectAgent\Query\Join; |
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use Psi\Component\ObjectAgent\Query\Query; |
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class ArrayConverter |
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{ |
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private static $comparisons = [ |
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Comparison::EQUALS, |
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Comparison::NOT_EQUALS, |
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Comparison::GREATER_THAN, |
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Comparison::GREATER_THAN_EQUAL, |
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Comparison::LESS_THAN, |
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Comparison::LESS_THAN_EQUAL, |
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Comparison::NULL, |
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Comparison::NOT_NULL, |
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Comparison::IN, |
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Comparison::NOT_IN, |
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Comparison::CONTAINS, |
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Comparison::NOT_CONTAINS, |
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]; |
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private static $composites = [ |
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Composite::AND, |
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Composite::OR, |
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]; |
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public function __invoke(array $query) |
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{ |
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$query = $this->merge([ |
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'selects' => [], |
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'from' => null, |
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'criteria' => null, |
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'orderings' => [], |
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'joins' => [], |
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'firstResult' => null, |
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'maxResults' => null, |
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], $query); |
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if (null === $query['from']) { |
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throw new \InvalidArgumentException(sprintf( |
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'You must specify the "from" part of the query.' |
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)); |
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} |
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if ($query['criteria']) { |
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$query['criteria'] = new Composite(Composite::AND, $this->walkCriteria($query['criteria'])); |
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} |
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$query['joins'] = $this->walkJoins($query['joins']); |
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$from = $query['from']; |
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unset($query['from']); |
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return Query::create($from, $query); |
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} |
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private function walkJoins(array $joins) |
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{ |
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$joinObjects = []; |
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foreach ($joins as $join) { |
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$join = $this->merge([ |
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'type' => Join::INNER_JOIN, |
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'join'=> null, |
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'alias' => null, |
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], $join, ['join', 'alias']); |
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$joinObjects[] = new Join($join['join'], $join['alias'], $join['type']); |
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} |
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return $joinObjects; |
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} |
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private function walkCriteria(array $exprs, array $original = null) |
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{ |
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$original = $original ?: $exprs; |
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$criterias = []; |
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foreach ($exprs as $operator => $right) { |
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if (in_array($operator, self::$comparisons)) { |
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if (!is_array($right)) { |
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throw new \InvalidArgumentException(sprintf( |
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'Comparison must have an array as the right-sided value, got "%s"', |
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gettype($right) |
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)); |
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} |
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foreach ($right as $field => $value) { |
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$criterias[] = new Comparison($operator, $field, $value); |
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} |
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continue; |
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} |
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if (in_array($operator, self::$composites)) { |
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$criterias[] = new Composite($operator, $this->walkCriteria($right, $original)); |
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continue; |
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} |
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throw new \InvalidArgumentException(sprintf( |
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'Unknown expression operator "%s" in "%s"', $operator, $this->toString($original) |
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)); |
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} |
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return $criterias; |
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} |
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private function toString(array $expr) |
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{ |
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return json_encode($expr); |
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} |
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private function merge(array $defaults, array $values, array $required = []) |
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{ |
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View Code Duplication |
if ($diff = array_diff($required, array_keys($values))) { |
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throw new \InvalidArgumentException(sprintf( |
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'Keys "%s" are required for "%s"', |
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implode('", "', $diff), json_encode($values) |
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)); |
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} |
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View Code Duplication |
if ($diff = array_diff(array_keys($values), array_keys($defaults))) { |
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throw new \InvalidArgumentException(sprintf( |
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'Invalid query keys "%s", valid keys: "%s"', |
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implode('", "', $diff), implode('", "', array_keys($defaults)) |
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)); |
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} |
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return array_merge($defaults, $values); |
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} |
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} |
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Duplicated code is one of the most pungent code smells. If you need to duplicate the same code in three or more different places, we strongly encourage you to look into extracting the code into a single class or operation.
You can also find more detailed suggestions in the “Code” section of your repository.