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<?php |
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declare(strict_types=1); |
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namespace ReadModel\Filters; |
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use ReadModel\Filters\DataTransformer as T; |
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abstract class FiltersBuilder |
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{ |
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/** @var OrderBy|null */ |
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protected $defaultOrder; |
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/** @var int|null */ |
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protected $defaultLimit; |
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/** @var int */ |
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protected $defaultOffset; |
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/** @var array */ |
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private $filters = []; |
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/** @var array */ |
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private $ordersBy = []; |
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public function __construct(string $defaultOrder = null, int $defaultLimit = null, int $defaultOffset = 0) |
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{ |
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$this->defaultLimit = $defaultLimit; |
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$this->defaultOffset = $defaultOffset; |
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if ($defaultOrder !== null) { |
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$this->defaultOrder = new OrderBy($defaultOrder); |
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$this->addOrderBy($this->defaultOrder->field()); |
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} |
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} |
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public function addFilter(string $name, $defaultValue = null, T\DataTransformer $transformer = null): self |
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{ |
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$value = $this->getValue($name, $defaultValue); |
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$this->filters[$name] = new Filter($name, $value, $transformer); |
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return $this; |
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} |
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public function addIntegerFilter(string $name, $defaultValue = null): self |
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{ |
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return $this->addFilter($name, $defaultValue, new T\IntegerTransformer()); |
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} |
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public function addFloatFilter(string $name, $defaultValue = null): self |
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{ |
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return $this->addFilter($name, $defaultValue, new T\FloatTransformer()); |
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} |
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public function addBooleanFilter(string $name, $defaultValue = null): self |
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{ |
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return $this->addFilter($name, $defaultValue, new T\BooleanTransformer()); |
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} |
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public function addDateTimeFilter(string $name, $defaultValue = null, $format = 'Y-m-d H:i'): self |
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{ |
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return $this->addFilter($name, $defaultValue, new T\DateTimeTransformer($format)); |
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} |
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public function addDateFilter(string $name, $defaultValue = null): self |
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{ |
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return $this->addFilter($name, $defaultValue, new T\DateTimeTransformer('Y-m-d')); |
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} |
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/** |
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* Supports also comma separated values, eg: 'tag1,tag2,tag3' |
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*/ |
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public function addArrayFilter(string $name, $defaultValues = null): self |
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{ |
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$value = $this->getValue($name, $defaultValues); |
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if (is_string($value)) { |
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$value = explode(',', $value); |
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} |
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$this->filters[$name] = new Filter($name, $value, new T\ArrayTransformer()); |
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return $this; |
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} |
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public function addOrderBy(string ...$fields): self |
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{ |
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foreach ($fields as $field) { |
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if (in_array($field, $this->ordersBy)) { |
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continue; |
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} |
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$this->ordersBy[] = $field; |
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} |
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return $this; |
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} |
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public function buildFilters(): Filters |
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{ |
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return new Filters($this->filters, $this->resolveOrderBy(), $this->getLimit(), $this->getOffset()); |
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} |
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private function resolveOrderBy(): array |
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{ |
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$order = $this->getOrderBy(); |
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if ($order === null) { |
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return array_filter([$this->defaultOrder]); |
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} |
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$orders = array_map(function (string $order) { |
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return new OrderBy(trim($order)); |
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}, explode(',', $order)); |
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return array_filter($orders, function (OrderBy $orderBy) { |
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return in_array($orderBy->field(), $this->ordersBy); |
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}); |
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} |
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abstract protected function getValue(string $name, $defaultValue); |
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abstract protected function getLimit(): ?int; |
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abstract protected function getOffset(): int; |
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abstract protected function getOrderBy(): ?string; |
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} |
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tomaszhanc /
cqrs-lite-read-model
