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<?php |
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namespace ByJG\AnyDataset\Core; |
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use ByJG\AnyDataset\Core\Enum\Relation; |
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class IteratorFilter |
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{ |
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/** |
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* @var array |
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*/ |
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private $filters; |
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/** |
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* IteratorFilter Constructor |
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*/ |
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public function __construct() |
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{ |
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$this->filters = []; |
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} |
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/** |
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* @return IteratorFilter |
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*/ |
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public static function getInstance() |
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{ |
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return new IteratorFilter(); |
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} |
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/** |
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* @param array $array |
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* @return Row[] |
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*/ |
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public function match($array) |
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{ |
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$returnArray = []; |
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foreach ($array as $sr) { |
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if ($this->evalString($sr)) { |
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$returnArray[] = $sr; |
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} |
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} |
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return $returnArray; |
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} |
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/** |
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* Get the filter |
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* |
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* @param IteratorFilterFormatter $formatter |
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* @param string $tableName |
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* @param array $params |
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* @param string $returnFields |
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* @return string |
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*/ |
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public function format(IteratorFilterFormatter $formatter, $tableName = null, &$params = [], $returnFields = "*") |
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{ |
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return $formatter->format($this->filters, $tableName, $params, $returnFields); |
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} |
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/** |
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* @param Row $singleRow |
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* @return bool |
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*/ |
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private function evalString(Row $singleRow) |
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{ |
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$result = []; |
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$finalResult = false; |
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$pos = 0; |
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$result[0] = true; |
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foreach ($this->filters as $filter) { |
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if (($filter[0] == ")") || ($filter[0] == " or ")) { |
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$finalResult = $finalResult || $result[$pos]; |
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$result[++$pos] = true; |
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} |
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$name = $filter[1]; |
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$relation = $filter[2]; |
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$value = $filter[3]; |
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$field = [$singleRow->get($name)]; |
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foreach ($field as $valueparam) { |
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switch ($relation) { |
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case Relation::EQUAL: |
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$result[$pos] = $result[$pos] && ($valueparam == $value); |
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break; |
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case Relation::GREATER_THAN: |
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$result[$pos] = $result[$pos] && ($valueparam > $value); |
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break; |
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case Relation::LESS_THAN: |
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$result[$pos] = $result[$pos] && ($valueparam < $value); |
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break; |
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case Relation::GREATER_OR_EQUAL_THAN: |
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$result[$pos] = $result[$pos] && ($valueparam >= $value); |
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break; |
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case Relation::LESS_OR_EQUAL_THAN: |
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$result[$pos] = $result[$pos] && ($valueparam <= $value); |
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break; |
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case Relation::NOT_EQUAL: |
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$result[$pos] = $result[$pos] && ($valueparam != $value); |
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break; |
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case Relation::STARTS_WITH: |
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$result[$pos] = $result[$pos] && (strpos(is_null($valueparam) ? "" : $valueparam, $value) === 0); |
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break; |
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default: // Relation::CONTAINS: |
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$result[$pos] = $result[$pos] && (strpos(is_null($valueparam) ? "" : $valueparam, $value) !== false); |
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break; |
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} |
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} |
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} |
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$finalResult = $finalResult || $result[$pos]; |
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return $finalResult; |
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} |
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/** |
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* @param string $name Field name |
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* @param int $relation Relation enum |
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* @param string $value Field string value |
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* @return IteratorFilter |
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* @desc Add a single string comparison to filter. |
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*/ |
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public function addRelation($name, $relation, $value) |
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{ |
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$this->filters[] = [" and ", $name, $relation, $value]; |
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return $this; |
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} |
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/** |
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* @param string $name Field name |
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* @param int $relation Relation enum |
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* @param string $value Field string value |
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* @return IteratorFilter |
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* @desc Add a single string comparison to filter. This comparison use the OR operator. |
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*/ |
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public function addRelationOr($name, $relation, $value) |
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{ |
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$this->filters[] = [" or ", $name, $relation, $value]; |
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return $this; |
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} |
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/** |
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* Add a "(" |
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* @return IteratorFilter |
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*/ |
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public function startGroup() |
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{ |
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$this->filters[] = ["(", "", "", ""]; |
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return $this; |
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} |
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/** |
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* Add a ")" |
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* @return IteratorFilter |
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*/ |
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public function endGroup() |
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{ |
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$this->filters[] = [")", "", "", ""]; |
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return $this; |
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} |
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/** |
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* @return array |
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*/ |
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public function getRawFilters() |
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{ |
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return $this->filters; |
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} |
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} |
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