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<?php |
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declare(strict_types=1); |
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namespace Redislabs\Module\RedisGraph; |
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final class Edge |
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{ |
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private string $queryPredicate; |
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private Node $sourceNode; |
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private Node $destinationNode; |
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private ?string $relation; |
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private ?iterable $properties = []; |
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public function __construct( |
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string $queryPredicate, |
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Node $sourceNode, |
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?string $relation, |
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Node $destinationNode, |
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?iterable $properties = [] |
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) { |
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$this->queryPredicate = $queryPredicate; |
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$this->sourceNode = $sourceNode; |
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$this->destinationNode = $destinationNode; |
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$this->relation = $relation; |
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$this->properties = $properties; |
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} |
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public static function create(Node $sourceNode, string $relation, Node $destinationNode): self |
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{ |
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return new self('CREATE', $sourceNode, $relation, $destinationNode); |
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} |
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public static function merge(Node $sourceNode, string $relation, Node $destinationNode): self |
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{ |
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return new self('MERGE', $sourceNode, $relation, $destinationNode); |
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} |
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public function withProperties(iterable $properties): self |
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{ |
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$new = clone $this; |
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$new->properties = $properties; |
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return $new; |
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} |
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public function getType(): string |
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{ |
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return $this->queryPredicate; |
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} |
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public function toString(): string |
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{ |
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if ($this->queryPredicate === 'MERGE') { |
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return $this->toStringWithMerge(); |
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} |
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return $this->toStringWithCreate(); |
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} |
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public function toStringWithMerge(): string |
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{ |
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$edgeString = '(' . $this->sourceNode->getAlias() . ')'; |
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$edgeString .= '-['; |
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if ($this->relation !== null) { |
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$edgeString .= ':' . $this->relation . ' '; |
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} |
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if ($this->properties) { |
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$edgeString .= '{' . $this->getProps($this->properties) . '}'; |
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} |
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$edgeString .= ']->'; |
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$edgeString .= '(' . $this->destinationNode->getAlias() . ')'; |
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return $edgeString; |
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} |
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public function toStringWithCreate(): string |
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{ |
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$edgeString = '(' . $this->sourceNode->getAlias() . ':' . $this->sourceNode->getLabel() . ')'; |
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$edgeString .= '-['; |
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if ($this->relation !== null) { |
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$edgeString .= ':' . $this->relation . ' '; |
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} |
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if ($this->properties) { |
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$edgeString .= '{' . $this->getProps($this->properties) . '}'; |
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} |
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$edgeString .= ']->'; |
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$edgeString .= '(' . $this->destinationNode->getAlias() . ':' . $this->destinationNode->getLabel() . ')'; |
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return $edgeString; |
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} |
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private function getProps(iterable $properties): string |
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{ |
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$props = ''; |
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foreach ($properties as $propKey => $propValue) { |
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if ($props !== '') { |
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$props .= ', '; |
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} |
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$props .= $propKey . ': ' . $this->getPropValueWithDataType($propValue); |
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} |
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return $props; |
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} |
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private function getPropValueWithDataType($propValue) |
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{ |
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$type = gettype($propValue); |
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if ($type === 'string') { |
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return quotedString((string) $propValue); |
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} |
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return (int) $propValue; |
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} |
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public function getQueryPredicate(): string |
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{ |
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return $this->queryPredicate; |
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} |
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} |
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mkorkmaz /
redislabs-redisgraph-php
