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<?php |
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declare(strict_types=1); |
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namespace Cycle\Schema\Definition\Comparator; |
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use Cycle\Schema\Definition\Field; |
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use Exception; |
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use InvalidArgumentException; |
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final class FieldComparator |
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{ |
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private $columnName; |
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/** @var Field[] */ |
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private $fields = []; |
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public function addField(string $key, Field $field): self |
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{ |
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if ($this->columnName === null) { |
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$this->columnName = $field->getColumn(); |
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} |
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if ($this->columnName !== $field->getColumn()) { |
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throw new InvalidArgumentException('The field comparator only accepts fields with the same column name.'); |
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} |
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$this->fields[$key] = $field; |
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return $this; |
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} |
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public function compare(): void |
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{ |
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if (count($this->fields) <= 1) { |
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return; |
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} |
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// Check options |
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if (!$this->compareOptions() || !$this->compareProperties()) { |
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throw new Exception( |
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"Different definitions are specified for the `$this->columnName` column:" |
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. "\n\n{$this->generateErrorText()}" |
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); |
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} |
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} |
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private function generateErrorText(): string |
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{ |
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$lines = []; |
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foreach ($this->fields as $key => $field) { |
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$primary = $field->isPrimary() ? ' primary' : ''; |
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$line = sprintf("%s:\n type=%s%s", $key, $field->getType(), $primary); |
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// Print options |
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foreach ($field->getOptions() as $optionName => $optionValue) { |
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$line .= " {$optionName}=" . var_export($optionValue, true); |
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} |
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$lines[] = $line; |
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} |
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return implode("\n\n", $lines); |
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} |
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private function compareProperties(): bool |
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{ |
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$tuples = array_map(static function (Field $field): array { |
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return [ |
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$field->getType(), |
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// $field->isPrimary(), // should not compared |
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]; |
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}, $this->fields); |
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// Compare options content |
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$prototype = array_shift($tuples); |
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foreach ($tuples as $tuple) { |
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if (count(array_diff_assoc($prototype, $tuple)) > 0) { |
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return false; |
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} |
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} |
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return true; |
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} |
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private function compareOptions(): bool |
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{ |
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// Collect fields options |
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$optionsSet = array_map(static function (Field $field): array { |
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return iterator_to_array($field->getOptions()); |
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}, $this->fields); |
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// Compare options cont |
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$countResult = array_count_values(array_map('count', $optionsSet)); |
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if (count($countResult) !== 1) { |
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return false; |
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} |
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// Compare options content |
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$prototype = array_shift($optionsSet); |
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foreach ($optionsSet as $options) { |
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if (count(array_diff_assoc($prototype, $options)) > 0) { |
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return false; |
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} |
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} |
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return true; |
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} |
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} |
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cycle /
schema-builder
