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<?php |
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namespace Kir\MySQL\Builder\Expr; |
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use RuntimeException; |
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/** |
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* Defines fields that are sortable. Sortable fields have an alias. |
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* The alias can be passed as a sort specifier - along with the direction in which to sort. |
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*/ |
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class DBOrderSpec implements DBOrderSpecInterface, OrderBySpecification { |
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/** @var array<string, string> */ |
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private $sortSpecification; |
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/** @var array<string, string> */ |
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private $sortingInstruction; |
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/** @var array<string, mixed> */ |
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private $options; |
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/** |
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* @param array<string, string> $sortSpecification |
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* @param array<string, string> $sortingInstruction |
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* @param array{max_sort_instructions?: positive-int} $options |
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* @return static |
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*/ |
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public static function from(array $sortSpecification, array $sortingInstruction, array $options = []) { |
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return new static($sortSpecification, $sortingInstruction, $options); |
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} |
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/** |
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* @inheritDoc |
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*/ |
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public function __construct(array $sortSpecification, array $sortingInstruction, array $options = []) { |
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$this->sortSpecification = $sortSpecification; |
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$this->sortingInstruction = $sortingInstruction; |
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$this->options = $options; |
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} |
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/** |
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* @return array<int, array{string, string&('ASC'|'DESC')}> |
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*/ |
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public function getFields(): array { |
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$fields = []; |
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$max = $this->options['max_sort_instructions'] ?? 16; |
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foreach($this->sortingInstruction as $alias => $direction) { |
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$direction = strtolower($direction) === 'desc' ? 'DESC' : 'ASC'; |
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if(!array_key_exists($alias, $this->sortSpecification)) { |
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throw new DBSortAliasNotFoundException('Sorting: Alias for DB-Expression not found'); |
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} |
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$fields[] = [$this->sortSpecification[$alias], $direction]; |
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if($max < 1) { |
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throw new DBSortTooManyInstructionsException(); |
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} |
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$max--; |
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} |
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return $fields; |
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} |
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} |
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rkrx /
php-mysql-query-builder
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