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<?php |
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namespace Kir\MySQL\Builder\Traits; |
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use Kir\MySQL\Builder\Expr\OrderBySpecification; |
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trait OrderByBuilder { |
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use AbstractDB; |
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/** @var array<int, array{string, string}> */ |
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private array $orderBy = []; |
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/** |
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* @param string|OrderBySpecification $expression |
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* @param string&('ASC'|'DESC') $direction |
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* @return $this |
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*/ |
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public function orderBy($expression, string $direction = 'ASC') { |
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if($expression instanceof OrderBySpecification) { |
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foreach($expression->getFields() as $field) { |
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$this->addOrder($field[0], $field[1]); |
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} |
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return $this; |
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} |
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$this->addOrder($expression, $direction); |
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return $this; |
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} |
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/** |
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* @param string $fieldName |
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* @param array<int, int|float|string> $values |
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* @return $this |
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*/ |
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public function orderByValues(string $fieldName, array $values) { |
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$expr = []; |
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foreach(array_values($values) as $idx => $value) { |
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$expr[] = $this->db()->quoteExpression("WHEN ? THEN ?", [$value, $idx]); |
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} |
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$this->orderBy[] = [sprintf("CASE %s\n\t\t%s\n\tEND", $this->db()->quoteField($fieldName), implode("\n\t\t", $expr)), 'ASC']; |
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return $this; |
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} |
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/** |
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* @return array<int, array{string, string}> |
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*/ |
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public function getOrderBy() { |
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return $this->orderBy; |
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} |
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/** |
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* Removed all order information from the current layer. This dies not affect sub-selects. |
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* |
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* @return $this |
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*/ |
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public function resetOrderBy() { |
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$this->orderBy = []; |
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return $this; |
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} |
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/** |
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* @param string $query |
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* @return string |
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*/ |
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protected function buildOrder(string $query): string { |
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if(!count($this->orderBy)) { |
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return $query; |
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} |
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$query .= "ORDER BY\n"; |
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$arr = []; |
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foreach($this->orderBy as [$expression, $direction]) { |
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$arr[] = sprintf("\t%s %s", $expression, strtoupper($direction)); |
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} |
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return $query . implode(",\n", $arr) . "\n"; |
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} |
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/** |
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* @param string|array<int, mixed> $expression |
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* @param string&('ASC'|'DESC') $direction |
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*/ |
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private function addOrder($expression, string $direction): void { |
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$direction = $this->fixDirection($direction); |
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if(is_array($expression)) { |
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if(count($expression) < 1) { |
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return; |
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} |
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$expr = (string) $expression[0]; |
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$expression = $this->db()->quoteExpression($expr, array_slice($expression, 1)); |
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} |
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$this->orderBy[] = [$expression, $direction]; |
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} |
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/** |
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* @param string $direction |
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* @return string&('ASC'|'DESC') |
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*/ |
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private function fixDirection(string $direction): string { |
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return strtoupper($direction) !== 'ASC' ? 'DESC' : 'ASC'; |
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} |
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} |
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rkrx /
php-mysql-query-builder
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