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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 */ |
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private $orderBy = array(); |
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/** |
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* @param string|OrderBySpecification $expression |
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* @param string $direction |
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* @return $this |
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*/ |
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public function orderBy($expression, $direction = 'asc') { |
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if($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 $values |
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* @return $this |
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*/ |
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public function orderByValues($fieldName, array $values) { |
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$expr = []; |
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foreach(array_values($values) as $idx => $value) { |
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$expr[] = $this->db()->quoteExpression("WHEN ? THEN ?", array($value, $idx)); |
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} |
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$this->orderBy[] = array(sprintf("CASE %s\n\t\t%s\n\tEND", $this->db()->quoteField($fieldName), join("\n\t\t", $expr)), 'ASC'); |
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return $this; |
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} |
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/** |
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* @param string $query |
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* @return string |
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*/ |
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protected function buildOrder($query) { |
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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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$arr = array(); |
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foreach($this->orderBy as $order) { |
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list($expression, $direction) = $order; |
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$arr[] = sprintf("\t%s %s", $expression, strtoupper($direction)); |
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} |
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return $query.join(",\n", $arr)."\n"; |
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} |
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/** |
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* @param string $expression |
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* @param string $direction |
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*/ |
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private function addOrder($expression, $direction) { |
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$direction = $this->fixDirection($direction); |
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if(is_array($expression)) { |
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if(!count($expression)) { |
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return; |
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} |
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$arguments = array( |
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$expression[0], |
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array_slice($expression, 1) |
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); |
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$expression = call_user_func_array(array($this->db(), 'quoteExpression'), $arguments); |
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} |
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$this->orderBy[] = array($expression, $direction); |
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} |
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/** |
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* @param string $direction |
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* @return string |
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*/ |
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private function fixDirection($direction) { |
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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
