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<?php |
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namespace Helix\DB\SQL; |
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use Helix\DB; |
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/** |
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* Produces numeric expressions for the instance. |
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*/ |
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trait NumericTrait { |
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/** |
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* @var DB |
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*/ |
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protected $db; |
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/** |
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* `ABS($this)` |
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* |
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* @return Numeric |
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*/ |
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public function abs () { |
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return new Numeric($this->db, "ABS({$this})"); |
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} |
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/** |
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* `($this + $arg)` |
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* |
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* @param number|ExpressionInterface $arg |
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* @return Numeric |
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*/ |
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public function add ($arg) { |
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return new Numeric($this->db, "({$this} + {$arg})"); |
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} |
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/** |
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* `CEIL($this)` |
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* |
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* @return Numeric |
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*/ |
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public function ceil () { |
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return new Numeric($this->db, "CEIL({$this})"); |
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} |
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/** |
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* `($this / $arg)` |
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* |
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* @param number|ExpressionInterface $arg |
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* @return Numeric |
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*/ |
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public function divide ($arg) { |
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return new Numeric($this->db, "({$this} / {$arg})"); |
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} |
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/** |
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* `FLOOR($this)` |
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* |
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* @return Numeric |
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*/ |
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public function floor () { |
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return new Numeric($this->db, "FLOOR({$this})"); |
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} |
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/** |
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* `($this % 2) = 0` |
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* |
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* @return Predicate |
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*/ |
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public function isEven () { |
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return new Predicate("({$this} % 2) = 0"); |
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} |
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/** |
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* `$this < 0` |
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* |
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* @return Predicate |
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*/ |
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public function isNegative () { |
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return new Predicate("{$this} < 0"); |
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} |
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/** |
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* `($this % 2) <> 0` |
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* |
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* @return Predicate |
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*/ |
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public function isOdd () { |
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return new Predicate("({$this} % 2) <> 0"); |
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} |
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/** |
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* `$this > 0` |
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* |
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* @return Predicate |
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*/ |
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public function isPositive () { |
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return new Predicate("{$this} > 0"); |
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} |
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/** |
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* `($this % $arg)` |
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* |
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* @param number|ExpressionInterface $arg |
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* @return Numeric |
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*/ |
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public function modulo ($arg) { |
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return new Numeric($this->db, "({$this} % {$arg})"); |
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} |
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/** |
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* `($this * $arg)` |
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* |
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* @param number|ExpressionInterface $arg |
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* @return Numeric |
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*/ |
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public function multiply ($arg) { |
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return new Numeric($this->db, "({$this} * {$arg})"); |
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} |
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/** |
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* `POW($this,$exponent)` |
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* |
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* @param number|ExpressionInterface $exponent |
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* @return Numeric |
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*/ |
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public function pow ($exponent) { |
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return new Numeric($this->db, "POW({$this},{$exponent})"); |
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} |
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/** |
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* `ROUND($this,$decimals)` |
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* |
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* @param int $decimals |
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* @return Numeric |
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*/ |
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public function round (int $decimals = 0) { |
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return new Numeric($this->db, "ROUND({$this},{$decimals})"); |
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} |
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/** |
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* `($this - $arg)` |
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* |
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* @param number|ExpressionInterface $arg |
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* @return Numeric |
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*/ |
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public function subtract ($arg) { |
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return new Numeric($this->db, "({$this} - {$arg})"); |
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} |
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} |
hfw /
db
