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<?php |
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/** |
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* Bluz Framework Component |
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* |
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* @copyright Bluz PHP Team |
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* @link https://github.com/bluzphp/framework |
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*/ |
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declare(strict_types=1); |
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namespace Bluz\Db\Query; |
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/** |
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* Class Expression Builder |
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* |
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* @package Bluz\Db\Query |
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*/ |
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class CompositeBuilder implements \Countable |
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{ |
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/** |
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* @var string type AND|OR |
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*/ |
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private $type; |
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/** |
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* @var array parts of the composite expression |
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*/ |
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private $parts = []; |
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/** |
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* Constructor |
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* |
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* @param array $parts parts of the composite expression |
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* @param string $type AND|OR |
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*/ |
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public function __construct(array $parts = [], string $type = 'AND') |
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{ |
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$type = strtoupper($type); |
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$this->type = $type === 'OR' ? 'OR' : 'AND'; |
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$this->addParts($parts); |
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} |
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/** |
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* Adds a set of expressions to composite expression |
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* |
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* @param array $parts |
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* |
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* @return CompositeBuilder |
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*/ |
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public function addParts($parts) : CompositeBuilder |
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{ |
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foreach ($parts as $part) { |
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$this->addPart($part); |
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} |
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return $this; |
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} |
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/** |
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* Adds an expression to composite expression |
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* |
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* @param mixed $part |
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* |
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* @return CompositeBuilder |
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*/ |
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public function addPart($part) : CompositeBuilder |
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{ |
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if (!empty($part) || ($part instanceof self && $part->count() > 0)) { |
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$this->parts[] = $part; |
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} |
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return $this; |
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} |
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/** |
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* Return type of this composite |
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* |
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* @return string |
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*/ |
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public function getType() : string |
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{ |
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return $this->type; |
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} |
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/** |
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* Retrieves the amount of expressions on composite expression. |
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* |
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* @return integer |
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*/ |
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public function count() : int |
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{ |
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return count($this->parts); |
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} |
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/** |
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* Retrieve the string representation of this composite expression. |
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* |
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* @return string |
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*/ |
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public function __toString() |
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{ |
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if ($this->count() === 1) { |
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return (string) $this->parts[0]; |
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} |
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return '(' . implode(') ' . $this->type . ' (', $this->parts) . ')'; |
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} |
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} |
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bluzphp /
framework
