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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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use Bluz\Proxy\Db; |
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/** |
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* Query Builders classes is responsible to dynamically create SQL queries |
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* Based on Doctrine QueryBuilder code |
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* |
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* @package Bluz\Db\Query |
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* @link https://github.com/bluzphp/framework/wiki/Db-Query |
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* @link https://github.com/doctrine/dbal/blob/master/lib/Doctrine/DBAL/Query/QueryBuilder.php |
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*/ |
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abstract class AbstractBuilder |
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{ |
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/** |
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* @var array list of table aliases |
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*/ |
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protected $aliases = []; |
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/** |
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* @var array the query parameters |
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*/ |
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protected $params = []; |
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/** |
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* @var array the parameter type map of this query |
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*/ |
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protected $types = []; |
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/** |
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* @var string the complete SQL string for this query |
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*/ |
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protected $sql; |
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/** |
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* Execute this query using the bound parameters and their types |
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* |
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* @return integer|string|array |
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*/ |
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public function execute() |
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{ |
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return Db::query($this->getSql(), $this->params, $this->types); |
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} |
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/** |
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* Return the complete SQL string formed by the current specifications |
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* |
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* Example |
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* <code> |
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* $sb = new SelectBuilder(); |
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* $sb |
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* ->select('u') |
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* ->from('User', 'u'); |
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* echo $qb->getSql(); // SELECT u FROM User u |
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* </code> |
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* |
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* @return string The SQL query string |
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*/ |
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abstract public function getSql() : string; |
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/** |
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* Return the complete SQL string formed for use |
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* |
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* Example |
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* <code> |
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* $sb = new SelectBuilder(); |
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* $sb |
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* ->select('u') |
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* ->from('User', 'u') |
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* ->where('id = ?', 42); |
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* echo $qb->getQuery(); // SELECT u FROM User u WHERE id = "42" |
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* </code> |
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* |
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* @return string |
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*/ |
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public function getQuery() : string |
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{ |
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$sql = $this->getSql(); |
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$sql = str_replace(['%', '?'], ['%%', '"%s"'], $sql); |
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// replace mask by data |
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return vsprintf($sql, $this->getParams()); |
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} |
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/** |
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* Gets a (previously set) query parameter of the query being constructed |
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* |
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* @param mixed $key The key (index or name) of the bound parameter |
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* |
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* @return mixed The value of the bound parameter. |
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*/ |
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public function getParam($key) |
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{ |
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return $this->params[$key] ?? null; |
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} |
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/** |
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* Sets a query parameter for the query being constructed |
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* |
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* Example |
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* <code> |
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* $sb = new SelectBuilder(); |
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* $sb |
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* ->select('u') |
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* ->from('users', 'u') |
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* ->where('u.id = :user_id') |
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* ->setParameter(':user_id', 1); |
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* </code> |
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* |
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* @param string|int|null $key The parameter position or name |
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* @param mixed $value The parameter value |
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* @param integer $type PDO::PARAM_* |
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* |
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* @return self |
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*/ |
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public function setParam($key, $value, $type = \PDO::PARAM_STR) |
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{ |
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if (null === $key) { |
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$key = count($this->params); |
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} |
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$this->params[$key] = $value; |
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$this->types[$key] = $type; |
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return $this; |
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} |
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/** |
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* Gets all defined query parameters for the query being constructed |
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* |
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* @return array The currently defined query parameters |
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*/ |
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public function getParams() : array |
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{ |
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return $this->params; |
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} |
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/** |
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* Sets a collection of query parameters for the query being constructed |
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* |
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* Example |
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* <code> |
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* $sb = new SelectBuilder(); |
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* $sb |
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* ->select('u') |
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* ->from('users', 'u') |
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* ->where('u.id = :user_id1 OR u.id = :user_id2') |
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* ->setParameters([ |
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* ':user_id1' => 1, |
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* ':user_id2' => 2 |
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* ]); |
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* </code> |
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* |
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* @param array $params The query parameters to set |
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* @param array $types The query parameters types to set |
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* |
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* @return self |
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*/ |
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public function setParams(array $params, array $types = []) |
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{ |
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$this->types = $types; |
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$this->params = $params; |
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return $this; |
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} |
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/** |
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* Prepare condition |
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* |
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* <code> |
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* $builder->prepareCondition("WHERE id IN (?)", [..,..]); |
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* </code> |
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* |
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* @param array $args |
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* |
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* @return string |
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*/ |
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protected function prepareCondition(array $args = []) : string |
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{ |
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$condition = array_shift($args); |
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foreach ($args as &$value) { |
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if (is_array($value)) { |
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$replace = implode(',', array_fill(0, count($value), ':REPLACE:')); |
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$condition = preg_replace('/\?/', $replace, $condition, 1); |
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foreach ($value as $part) { |
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$this->setParam(null, $part); |
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} |
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} else { |
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$this->setParam(null, $value); |
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} |
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} |
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unset($value); |
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$condition = preg_replace('/(\:REPLACE\:)/', '?', $condition); |
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return $condition; |
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} |
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/** |
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* Gets a string representation of this QueryBuilder which corresponds to |
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* the final SQL query being constructed. |
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* |
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* @return string The string representation of this QueryBuilder. |
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*/ |
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public function __toString() |
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{ |
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return $this->getSql(); |
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} |
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} |
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