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<?php |
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/** |
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* This file is part of the core-library package. |
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* |
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* (c) 2018 WEBEWEB |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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namespace WBW\Library\Core\Database; |
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use Exception; |
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use PDO; |
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use WBW\Library\Core\Security\Authenticator; |
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/** |
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* Abstract database. |
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* |
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* @author webeweb <https://github.com/webeweb/> |
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* @package WBW\Library\Core\Database |
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*/ |
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abstract class AbstractDatabase { |
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/** |
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* Authenticator. |
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* |
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* @var Authenticator |
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*/ |
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private $authenticator; |
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/** |
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* Connection. |
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* |
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* @var PDO |
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*/ |
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private $connection; |
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/** |
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* Database. |
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* |
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* @var string |
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*/ |
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private $database; |
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/** |
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* Constructor. |
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*/ |
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protected function __construct(Authenticator $authenticator) { |
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$this->authenticator = $authenticator; |
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} |
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/** |
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* Connect. |
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* |
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* @return PDO Returns the connection. |
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* @throws Exception Throws an exception if the connection failed. |
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*/ |
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abstract protected function connect(); |
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/** |
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* Get the authenticator. |
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* |
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* @return Authenticator Returns the authenticator. |
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*/ |
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final public function getAuthenticator() { |
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return $this->authenticator; |
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} |
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/** |
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* Get the connection. |
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* |
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* @return PDO Returns the connection. |
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* @throws Exception Throws an exception if the connection failed. |
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*/ |
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final public function getConnection() { |
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if (null === $this->connection) { |
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$this->connection = $this->connect(); |
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} |
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return $this->connection; |
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} |
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/** |
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* Get the database. |
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* |
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* @return string Returns the database. |
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*/ |
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final public function getDatabase() { |
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return $this->database; |
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} |
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/** |
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* Prepare a binding. |
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* |
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* @param array $fields The fields. |
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* @return array Returns the binding as key => :key. |
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*/ |
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final public function prepareBinding(array $fields) { |
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$output = []; |
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foreach ($fields as $current) { |
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$output[$current] = ":" . $current; |
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} |
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return $output; |
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} |
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/** |
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* Prepare an INSERT SQL query. |
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* |
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* @param string $table The table. |
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* @param array $values The values [field => value]. |
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* @return string Returns the INSERT SQL query. |
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*/ |
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final public function prepareInsert($table, array $values) { |
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// Initialize the query. |
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$query = []; |
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$query[] = "INSERT INTO "; |
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$query[] = $table; |
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$query[] = " (`"; |
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$query[] = implode("`, `", array_keys($values)); |
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$query[] = "`) VALUES ("; |
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$query[] = implode(", ", array_values($values)); |
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$query[] = ")"; |
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// Return the query. |
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return implode("", $query); |
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} |
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/** |
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* Prepare an UPDATE SQL query. |
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* |
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* @param string $table The table. |
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* @param array $values The values [field => value] |
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* @return string Returns the UPDATE SQL query. |
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*/ |
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final public function prepareUpdate($table, array $values) { |
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// Initialize the SET. |
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$set = []; |
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foreach ($values as $k => $v) { |
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$set[] = "`" . $k . "` = " . $v; |
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} |
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// Initialize the query. |
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$query = []; |
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$query[] = "UPDATE "; |
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$query[] = $table; |
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$query[] = " SET "; |
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$query[] = implode(", ", $set); |
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// Return the query. |
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return implode("", $query); |
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} |
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/** |
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* Set the authenticator. |
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* |
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* @param Authenticator $authenticator The authenticator. |
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* @return AbstractDatabase Returns this abstract database. |
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*/ |
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final public function setAuthenticator(Authenticator $authenticator) { |
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$this->authenticator = $authenticator; |
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return $this; |
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} |
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/** |
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* Set the database. |
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* |
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* @param string $database The database. |
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* @return AbstractDatabase Returns this abstract database. |
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*/ |
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final public function setDatabase($database) { |
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$this->database = $database; |
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return $this; |
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} |
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} |
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webeweb /
core-library
