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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 NdC/WBW |
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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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/** |
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* Abstract database. |
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* |
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* @author NdC/WBW <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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* 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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* Password. |
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* |
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* @var string |
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*/ |
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private $password; |
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/** |
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* Username. |
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* |
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* @var string |
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*/ |
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private $username; |
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/** |
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* Constructor. |
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*/ |
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protected function __construct() { |
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// NOTHING TO DO. |
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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 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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* Get the paswword. |
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* |
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* @return string Returns the password. |
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*/ |
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final public function getPassword() { |
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return $this->password; |
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} |
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/** |
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* Get the username. |
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* |
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* @return string Returns the username. |
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*/ |
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final public function getUsername() { |
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return $this->username; |
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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 $fields The fields [field => value]. |
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* @return string Returns the INSERT SQL query. |
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*/ |
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final public function prepareInsert($table, array $fields) { |
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// Initialize the SQL. |
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$sql = []; |
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$sql[] = "INSERT INTO "; |
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$sql[] = $table; |
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$sql[] = " ("; |
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$sql[] = implode(", ", array_keys($fields)); |
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$sql[] = ") VALUES ("; |
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$sql[] = implode(", ", array_values($fields)); |
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$sql[] = ")"; |
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// Return the SQL. |
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return implode("", $sql); |
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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 $database The database. |
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* @return AbstractDatabase Returns the database. |
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*/ |
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final public function setDatabase($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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* Set the password. |
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* |
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* @param string $password The password. |
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* @return AbstractDatabase Returns the database. |
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*/ |
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final public function setPassword($password) { |
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$this->password = $password; |
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return $this; |
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} |
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/** |
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* Set the username. |
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* |
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* @param string $username The username. |
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* @return AbstractDatabase Returns the database. |
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*/ |
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final public function setUsername($username) { |
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$this->username = $username; |
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return $this; |
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} |
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} |
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webeweb /
core-library
