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<?php declare(strict_types=1); |
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/** |
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* Query |
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* |
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* SQL Query Builder / Database Abstraction Layer |
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* |
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* PHP version 7.1 |
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* |
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* @package Query |
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* @author Timothy J. Warren <[email protected]> |
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* @copyright 2012 - 2018 Timothy J. Warren |
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* @license http://www.opensource.org/licenses/mit-license.html MIT License |
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* @link https://git.timshomepage.net/aviat4ion/Query |
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*/ |
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namespace Query\Drivers\Sqlite; |
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use PDO; |
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use Query\Drivers\AbstractDriver; |
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/** |
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* SQLite specific class |
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*/ |
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class Driver extends AbstractDriver { |
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/** |
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* SQLite has a truncate optimization, |
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* but no support for the actual keyword |
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* @var boolean |
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*/ |
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protected $hasTruncate = FALSE; |
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/** |
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* Open SQLite Database |
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* |
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* @param string $dsn |
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* @param string $user |
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* @param string $pass |
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* @param array $driverOptions |
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*/ |
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public function __construct(string $dsn, string $user=NULL, string $pass=NULL, array $driverOptions=[]) |
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{ |
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if (strpos($dsn, 'sqlite:') === FALSE) |
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{ |
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$dsn = "sqlite:{$dsn}"; |
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} |
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parent::__construct($dsn, $user, $pass); |
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} |
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/** |
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* List tables for the current database |
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* |
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* @return mixed |
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*/ |
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public function getTables(): array |
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{ |
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$sql = $this->sql->tableList(); |
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$res = $this->query($sql); |
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return dbFilter($res->fetchAll(PDO::FETCH_ASSOC), 'name'); |
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} |
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/** |
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* Retrieve foreign keys for the table |
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* |
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* @param string $table |
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* @return array |
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*/ |
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public function getFks($table): array |
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{ |
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$returnRows = []; |
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foreach(parent::getFks($table) as $row) |
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{ |
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$returnRows[] = [ |
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'child_column' => $row['from'], |
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'parent_table' => $row['table'], |
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'parent_column' => $row['to'], |
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'update' => $row['on_update'], |
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'delete' => $row['on_delete'] |
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]; |
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} |
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return $returnRows; |
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} |
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/** |
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* Create sql for batch insert |
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* |
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* @codeCoverageIgnore |
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* @param string $table |
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* @param array $data |
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* @return array |
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*/ |
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public function insertBatch(string $table, array $data=[]): array |
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{ |
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// If greater than version 3.7.11, supports the same syntax as |
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// MySQL and Postgres |
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if (version_compare($this->getAttribute(PDO::ATTR_SERVER_VERSION), '3.7.11', '>=')) |
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{ |
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return parent::insertBatch($table, $data); |
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} |
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// -------------------------------------------------------------------------- |
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// Otherwise, do a union query as an analogue to a 'proper' batch insert |
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// -------------------------------------------------------------------------- |
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// Each member of the data array needs to be an array |
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if ( ! \is_array(current($data))) |
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{ |
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return NULL; |
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} |
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// Start the block of sql statements |
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$table = $this->quoteTable($table); |
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$sql = "INSERT INTO {$table} \n"; |
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// Create a key-value mapping for each field |
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$first = array_shift($data); |
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$cols = []; |
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foreach($first as $colname => $datum) |
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{ |
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$cols[] = $this->_quote($datum) . ' AS ' . $this->quoteIdent($colname); |
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} |
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$sql .= 'SELECT ' . implode(', ', $cols) . "\n"; |
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foreach($data as $union) |
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{ |
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$vals = array_map([$this, 'quote'], $union); |
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$sql .= 'UNION SELECT ' . implode(',', $vals) . "\n"; |
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} |
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return [$sql, NULL]; |
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} |
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} |
aviat4ion /
Query
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