Source of file Driver.php

<?php

/**

 * Query

 *

 * Free Query Builder / Database Abstraction Layer

 *

 * @package		Query

 * @author		Timothy J. Warren

 * @copyright	Copyright (c) 2012 - 2014

 * @link 		https://github.com/aviat4ion/Query

 * @license		http://philsturgeon.co.uk/code/dbad-license

 */

// --------------------------------------------------------------------------

namespace Query\Drivers\Sqlite;

/**

 * SQLite specific class

 *

 * @package Query

 * @subpackage Drivers

 */

class Driver extends \Query\AbstractDriver {

	/**

	 * Reference to the last executed sql query

	 *

	 * @var PDOStatement

	 */

	protected $statement;

	/**

	 * SQLite has a truncate optimization,

	 * but no support for the actual keyword

	 * @var bool

	 */

	protected $has_truncate = FALSE;

	/**

	 * Open SQLite Database

	 *

	 * @param string $dsn

	 * @param string $user

	 * @param string $pass

	 * @param array $driver_options

	 */

	public function __construct($dsn, $user=NULL, $pass=NULL, array $driver_options=array())

	{

		if (strpos($dsn, 'sqlite:') === FALSE) $dsn = "sqlite:{$dsn}";

		parent::__construct($dsn, $user, $pass);

	}

	// --------------------------------------------------------------------------

	/**

	 * List tables for the current database

	 *

	 * @return mixed

	 */

	public function get_tables()

	{

		$sql = $this->sql->table_list();

		$res = $this->query($sql);

		return db_filter($res->fetchAll(\PDO::FETCH_ASSOC), 'name');

	}

	// --------------------------------------------------------------------------

	/**

	 * Retrieve foreign keys for the table

	 *

	 * @param string $table

	 * @return array

	 */

	public function get_fks($table)

	{

		$return_rows = array();

		foreach(parent::get_fks($table) as $row)

		{

			$return_rows[] = array(

				'child_column' => $row['from'],

				'parent_table' => $row['table'],

				'parent_column' => $row['to'],

				'update' => $row['on_update'],

				'delete' => $row['on_delete']

			);

		}

		return $return_rows;

	}

	// --------------------------------------------------------------------------

	/**

	 * Create sql for batch insert

	 *

	 * @codeCoverageIgnore

	 * @param string $table

	 * @param array $data

	 * @return string

	 */

	public function insert_batch($table, $data=array())

	{

		// If greater than version 3.7.11, supports the same syntax as

		// MySQL and Postgres

		if (version_compare($this->getAttribute(\PDO::ATTR_SERVER_VERSION), '3.7.11', '>='))

		{

			return parent::insert_batch($table, $data);

		}

		// --------------------------------------------------------------------------

		// Otherwise, do a union query as an analogue to a 'proper' batch insert

		// --------------------------------------------------------------------------

		// Each member of the data array needs to be an array

		if ( ! is_array(current($data))) return NULL;

		// Start the block of sql statements

		$table = $this->quote_table($table);

		$sql = "INSERT INTO {$table} \n";

		// Create a key-value mapping for each field

		$first = array_shift($data);

		$cols = array();

		foreach($first as $colname => $datum)

		{

			$cols[] = $this->_quote($datum) . ' AS ' . $this->quote_ident($colname);

		}

		$sql .= "SELECT " . implode(', ', $cols) . "\n";

		foreach($data as $union)

		{

			$vals = array_map(array($this, 'quote'), $union);

			$sql .= "UNION SELECT " . implode(',', $vals) . "\n";

		}

		return array($sql, NULL);

	}

}

//End of sqlite_driver.php