Location: PHPKode > projects > ActiveRecord > php-activerecord/lib/adapters/SqliteAdapter.php
<?php
/**
 * @package ActiveRecord
 */
namespace ActiveRecord;

use PDO;

/**
 * Adapter for SQLite.
 *
 * @package ActiveRecord
 */
class SqliteAdapter extends Connection
{
	protected function __construct($info)
	{
		if (!file_exists($info->host))
			throw new DatabaseException("Could not find sqlite db: $info->host");

		$this->connection = new PDO("sqlite:$info->host",null,null,static::$PDO_OPTIONS);
	}

	public function limit($sql, $offset, $limit)
	{
		$offset = intval($offset);
		$limit = intval($limit);
		return "$sql LIMIT $offset,$limit";
	}

	public function query_column_info($table)
	{
		return $this->query("pragma table_info($table)");
	}

	public function query_for_tables()
	{
		return $this->query("SELECT name FROM sqlite_master");
	}

	public function create_column($column)
	{
		$c = new Column();
		$c->inflected_name	= Inflector::instance()->variablize($column['name']);
		$c->name			= $column['name'];
		$c->nullable		= $column['notnull'] ? false : true;
		$c->pk				= $column['pk'] ? true : false;
		$c->auto_increment	= $column['type'] == 'INTEGER' && $c->pk;

		$column['type'] = preg_replace('/ +/',' ',$column['type']);
		$column['type'] = str_replace(array('(',')'),' ',$column['type']);
		$column['type'] = Utils::squeeze(' ',$column['type']);
		$matches = explode(' ',$column['type']);

		if (!empty($matches))
		{
			$c->raw_type = strtolower($matches[0]);

			if (count($matches) > 1)
				$c->length = intval($matches[1]);
		}

		$c->map_raw_type();

		if ($c->type == Column::DATETIME)
			$c->length = 19;
		elseif ($c->type == Column::DATE)
			$c->length = 10;

		// From SQLite3 docs: The value is a signed integer, stored in 1, 2, 3, 4, 6,
		// or 8 bytes depending on the magnitude of the value.
		// so is it ok to assume it's possible an int can always go up to 8 bytes?
		if ($c->type == Column::INTEGER && !$c->length)
			$c->length = 8;

		$c->default = $c->cast($column['dflt_value'],$this);

		return $c;
	}
};
?>
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