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<?php
/* --------------------------------------------------------------
   CustomerLastname.inc.php 2015-01-30 gm
   Gambio GmbH
   http://www.gambio.de
   Copyright (c) 2014 Gambio GmbH
   Released under the GNU General Public License (Version 2)
   [http://www.gnu.org/licenses/gpl-2.0.html]
   --------------------------------------------------------------
*/

MainFactory::load_class('CustomerLastnameInterface');
require_once __DIR__ . '/../../../../Shared/Utility/StringUtilityTrait.inc.php';

/**
 * Value Object
 *
 * Class CustomerLastname
 *
 * Represents a customer lastname
 *
 * @category   System
 * @package    Customer
 * @subpackage ValueObjects
 * @implements CustomerLastnameInterface
 */
class CustomerLastname implements CustomerLastnameInterface
{
    use StringUtilityTrait;
    
    /**
     * Customer's last name.
     * @var string
     */
    protected $lastname;


    /**
     * Constructor for the class CustomerLastname.
     *
     * Validates the length and the data type of the customer last name.
     *
     * @param string $p_lastname Customer's last name.
     *
     * @throws InvalidArgumentException If $p_lastname is not a string.
     * @throws LengthException If $p_lastname contains more characters than 64.
     */
    public function __construct($p_lastname)
    {
        if(!is_string($p_lastname))
        {
            throw new InvalidArgumentException('$p_lastname is not a string');
        }

        $dbFieldLength = 64;
        $lastname      = trim($p_lastname);

        if($this->strlenWrapper($lastname) > $dbFieldLength)
        {
            throw new LengthException('$lastname is longer than ' . $dbFieldLength . ' characters VARCHAR(64)');
        }

        $this->lastname = trim($p_lastname);
    }


    /**
     * Returns the equivalent string value.
     * @return string Equivalent string value.
     */
    public function __toString()
    {
        return $this->lastname;
    }
}