RPC Serializer

<?php defined('SYSPATH') or die('No direct script access.');

/**
 * RPC Serializer for Kohana 3.2
 * @author bagnz0r (http://bagnohax.pl)
 */

class RpcSerializer {

    private $builder;
    protected $data;

    /**
     * Constructor will construct data object
     *
     * @param array $data
     * @throws Kohana_Exception
     */
    public function __construct($data, $builder)
    {
        if (!is_array($data))
            throw new Kohana_Exception('$data is not an array');

        $this->data = $data;

        // Load up builder
        $class = 'rpcbuilder' . strtolower($builder);
        $this->builder = new $class;
    }

    /**
     * This function returns serialized string of $this->data
     *
     * @return serialized_string
     */
    public function get()
    {
        return $this->builder->get($this->data);
    }
}