<?php

/**

 * Zend Framework

 *

 * LICENSE

 *

 * This source file is subject to the new BSD license that is bundled

 * with this package in the file LICENSE.txt.

 * It is also available through the world-wide-web at this URL:

 * http://framework.zend.com/license/new-bsd

 * If you did not receive a copy of the license and are unable to

 * obtain it through the world-wide-web, please send an email

 * to license@zend.com so we can send you a copy immediately.

 *

 * @category   Zend

 * @package    Zend_Ldap

 * @subpackage Schema

 * @copyright  Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)

 * @license    http://framework.zend.com/license/new-bsd     New BSD License

 * @version    $Id: Item.php 20096 2010-01-06 02:05:09Z bkarwin $

 */

/**

 * Zend_Ldap_Node_Schema_Item provides a base implementation for managing schema

 * items like objectClass and attribute.

 *

 * @category   Zend

 * @package    Zend_Ldap

 * @subpackage Schema

 * @copyright  Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)

 * @license    http://framework.zend.com/license/new-bsd     New BSD License

 */

abstract class Zend_Ldap_Node_Schema_Item implements ArrayAccess, Countable

{

    /**

     * The underlying data

     *

     * @var array

     */

    protected $_data;

    /**

     * Constructor.

     *

     * @param array $data

     */

    public function __construct(array $data)

    {

        $this->setData($data);

    }

    /**

     * Sets the data

     *

     * @param  array $data

     * @return Zend_Ldap_Node_Schema_Item Provides a fluid interface

     */

    public function setData(array $data)

    {

        $this->_data = $data;

        return $this;

    }

    /**

     * Gets the data

     *

     * @return array

     */

    public function getData()

    {

        return $this->_data;

    }

    /**

     * Gets a specific attribute from this item

     *

     * @param  string $name

     * @return mixed

     */

    public function __get($name)

    {

        if (array_key_exists($name, $this->_data)) {

            return $this->_data[$name];

        } else {

            return null;

        }

    }

    /**

     * Checks whether a specific attribute exists.

     *

     * @param  string $name

     * @return boolean

     */

    public function __isset($name)

    {

        return (array_key_exists($name, $this->_data));

    }

    /**

     * Always throws BadMethodCallException

     * Implements ArrayAccess.

     *

     * This method is needed for a full implementation of ArrayAccess

     *

     * @param  string $name

     * @param  mixed $value

     * @return null

     * @throws BadMethodCallException

     */

    public function offsetSet($name, $value)

    {

        throw new BadMethodCallException();

    }

    /**

     * Gets a specific attribute from this item

     *

     * @param  string $name

     * @return mixed

     */

    public function offsetGet($name)

    {

        return $this->__get($name);

    }

    /**

     * Always throws BadMethodCallException

     * Implements ArrayAccess.

     *

     * This method is needed for a full implementation of ArrayAccess

     *

     * @param  string $name

     * @return null

     * @throws BadMethodCallException

     */

    public function offsetUnset($name)

    {

        throw new BadMethodCallException();

    }

    /**

     * Checks whether a specific attribute exists.

     *

     * @param  string $name

     * @return boolean

     */

    public function offsetExists($name)

    {

        return $this->__isset($name);

    }

    /**

     * Returns the number of attributes.

     * Implements Countable

     *

     * @return int

     */

    public function count()

    {

        return count($this->_data);

    }

}