File indexing completed on 2024-12-22 05:36:37

 <?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_Dojo
  * @copyright  Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
  * @license    http://framework.zend.com/license/new-bsd     New BSD License
  * @version    $Id$
  */
 
 /**
  * dojo.data support for Zend Framework
  *
  * @uses       ArrayAccess
  * @uses       Iterator
  * @uses       Countable
  * @package    Zend_Dojo
  * @copyright  Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
  * @license    http://framework.zend.com/license/new-bsd     New BSD License
  */
 class Zend_Dojo_Data implements ArrayAccess,Iterator,Countable
 {
     /**
      * Identifier field of item
      * @var string|int
      */
     protected $_identifier;
 
     /**
      * Collected items
      * @var array
      */
     protected $_items = array();
 
     /**
      * Label field of item
      * @var string
      */
     protected $_label;
 
     /**
      * Data container metadata
      * @var array
      */
     protected $_metadata = array();
 
     /**
      * Constructor
      *
      * @param  string|null $identifier
      * @param  array|Traversable|null $items
      * @param  string|null $label
      * @return void
      */
     public function __construct($identifier = null, $items = null, $label = null)
     {
         if (null !== $identifier) {
             $this->setIdentifier($identifier);
         }
         if (null !== $items) {
             $this->setItems($items);
         }
         if (null !== $label) {
             $this->setLabel($label);
         }
     }
 
     /**
      * Set the items to collect
      *
      * @param array|Traversable $items
      * @return Zend_Dojo_Data
      */
     public function setItems($items)
     {
         $this->clearItems();
         return $this->addItems($items);
     }
 
     /**
      * Set an individual item, optionally by identifier (overwrites)
      *
      * @param  array|object $item
      * @param  string|null $identifier
      * @return Zend_Dojo_Data
      */
     public function setItem($item, $id = null)
     {
         $item = $this->_normalizeItem($item, $id);
         $this->_items[$item['id']] = $item['data'];
         return $this;
     }
 
     /**
      * Add an individual item, optionally by identifier
      *
      * @param  array|object $item
      * @param  string|null $id
      * @return Zend_Dojo_Data
      */
     public function addItem($item, $id = null)
     {
         $item = $this->_normalizeItem($item, $id);
 
         if ($this->hasItem($item['id'])) {
             // require_once 'Zend/Dojo/Exception.php';
             throw new Zend_Dojo_Exception('Overwriting items using addItem() is not allowed');
         }
 
         $this->_items[$item['id']] = $item['data'];
 
         return $this;
     }
 
     /**
      * Add multiple items at once
      *
      * @param  array|Traversable $items
      * @return Zend_Dojo_Data
      */
     public function addItems($items)
     {
         if (!is_array($items) && (!is_object($items) || !($items instanceof Traversable))) {
             // require_once 'Zend/Dojo/Exception.php';
             throw new Zend_Dojo_Exception('Only arrays and Traversable objects may be added to ' . __CLASS__);
         }
 
         foreach ($items as $item) {
             $this->addItem($item);
         }
 
         return $this;
     }
 
     /**
      * Get all items as an array
      *
      * Serializes items to arrays.
      *
      * @return array
      */
     public function getItems()
     {
         return $this->_items;
     }
 
     /**
      * Does an item with the given identifier exist?
      *
      * @param  string|int $id
      * @return bool
      */
     public function hasItem($id)
     {
         return array_key_exists($id, $this->_items);
     }
 
     /**
      * Retrieve an item by identifier
      *
      * Item retrieved will be flattened to an array.
      *
      * @param  string $id
      * @return array
      */
     public function getItem($id)
     {
         if (!$this->hasItem($id)) {
             return null;
         }
 
         return $this->_items[$id];
     }
 
     /**
      * Remove item by identifier
      *
      * @param  string $id
      * @return Zend_Dojo_Data
      */
     public function removeItem($id)
     {
         if ($this->hasItem($id)) {
             unset($this->_items[$id]);
         }
 
         return $this;
     }
 
     /**
      * Remove all items at once
      *
      * @return Zend_Dojo_Data
      */
     public function clearItems()
     {
         $this->_items = array();
         return $this;
     }
 
 
     /**
      * Set identifier for item lookups
      *
      * @param  string|int|null $identifier
      * @return Zend_Dojo_Data
      */
     public function setIdentifier($identifier)
     {
         if (null === $identifier) {
             $this->_identifier = null;
         } elseif (is_string($identifier)) {
             $this->_identifier = $identifier;
         } elseif (is_numeric($identifier)) {
             $this->_identifier = (int) $identifier;
         } else {
             // require_once 'Zend/Dojo/Exception.php';
             throw new Zend_Dojo_Exception('Invalid identifier; please use a string or integer');
         }
 
         return $this;
     }
 
     /**
      * Retrieve current item identifier
      *
      * @return string|int|null
      */
     public function getIdentifier()
     {
         return $this->_identifier;
     }
 
 
     /**
      * Set label to use for displaying item associations
      *
      * @param  string|null $label
      * @return Zend_Dojo_Data
      */
     public function setLabel($label)
     {
         if (null === $label) {
             $this->_label = null;
         } else {
             $this->_label = (string) $label;
         }
         return $this;
     }
 
     /**
      * Retrieve item association label
      *
      * @return string|null
      */
     public function getLabel()
     {
         return $this->_label;
     }
 
     /**
      * Set metadata by key or en masse
      *
      * @param  string|array $spec
      * @param  mixed $value
      * @return Zend_Dojo_Data
      */
     public function setMetadata($spec, $value = null)
     {
         if (is_string($spec) && (null !== $value)) {
             $this->_metadata[$spec] = $value;
         } elseif (is_array($spec)) {
             foreach ($spec as $key => $value) {
                 $this->setMetadata($key, $value);
             }
         }
         return $this;
     }
 
     /**
      * Get metadata item or all metadata
      *
      * @param  null|string $key Metadata key when pulling single metadata item
      * @return mixed
      */
     public function getMetadata($key = null)
     {
         if (null === $key) {
             return $this->_metadata;
         }
 
         if (array_key_exists($key, $this->_metadata)) {
             return $this->_metadata[$key];
         }
 
         return null;
     }
 
     /**
      * Clear individual or all metadata item(s)
      *
      * @param  null|string $key
      * @return Zend_Dojo_Data
      */
     public function clearMetadata($key = null)
     {
         if (null === $key) {
             $this->_metadata = array();
         } elseif (array_key_exists($key, $this->_metadata)) {
             unset($this->_metadata[$key]);
         }
         return $this;
     }
 
     /**
      * Load object from array
      *
      * @param  array $data
      * @return Zend_Dojo_Data
      */
     public function fromArray(array $data)
     {
         if (array_key_exists('identifier', $data)) {
             $this->setIdentifier($data['identifier']);
         }
         if (array_key_exists('label', $data)) {
             $this->setLabel($data['label']);
         }
         if (array_key_exists('items', $data) && is_array($data['items'])) {
             $this->setItems($data['items']);
         } else {
             $this->clearItems();
         }
         return $this;
     }
 
     /**
      * Load object from JSON
      *
      * @param  string $json
      * @return Zend_Dojo_Data
      */
     public function fromJson($json)
     {
         if (!is_string($json)) {
             // require_once 'Zend/Dojo/Exception.php';
             throw new Zend_Dojo_Exception('fromJson() expects JSON input');
         }
         // require_once 'Zend/Json.php';
         $data = Zend_Json::decode($json);
         return $this->fromArray($data);
     }
 
     /**
      * Seralize entire data structure, including identifier and label, to array
      *
      * @return array
      */
     public function toArray()
     {
         if (null === ($identifier = $this->getIdentifier())) {
             // require_once 'Zend/Dojo/Exception.php';
             throw new Zend_Dojo_Exception('Serialization requires that an identifier be present in the object; first call setIdentifier()');
         }
 
         $array = array(
             'identifier' => $identifier,
             'items'      => array_values($this->getItems()),
         );
 
         $metadata = $this->getMetadata();
         if (!empty($metadata)) {
             foreach ($metadata as $key => $value) {
                 $array[$key] = $value;
             }
         }
 
         if (null !== ($label = $this->getLabel())) {
             $array['label'] = $label;
         }
 
         return $array;
     }
 
     /**
      * Serialize to JSON (dojo.data format)
      *
      * @return string
      */
     public function toJson()
     {
         // require_once 'Zend/Json.php';
         return Zend_Json::encode($this->toArray());
     }
 
     /**
      * Serialize to string (proxy to {@link toJson()})
      *
      * @return string
      */
     public function __toString()
     {
         return $this->toJson();
     }
 
     /**
      * ArrayAccess: does offset exist?
      *
      * @param  string|int $offset
      * @return bool
      */
     public function offsetExists($offset)
     {
         return (null !== $this->getItem($offset));
     }
 
     /**
      * ArrayAccess: retrieve by offset
      *
      * @param  string|int $offset
      * @return array
      */
     public function offsetGet($offset)
     {
         return $this->getItem($offset);
     }
 
     /**
      * ArrayAccess: set value by offset
      *
      * @param  string $offset
      * @param  array|object|null $value
      * @return void
      */
     public function offsetSet($offset, $value)
     {
         $this->setItem($value, $offset);
     }
 
     /**
      * ArrayAccess: unset value by offset
      *
      * @param  string $offset
      * @return void
      */
     public function offsetUnset($offset)
     {
         $this->removeItem($offset);
     }
 
     /**
      * Iterator: get current value
      *
      * @return array
      */
     public function current()
     {
         return current($this->_items);
     }
 
     /**
      * Iterator: get current key
      *
      * @return string|int
      */
     public function key()
     {
         return key($this->_items);
     }
 
     /**
      * Iterator: get next item
      *
      * @return void
      */
     public function next()
     {
         return next($this->_items);
     }
 
     /**
      * Iterator: rewind to first value in collection
      *
      * @return void
      */
     public function rewind()
     {
         return reset($this->_items);
     }
 
     /**
      * Iterator: is item valid?
      *
      * @return bool
      */
     public function valid()
     {
         return (bool) $this->current();
     }
 
     /**
      * Countable: how many items are present
      *
      * @return int
      */
     public function count()
     {
         return count($this->_items);
     }
 
     /**
      * Normalize an item to attach to the collection
      *
      * @param  array|object $item
      * @param  string|int|null $id
      * @return array
      */
     protected function _normalizeItem($item, $id)
     {
         if (null === ($identifier = $this->getIdentifier())) {
             // require_once 'Zend/Dojo/Exception.php';
             throw new Zend_Dojo_Exception('You must set an identifier prior to adding items');
         }
 
         if (!is_object($item) && !is_array($item)) {
             // require_once 'Zend/Dojo/Exception.php';
             throw new Zend_Dojo_Exception('Only arrays and objects may be attached');
         }
 
         if (is_object($item)) {
             if (method_exists($item, 'toArray')) {
                 $item = $item->toArray();
             } else {
                 $item = get_object_vars($item);
             }
         }
 
         if ((null === $id) && !array_key_exists($identifier, $item)) {
             // require_once 'Zend/Dojo/Exception.php';
             throw new Zend_Dojo_Exception('Item must contain a column matching the currently set identifier');
         } elseif (null === $id) {
             $id = $item[$identifier];
         } else {
             $item[$identifier] = $id;
         }
 
         return array(
             'id'   => $id,
             'data' => $item,
         );
     }
 }