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<?php |
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/** |
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* This file is part of the Hal library |
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* |
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* (c) Ben Longden <[email protected] |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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* |
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* @package Nocarrier |
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*/ |
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namespace Nocarrier; |
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/** |
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* The Hal document class |
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* |
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* @package Nocarrier |
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* @author Ben Longden <[email protected]> |
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*/ |
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class Hal |
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{ |
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/** |
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* The uri represented by this representation. |
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* |
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* @var string |
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*/ |
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protected $uri; |
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/** |
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* The data for this resource. An associative array of key value pairs. |
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* |
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* array( |
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* 'price' => 30.00, |
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* 'colour' => 'blue' |
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* ) |
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* |
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* @var array |
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*/ |
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protected $data; |
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/** |
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* An array of embedded Hal objects representing embedded resources. |
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* |
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* @var array |
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*/ |
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protected $resources = array(); |
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/** |
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* A collection of \Nocarrier\HalLink objects keyed by the link relation to |
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* this resource. |
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* |
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* array( |
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* 'next' => [HalLink] |
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* ) |
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* |
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* @var array |
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*/ |
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protected $links = null; |
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/** |
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* A list of rel types for links that will force a rel type to array for one element |
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* |
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* @var array |
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*/ |
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protected $arrayLinkRels = array(); |
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/** |
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* A list of rel types for links that will force a rel type to array for one element |
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* |
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* @var array |
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*/ |
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protected $arrayResourceRels = array(); |
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/** |
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* Whether xml attribute markers should be stripped when rendering |
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* |
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* @var string |
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*/ |
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protected $shouldStripAttributes = true; |
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/** |
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* Construct a new Hal object from an array of data. You can markup the |
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* $data array with certain keys and values in order to affect the |
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* generated JSON or XML documents if required to do so. |
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* |
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* '@' prefix on any array key will cause the value to be set as an |
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* attribute on the XML element generated by the parent. i.e, array('x' => |
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* array('@href' => 'http://url')) will yield <x href='http://url'></x> in |
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* the XML representation. The @ prefix will be stripped from the JSON |
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* representation. |
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* |
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* Specifying the key 'value' will cause the value of this key to be set as |
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* the value of the XML element instead of a child. i.e, array('x' => |
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* array('value' => 'example')) will yield <x>example</x> in the XML |
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* representation. This will not affect the JSON representation. |
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* |
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* @param mixed $uri |
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* @param array|Traversable $data |
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* |
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* @throws \RuntimeException |
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*/ |
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public function __construct($uri = null, $data = array()) |
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{ |
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$this->uri = $uri; |
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if (!is_array($data) && !$data instanceof \Traversable) { |
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throw new \RuntimeException( |
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'The $data parameter must be an array or an object implementing the Traversable interface.'); |
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} |
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$this->data = $data; |
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$this->links = new HalLinkContainer(); |
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} |
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/** |
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* Decode a application/hal+json document into a Nocarrier\Hal object. |
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* |
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* @param string $data |
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* @param int $depth |
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* @static |
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* @access public |
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* @return \Nocarrier\Hal |
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*/ |
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public static function fromJson($data, $depth = 0) |
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{ |
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return JsonHalFactory::fromJson(new static(), $data, $depth); |
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} |
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/** |
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* Decode a application/hal+xml document into a Nocarrier\Hal object. |
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* |
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* @param int $depth |
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* |
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* @static |
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* @access public |
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* @return \Nocarrier\Hal |
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*/ |
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public static function fromXml($data, $depth = 0) |
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{ |
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return XmlHalFactory::fromXml(new static(), $data, $depth); |
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} |
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/** |
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* Add a link to the resource, identified by $rel, located at $uri. |
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* |
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* @param string $rel |
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* @param string $uri |
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* @param array $attributes |
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* Other attributes, as defined by HAL spec and RFC 5988. |
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* @param bool $forceArray whether to force a rel to be an array if it has only one entry |
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* @return \Nocarrier\Hal |
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*/ |
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public function addLink($rel, $uri, array $attributes = array(), $forceArray = false) |
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{ |
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return $this->addHalLink($rel, new HalLink($uri, $attributes), $forceArray); |
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} |
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/** |
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* Add a link instance to the resource, identified by $rel. |
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* |
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* @param string $rel |
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* @param HalLink $link |
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* @param bool $forceArray whether to force a rel to be an array if it has only one entry |
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* @return \Nocarrier\Hal |
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*/ |
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public function addHalLink($rel, HalLink $link, $forceArray = false) |
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{ |
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$this->links[$rel][] = $link; |
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if ($forceArray) { |
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$this->arrayLinkRels[] = $rel; |
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} |
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return $this; |
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} |
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/** |
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* Add an embedded resource, identified by $rel and represented by $resource. |
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* |
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* @param string $rel |
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* @param \Nocarrier\Hal $resource |
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* |
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* @return \Nocarrier\Hal |
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*/ |
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public function addResource($rel, \Nocarrier\Hal $resource = null, $forceArray = true) |
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{ |
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if (!is_string($rel)) { |
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throw new \InvalidArgumentException( |
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"Argument 1 passed to Hal::addResource() must be a string describing the resource relationship" |
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); |
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} |
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$this->resources[$rel][] = $resource; |
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if ($forceArray) { |
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$this->arrayResourceRels[] = $rel; |
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} |
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return $this; |
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} |
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/** |
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* Set an embedded resource, identified by $rel and represented by $resource |
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* |
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* Using this method signifies that $rel will only ever be a single object |
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* (only really relevant to JSON rendering) |
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* |
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* @param string $rel |
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* @param Hal $resource |
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*/ |
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public function setResource($rel, $resource) |
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{ |
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if (is_array($resource)) { |
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foreach ($resource as $r) { |
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$this->addResource($rel, $r); |
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} |
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return $this; |
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} |
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if (!($resource instanceof Hal)) { |
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throw new \InvalidArgumentException('$resource should be of type array or Nocarrier\Hal'); |
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} |
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$this->resources[$rel][] = $resource; |
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return $this; |
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} |
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/** |
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* Set resource's data |
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*/ |
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public function setData(Array $data = null) |
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{ |
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$this->data = $data; |
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return $this; |
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} |
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/** |
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* Return an array of data (key => value pairs) representing this resource. |
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* |
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* @param null|string data key |
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* @return array |
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*/ |
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public function getData($key = null) |
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{ |
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if ($key) { |
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return isset($this->data[$key]) ? $this->data[$key] : array(); |
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} |
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return $this->data; |
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} |
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/** |
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* Return an array of Nocarrier\HalLink objects representing resources |
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* related to this one. |
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* |
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* @return array A collection of \Nocarrier\HalLink |
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*/ |
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public function getLinks() |
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{ |
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return $this->links; |
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} |
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/** |
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* Lookup and return an array of HalLink objects for a given relation. |
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* Will also resolve CURIE rels if required. |
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* |
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* @param string $rel The link relation required |
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* @return array|bool |
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* Array of HalLink objects if found. Otherwise false. |
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*/ |
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public function getLink($rel) |
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{ |
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return $this->links->get($rel); |
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} |
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/** |
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* Return an array of Nocarrier\Hal objected embedded in this one. |
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* |
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* @return array |
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*/ |
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public function getResources() |
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{ |
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$resources = array_map(function ($resource) { |
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return is_array($resource) ? $resource : array($resource); |
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}, $this->getRawResources()); |
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return $resources; |
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} |
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/** |
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* Return an array of Nocarrier\Hal objected embedded in this one. |
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* |
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* @return Hal |
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*/ |
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public function getResource($rel) |
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{ |
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$resources = $this->getResources(); |
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if (isset($resources[$rel])) { |
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return $resources[$rel]; |
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} |
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return null; |
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} |
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/** |
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* Return an array of Nocarrier\Hal objected embedded in this one. Each key |
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* may contain an array of resources, or a single resource. For a |
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* consistent approach, use getResources |
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* |
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* @return array |
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*/ |
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public function getRawResources() |
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{ |
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return $this->resources; |
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} |
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/** |
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* Get the first resource for a given rel. Useful if you're only expecting |
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* one resource, or you don't care about subsequent resources |
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* |
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* @return Hal |
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*/ |
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public function getFirstResource($rel) |
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{ |
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$resource = $this->getResource($rel); |
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if ($resource) { |
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return $resource[0]; |
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} |
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return null; |
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} |
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/** |
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* Get the first link for a given rel. Useful if you're only expecting |
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* one link, or you don't care about subsequent links |
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* |
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* @return HalLink |
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*/ |
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public function getFirstLink($rel) |
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{ |
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$link = $this->getLink($rel); |
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348
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|
|
if ($link) { |
|
349
|
|
|
return $link[0]; |
|
350
|
|
|
} |
|
351
|
|
|
|
|
352
|
|
|
return null; |
|
353
|
|
|
} |
|
354
|
|
|
|
|
355
|
|
|
/** |
|
356
|
|
|
* Set resource's URI |
|
357
|
|
|
*/ |
|
358
|
|
|
public function setUri($uri) |
|
359
|
|
|
{ |
|
360
|
|
|
$this->uri = $uri; |
|
361
|
|
|
return $this; |
|
362
|
|
|
} |
|
363
|
|
|
|
|
364
|
|
|
/** |
|
365
|
|
|
* Get resource's URI. |
|
366
|
|
|
* |
|
367
|
|
|
* @return mixed |
|
368
|
|
|
*/ |
|
369
|
|
|
public function getUri() |
|
370
|
|
|
{ |
|
371
|
|
|
return $this->uri; |
|
372
|
|
|
} |
|
373
|
|
|
|
|
374
|
|
|
/** |
|
375
|
|
|
* Return the current object in a application/hal+json format (links and |
|
376
|
|
|
* resources). |
|
377
|
|
|
* |
|
378
|
|
|
* @param bool $pretty |
|
379
|
|
|
* Enable pretty-printing. |
|
380
|
|
|
* @param bool $encode |
|
381
|
|
|
* Run through json_encode |
|
382
|
|
|
* @return string |
|
383
|
|
|
*/ |
|
384
|
|
|
public function asJson($pretty = false, $encode = true) |
|
385
|
|
|
{ |
|
386
|
|
|
$renderer = new HalJsonRenderer(); |
|
387
|
|
|
|
|
388
|
|
|
return $renderer->render($this, $pretty, $encode); |
|
389
|
|
|
} |
|
390
|
|
|
|
|
391
|
|
|
/** |
|
392
|
|
|
* Return the current object in a application/hal+xml format (links and |
|
393
|
|
|
* resources). |
|
394
|
|
|
* |
|
395
|
|
|
* @param bool $pretty Enable pretty-printing |
|
396
|
|
|
* @return string |
|
397
|
|
|
*/ |
|
398
|
|
|
public function asXml($pretty = false) |
|
399
|
|
|
{ |
|
400
|
|
|
$renderer = new HalXmlRenderer(); |
|
401
|
|
|
|
|
402
|
|
|
return $renderer->render($this, $pretty); |
|
403
|
|
|
} |
|
404
|
|
|
|
|
405
|
|
|
/** |
|
406
|
|
|
* Create a CURIE link template, used for abbreviating custom link |
|
407
|
|
|
* relations. |
|
408
|
|
|
* |
|
409
|
|
|
* e.g, |
|
410
|
|
|
* $hal->addCurie('acme', 'http://.../rels/{rel}'); |
|
411
|
|
|
* $hal->addLink('acme:test', 'http://.../test'); |
|
412
|
|
|
* |
|
413
|
|
|
* @param string $name |
|
414
|
|
|
* @param string $uri |
|
415
|
|
|
* |
|
416
|
|
|
* @return \Nocarrier\Hal |
|
417
|
|
|
*/ |
|
418
|
|
|
public function addCurie($name, $uri) |
|
419
|
|
|
{ |
|
420
|
|
|
return $this->addLink('curies', $uri, array('name' => $name, 'templated' => true)); |
|
421
|
|
|
} |
|
422
|
|
|
|
|
423
|
|
|
/** |
|
424
|
|
|
* Get a list of rel types for links that will be forced to an array for one element |
|
425
|
|
|
*/ |
|
426
|
|
|
public function getArrayLinkRels() |
|
427
|
|
|
{ |
|
428
|
|
|
return $this->arrayLinkRels; |
|
429
|
|
|
} |
|
430
|
|
|
|
|
431
|
|
|
/** |
|
432
|
|
|
* Get a list of rel types for resources that will be forced to an array for one element |
|
433
|
|
|
*/ |
|
434
|
|
|
public function getArrayResourceRels() |
|
435
|
|
|
{ |
|
436
|
|
|
return $this->arrayResourceRels; |
|
437
|
|
|
} |
|
438
|
|
|
|
|
439
|
|
|
public function getShouldStripAttributes() |
|
440
|
|
|
{ |
|
441
|
|
|
return $this->shouldStripAttributes; |
|
442
|
|
|
} |
|
443
|
|
|
|
|
444
|
|
|
public function setShouldStripAttributes($shouldStripAttributes) |
|
445
|
|
|
{ |
|
446
|
|
|
$this->shouldStripAttributes = $shouldStripAttributes; |
|
447
|
|
|
return $this; |
|
448
|
|
|
} |
|
449
|
|
|
|
|
450
|
|
|
} |
|
451
|
|
|
|
Our type inference engine has found an assignment to a property that is incompatible with the declared type of that property.
Either this assignment is in error or the assigned type should be added to the documentation/type hint for that property..