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<?php
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/**
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* Resource Collection Helper Class
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*/
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namespace Twigger\UnionCloud\API;
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use Twigger\UnionCloud\API\Exception\Resource\ResourceNotFoundException;
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/**
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* Contains a wrapper for an array, providing helpful functions.
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*
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* Designed with classes implementing IResource in mind
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*
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* Class ResourceCollection
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*
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* @package Twigger\UnionCloud\API\Core
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*/
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class ResourceCollection implements \IteratorAggregate
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{
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/**
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* @var array $resources The plain array
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*/
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private $resources = [];
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/**
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* ResourceCollection constructor.
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*/
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public function __construct()
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{
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}
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/**
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* Add an element to the array
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*
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* @param mixed Resource to add
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*
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* @return void
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*/
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public function addResource($resource)
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{
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$this->resources[] = $resource;
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}
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/**
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* Add multiple resources to the collection
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*
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* @param mixed[] $resources Arrays of resources to add to the collection
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*/
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public function addResources($resources)
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{
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$this->resources = array_merge($this->resources, $resources);
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}
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/**
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* Return the plain array as an array
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*
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* @return array
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*/
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public function toArray()
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{
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return $this->resources;
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}
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/**
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* Return a JSON representation of the resource collection
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*
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* @return string|false
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*/
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public function toJson()
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{
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return json_encode($this->resources);
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}
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/**
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* Return the first resource in the collection
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*
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* @return mixed
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*
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* @throws ResourceNotFoundException
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*/
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public function first()
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{
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if (!isset($this->resources[0]))
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{
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throw new ResourceNotFoundException('No resources were found.', 404);
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}
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return $this->resources[0];
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}
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/**
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* Create an array populated by the key in each of the models
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*
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* @param string $key
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*
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* @return array
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*/
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public function pluck($key)
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{
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$values = array();
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foreach($this->resources as $resource)
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{
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if(($value = $resource->$key) !== false)
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{
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$values[] = $value;
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}
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}
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return $values;
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}
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/**
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* Allow iteration over the elements in the collection
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*
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* @return \Traversable|ArrayIterator
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*/
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public function getIterator() {
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return new \ArrayIterator( $this->resources );
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}
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} |
tobytwigger /
nus-unioncloud-api-wrapper
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