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                <?php  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                namespace Hateoas\Serializer;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Hateoas\Model\Embedded;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Hateoas\Representation\Resource;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Hateoas\Serializer\Metadata\EmbeddedPropertyMetadata;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use JMS\Serializer\SerializationContext;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use JMS\Serializer\XmlSerializationVisitor;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @author Adrien Brault <[email protected]>  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                class XmlHalSerializer implements XmlSerializerInterface  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * {@inheritdoc} | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function serializeLinks(array $links, XmlSerializationVisitor $visitor, SerializationContext $context)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        foreach ($links as $link) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            if ('self' === $link->getRel()) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                foreach ($link->getAttributes() as $key => $value) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                    $visitor->getCurrentNode()->setAttribute($key, $value);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                $visitor->getCurrentNode()->setAttribute('href', $link->getHref()); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                continue;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $linkNode = $visitor->getDocument()->createElement('link'); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $visitor->getCurrentNode()->appendChild($linkNode);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $linkNode->setAttribute('rel', $link->getRel()); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $linkNode->setAttribute('href', $link->getHref()); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            foreach ($link->getAttributes() as $attributeName => $attributeValue) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                $linkNode->setAttribute($attributeName, $attributeValue);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * {@inheritdoc} | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function serializeEmbeddeds(array $embeddeds, XmlSerializationVisitor $visitor, SerializationContext $context)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        foreach ($embeddeds as $embedded) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            if ($embedded->getData() instanceof \Traversable || is_array($embedded->getData())) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                foreach ($embedded->getData() as $data) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                    $entryNode = $visitor->getDocument()->createElement('resource'); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                    $visitor->getCurrentNode()->appendChild($entryNode);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                    $visitor->setCurrentNode($entryNode);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                    $visitor->getCurrentNode()->setAttribute('rel', $embedded->getRel()); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                    $this->acceptDataAndAppend($data, $visitor, $context);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                    $visitor->revertCurrentNode();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                continue;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $entryNode = $visitor->getDocument()->createElement('resource'); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $visitor->getCurrentNode()->appendChild($entryNode);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $visitor->setCurrentNode($entryNode);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $visitor->getCurrentNode()->setAttribute('rel', $embedded->getRel()); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $this->acceptDataAndAppend($embedded->getData(), $visitor, $context);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $visitor->revertCurrentNode();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                View Code Duplication | 
                    private function acceptDataAndAppend($data, XmlSerializationVisitor $visitor, SerializationContext $context)  | 
            
                            
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                    { | 
            
            
                                                        
            
                                    
            
            
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                        $context->pushPropertyMetadata(new EmbeddedPropertyMetadata());  | 
            
            
                                                        
            
                                    
            
            
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                        if (null !== $node = $context->accept($data)) { | 
            
            
                                                        
            
                                    
            
            
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                            $visitor->getCurrentNode()->appendChild($node);  | 
            
            
                                                        
            
                                    
            
            
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                        }  | 
            
            
                                                        
            
                                    
            
            
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                        $context->popPropertyMetadata();  | 
            
            
                                                        
            
                                    
            
            
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                    }  | 
            
            
                                                        
            
                                    
            
            
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                }  | 
            
            
                                                        
            
                                    
            
            
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Duplicated code is one of the most pungent code smells. If you need to duplicate the same code in three or more different places, we strongly encourage you to look into extracting the code into a single class or operation.
You can also find more detailed suggestions in the “Code” section of your repository.