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                <?php  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                namespace SESP;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Onoi\Cache\Cache;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Onoi\Cache\NullCache;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use SMW\Message;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @ingroup SESP  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @license GNU GPL v2+  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @since 2.0  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @author mwjames  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                 */  | 
            
            
                                                                        
                            
            
                                    
            
            
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                class LabelFetcher { | 
            
            
                                                                        
                            
            
                                    
            
            
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                	/**  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	 * Namespace of the cache instance  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	 */  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	const LABEL_CACHE_NAMESPACE = 'sesp:labels';  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	/**  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	 * @var Cache  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	 */  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	private $cache;  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	/**  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	 * @var string  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	 */  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	private $languageCode = 'en';  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	/**  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	 * @var string  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	 */  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	private $labelCacheVersion = 0;  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	/**  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	 * @since 2.0  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	 *  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	 * @param Cache|null $cache  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	 * @param string $languageCode  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	 */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	public function __construct( Cache $cache = null, $languageCode = 'en' ) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		$this->cache = $cache;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		$this->languageCode = $languageCode;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		if ( $this->cache === null ) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			$this->cache = new NullCache();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		}  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                	}  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	/**  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	 * @since 2.0  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	 *  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	 * @param integer|string $labelCacheVersion  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	 */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	public function setLabelCacheVersion( $labelCacheVersion ) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		$this->labelCacheVersion = $labelCacheVersion;  | 
            
                            
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                	}  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	/**  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	 * @since 2.0  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	 *  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	 * @param string $key  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	 *  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	 * @return string  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	 */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	public function getLabel( $key ) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		return Message::get( $key, null, Message::USER_LANGUAGE );  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                	}  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	/**  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	 * @since 2.0  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	 *  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	 * @param PropertyDefinitions $propertyDefinitions  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	 *  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	 * @return array  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	 */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	public function getLabelsFrom( PropertyDefinitions $propertyDefinitions ) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		$hash = smwfCacheKey(  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			self::LABEL_CACHE_NAMESPACE,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			[  | 
            
                            
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                				$propertyDefinitions,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                				$this->languageCode,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                				$this->labelCacheVersion  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			]  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		if ( $this->labelCacheVersion !== false && ( $labels = $this->cache->fetch( $hash ) ) !== false ) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			return $labels;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		}  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		$labels = [];  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		$exifDefinitions = [];  | 
            
                            
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                		foreach ( $propertyDefinitions as $key => $definition ) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			$this->matchLabel( $labels, $definition );  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		}  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		foreach ( $propertyDefinitions->safeGet( '_EXIF', [] ) as $key => $definition ) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			$this->matchLabel( $labels, $definition );  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		}  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		if ( $labels !== [] ) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			$this->cache->save( $hash, $labels, 3600 * 24 );  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		}  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		return $labels;  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                	}  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	private function matchLabel( &$labels, $definition ) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		if ( !isset( $definition['id'] ) ) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			return;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		}  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		$alias = 'sesp-property-unknown-label';  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		if ( isset( $definition['alias'] ) ) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			$alias = $definition['alias'];  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		}  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		$labels[$definition['id']] = Message::get( $alias, null, $this->languageCode );  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                	}  | 
            
            
                                                        
            
                                    
            
            
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                }  | 
            
            
                                                        
            
                                    
            
            
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Our type inference engine has found a suspicous assignment of a value to a property. This check raises an issue when a value that can be of a mixed type is assigned to a property that is type hinted more strictly.
For example, imagine you have a variable
$accountIdthat can either hold an Id object or false (if there is no account id yet). Your code now assigns that value to theidproperty of an instance of theAccountclass. This class holds a proper account, so the id value must no longer be false.Either this assignment is in error or a type check should be added for that assignment.