| 1 |  |  | <?php | 
            
                                                                                                            
                            
            
                                    
            
            
                | 2 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 3 |  |  | /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 4 |  |  |  * @copyright Copyright (C) eZ Systems AS. All rights reserved. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 5 |  |  |  * @license For full copyright and license information view LICENSE file distributed with this source code. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 6 |  |  |  */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 7 |  |  | declare(strict_types=1); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 8 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 9 |  |  | namespace eZ\Publish\Core\MVC\Symfony\SiteAccess; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 10 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 11 |  |  | use eZ\Publish\Core\Base\Exceptions\NotFoundException; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 12 |  |  | use eZ\Publish\Core\MVC\ConfigResolverInterface; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 13 |  |  | use eZ\Publish\Core\MVC\Symfony\SiteAccess; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 14 |  |  | use function iterator_to_array; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 15 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 16 |  |  | class SiteAccessService implements SiteAccessServiceInterface, SiteAccessAware | 
            
                                                                                                            
                            
            
                                    
            
            
                | 17 |  |  | { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 18 |  |  |     /** @var \eZ\Publish\Core\MVC\Symfony\SiteAccess\SiteAccessProviderInterface */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 19 |  |  |     private $provider; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 20 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 21 |  |  |     /** @var \eZ\Publish\Core\MVC\Symfony\SiteAccess */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 22 |  |  |     private $siteAccess; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 23 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 24 |  |  |     /** @var \eZ\Publish\Core\MVC\ConfigResolverInterface */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 25 |  |  |     private $configResolver; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 26 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 27 |  |  |     public function __construct( | 
            
                                                                                                            
                            
            
                                    
            
            
                | 28 |  |  |         SiteAccessProviderInterface $provider, | 
            
                                                                                                            
                            
            
                                    
            
            
                | 29 |  |  |         ConfigResolverInterface $configResolver | 
            
                                                                                                            
                            
            
                                    
            
            
                | 30 |  |  |     ) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 31 |  |  |         $this->provider = $provider; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 32 |  |  |         $this->configResolver = $configResolver; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 33 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 34 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 35 |  |  |     public function setSiteAccess(SiteAccess $siteAccess = null): void | 
            
                                                                                                            
                            
            
                                    
            
            
                | 36 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 37 |  |  |         $this->siteAccess = $siteAccess; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 38 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 39 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 40 |  |  |     public function exists(string $name): bool | 
            
                                                                                                            
                            
            
                                    
            
            
                | 41 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 42 |  |  |         return $this->provider->isDefined($name); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 43 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 44 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 45 |  |  |     public function get(string $name): SiteAccess | 
            
                                                                                                            
                            
            
                                    
            
            
                | 46 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 47 |  |  |         if ($this->provider->isDefined($name)) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 48 |  |  |             return $this->provider->getSiteAccess($name); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 49 |  |  |         } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 50 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 51 |  |  |         throw new NotFoundException('SiteAccess', $name); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 52 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 53 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 54 |  |  |     public function getAll(): iterable | 
            
                                                                                                            
                            
            
                                    
            
            
                | 55 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 56 |  |  |         return $this->provider->getSiteAccesses(); | 
                            
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                | 57 |  |  |     } | 
            
                                                                                                            
                                                                
            
                                    
            
            
                | 58 |  |  |  | 
            
                                                                        
                            
            
                                    
            
            
                | 59 |  |  |     public function getCurrent(): ?SiteAccess | 
            
                                                                        
                            
            
                                    
            
            
                | 60 |  |  |     { | 
            
                                                                        
                            
            
                                    
            
            
                | 61 |  |  |         if ($this->siteAccess === null){ | 
            
                                                                        
                            
            
                                    
            
            
                | 62 |  |  |             return null; | 
            
                                                                        
                            
            
                                    
            
            
                | 63 |  |  |         } | 
            
                                                                        
                            
            
                                    
            
            
                | 64 |  |  |  | 
            
                                                                        
                            
            
                                    
            
            
                | 65 |  |  |         return $this->get($this->siteAccess->name); | 
            
                                                                        
                            
            
                                    
            
            
                | 66 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 67 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 68 |  |  |     public function getSiteAccessesRelation(?SiteAccess $siteAccess = null): array | 
            
                                                                                                            
                            
            
                                    
            
            
                | 69 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 70 |  |  |         $siteAccess = $siteAccess ?? $this->siteAccess; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 71 |  |  |         $saRelationMap = []; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 72 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 73 |  |  |         /** @var \eZ\Publish\Core\MVC\Symfony\SiteAccess[] $saList */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 74 |  |  |         $saList = iterator_to_array($this->provider->getSiteAccesses()); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 75 |  |  |         // First build the SiteAccess relation map, indexed by repository and rootLocationId. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 76 |  |  |         foreach ($saList as $sa) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 77 |  |  |             $siteAccessName = $sa->name; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 78 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 79 |  |  |             $repository = $this->configResolver->getParameter('repository', 'ezsettings', $siteAccessName); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 80 |  |  |             if (!isset($saRelationMap[$repository])) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 81 |  |  |                 $saRelationMap[$repository] = []; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 82 |  |  |             } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 83 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 84 |  |  |             $rootLocationId = $this->configResolver->getParameter('content.tree_root.location_id', 'ezsettings', $siteAccessName); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 85 |  |  |             if (!isset($saRelationMap[$repository][$rootLocationId])) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 86 |  |  |                 $saRelationMap[$repository][$rootLocationId] = []; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 87 |  |  |             } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 88 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 89 |  |  |             $saRelationMap[$repository][$rootLocationId][] = $siteAccessName; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 90 |  |  |         } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 91 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 92 |  |  |         $siteAccessName = $siteAccess->name; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 93 |  |  |         $repository = $this->configResolver->getParameter('repository', 'ezsettings', $siteAccessName); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 94 |  |  |         $rootLocationId = $this->configResolver->getParameter('content.tree_root.location_id', 'ezsettings', $siteAccessName); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 95 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 96 |  |  |         return $saRelationMap[$repository][$rootLocationId]; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 97 |  |  |     } | 
            
                                                                                                            
                                                                
            
                                    
            
            
                | 98 |  |  | } | 
            
                                                        
            
                                    
            
            
                | 99 |  |  |  | 
            
                        
If you return a value from a function or method, it should be a sub-type of the type that is given by the parent type f.e. an interface, or abstract method. This is more formally defined by the Lizkov substitution principle, and guarantees that classes that depend on the parent type can use any instance of a child type interchangably. This principle also belongs to the SOLID principles for object oriented design.
Let’s take a look at an example:
Our function
my_functionexpects aPostobject, and outputs the author of the post. The base classPostreturns a simple string and outputting a simple string will work just fine. However, the child classBlogPostwhich is a sub-type ofPostinstead decided to return anobject, and is therefore violating the SOLID principles. If aBlogPostwere passed tomy_function, PHP would not complain, but ultimately fail when executing thestrtouppercall in its body.