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                <?php  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * File containing the SubtreeIn criterion visitor class.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @copyright Copyright (C) eZ Systems AS. All rights reserved.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @license For full copyright and license information view LICENSE file distributed with this source code.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @version //autogentag//  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                namespace eZ\Publish\Core\Search\Elasticsearch\Content\CriterionVisitor;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use eZ\Publish\Core\Search\Elasticsearch\Content\CriterionVisitorDispatcher as Dispatcher;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use eZ\Publish\Core\Search\Elasticsearch\Content\CriterionVisitor;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use eZ\Publish\API\Repository\Values\Content\Query\Criterion;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use eZ\Publish\API\Repository\Values\Content\Query\Criterion\Operator;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * Visits the Subtree criterion.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                class SubtreeIn extends CriterionVisitor  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * Check if visitor is applicable to current criterion.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param \eZ\Publish\API\Repository\Values\Content\Query\Criterion $criterion  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @return bool  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                     */  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    public function canVisit(Criterion $criterion)  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        return  | 
            
            
                                                                        
                            
            
                                    
            
            
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                            $criterion instanceof Criterion\Subtree &&  | 
            
            
                                                                        
                            
            
                                    
            
            
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                            (  | 
            
            
                                                                        
                            
            
                                    
            
            
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                                ($criterion->operator ?: Operator::IN) === Operator::IN ||  | 
            
            
                                                                        
                            
            
                                    
            
            
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                                $criterion->operator === Operator::EQ  | 
            
            
                                                                        
                            
            
                                    
            
            
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                            );  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * Returns nested condition common for filter and query contexts.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param \eZ\Publish\API\Repository\Values\Content\Query\Criterion $criterion  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @return array  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                                                    
                                                                                                        
            
            
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                View Code Duplication | 
                    protected function getCondition(Criterion $criterion)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $filters = array();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        foreach ($criterion->value as $value) { | 
            
                            
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                            $filters[] = array(  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                'prefix' => array(  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                    'locations_doc.path_string_id' => $value,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                ),  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            );  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return $filters;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * Map field value to a proper Elasticsearch filter representation.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param \eZ\Publish\API\Repository\Values\Content\Query\Criterion $criterion  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param \eZ\Publish\Core\Search\Elasticsearch\Content\CriterionVisitorDispatcher $dispatcher  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param array $languageFilter  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @return mixed  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function visitFilter(Criterion $criterion, Dispatcher $dispatcher, array $languageFilter)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return array(  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            'nested' => array(  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                'path' => 'locations_doc',  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                'filter' => array(  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                    'or' => $this->getCondition($criterion),  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                ),  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            ),  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        );  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * Map field value to a proper Elasticsearch query representation.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param \eZ\Publish\API\Repository\Values\Content\Query\Criterion $criterion  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param \eZ\Publish\Core\Search\Elasticsearch\Content\CriterionVisitorDispatcher $dispatcher  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param array $languageFilter  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @return mixed  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function visitQuery(Criterion $criterion, Dispatcher $dispatcher, array $languageFilter)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return array(  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            'nested' => array(  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                'path' => 'locations_doc',  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                'query' => array(  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                    'bool' => array(  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                        'should' => $this->getCondition($criterion),  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                        'minimum_should_match' => 1,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                    ),  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                ),  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            ),  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        );  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                }  | 
            
            
                                                        
            
                                    
            
            
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There are different options of fixing this problem.
If you want to be on the safe side, you can add an additional type-check:
If you are sure that the expression is traversable, you might want to add a doc comment cast to improve IDE auto-completion and static analysis:
Mark the issue as a false-positive: Just hover the remove button, in the top-right corner of this issue for more options.