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<?php namespace Nord\Lumen\Elasticsearch\Search\Query\Joining;
use Nord\Lumen\Elasticsearch\Search\Query\QueryDSL;
use Nord\Lumen\Elasticsearch\Search\Query\Traits\HasQuery;
use Nord\Lumen\Elasticsearch\Search\Query\Traits\HasScoreMode;
/**
* Performing full SQL-style joins in a distributed system like Elasticsearch is prohibitively expensive.
* Instead, Elasticsearch offers two forms of join which are designed to scale horizontally.
*
* - "nested" query
* Documents may contains fields of type nested. These fields are used to index arrays of objects, where each object can
* be queried (with the nested query) as an independent document.
* - "has_child" and "has_parent" queries
* A parent-child relationship can exist between two document types within a single index. The has_child query returns
* parent documents whose child documents match the specified query, while the has_parent query returns child documents
* whose parent document matches the specified query.
* @see https://www.elastic.co/guide/en/elasticsearch/reference/current/joining-queries.html
*/
abstract class AbstractQuery extends QueryDSL
{
use HasQuery;
use HasScoreMode;
}
digiaonline /
lumen-elasticsearch
