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path: root/vendor/ruflin/elastica/lib/Elastica/Filter/HasChild.php
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<?php
namespace Elastica\Filter;

/**
 * Returns parent documents having child docs matching the query.
 *
 * @author Fabian Vogler <fabian@equivalence.ch>
 *
 * @link http://www.elastic.co/guide/en/elasticsearch/reference/current/query-dsl-has-child-filter.html
 */
class HasChild extends AbstractFilter
{
    /**
     * Construct HasChild filter.
     *
     * @param string|\Elastica\Query|\Elastica\Filter\AbstractFilter $query Query string or a Elastica\Query object or a filter
     * @param string|\Elastica\Type                                  $type  Child document type
     */
    public function __construct($query, $type = null)
    {
        $this->setType($type);
        if ($query instanceof AbstractFilter) {
            $this->setFilter($query);
        } else {
            $this->setQuery($query);
        }
    }

    /**
     * Sets query object.
     *
     * @param string|\Elastica\Query|\Elastica\Query\AbstractQuery $query
     *
     * @return $this
     */
    public function setQuery($query)
    {
        $query = \Elastica\Query::create($query);
        $data = $query->toArray();

        return $this->setParam('query', $data['query']);
    }

    /**
     * Sets the filter object.
     *
     * @param \Elastica\Filter\AbstractFilter $filter
     *
     * @return $this
     */
    public function setFilter($filter)
    {
        return $this->setParam('filter', $filter->toArray());
    }

    /**
     * Set type of the child document.
     *
     * @param string|\Elastica\Type $type Child document type
     *
     * @return $this
     */
    public function setType($type)
    {
        if ($type instanceof \Elastica\Type) {
            $type = $type->getName();
        }

        return $this->setParam('type', (string) $type);
    }

    /**
     * Set minimum number of children are required to match for the parent doc to be considered a match.
     *
     * @param int $count
     *
     * @return $this
     */
    public function setMinimumChildrenCount($count)
    {
        return $this->setParam('min_children', (int) $count);
    }

    /**
     * Set maximum number of children are required to match for the parent doc to be considered a match.
     *
     * @param int $count
     *
     * @return $this
     */
    public function setMaximumChildrenCount($count)
    {
        return $this->setParam('max_children', (int) $count);
    }
}