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1 | <?php |
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2 | |||
3 | namespace Elastica\Aggregation; |
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4 | |||
5 | use Elastica\Exception\InvalidException; |
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6 | use Elastica\Query\AbstractQuery; |
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7 | |||
8 | /** |
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9 | * Class Filter. |
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10 | * |
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11 | * @see https://www.elastic.co/guide/en/elasticsearch/reference/current/search-aggregations-bucket-filter-aggregation.html |
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12 | */ |
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13 | class Filter extends AbstractAggregation |
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14 | { |
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15 | /** |
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16 | * @param string $name |
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17 | * @param AbstractQuery $filter |
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18 | */ |
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19 | public function __construct($name, AbstractQuery $filter = null) |
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20 | { |
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21 | parent::__construct($name); |
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22 | |||
23 | if (null !== $filter) { |
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24 | $this->setFilter($filter); |
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25 | } |
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26 | } |
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27 | |||
28 | /** |
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29 | * Set the filter for this aggregation. |
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30 | * |
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31 | * @param AbstractQuery $filter |
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32 | * |
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33 | * @return $this |
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34 | */ |
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35 | public function setFilter(AbstractQuery $filter) |
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36 | { |
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37 | return $this->setParam('filter', $filter); |
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38 | } |
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39 | |||
40 | /** |
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41 | * @throws \Elastica\Exception\InvalidException If filter is not set |
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42 | * |
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43 | * @return array |
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44 | */ |
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45 | public function toArray() |
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46 | { |
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47 | if (!$this->hasParam('filter')) { |
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48 | throw new InvalidException('Filter is required'); |
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49 | } |
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50 | |||
51 | $array = [ |
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52 | 'filter' => $this->getParam('filter')->toArray(), |
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53 | ]; |
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54 | |||
55 | if ($this->_aggs) { |
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56 | $array['aggs'] = $this->_convertArrayable($this->_aggs); |
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57 | } |
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58 | |||
59 | return $array; |
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60 | } |
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61 | } |
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62 |
This check marks implicit conversions of arrays to boolean values in a comparison. While in PHP an empty array is considered to be equal (but not identical) to false, this is not always apparent.
Consider making the comparison explicit by using
empty(..)
or! empty(...)
instead.