Complex classes like ResultList often do a lot of different things. To break such a class down, we need to identify a cohesive component within that class. A common approach to find such a component is to look for fields/methods that share the same prefixes, or suffixes. You can also have a look at the cohesion graph to spot any un-connected, or weakly-connected components.
Once you have determined the fields that belong together, you can apply the Extract Class refactoring. If the component makes sense as a sub-class, Extract Subclass is also a candidate, and is often faster.
While breaking up the class, it is a good idea to analyze how other classes use ResultList, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
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| 13 | class ResultList extends \ViewableData implements \SS_Limitable, \SS_List { |
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| 14 | |||
| 15 | /** |
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| 16 | * @var \Elastica\Index |
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| 17 | */ |
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| 18 | private $service; |
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| 19 | |||
| 20 | /** |
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| 21 | * @var \Elastica\Query |
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| 22 | */ |
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| 23 | private $query; |
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| 24 | |||
| 25 | /** |
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| 26 | * List of types to search for, default (blank) returns all |
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| 27 | * @var string |
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| 28 | */ |
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| 29 | |||
| 30 | private $types = ''; |
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| 31 | |||
| 32 | /** |
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| 33 | * Filters, i.e. selected aggregations, to apply to the search |
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| 34 | */ |
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| 35 | private $filters = array(); |
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| 36 | |||
| 37 | /** |
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| 38 | * An array list of aggregations from this search |
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| 39 | * @var ArrayList |
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| 40 | */ |
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| 41 | private $aggregations; |
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| 42 | |||
| 43 | |||
| 44 | /** |
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| 45 | * Create a search and then optionally tweak it. Actual search is only performed against |
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| 46 | * Elasticsearch when the getResults() method is called. |
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| 47 | * |
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| 48 | * @param ElasticaService $service object used to communicate with Elasticsearch |
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| 49 | * @param Query $query Elastica query object, created via QueryGenerator |
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| 50 | * @param string $queryText the text from the query |
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| 51 | * @param array $filters Selected filters, used for aggregation purposes only |
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| 52 | * (i.e. query already filtered prior to this) |
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| 53 | */ |
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| 54 | 1 | public function __construct(ElasticaService $service, Query $query, $queryText, $filters = array()) { |
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| 60 | |||
| 61 | public function __clone() { |
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| 64 | |||
| 65 | /** |
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| 66 | * @return \Elastica\Index |
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| 67 | */ |
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| 68 | public function getService() { |
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| 71 | |||
| 72 | /** |
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| 73 | * Set a new list of types (SilverStripe classes) to search for |
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| 74 | * @param string $newTypes comma separated list of types to search for |
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| 75 | */ |
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| 76 | public function setTypes($newTypes) { |
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| 77 | $this->types = $newTypes; |
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| 78 | } |
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| 79 | |||
| 80 | |||
| 81 | /** |
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| 82 | * @return \Elastica\Query |
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| 83 | */ |
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| 84 | public function getQuery() { |
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| 85 | return $this->query; |
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| 86 | } |
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| 87 | |||
| 88 | |||
| 89 | /** |
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| 90 | * Get the aggregation results for this query. Should only be called |
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| 91 | * after $this->getResults() has been executed. |
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| 92 | * Note this will be an empty array list if there is no aggregation |
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| 93 | * |
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| 94 | * @return ArrayList ArrayList of the aggregated results for this query |
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| 95 | */ |
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| 96 | 1 | public function getAggregations() { |
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| 99 | |||
| 100 | /** |
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| 101 | * @return array |
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| 102 | */ |
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| 103 | 1 | public function getResults() { |
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| 104 | 1 | if(!isset($this->_cachedResults)) { |
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| 105 | 1 | $ers = $this->service->search($this->query, $this->types); |
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| 106 | |||
| 107 | 1 | if(isset($ers->MoreLikeThisTerms)) { |
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| 108 | 1 | $this->MoreLikeThisTerms = $ers->MoreLikeThisTerms; |
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| 109 | 1 | } |
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| 110 | |||
| 111 | 1 | if(isset($ers->getSuggests()['query-phrase-suggestions'])) { |
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| 112 | $suggest = $ers->getSuggests()['query-phrase-suggestions']; |
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| 113 | $suggestedPhraseAndHL = ElasticaUtil::getPhraseSuggestion($suggest); |
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| 114 | if($suggestedPhraseAndHL) { |
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| 115 | $this->SuggestedQuery = $suggestedPhraseAndHL['suggestedQuery']; |
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| 116 | $this->SuggestedQueryHighlighted = $suggestedPhraseAndHL['suggestedQueryHighlighted']; |
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| 117 | } |
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| 118 | } |
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| 119 | |||
| 120 | 1 | $this->TotalItems = $ers->getTotalHits(); |
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| 121 | 1 | $this->TotalTime = $ers->getTotalTime(); |
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| 122 | 1 | $this->_cachedResults = $ers->getResults(); |
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| 123 | // make the aggregations available to the templating, title casing |
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| 124 | // to be consistent with normal templating conventions |
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| 125 | 1 | $aggs = $ers->getAggregations(); |
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| 126 | |||
| 127 | // array of index field name to human readable title |
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| 128 | 1 | $indexedFieldTitleMapping = array(); |
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| 129 | |||
| 130 | // optionally remap keys and store chosen aggregations from get params |
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| 131 | 1 | if(isset($this->SearchHelper)) { |
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| 132 | $manipulator = \Injector::inst()->create($this->SearchHelper); |
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| 133 | $manipulator->query = $this->query; |
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| 134 | $manipulator->updateAggregation($aggs); |
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| 135 | |||
| 136 | $indexedFieldTitleMapping = $manipulator->getIndexFieldTitleMapping(); |
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| 137 | } |
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| 138 | 1 | $aggsTemplate = new \ArrayList(); |
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| 139 | |||
| 140 | // Convert the buckets into a form suitable for SilverStripe templates |
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| 141 | 1 | $queryText = $this->originalQueryText; |
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| 142 | |||
| 143 | // if not search term remove it and aggregate with a blank query |
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| 144 | 1 | if($queryText == '' && sizeof($aggs) > 0) { |
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| 145 | $params = $this->query->getParams(); |
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| 146 | unset($params['query']); |
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| 147 | $this->query->setParams($params); |
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| 148 | $queryText = ''; |
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| 149 | } |
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| 150 | |||
| 151 | // get the base URL for the current facets selected |
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| 152 | 1 | $baseURL = \Controller::curr()->Link() . '?'; |
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| 153 | 1 | $prefixAmp = false; |
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| 154 | 1 | if($queryText !== '') { |
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| 155 | 1 | $baseURL .= 'q=' . urlencode($queryText); |
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| 156 | 1 | $prefixAmp = true; |
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| 157 | 1 | } |
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| 158 | |||
| 159 | // now add the selected facets |
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| 160 | 1 | foreach($this->filters as $key => $value) { |
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| 161 | if($prefixAmp) { |
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| 162 | $baseURL .= '&'; |
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| 163 | } else { |
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| 164 | $prefixAmp = true; |
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| 165 | } |
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| 166 | $baseURL .= $key . '=' . urlencode($value); |
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| 167 | 1 | } |
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| 168 | |||
| 169 | 1 | foreach(array_keys($aggs) as $key) { |
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| 170 | $aggDO = new \DataObject(); |
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| 171 | //FIXME - Camel case separate here |
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| 172 | if(isset($indexedFieldTitleMapping[$key])) { |
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| 173 | $aggDO->Name = $indexedFieldTitleMapping[$key]; |
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| 174 | } else { |
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| 175 | $aggDO->Name = $key; |
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| 176 | } |
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| 177 | |||
| 178 | // now the buckets |
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| 179 | if(isset($aggs[$key]['buckets'])) { |
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| 180 | $bucketsAL = new \ArrayList(); |
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| 181 | foreach($aggs[$key]['buckets'] as $value) { |
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| 182 | $ct = new \DataObject(); |
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| 183 | $ct->Key = $value['key']; |
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| 184 | $ct->DocumentCount = $value['doc_count']; |
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| 185 | $query[$key] = $value; |
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| 186 | if($prefixAmp) { |
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| 187 | $url = $baseURL . '&'; |
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| 188 | } else { |
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| 189 | $url = $baseURL; |
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| 190 | $prefixAmp = true; |
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| 191 | } |
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| 192 | |||
| 193 | // check if currently selected |
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| 194 | if(isset($this->filters[$key])) { |
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| 195 | |||
| 196 | if($this->filters[$key] === (string)$value['key']) { |
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| 197 | $ct->IsSelected = true; |
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| 198 | // mark this facet as having been selected, so optional toggling |
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| 199 | // of the display of the facet can be done via the template. |
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| 200 | $aggDO->IsSelected = true; |
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| 201 | |||
| 202 | $urlParam = $key . '=' . urlencode($this->filters[$key]); |
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| 203 | |||
| 204 | // possible ampersand combos to remove |
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| 205 | $v2 = '&' . $urlParam; |
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| 206 | $v3 = $urlParam . '&'; |
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| 207 | $url = str_replace($v2, '', $url); |
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| 208 | $url = str_replace($v3, '', $url); |
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| 209 | $url = str_replace($urlParam, '', $url); |
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| 210 | $ct->URL = $url; |
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| 211 | } |
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| 212 | } else { |
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| 213 | $url .= $key . '=' . urlencode($value['key']); |
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| 214 | $prefixAmp = true; |
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| 215 | } |
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| 216 | |||
| 217 | $url = rtrim($url, '&'); |
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| 218 | |||
| 219 | $ct->URL = $url; |
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| 220 | $bucketsAL->push($ct); |
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| 221 | } |
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| 222 | |||
| 223 | // in the case of range queries we wish to remove the non selected ones |
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| 224 | if($aggDO->IsSelected) { |
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| 225 | $newList = new \ArrayList(); |
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| 226 | foreach($bucketsAL->getIterator() as $bucket) { |
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| 227 | if($bucket->IsSelected) { |
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| 228 | $newList->push($bucket); |
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| 229 | break; |
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| 230 | } |
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| 231 | } |
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| 232 | |||
| 233 | $bucketsAL = $newList; |
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| 234 | } |
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| 235 | $aggDO->Buckets = $bucketsAL; |
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| 236 | |||
| 237 | |||
| 238 | } |
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| 239 | $aggsTemplate->push($aggDO); |
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| 240 | 1 | } |
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| 241 | 1 | $this->aggregations = $aggsTemplate; |
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| 242 | 1 | } |
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| 243 | 1 | return $this->_cachedResults; |
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| 244 | } |
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| 245 | |||
| 246 | |||
| 247 | 1 | public function getTotalItems() { |
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| 251 | |||
| 252 | |||
| 253 | public function getTotalTime() { |
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| 256 | |||
| 257 | public function getIterator() { |
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| 260 | |||
| 261 | public function limit($limit, $offset = 0) { |
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| 269 | |||
| 270 | /** |
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| 271 | * Converts results of type {@link \Elastica\Result} |
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| 272 | * into their respective {@link DataObject} counterparts. |
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| 273 | * |
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| 274 | * @return array DataObject[] |
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| 275 | */ |
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| 276 | 1 | public function toArray() { |
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| 277 | 1 | $result = array(); |
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| 278 | |||
| 279 | /** @var $found \Elastica\Result[] */ |
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| 280 | 1 | $found = $this->getResults(); |
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| 281 | 1 | $needed = array(); |
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| 282 | 1 | $retrieved = array(); |
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| 283 | |||
| 284 | 1 | foreach($found as $item) { |
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| 285 | 1 | $type = $item->getType(); |
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| 286 | |||
| 287 | 1 | if(!array_key_exists($type, $needed)) { |
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| 288 | 1 | $needed[$type] = array($item->getId()); |
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| 289 | 1 | $retrieved[$type] = array(); |
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| 290 | 1 | } else { |
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| 291 | 1 | $needed[$type][] = $item->getId(); |
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| 292 | } |
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| 293 | 1 | } |
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| 294 | |||
| 295 | 1 | foreach($needed as $class => $ids) { |
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| 296 | 1 | foreach($class::get()->byIDs($ids) as $record) { |
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| 297 | 1 | $retrieved[$class][$record->ID] = $record; |
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| 298 | 1 | } |
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| 299 | 1 | } |
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| 300 | |||
| 301 | // Title and Link are special cases |
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| 302 | 1 | $ignore = array('Title', 'Link', 'Title.standard', 'Link.standard'); |
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| 303 | |||
| 304 | 1 | foreach($found as $item) { |
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| 305 | // Safeguards against indexed items which might no longer be in the DB |
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| 306 | 1 | if(array_key_exists($item->getId(), $retrieved[$item->getType()])) { |
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| 307 | |||
| 308 | 1 | $data_object = $retrieved[$item->getType()][$item->getId()]; |
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| 309 | 1 | $data_object->setElasticaResult($item); |
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| 310 | 1 | $highlights = $item->getHighlights(); |
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| 311 | |||
| 312 | //$snippets will contain the highlights shown in the body of the search result |
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| 313 | //$namedSnippets will be used to add highlights to the Link and Title |
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| 314 | 1 | $snippets = new \ArrayList(); |
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| 315 | 1 | $namedSnippets = new \ArrayList(); |
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| 316 | |||
| 317 | 1 | foreach(array_keys($highlights) as $fieldName) { |
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| 318 | 1 | $fieldSnippets = new \ArrayList(); |
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| 319 | |||
| 320 | 1 | foreach($highlights[$fieldName] as $snippet) { |
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| 321 | 1 | $do = new \DataObject(); |
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| 322 | 1 | $do->Snippet = $snippet; |
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| 323 | |||
| 324 | // skip title and link in the summary of highlights |
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| 325 | 1 | if(!in_array($fieldName, $ignore)) { |
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| 326 | 1 | $snippets->push($do); |
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| 327 | 1 | } |
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| 328 | |||
| 329 | 1 | $fieldSnippets->push($do); |
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| 330 | 1 | } |
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| 331 | |||
| 332 | 1 | if($fieldSnippets->count() > 0) { |
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| 333 | //Fields may have a dot in their name, e.g. Title.standard - take this into account |
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| 334 | //As dots are an issue with template syntax, store as Title_standard |
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| 335 | 1 | $splits = explode('.', $fieldName); |
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| 336 | 1 | if(sizeof($splits) == 1) { |
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| 337 | $namedSnippets->$fieldName = $fieldSnippets; |
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| 338 | } else { |
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| 339 | // The Title.standard case, for example |
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| 340 | 1 | $splits = explode('.', $fieldName); |
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| 341 | 1 | $compositeFielddName = $splits[0] . '_' . $splits[1]; |
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| 342 | 1 | $namedSnippets->$compositeFielddName = $fieldSnippets; |
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| 343 | } |
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| 344 | |||
| 345 | 1 | } |
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| 346 | |||
| 347 | |||
| 348 | 1 | } |
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| 349 | |||
| 350 | |||
| 351 | 1 | $data_object->SearchHighlights = $snippets; |
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| 352 | 1 | $data_object->SearchHighlightsByField = $namedSnippets; |
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| 353 | |||
| 354 | 1 | $result[] = $data_object; |
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| 355 | |||
| 356 | 1 | } |
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| 357 | 1 | } |
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| 358 | |||
| 359 | |||
| 360 | 1 | return $result; |
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| 361 | } |
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| 362 | |||
| 363 | public function toArrayList() { |
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| 366 | |||
| 367 | public function toNestedArray() { |
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| 376 | |||
| 377 | public function first() { |
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| 381 | |||
| 382 | public function last() { |
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| 386 | |||
| 387 | public function map($key = 'ID', $title = 'Title') { |
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| 390 | |||
| 391 | public function column($col = 'ID') { |
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| 404 | |||
| 405 | public function each($callback) { |
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| 408 | |||
| 409 | public function count() { |
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| 410 | return count($this->toArray()); |
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| 411 | } |
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| 412 | |||
| 413 | /** |
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| 414 | * @ignore |
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| 415 | */ |
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| 416 | public function offsetExists($offset) { |
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| 419 | |||
| 420 | /** |
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| 421 | * @ignore |
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| 422 | */ |
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| 423 | public function offsetGet($offset) { |
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| 426 | |||
| 427 | /** |
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| 428 | * @ignore |
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| 429 | */ |
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| 430 | public function offsetSet($offset, $value) { |
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| 433 | |||
| 434 | /** |
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| 435 | * @ignore |
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| 436 | */ |
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| 437 | public function offsetUnset($offset) { |
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| 440 | |||
| 441 | /** |
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| 442 | * @ignore |
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| 443 | */ |
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| 444 | public function add($item) { |
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| 447 | |||
| 448 | /** |
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| 449 | * @ignore |
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| 450 | */ |
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| 451 | public function remove($item) { |
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| 454 | |||
| 455 | /** |
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| 456 | * @ignore |
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| 457 | */ |
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| 458 | public function find($key, $value) { |
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| 461 | |||
| 462 | } |
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| 463 |
Our type inference engine has found an assignment to a property that is incompatible with the declared type of that property.
Either this assignment is in error or the assigned type should be added to the documentation/type hint for that property..