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<?php |
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namespace ApacheSolrForTypo3\Solr\Domain\Search\ResultSet\Facets\OptionBased; |
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/* |
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* This file is part of the TYPO3 CMS project. |
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* |
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* It is free software; you can redistribute it and/or modify it under |
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* the terms of the GNU General Public License, either version 2 |
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* of the License, or any later version. |
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* |
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* For the full copyright and license information, please read the |
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* LICENSE.txt file that was distributed with this source code. |
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* |
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* The TYPO3 project - inspiring people to share! |
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*/ |
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use ApacheSolrForTypo3\Solr\Domain\Search\ResultSet\Facets\AbstractFacetItemCollection; |
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use ApacheSolrForTypo3\Solr\Domain\Search\ResultSet\Facets\OptionBased\Options\Option; |
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/** |
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* Collection for facet options. |
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* |
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* @author Frans Saris <[email protected]> |
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* @author Timo Hund <[email protected]> |
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* @package ApacheSolrForTypo3\Solr\Domain\Search\ResultSet\Facets\OptionsFacet |
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*/ |
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class OptionCollection extends AbstractFacetItemCollection |
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{ |
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/** |
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* Returns an array of prefixes from the option labels. |
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* |
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* Red, Blue, Green => r, g, b |
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* |
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* Can be used in combination with getByPrefix() to group facet options by prefix (e.g. alphabetical). |
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* |
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* @param int $length |
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* @return array |
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*/ |
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public function getLowercaseLabelPrefixes($length = 1) |
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{ |
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$prefixes = $this->getLabelPrefixes($length); |
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return array_map('strtolower', $prefixes); |
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} |
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/** |
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* @param string $filteredPrefix |
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* @return AbstractFacetItemCollection |
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*/ |
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public function getByLowercaseLabelPrefix($filteredPrefix) |
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{ |
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return $this->getFilteredCopy(function(Option $option) use ($filteredPrefix) |
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{ |
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$filteredPrefixLength = strlen($filteredPrefix); |
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$currentPrefix = substr(strtolower($option->getLabel()),0, $filteredPrefixLength); |
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return $currentPrefix === $filteredPrefix; |
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}); |
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} |
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/** |
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* @param int $length |
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* @return array |
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*/ |
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protected function getLabelPrefixes($length = 1) : array |
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{ |
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$prefixes = []; |
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foreach ($this->data as $option) { |
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/** @var $option Option */ |
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$prefix = substr($option->getLabel(), 0, $length); |
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$prefixes[$prefix] = $prefix; |
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} |
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return array_values($prefixes); |
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} |
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} |
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dkd-kaehm /
ext-solr
