1*f2bbffb5SAndreas Gohr<?php 2*f2bbffb5SAndreas Gohr 3*f2bbffb5SAndreas Gohrnamespace dokuwiki\Search\Collection; 4*f2bbffb5SAndreas Gohr 5*f2bbffb5SAndreas Gohr/** 6*f2bbffb5SAndreas Gohr * Abstract collection for frequency-based indexes 7*f2bbffb5SAndreas Gohr * 8*f2bbffb5SAndreas Gohr * In a frequency collection the same token can appear multiple times per entity. The frequency of each 9*f2bbffb5SAndreas Gohr * token per entity is tracked. 10*f2bbffb5SAndreas Gohr * 11*f2bbffb5SAndreas Gohr * @license GPL 2 (http://www.gnu.org/licenses/gpl.html) 12*f2bbffb5SAndreas Gohr * @author Andreas Gohr <andi@splitbrain.org> 13*f2bbffb5SAndreas Gohr * @author Tom N Harris <tnharris@whoopdedo.org> 14*f2bbffb5SAndreas Gohr */ 15*f2bbffb5SAndreas Gohrabstract class FrequencyCollection extends AbstractCollection 16*f2bbffb5SAndreas Gohr{ 17*f2bbffb5SAndreas Gohr /** @inheritdoc */ 18*f2bbffb5SAndreas Gohr protected function countTokens(array $tokens): array 19*f2bbffb5SAndreas Gohr { 20*f2bbffb5SAndreas Gohr return array_count_values($tokens); 21*f2bbffb5SAndreas Gohr } 22*f2bbffb5SAndreas Gohr} 23