See Release Notes
Long Term Support Release
Differences Between: [Versions 400 and 401]
1 <?php 2 // This file is part of Moodle - http://moodle.org/ 3 // 4 // Moodle is free software: you can redistribute it and/or modify 5 // it under the terms of the GNU General Public License as published by 6 // the Free Software Foundation, either version 3 of the License, or 7 // (at your option) any later version. 8 // 9 // Moodle is distributed in the hope that it will be useful, 10 // but WITHOUT ANY WARRANTY; without even the implied warranty of 11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12 // GNU General Public License for more details. 13 // 14 // You should have received a copy of the GNU General Public License 15 // along with Moodle. If not, see <http://www.gnu.org/licenses/>. 16 17 declare(strict_types=1); 18 19 namespace core_reportbuilder\local\aggregation; 20 21 use lang_string; 22 use core_reportbuilder\local\report\column; 23 24 /** 25 * Column average aggregation type 26 * 27 * @package core_reportbuilder 28 * @copyright 2021 Paul Holden <paulh@moodle.com> 29 * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later 30 */ 31 class avg extends base { 32 33 /** 34 * Return aggregation name 35 * 36 * @return lang_string 37 */ 38 public static function get_name(): lang_string { 39 return new lang_string('aggregationavg', 'core_reportbuilder'); 40 } 41 42 /** 43 * This aggregation can be performed on all numeric columns 44 * 45 * @param int $columntype 46 * @return bool 47 */ 48 public static function compatible(int $columntype): bool { 49 return in_array($columntype, [ 50 column::TYPE_INTEGER, 51 column::TYPE_FLOAT, 52 column::TYPE_BOOLEAN, 53 ]); 54 } 55 56 /** 57 * Return the aggregated field SQL 58 * 59 * @param string $field 60 * @param int $columntype 61 * @return string 62 */ 63 public static function get_field_sql(string $field, int $columntype): string { 64 return "AVG(1.0 * {$field})"; 65 } 66 67 /** 68 * Return formatted value for column when applying aggregation 69 * 70 * For boolean columns we return the average of the values (0..1), numeric columns execute original callbacks if present 71 * 72 * @param mixed $value 73 * @param array $values 74 * @param array $callbacks 75 * @param int $columntype 76 * @return mixed 77 */ 78 public static function format_value($value, array $values, array $callbacks, int $columntype) { 79 if (reset($values) === null) { 80 return null; 81 } 82 if ($columntype === column::TYPE_BOOLEAN || empty($callbacks)) { 83 return format_float((float) reset($values), 1); 84 } 85 86 return parent::format_value($value, $values, $callbacks, $columntype); 87 } 88 }
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