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https://github.com/moodle/moodle.git
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5ec86bf501
The group concatenation types now consistently sort the returned values and support aggregating columns containing multiple fields and those with defined callbacks.
68 lines
1.9 KiB
PHP
68 lines
1.9 KiB
PHP
<?php
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// This file is part of Moodle - http://moodle.org/
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//
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// Moodle is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// Moodle is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
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declare(strict_types=1);
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namespace core_reportbuilder\local\aggregation;
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use lang_string;
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use core_reportbuilder\local\report\column;
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/**
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* Column min aggregation type
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*
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* @package core_reportbuilder
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* @copyright 2021 Paul Holden <paulh@moodle.com>
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* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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*/
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class min extends base {
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/**
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* Return aggregation name
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*
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* @return lang_string
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*/
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public static function get_name(): lang_string {
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return new lang_string('aggregationmin', 'core_reportbuilder');
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}
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/**
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* This aggregation can be performed on all numeric/date/boolean types
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*
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* @param int $columntype
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* @return bool
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*/
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public static function compatible(int $columntype): bool {
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return in_array($columntype, [
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column::TYPE_INTEGER,
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column::TYPE_FLOAT,
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column::TYPE_TIMESTAMP,
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column::TYPE_BOOLEAN,
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]);
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}
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/**
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* Return the aggregated field SQL
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*
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* @param string $field
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* @param int $columntype
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* @return string
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*/
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public static function get_field_sql(string $field, int $columntype): string {
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return "MIN({$field})";
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}
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}
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