101 lines
2.8 KiB
PHP
101 lines
2.8 KiB
PHP
<?php
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/**
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* @copyright Copyright (C) 2010-2022, the Friendica project
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*
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* @license GNU AGPL version 3 or any later version
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as
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* published by the Free Software Foundation, either version 3 of the
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* License, or (at your option) any later version.
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*
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* This program 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 Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*
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*/
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namespace Friendica\Database;
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use Friendica\DI;
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use Friendica\Util\Writer\ViewDefinitionSqlWriter;
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class View
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{
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/**
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* Creates a view
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*
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* @param bool $verbose Whether to show SQL statements
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* @param bool $action Whether to execute SQL statements
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* @return void
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*/
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public static function create(bool $verbose, bool $action)
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{
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// Delete previously used views that aren't used anymore
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foreach (['post-view', 'post-thread-view'] as $view) {
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if (self::isView($view)) {
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$sql = sprintf("DROP VIEW IF EXISTS `%s`", DBA::escape($view));
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if (!empty($sql) && $verbose) {
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echo $sql . ";\n";
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}
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if (!empty($sql) && $action) {
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DBA::e($sql);
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}
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}
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}
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// just for Create purpose, reload the view definition with addons to explicit get the whole definition
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$definition = DI::viewDefinition()->load(true)->getAll();
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foreach ($definition as $name => $structure) {
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if (self::isView($name)) {
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DBA::e(sprintf("DROP VIEW IF EXISTS `%s`", DBA::escape($name)));
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} elseif (self::isTable($name)) {
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DBA::e(sprintf("DROP TABLE IF EXISTS `%s`", DBA::escape($name)));
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}
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DBA::e(ViewDefinitionSqlWriter::createView($name, $structure));
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}
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}
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/**
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* Check if the given table/view is a view
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*
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* @param string $view
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* @return boolean "true" if it's a view
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*/
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private static function isView(string $view): bool
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{
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$status = DBA::selectFirst('INFORMATION_SCHEMA.TABLES', ['TABLE_TYPE'],
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['TABLE_SCHEMA' => DBA::databaseName(), 'TABLE_NAME' => $view]);
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if (empty($status['TABLE_TYPE'])) {
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return false;
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}
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return $status['TABLE_TYPE'] == 'VIEW';
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}
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/**
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* Check if the given table/view is a table
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*
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* @param string $table
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* @return boolean "true" if it's a table
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*/
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private static function isTable(string $table): bool
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{
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$status = DBA::selectFirst('INFORMATION_SCHEMA.TABLES', ['TABLE_TYPE'],
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['TABLE_SCHEMA' => DBA::databaseName(), 'TABLE_NAME' => $table]);
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if (empty($status['TABLE_TYPE'])) {
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return false;
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}
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return $status['TABLE_TYPE'] == 'BASE TABLE';
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}
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}
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