137 lines
3.4 KiB
PHP
137 lines
3.4 KiB
PHP
<?php
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/**
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* @copyright Copyright (C) 2020, Friendica
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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 Exception;
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use Friendica\Core\Hook;
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use Friendica\DI;
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class View
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{
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/**
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* view definition loaded from static/dbview.config.php
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*
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* @var array
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*/
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private static $definition = [];
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/**
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* Loads the database structure definition from the static/dbview.config.php file.
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* On first pass, defines DB_UPDATE_VERSION constant.
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*
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* @see static/dbview.config.php
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* @param boolean $with_addons_structure Whether to tack on addons additional tables
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* @param string $basePath The base path of this application
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* @return array
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* @throws Exception
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*/
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public static function definition($basePath = '', $with_addons_structure = true)
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{
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if (!self::$definition) {
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if (empty($basePath)) {
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$basePath = DI::app()->getBasePath();
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}
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$filename = $basePath . '/static/dbview.config.php';
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if (!is_readable($filename)) {
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throw new Exception('Missing database view config file static/dbview.config.php');
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}
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$definition = require $filename;
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if (!$definition) {
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throw new Exception('Corrupted database view config file static/dbview.config.php');
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}
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self::$definition = $definition;
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} else {
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$definition = self::$definition;
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}
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if ($with_addons_structure) {
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Hook::callAll('dbview_definition', $definition);
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}
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return $definition;
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}
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public static function create(bool $verbose, bool $action)
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{
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$definition = self::definition();
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foreach ($definition as $name => $structure) {
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self::createview($name, $structure, $verbose, $action);
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}
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}
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public static function printStructure($basePath)
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{
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$database = self::definition($basePath, false);
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foreach ($database AS $name => $structure) {
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echo "--\n";
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echo "-- VIEW $name\n";
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echo "--\n";
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self::createView($name, $structure, true, false);
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echo "\n";
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}
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}
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private static function createview($name, $structure, $verbose, $action)
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{
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$r = true;
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$sql_rows = [];
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foreach ($structure["fields"] AS $fieldname => $origin) {
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if (is_string($origin)) {
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$sql_rows[] = $origin . " AS `" . DBA::escape($fieldname) . "`";
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} elseif (is_array($origin) && (sizeof($origin) == 2)) {
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$sql_rows[] = "`" . DBA::escape($origin[0]) . "`.`" . DBA::escape($origin[1]) . "` AS `" . DBA::escape($fieldname) . "`";
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}
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}
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$sql = sprintf("DROP VIEW IF EXISTS `%s`", DBA::escape($name));
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if ($verbose) {
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echo $sql . ";\n";
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}
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if ($action) {
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DBA::e($sql);
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}
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$sql = sprintf("CREATE VIEW `%s` AS SELECT \n\t", DBA::escape($name)) .
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implode(",\n\t", $sql_rows) . "\n\t" . $structure['query'];
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if ($verbose) {
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echo $sql . ";\n";
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}
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if ($action) {
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$r = DBA::e($sql);
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}
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return $r;
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}
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}
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