We now can define views
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Michael
parent
43b8bdea07
commit
63ebbb8a16
45
database.sql
45
database.sql
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@ -1,6 +1,6 @@
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-- ------------------------------------------
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-- Friendica 2020.06-dev (Red Hot Poker)
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-- DB_UPDATE_VERSION 1338
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-- DB_UPDATE_VERSION 1340
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-- ------------------------------------------
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@ -1175,6 +1175,31 @@ CREATE TABLE IF NOT EXISTS `term` (
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INDEX `guid` (`guid`(64))
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) DEFAULT COLLATE utf8mb4_general_ci COMMENT='item taxonomy (categories, tags, etc.) table';
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--
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-- TABLE tag
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--
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CREATE TABLE IF NOT EXISTS `tag` (
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`id` int unsigned NOT NULL auto_increment COMMENT '',
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`name` varchar(96) NOT NULL DEFAULT '' COMMENT '',
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`url` varbinary(255) NOT NULL DEFAULT '' COMMENT '',
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PRIMARY KEY(`id`),
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UNIQUE INDEX `type_name_url` (`name`,`url`),
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INDEX `url` (`url`)
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) DEFAULT COLLATE utf8mb4_general_ci COMMENT='tags and mentions';
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--
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-- TABLE post-tag
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--
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CREATE TABLE IF NOT EXISTS `post-tag` (
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`uri-id` int unsigned NOT NULL COMMENT 'Id of the item-uri table entry that contains the item uri',
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`type` tinyint unsigned NOT NULL DEFAULT 0 COMMENT '',
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`tid` int unsigned NOT NULL DEFAULT 0 COMMENT '',
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`cid` int unsigned NOT NULL DEFAULT 0 COMMENT 'Contact id of the mentioned public contact',
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PRIMARY KEY(`uri-id`,`type`,`tid`,`cid`),
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INDEX `uri-id` (`tid`),
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INDEX `cid` (`tid`)
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) DEFAULT COLLATE utf8mb4_general_ci COMMENT='post relation to tags';
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--
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-- TABLE thread
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--
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@ -1361,4 +1386,22 @@ CREATE TABLE IF NOT EXISTS `storage` (
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PRIMARY KEY(`id`)
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) DEFAULT COLLATE utf8mb4_general_ci COMMENT='Data stored by Database storage backend';
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--
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-- VIEW tag-view
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--
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DROP VIEW IF EXISTS `tag-view`;
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CREATE VIEW `tag-view` AS SELECT
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`post-tag`.`uri-id` AS `uri-id`,
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`item-uri`.`uri` AS `uri`,
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`item-uri`.`guid` AS `guid`,
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`post-tag`.`type` AS `type`,
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`post-tag`.`tid` AS `tid`,
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`post-tag`.`cid` AS `cid`,
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CASE `cid` WHEN 0 THEN `tag`.`name` ELSE `contact`.`name` END AS `name`,
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CASE `cid` WHEN 0 THEN `tag`.`url` ELSE `contact`.`url` END AS `url`
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FROM `post-tag`
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INNER JOIN `item-uri` ON `item-uri`.id = `post-tag`.`uri-id`
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LEFT JOIN `tag` ON `post-tag`.`tid` = `tag`.`id`
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LEFT JOIN `contact` ON `post-tag`.`cid` = `contact`.`id`;
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@ -112,6 +112,8 @@ class DBStructure
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echo "\n";
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}
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DBView::printStructure($basePath);
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}
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/**
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@ -594,6 +596,8 @@ class DBStructure
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}
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}
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DBView::create($verbose, $action);
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if ($action && !$install) {
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DI::config()->set('system', 'maintenance', 0);
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DI::config()->set('system', 'maintenance_reason', '');
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@ -0,0 +1,138 @@
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<?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\Core\Logger;
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use Friendica\DI;
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use Friendica\Util\DateTimeFormat;
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use phpDocumentor\Reflection\Types\Boolean;
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require_once __DIR__ . '/../../include/dba.php';
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class DBView
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{
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/**
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* view definition loaded from config/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 config/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 => $origin) {
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$sql_rows[] = $origin . " AS `" . DBA::escape($fieldname) . "`";
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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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@ -51,7 +51,7 @@
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use Friendica\Database\DBA;
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if (!defined('DB_UPDATE_VERSION')) {
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define('DB_UPDATE_VERSION', 1339);
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define('DB_UPDATE_VERSION', 1340);
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}
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return [
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@ -0,0 +1,56 @@
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<?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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* Main view structure configuration file.
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*
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* Here are described all the view Friendica needs to work.
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*
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* Syntax (braces indicate optionale values):
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* "<view name>" => [
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* "fields" => [
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* "<field name>" => "`table`.`field`",
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* "<field name>" => "`other-table`.`field`",
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* "<field name>" => "SQL expression",
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* ...
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* ],
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* "query" => "FROM `table` INNER JOIN `other-table` ..."
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* ],
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* ],
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*
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* If you need to make any change, make sure to increment the DB_UPDATE_VERSION constant value in dbstructure.config.php.
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*
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*/
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return [
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"tag-view" => [
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"fields" => ["uri-id" => "`post-tag`.`uri-id`",
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"uri" => "`item-uri`.`uri`",
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"guid" => "`item-uri`.`guid`",
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"type" => "`post-tag`.`type`",
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"tid" => "`post-tag`.`tid`",
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"cid" => "`post-tag`.`cid`",
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"name" => "CASE `cid` WHEN 0 THEN `tag`.`name` ELSE `contact`.`name` END",
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"url" => "CASE `cid` WHEN 0 THEN `tag`.`url` ELSE `contact`.`url` END"],
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"query" => "FROM `post-tag`
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INNER JOIN `item-uri` ON `item-uri`.id = `post-tag`.`uri-id`
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LEFT JOIN `tag` ON `post-tag`.`tid` = `tag`.`id`
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LEFT JOIN `contact` ON `post-tag`.`cid` = `contact`.`id`"
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]
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];
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