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We now can define views

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Michael 2020-04-23 06:19:44 +00:00
commit 63ebbb8a16
5 changed files with 243 additions and 2 deletions
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45
database.sql
View file

@ -1,6 +1,6 @@
-- ------------------------------------------
-- Friendica 2020.06-dev (Red Hot Poker)
-- DB_UPDATE_VERSION 1338
-- DB_UPDATE_VERSION 1340
-- ------------------------------------------
@ -1175,6 +1175,31 @@ CREATE TABLE IF NOT EXISTS `term` (
INDEX `guid` (`guid`(64))
) DEFAULT COLLATE utf8mb4_general_ci COMMENT='item taxonomy (categories, tags, etc.) table';
--
-- TABLE tag
--
CREATE TABLE IF NOT EXISTS `tag` (
`id` int unsigned NOT NULL auto_increment COMMENT '',
`name` varchar(96) NOT NULL DEFAULT '' COMMENT '',
`url` varbinary(255) NOT NULL DEFAULT '' COMMENT '',
PRIMARY KEY(`id`),
UNIQUE INDEX `type_name_url` (`name`,`url`),
INDEX `url` (`url`)
) DEFAULT COLLATE utf8mb4_general_ci COMMENT='tags and mentions';
--
-- TABLE post-tag
--
CREATE TABLE IF NOT EXISTS `post-tag` (
`uri-id` int unsigned NOT NULL COMMENT 'Id of the item-uri table entry that contains the item uri',
`type` tinyint unsigned NOT NULL DEFAULT 0 COMMENT '',
`tid` int unsigned NOT NULL DEFAULT 0 COMMENT '',
`cid` int unsigned NOT NULL DEFAULT 0 COMMENT 'Contact id of the mentioned public contact',
PRIMARY KEY(`uri-id`,`type`,`tid`,`cid`),
INDEX `uri-id` (`tid`),
INDEX `cid` (`tid`)
) DEFAULT COLLATE utf8mb4_general_ci COMMENT='post relation to tags';
--
-- TABLE thread
--
@ -1361,4 +1386,22 @@ CREATE TABLE IF NOT EXISTS `storage` (
PRIMARY KEY(`id`)
) DEFAULT COLLATE utf8mb4_general_ci COMMENT='Data stored by Database storage backend';
--
-- VIEW tag-view
--
DROP VIEW IF EXISTS `tag-view`;
CREATE VIEW `tag-view` AS SELECT
`post-tag`.`uri-id` AS `uri-id`,
`item-uri`.`uri` AS `uri`,
`item-uri`.`guid` AS `guid`,
`post-tag`.`type` AS `type`,
`post-tag`.`tid` AS `tid`,
`post-tag`.`cid` AS `cid`,
CASE `cid` WHEN 0 THEN `tag`.`name` ELSE `contact`.`name` END AS `name`,
CASE `cid` WHEN 0 THEN `tag`.`url` ELSE `contact`.`url` END AS `url`
FROM `post-tag`
INNER JOIN `item-uri` ON `item-uri`.id = `post-tag`.`uri-id`
LEFT JOIN `tag` ON `post-tag`.`tid` = `tag`.`id`
LEFT JOIN `contact` ON `post-tag`.`cid` = `contact`.`id`;

4
src/Database/DBStructure.php
View file

@ -112,6 +112,8 @@ class DBStructure
echo "\n";
}
DBView::printStructure($basePath);
}
/**
@ -594,6 +596,8 @@ class DBStructure
}
}
DBView::create($verbose, $action);
if ($action && !$install) {
DI::config()->set('system', 'maintenance', 0);
DI::config()->set('system', 'maintenance_reason', '');

138
src/Database/DBView.php Normal file
View file

@ -0,0 +1,138 @@
<?php
/**
* @copyright Copyright (C) 2020, Friendica
*
* @license GNU AGPL version 3 or any later version
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*
*/
namespace Friendica\Database;
use Exception;
use Friendica\Core\Hook;
use Friendica\Core\Logger;
use Friendica\DI;
use Friendica\Util\DateTimeFormat;
use phpDocumentor\Reflection\Types\Boolean;
require_once __DIR__ . '/../../include/dba.php';
class DBView
{
/**
* view definition loaded from config/dbview.config.php
*
* @var array
*/
private static $definition = [];
/**
* Loads the database structure definition from the config/dbview.config.php file.
* On first pass, defines DB_UPDATE_VERSION constant.
*
* @see static/dbview.config.php
* @param boolean $with_addons_structure Whether to tack on addons additional tables
* @param string $basePath The base path of this application
* @return array
* @throws Exception
*/
public static function definition($basePath = '', $with_addons_structure = true)
{
if (!self::$definition) {
if (empty($basePath)) {
$basePath = DI::app()->getBasePath();
}
$filename = $basePath . '/static/dbview.config.php';
if (!is_readable($filename)) {
throw new Exception('Missing database view config file static/dbview.config.php');
}
$definition = require $filename;
if (!$definition) {
throw new Exception('Corrupted database view config file static/dbview.config.php');
}
self::$definition = $definition;
} else {
$definition = self::$definition;
}
if ($with_addons_structure) {
Hook::callAll('dbview_definition', $definition);
}
return $definition;
}
public static function create(bool $verbose, bool $action)
{
$definition = self::definition();
foreach ($definition as $name => $structure) {
self::createview($name, $structure, $verbose, $action);
}
}
public static function printStructure($basePath)
{
$database = self::definition($basePath, false);
foreach ($database AS $name => $structure) {
echo "--\n";
echo "-- VIEW $name\n";
echo "--\n";
self::createView($name, $structure, true, false);
echo "\n";
}
}
private static function createview($name, $structure, $verbose, $action)
{
$r = true;
$sql_rows = [];
foreach ($structure["fields"] AS $fieldname => $origin) {
$sql_rows[] = $origin . " AS `" . DBA::escape($fieldname) . "`";
}
$sql = sprintf("DROP VIEW IF EXISTS `%s`", DBA::escape($name));
if ($verbose) {
echo $sql . ";\n";
}
if ($action) {
DBA::e($sql);
}
$sql = sprintf("CREATE VIEW `%s` AS SELECT \n\t", DBA::escape($name)) .
implode(",\n\t", $sql_rows) . "\n\t" . $structure['query'];
if ($verbose) {
echo $sql . ";\n";
}
if ($action) {
$r = DBA::e($sql);
}
return $r;
}
}

2
static/dbstructure.config.php
View file

@ -51,7 +51,7 @@
use Friendica\Database\DBA;
if (!defined('DB_UPDATE_VERSION')) {
define('DB_UPDATE_VERSION', 1339);
define('DB_UPDATE_VERSION', 1340);
}
return [

56
static/dbview.config.php Executable file
View file

@ -0,0 +1,56 @@
<?php
/**
* @copyright Copyright (C) 2020, Friendica
*
* @license GNU AGPL version 3 or any later version
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*
* Main view structure configuration file.
*
* Here are described all the view Friendica needs to work.
*
* Syntax (braces indicate optionale values):
* "<view name>" => [
* "fields" => [
* "<field name>" => "`table`.`field`",
* "<field name>" => "`other-table`.`field`",
* "<field name>" => "SQL expression",
* ...
* ],
* "query" => "FROM `table` INNER JOIN `other-table` ..."
* ],
* ],
*
* If you need to make any change, make sure to increment the DB_UPDATE_VERSION constant value in dbstructure.config.php.
*
*/
return [
"tag-view" => [
"fields" => ["uri-id" => "`post-tag`.`uri-id`",
"uri" => "`item-uri`.`uri`",
"guid" => "`item-uri`.`guid`",
"type" => "`post-tag`.`type`",
"tid" => "`post-tag`.`tid`",
"cid" => "`post-tag`.`cid`",
"name" => "CASE `cid` WHEN 0 THEN `tag`.`name` ELSE `contact`.`name` END",
"url" => "CASE `cid` WHEN 0 THEN `tag`.`url` ELSE `contact`.`url` END"],
"query" => "FROM `post-tag`
INNER JOIN `item-uri` ON `item-uri`.id = `post-tag`.`uri-id`
LEFT JOIN `tag` ON `post-tag`.`tid` = `tag`.`id`
LEFT JOIN `contact` ON `post-tag`.`cid` = `contact`.`id`"
]
];