Performance: Avoid queries where there is no media or category

database.sql

@@ -1,6 +1,6 @@
 -- ------------------------------------------
 -- Friendica 2022.05-rc (Siberian Iris)
--- DB_UPDATE_VERSION 1463
+-- DB_UPDATE_VERSION 1464
 -- ------------------------------------------
 
 
@@ -1816,6 +1816,8 @@ CREATE VIEW `post-user-view` AS SELECT
 	`post-question`.`multiple` AS `question-multiple`,
 	`post-question`.`voters` AS `question-voters`,
 	`post-question`.`end-time` AS `question-end-time`,
+	EXISTS(SELECT `uri-id` FROM `post-category` WHERE `post-category`.`uri-id` = `post-user`.`uri-id` AND `post-category`.`uid` = `post-user`.`uid`) AS `has-categories`,
+	EXISTS(SELECT `id` FROM `post-media` WHERE `post-media`.`uri-id` = `post-user`.`uri-id`) AS `has-media`,
 	`diaspora-interaction`.`interaction` AS `signed_text`,
 	`parent-item-uri`.`guid` AS `parent-guid`,
 	`parent-post`.`network` AS `parent-network`,
@@ -1985,6 +1987,8 @@ CREATE VIEW `post-thread-user-view` AS SELECT
 	`post-question`.`multiple` AS `question-multiple`,
 	`post-question`.`voters` AS `question-voters`,
 	`post-question`.`end-time` AS `question-end-time`,
+	EXISTS(SELECT `uri-id` FROM `post-category` WHERE `post-category`.`uri-id` = `post-thread-user`.`uri-id` AND `post-category`.`uid` = `post-thread-user`.`uid`) AS `has-categories`,
+	EXISTS(SELECT `id` FROM `post-media` WHERE `post-media`.`uri-id` = `post-thread-user`.`uri-id`) AS `has-media`,
 	`diaspora-interaction`.`interaction` AS `signed_text`,
 	`parent-item-uri`.`guid` AS `parent-guid`,
 	`parent-post`.`network` AS `parent-network`,
@@ -2120,6 +2124,8 @@ CREATE VIEW `post-view` AS SELECT
 	`post-question`.`multiple` AS `question-multiple`,
 	`post-question`.`voters` AS `question-voters`,
 	`post-question`.`end-time` AS `question-end-time`,
+	0 AS `has-categories`,
+	EXISTS(SELECT `id` FROM `post-media` WHERE `post-media`.`uri-id` = `post`.`uri-id`) AS `has-media`,
 	`diaspora-interaction`.`interaction` AS `signed_text`,
 	`parent-item-uri`.`guid` AS `parent-guid`,
 	`parent-post`.`network` AS `parent-network`,
@@ -2251,6 +2257,8 @@ CREATE VIEW `post-thread-view` AS SELECT
 	`post-question`.`multiple` AS `question-multiple`,
 	`post-question`.`voters` AS `question-voters`,
 	`post-question`.`end-time` AS `question-end-time`,
+	0 AS `has-categories`,
+	EXISTS(SELECT `id` FROM `post-media` WHERE `post-media`.`uri-id` = `post-thread`.`uri-id`) AS `has-media`,
 	`diaspora-interaction`.`interaction` AS `signed_text`,
 	`parent-item-uri`.`guid` AS `parent-guid`,
 	`parent-post`.`network` AS `parent-network`,

src/Content/Item.php

@@ -93,7 +93,7 @@ class Item
 
 		$uid = $item['uid'] ?: $uid;
 
-		if (!Post\Category::existsForURIId($item['uri-id'], $uid)) {
+		if (empty($item['has-categories'])) {
 			return [$categories, $folders];
 		}
 

src/Model/Item.php

@@ -97,6 +97,7 @@ class Item
 		'event-summary', 'event-desc', 'event-location', 'event-type',
 		'event-nofinish', 'event-ignore', 'event-id',
 		"question-id", "question-multiple", "question-voters", "question-end-time",
+		"has-categories", "has-media",
 		'delivery_queue_count', 'delivery_queue_done', 'delivery_queue_failed'
 	];
 
@@ -2788,7 +2789,7 @@ class Item
 			$shared_item = Post::selectFirst(['uri-id', 'plink'], ['guid' => $shared['guid']]);
 			$shared_uri_id = $shared_item['uri-id'] ?? 0;
 			$shared_links = [strtolower($shared_item['plink'] ?? '')];
-			$shared_attachments = Post\Media::splitAttachments($shared_uri_id, $shared['guid']);
+			$shared_attachments = Post\Media::splitAttachments($shared_uri_id, $shared['guid'], [], $item['has-media']);
 			$shared_links = array_merge($shared_links, array_column($shared_attachments['visual'], 'url'));
 			$shared_links = array_merge($shared_links, array_column($shared_attachments['link'], 'url'));
 			$shared_links = array_merge($shared_links, array_column($shared_attachments['additional'], 'url'));
@@ -2797,7 +2798,7 @@ class Item
 			$shared_uri_id = 0;
 			$shared_links = [];
 		}
-		$attachments = Post\Media::splitAttachments($item['uri-id'], $item['guid'] ?? '', $shared_links);
+		$attachments = Post\Media::splitAttachments($item['uri-id'], $item['guid'] ?? '', $shared_links, $item['has-media']);
 		$item['body'] = self::replaceVisualAttachments($attachments, $item['body'] ?? '');
 
 		$item['body'] = preg_replace("/\s*\[attachment .*?\].*?\[\/attachment\]\s*/ism", "\n", $item['body']);

src/Model/Post/Media.php

@@ -547,12 +547,17 @@ class Media
 	 * @param int    $uri_id
 	 * @param string $guid
 	 * @param array  $links list of links that shouldn't be added
+	 * @param bool   $has_media
 	 * @return array attachments
 	 */
-	public static function splitAttachments(int $uri_id, string $guid = '', array $links = [])
+	public static function splitAttachments(int $uri_id, string $guid = '', array $links = [], bool $has_media = true)
 	{
 		$attachments = ['visual' => [], 'link' => [], 'additional' => []];
 
+		if (!$has_media) {
+			return $attachments;
+		}
+
 		$media = self::getByURIId($uri_id);
 		if (empty($media)) {
 			return $attachments;

static/dbstructure.config.php

@@ -55,7 +55,7 @@
 use Friendica\Database\DBA;
 
 if (!defined('DB_UPDATE_VERSION')) {
-	define('DB_UPDATE_VERSION', 1463);
+	define('DB_UPDATE_VERSION', 1464);
 }
 
 return [

static/dbview.config.php

@@ -194,6 +194,8 @@
 			"question-multiple" => ["post-question", "multiple"],
 			"question-voters" => ["post-question", "voters"],
 			"question-end-time" => ["post-question", "end-time"],
+			"has-categories" => "EXISTS(SELECT `uri-id` FROM `post-category` WHERE `post-category`.`uri-id` = `post-user`.`uri-id` AND `post-category`.`uid` = `post-user`.`uid`)",
+			"has-media" => "EXISTS(SELECT `id` FROM `post-media` WHERE `post-media`.`uri-id` = `post-user`.`uri-id`)",
 			"signed_text" => ["diaspora-interaction", "interaction"],
 			"parent-guid" => ["parent-item-uri", "guid"],
 			"parent-network" => ["parent-post", "network"],
@@ -361,6 +363,8 @@
 			"question-multiple" => ["post-question", "multiple"],
 			"question-voters" => ["post-question", "voters"],
 			"question-end-time" => ["post-question", "end-time"],
+			"has-categories" => "EXISTS(SELECT `uri-id` FROM `post-category` WHERE `post-category`.`uri-id` = `post-thread-user`.`uri-id` AND `post-category`.`uid` = `post-thread-user`.`uid`)",
+			"has-media" => "EXISTS(SELECT `id` FROM `post-media` WHERE `post-media`.`uri-id` = `post-thread-user`.`uri-id`)",
 			"signed_text" => ["diaspora-interaction", "interaction"],
 			"parent-guid" => ["parent-item-uri", "guid"],
 			"parent-network" => ["parent-post", "network"],
@@ -494,6 +498,8 @@
 			"question-multiple" => ["post-question", "multiple"],
 			"question-voters" => ["post-question", "voters"],
 			"question-end-time" => ["post-question", "end-time"],
+			"has-categories" => "0",
+			"has-media" => "EXISTS(SELECT `id` FROM `post-media` WHERE `post-media`.`uri-id` = `post`.`uri-id`)",
 			"signed_text" => ["diaspora-interaction", "interaction"],
 			"parent-guid" => ["parent-item-uri", "guid"],
 			"parent-network" => ["parent-post", "network"],
@@ -623,6 +629,8 @@
 			"question-multiple" => ["post-question", "multiple"],
 			"question-voters" => ["post-question", "voters"],
 			"question-end-time" => ["post-question", "end-time"],
+			"has-categories" => "0",
+			"has-media" => "EXISTS(SELECT `id` FROM `post-media` WHERE `post-media`.`uri-id` = `post-thread`.`uri-id`)",
 			"signed_text" => ["diaspora-interaction", "interaction"],
 			"parent-guid" => ["parent-item-uri", "guid"],
 			"parent-network" => ["parent-post", "network"],