mirror of
https://github.com/LemmyNet/lemmy.git
synced 2024-11-29 07:41:20 +00:00
Merge branch 'bliss' of https://github.com/dullbananas/lemmy into bliss
This commit is contained in:
Dull Bananas
commit
94e545fe52
8 changed files with 468 additions and 83 deletions
|
|
@ -163,7 +163,7 @@ steps:
|
|||
DATABASE_URL: postgres://lemmy:password@database:5432/lemmy
|
||||
commands:
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||||
- diesel migration run
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||||
- psql -f replaceable_schema.sql $DATABASE_URL
|
||||
- psql -f replaceable_schema.sql
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- diesel migration redo
|
||||
when: *slow_check_paths
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||||
|
||||
|
|
|
|||
|
|
@ -1,3 +1,52 @@
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-- Drop functions and use `CASCADE` to drop the triggers that use them
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||||
DROP FUNCTION comment_aggregates_comment, comment_aggregates_score, comment_removed_resolve_reports, community_aggregates_comment_count, community_aggregates_community, community_aggregates_post_count, community_aggregates_post_count_insert, community_aggregates_subscriber_count, person_aggregates_comment_count, person_aggregates_comment_score, person_aggregates_person, person_aggregates_post_count, person_aggregates_post_insert, person_aggregates_post_score, post_aggregates_comment_count, post_aggregates_featured_community, post_aggregates_featured_local, post_aggregates_post, post_aggregates_score, post_removed_resolve_reports, site_aggregates_comment_delete, site_aggregates_comment_insert, site_aggregates_community_insert, site_aggregates_person_delete, site_aggregates_person_insert, site_aggregates_post_delete, site_aggregates_post_insert, site_aggregates_post_update, site_aggregates_site, was_removed_or_deleted, was_restored_or_created CASCADE;
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|
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-- Fix values that might be incorrect because of the old triggers
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UPDATE
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post_aggregates
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SET
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featured_local = post.featured_local,
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featured_community = post.featured_community
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FROM
|
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post
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||||
WHERE
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post_aggregates.post_id = post.id;
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|
||||
UPDATE
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community_aggregates
|
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SET
|
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comments = counted.comments
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FROM (
|
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SELECT
|
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community.id AS community_id,
|
||||
count(*) AS comments
|
||||
FROM
|
||||
comment,
|
||||
WHERE
|
||||
NOT (comment.deleted
|
||||
OR comment.removed
|
||||
OR EXISTS (
|
||||
SELECT
|
||||
1
|
||||
FROM
|
||||
post
|
||||
WHERE
|
||||
post.id = comment.post_id
|
||||
AND (post.deleted OR post.removed)
|
||||
))
|
||||
GROUP BY
|
||||
community.id) AS counted
|
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WHERE
|
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community_aggregates.community_id = counted.community_id;
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||||
|
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UPDATE
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||||
site_aggregates
|
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SET
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communities = (
|
||||
SELECT
|
||||
count(*)
|
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FROM
|
||||
community
|
||||
WHERE
|
||||
local);
|
||||
|
||||
|
|
|
|||
|
|
@ -45,9 +45,9 @@
|
|||
|
||||
## Sobre El Proyecto
|
||||
|
||||
| Escritorio | Móvil |
|
||||
| ---------------------------------------------------------------------------------------------------------- | ----------------------------------------------------------------------------------------------------------- |
|
||||
|  |  |
|
||||
| Escritorio | Móvil |
|
||||
| --------------------------------------------------------------------------------------------------------------- | ----------------------------------------------------------------------------------------------------------- |
|
||||
|  |  |
|
||||
|
||||
[Lemmy](https://github.com/LemmyNet/lemmy) es similar a sitios como [Menéame](https://www.meneame.net/), [Reddit](https://reddit.com), [Lobste.rs](https://lobste.rs), [Raddle](https://raddle.me), o [Hacker News](https://news.ycombinator.com/): te subscribes a los foros que te interesan, publicas enlaces y debates, luego votas y comentas en ellos. Entre bastidores, es muy diferente; cualquiera puede gestionar fácilmente un servidor, y todos estos servidores son federados (piensa en el correo electrónico), y conectados al mismo universo, llamado [Fediverso](https://es.wikipedia.org/wiki/Fediverso).
|
||||
|
||||
|
|
|
|||
|
|
@ -47,9 +47,9 @@
|
|||
|
||||
## プロジェクトについて
|
||||
|
||||
| デスクトップ | モバイル |
|
||||
| ---------------------------------------------------------------------------------------------------------- | ----------------------------------------------------------------------------------------------------------- |
|
||||
|  |  |
|
||||
| デスクトップ | モバイル |
|
||||
| --------------------------------------------------------------------------------------------------------------- | ----------------------------------------------------------------------------------------------------------- |
|
||||
|  |  |
|
||||
|
||||
[Lemmy](https://github.com/LemmyNet/lemmy) は、[Reddit](https://reddit.com)、[Lobste.rs](https://lobste.rs)、[Hacker News](https://news.ycombinator.com/) といったサイトに似ています。興味のあるフォーラムを購読してリンクや議論を掲載し、投票したり、コメントしたりしています。誰でも簡単にサーバーを運営することができ、これらのサーバーはすべて連合しており（電子メールを考えてください）、[Fediverse](https://en.wikipedia.org/wiki/Fediverse) と呼ばれる同じ宇宙に接続されています。
|
||||
|
||||
|
|
|
|||
|
|
@ -45,9 +45,9 @@
|
|||
|
||||
## О проекте
|
||||
|
||||
| Десктоп | Мобильный |
|
||||
| ---------------------------------------------------------------------------------------------------------- | ----------------------------------------------------------------------------------------------------------- |
|
||||
|  |  |
|
||||
| Десктоп | Мобильный |
|
||||
| --------------------------------------------------------------------------------------------------------------- | ----------------------------------------------------------------------------------------------------------- |
|
||||
|  |  |
|
||||
|
||||
[Lemmy](https://github.com/LemmyNet/lemmy) это аналог таких сайтов как [Reddit](https://reddit.com), [Lobste.rs](https://lobste.rs), или [Hacker News](https://news.ycombinator.com/): вы подписываетесь на форумы, которые вас интересуют , размещаете ссылки и дискутируете, затем голосуете и комментируете их. Однако за кулисами всё совсем по-другому; любой может легко запустить сервер, и все эти серверы объединены (например электронная почта) и подключены к одной вселенной, именуемой [Федиверс](https://ru.wikipedia.org/wiki/Fediverse).
|
||||
|
||||
|
|
|
|||
|
|
@ -47,9 +47,9 @@
|
|||
|
||||
## 关于项目
|
||||
|
||||
| 桌面应用 | 移动应用 |
|
||||
| ---------------------------------------------------------------------------------------------------------- | ----------------------------------------------------------------------------------------------------------- |
|
||||
|  |  |
|
||||
| 桌面应用 | 移动应用 |
|
||||
| --------------------------------------------------------------------------------------------------------------- | ----------------------------------------------------------------------------------------------------------- |
|
||||
|  |  |
|
||||
|
||||
[Lemmy](https://github.com/LemmyNet/lemmy) 与 [Reddit](https://reddit.com)、[Lobste.rs](https://lobste.rs) 或 [Hacker News](https://news.ycombinator.com/) 等网站类似：你可以订阅你感兴趣的论坛，发布链接和讨论，然后进行投票或评论。但在幕后，Lemmy 和他们不同——任何人都可以很容易地运行一个服务器，所有服务器都是联邦式的（想想电子邮件），并连接到 [联邦宇宙](https://zh.wikipedia.org/wiki/%E8%81%94%E9%82%A6%E5%AE%87%E5%AE%99)。
|
||||
|
||||
|
|
|
|||
|
|
@ -48,9 +48,9 @@
|
|||
|
||||
## 關於專案
|
||||
|
||||
| 桌面設備 | 行動裝置 |
|
||||
| ---------------------------------------------------------------------------------------------------------- | ----------------------------------------------------------------------------------------------------------- |
|
||||
|  |  |
|
||||
| 桌面設備 | 行動裝置 |
|
||||
| --------------------------------------------------------------------------------------------------------------- | ----------------------------------------------------------------------------------------------------------- |
|
||||
|  |  |
|
||||
|
||||
[Lemmy](https://github.com/LemmyNet/lemmy) 與 [Reddit](https://reddit.com)、[Lobste.rs](https://lobste.rs) 或 [Hacker News](https://news.ycombinator.com/) 等網站類似：你可以訂閱你感興趣的論壇，釋出連結和討論，然後進行投票或評論。但在幕後，Lemmy 和他們不同——任何人都可以很容易地架設一個伺服器，所有伺服器都是聯邦式的（想想電子郵件），並與 [聯邦宇宙](https://zh.wikipedia.org/wiki/%E8%81%94%E9%82%A6%E5%AE%87%E5%AE%99) 互聯。
|
||||
|
||||
|
|
|
|||
|
|
@ -18,8 +18,10 @@ DROP SCHEMA IF EXISTS r CASCADE;
|
|||
CREATE SCHEMA r;
|
||||
|
||||
-- Rank calculations
|
||||
CREATE OR REPLACE FUNCTION r.controversy_rank (upvotes numeric, downvotes numeric)
|
||||
CREATE FUNCTION r.controversy_rank (upvotes numeric, downvotes numeric)
|
||||
RETURNS float
|
||||
LANGUAGE plpgsql
|
||||
IMMUTABLE PARALLEL SAFE
|
||||
AS $$
|
||||
BEGIN
|
||||
IF downvotes <= 0 OR upvotes <= 0 THEN
|
||||
|
|
@ -32,9 +34,7 @@ BEGIN
|
|||
END;
|
||||
END IF;
|
||||
END;
|
||||
$$
|
||||
LANGUAGE plpgsql
|
||||
IMMUTABLE;
|
||||
$$;
|
||||
|
||||
-- Selects both old and new rows in a trigger and allows using `sum(count_diff)` to get the number to add to a count
|
||||
CREATE FUNCTION r.combine_transition_tables ()
|
||||
|
|
@ -54,38 +54,415 @@ CREATE FUNCTION r.combine_transition_tables ()
|
|||
new_table;
|
||||
$$;
|
||||
|
||||
-- These triggers resolve an item's reports when the item is marked as removed.
|
||||
CREATE PROCEDURE r.resolve_reports_when_target_removed (target_name text)
|
||||
-- Define functions
|
||||
CREATE FUNCTION r.creator_id_from_post_aggregates (agg post_aggregates)
|
||||
RETURNS int
|
||||
SELECT
|
||||
creator_id
|
||||
FROM
|
||||
agg;
|
||||
|
||||
CREATE FUNCTION r.creator_id_from_comment_aggregates (agg comment_aggregates)
|
||||
RETURNS int
|
||||
SELECT
|
||||
creator_id
|
||||
FROM
|
||||
comment
|
||||
WHERE
|
||||
comment.id = agg.comment_id LIMIT 1;
|
||||
|
||||
-- Create triggers for both post and comments
|
||||
CREATE PROCEDURE r.post_or_comment (thing_type text)
|
||||
LANGUAGE plpgsql
|
||||
AS $a$
|
||||
BEGIN
|
||||
EXECUTE format($b$ CREATE FUNCTION r.resolve_reports_when_%1$s_removed ( )
|
||||
EXECUTE replace($b$
|
||||
-- When a thing is removed, resolve its reports
|
||||
CREATE FUNCTION r.resolve_reports_when_thing_removed ( )
|
||||
RETURNS TRIGGER
|
||||
LANGUAGE plpgsql
|
||||
AS $$
|
||||
BEGIN
|
||||
UPDATE
|
||||
%1$s_report AS report
|
||||
thing_report
|
||||
SET
|
||||
resolved = TRUE, resolver_id = mod_person_id, updated = now()
|
||||
FROM new_removal
|
||||
resolved = TRUE, resolver_id = first_removal.mod_person_id, updated = first_removal.when_
|
||||
FROM ( SELECT
|
||||
thing_id,
|
||||
min(when_) AS when_
|
||||
FROM new_removal
|
||||
WHERE
|
||||
new_removal.removed
|
||||
GROUP BY
|
||||
thing_id) AS first_removal
|
||||
WHERE
|
||||
report.%1$s_id = new_removal.%1$s_id
|
||||
AND new_removal.removed;
|
||||
report.thing_id = first_removal.thing_id
|
||||
AND NOT report.resolved
|
||||
AND COALESCE(report.updated < first_removal.when_, TRUE);
|
||||
RETURN NULL;
|
||||
END $$;
|
||||
CREATE TRIGGER resolve_reports
|
||||
AFTER INSERT ON mod_remove_%1$s REFERENCING NEW TABLE AS new_removal
|
||||
AFTER INSERT ON mod_remove_thing REFERENCING NEW TABLE AS new_removal
|
||||
FOR EACH STATEMENT
|
||||
EXECUTE FUNCTION r.resolve_reports_when_%1$s_removed ( );
|
||||
EXECUTE FUNCTION r.resolve_reports_when_thing_removed ( );
|
||||
-- When a thing gets a vote, update its aggregates and its creator's aggregates
|
||||
CREATE FUNCTION r.thing_aggregates_from_like ( )
|
||||
RETURNS TRIGGER
|
||||
LANGUAGE plpgsql
|
||||
AS $$
|
||||
BEGIN
|
||||
WITH thing_diff AS (
|
||||
UPDATE
|
||||
thing_aggregates AS a
|
||||
SET
|
||||
score = a.score + diff.upvotes - diff.downvotes,
|
||||
upvotes = a.upvotes + diff.upvotes,
|
||||
downvotes = a.downvotes + diff.downvotes,
|
||||
controversy_rank = controversy_rank ((a.upvotes + diff.upvotes)::numeric, (a.downvotes + diff.downvotes)::numeric)
|
||||
FROM (
|
||||
SELECT
|
||||
thing_id,
|
||||
sum(count_diff) FILTER (WHERE score = 1) AS upvotes,
|
||||
sum(count_diff) FILTER (WHERE score != 1) AS downvotes
|
||||
FROM
|
||||
r.combine_transition_tables ()
|
||||
GROUP BY
|
||||
thing_id) AS diff
|
||||
WHERE
|
||||
a.thing_id = diff.thing_id
|
||||
RETURNING
|
||||
creator_id_from_thing_aggregates (a.*) AS creator_id,
|
||||
diff.upvotes - diff.downvotes AS score)
|
||||
UPDATE
|
||||
person_aggregates AS a
|
||||
SET
|
||||
thing_score = a.thing_score + diff.score
|
||||
FROM (
|
||||
SELECT
|
||||
creator_id,
|
||||
sum(score) AS score
|
||||
FROM
|
||||
target_diff
|
||||
GROUP BY
|
||||
creator_id) AS diff
|
||||
WHERE
|
||||
a.person_id = diff.creator_id;
|
||||
RETURN NULL;
|
||||
END $$;
|
||||
CREATE TRIGGER aggregates
|
||||
AFTER INSERT OR DELETE OR UPDATE OF score ON thing_like REFERENCING OLD TABLE AS old_table NEW TABLE AS new_table
|
||||
FOR EACH STATEMENT
|
||||
EXECUTE FUNCTION r.thing_aggregates_from_like;
|
||||
$b$,
|
||||
target_name);
|
||||
'thing',
|
||||
thing_type);
|
||||
END
|
||||
$a$;
|
||||
|
||||
CALL r.resolve_reports_when_target_removed ('comment');
|
||||
CALL r.post_or_comment ('post');
|
||||
|
||||
CALL r.resolve_reports_when_target_removed ('post');
|
||||
CALL r.post_or_comment ('comment');
|
||||
|
||||
-- Create triggers that update counts in parent aggregates
|
||||
CREATE FUNCTION r.parent_aggregates_from_comment ()
|
||||
RETURNS TRIGGER
|
||||
LANGUAGE plpgsql
|
||||
AS $$
|
||||
BEGIN
|
||||
WITH comment_group AS (
|
||||
SELECT
|
||||
post_id,
|
||||
creator_id,
|
||||
local,
|
||||
sum(count_diff) AS comments,
|
||||
FROM
|
||||
combine_transition_tables ()
|
||||
WHERE
|
||||
NOT (deleted
|
||||
OR removed)
|
||||
GROUP BY
|
||||
GROUPING SETS (post_id,
|
||||
creator_id,
|
||||
local)
|
||||
),
|
||||
unused_person_aggregates_update_result AS (
|
||||
UPDATE
|
||||
person_aggregates AS a
|
||||
SET
|
||||
comment_count = a.comment_count + comment_group.comments
|
||||
FROM
|
||||
comment_group
|
||||
WHERE
|
||||
a.person_id = comment_group.creator_id
|
||||
),
|
||||
unused_site_aggregates_update_result AS (
|
||||
UPDATE
|
||||
site_aggregates AS a
|
||||
SET
|
||||
comments = a.comments + comment_group.comments
|
||||
FROM
|
||||
comment_group
|
||||
WHERE
|
||||
comment_group.local
|
||||
),
|
||||
post_diff AS (
|
||||
UPDATE
|
||||
post_aggregates AS a
|
||||
SET
|
||||
comments = a.comments + comment_group.comments,
|
||||
newest_comment_time = GREATEST (a.newest_comment_time, (
|
||||
SELECT
|
||||
max(published)
|
||||
FROM new_table AS new_comment
|
||||
WHERE
|
||||
a.post_id = new_comment.post_id)
|
||||
LIMIT 1),
|
||||
newest_comment_time_necro = GREATEST (a.newest_comment_time_necro, (
|
||||
SELECT
|
||||
max(published)
|
||||
FROM new_table AS new_comment
|
||||
WHERE
|
||||
a.post_id = new_comment.post_id
|
||||
-- Ignore comments from the post's creator
|
||||
AND a.creator_id != new_comment.creator_id
|
||||
-- Ignore comments on old posts
|
||||
AND a.published > (new_comment.published - '2 days'::interval)
|
||||
LIMIT 1))
|
||||
FROM
|
||||
comment_group,
|
||||
LATERAL (
|
||||
SELECT
|
||||
*
|
||||
FROM
|
||||
post
|
||||
WHERE
|
||||
a.post_id = post.id
|
||||
LIMIT 1) AS post
|
||||
WHERE
|
||||
a.post_id = comment_group.post_id
|
||||
RETURNING
|
||||
a.community_id,
|
||||
diff.comments,
|
||||
NOT (post.deleted
|
||||
OR post.removed) AS include_in_community_aggregates)
|
||||
UPDATE
|
||||
community_aggregates AS a
|
||||
SET
|
||||
comments = a.comments + diff.comments
|
||||
FROM (
|
||||
SELECT
|
||||
community_id,
|
||||
sum(comments)
|
||||
FROM
|
||||
post_diff
|
||||
WHERE
|
||||
post_diff.include_in_community_aggregates
|
||||
GROUP BY
|
||||
community_id) AS diff
|
||||
WHERE
|
||||
a.community_id = diff.community_id;
|
||||
RETURN NULL;
|
||||
END
|
||||
$$;
|
||||
|
||||
CREATE TRIGGER parent_aggregates
|
||||
AFTER INSERT OR DELETE OR UPDATE OF deleted,
|
||||
removed ON comment REFERENCING OLD TABLE AS old_table NEW TABLE AS new_table
|
||||
FOR EACH STATEMENT
|
||||
EXECUTE FUNCTION r.parent_aggregates_from_comment ();
|
||||
|
||||
CREATE FUNCTION r.parent_aggregates_from_post ()
|
||||
RETURNS TRIGGER
|
||||
LANGUAGE plpgsql
|
||||
AS $$
|
||||
BEGIN
|
||||
WITH post_group AS (
|
||||
SELECT
|
||||
community_id,
|
||||
creator_id,
|
||||
local,
|
||||
sum(count_diff) AS posts,
|
||||
FROM
|
||||
combine_transition_tables ()
|
||||
WHERE
|
||||
NOT (deleted
|
||||
OR removed)
|
||||
GROUP BY
|
||||
GROUPING SETS (community_id,
|
||||
creator_id,
|
||||
local)
|
||||
),
|
||||
unused_person_aggregates_update_result AS (
|
||||
UPDATE
|
||||
person_aggregates AS a
|
||||
SET
|
||||
post_count = a.post_count + post_group.posts
|
||||
FROM
|
||||
post_group
|
||||
WHERE
|
||||
a.person_id = post_group.creator_id
|
||||
),
|
||||
unused_site_aggregates_update_result AS (
|
||||
UPDATE
|
||||
site_aggregates AS a
|
||||
SET
|
||||
posts = a.posts + post_group.posts
|
||||
FROM
|
||||
post_group
|
||||
WHERE
|
||||
post_group.local)
|
||||
UPDATE
|
||||
community_aggregates AS a
|
||||
SET
|
||||
posts = a.posts + post_group.posts
|
||||
FROM
|
||||
post_group
|
||||
WHERE
|
||||
a.community_id = post_group.community_id;
|
||||
RETURN NULL;
|
||||
END
|
||||
$$;
|
||||
|
||||
CREATE TRIGGER parent_aggregates
|
||||
AFTER INSERT OR DELETE OR UPDATE OF deleted,
|
||||
removed ON comment REFERENCING OLD TABLE AS old_table NEW TABLE AS new_table
|
||||
FOR EACH STATEMENT
|
||||
EXECUTE FUNCTION r.parent_aggregates_from_comment ();
|
||||
|
||||
CREATE FUNCTION site_aggregates_from_community ()
|
||||
RETURNS TRIGGER
|
||||
LANGUAGE plpgsql
|
||||
AS $$
|
||||
BEGIN
|
||||
UPDATE
|
||||
site_aggregates AS a
|
||||
SET
|
||||
communities = a.communities + diff.communities
|
||||
FROM (
|
||||
SELECT
|
||||
sum(change_diff) AS communities
|
||||
FROM
|
||||
combine_transition_tables ()
|
||||
WHERE
|
||||
local
|
||||
AND NOT (deleted
|
||||
OR removed)) AS diff;
|
||||
RETURN NULL;
|
||||
$$;
|
||||
|
||||
CREATE TRIGGER site_aggregates
|
||||
AFTER INSERT OR DELETE OR UPDATE OF deleted,
|
||||
removed ON community REFERENCING OLD TABLE AS old_table NEW TABLE AS new_table
|
||||
FOR EACH STATEMENT
|
||||
EXECUTE FUNCTION r.site_aggregates_from_community ();
|
||||
|
||||
CREATE FUNCTION site_aggregates_from_person ()
|
||||
RETURNS TRIGGER
|
||||
LANGUAGE plpgsql
|
||||
AS $$
|
||||
BEGIN
|
||||
UPDATE
|
||||
site_aggregates AS a
|
||||
SET
|
||||
users = a.users + diff.users
|
||||
FROM (
|
||||
SELECT
|
||||
sum(change_diff) AS users
|
||||
FROM
|
||||
combine_transition_tables ()
|
||||
WHERE
|
||||
local) AS diff;
|
||||
RETURN NULL;
|
||||
$$;
|
||||
|
||||
CREATE TRIGGER site_aggregates
|
||||
AFTER INSERT OR DELETE ON person REFERENCING OLD TABLE AS old_table NEW TABLE AS new_table
|
||||
FOR EACH STATEMENT
|
||||
EXECUTE FUNCTION r.site_aggregates_from_person ();
|
||||
|
||||
-- For community_aggregates.comments, don't include comments of deleted or removed posts
|
||||
CREATE FUNCTION r.update_comment_count_from_post ()
|
||||
RETURNS TRIGGER
|
||||
LANGUAGE plpgsql
|
||||
AS $$
|
||||
BEGIN
|
||||
UPDATE
|
||||
community_aggregates AS a
|
||||
SET
|
||||
comments = a.comments + diff.comments
|
||||
FROM (
|
||||
SELECT
|
||||
old_post.community_id,
|
||||
sum((
|
||||
CASE WHEN new_post.deleted
|
||||
AND new_post.removed THEN
|
||||
-1
|
||||
ELSE
|
||||
1
|
||||
END) * post_aggregates.comments) AS comments
|
||||
FROM
|
||||
new_post
|
||||
INNER JOIN old_post ON new_post.id = old_post.id
|
||||
AND (new_post.deleted
|
||||
AND new_post.removed) != (old_post.deleted
|
||||
AND old_post.removed),
|
||||
LATERAL (
|
||||
SELECT
|
||||
*
|
||||
FROM
|
||||
post_aggregates
|
||||
WHERE
|
||||
post_id = new_post.id
|
||||
LIMIT 1) AS post_aggregates
|
||||
GROUP BY
|
||||
old_post.community_id) AS diff
|
||||
WHERE
|
||||
a.community_id = diff.community_id;
|
||||
RETURN NULL;
|
||||
$$;
|
||||
|
||||
CREATE TRIGGER comment_count
|
||||
AFTER UPDATE OF deleted,
|
||||
removed ON post REFERENCING OLD TABLE AS old_post NEW TABLE AS new_post
|
||||
FOR EACH STATEMENT
|
||||
EXECUTE FUNCTION r.update_comment_count_from_post ();
|
||||
|
||||
-- Count subscribers for local communities
|
||||
CREATE FUNCTION r.community_aggregates_from_subscriber ()
|
||||
RETURNS TRIGGER
|
||||
LANGUAGE plpgsql
|
||||
AS $$
|
||||
BEGIN
|
||||
UPDATE
|
||||
community_aggregates AS a
|
||||
SET
|
||||
subscriber = a.subscribers + diff.subscribers
|
||||
FROM (
|
||||
SELECT
|
||||
community_id,
|
||||
sum(count_diff) AS subscribers
|
||||
FROM
|
||||
combine_transition_tables ()
|
||||
WHERE (
|
||||
SELECT
|
||||
local
|
||||
FROM
|
||||
community
|
||||
WHERE
|
||||
community.id = community_id
|
||||
LIMIT 1)
|
||||
GROUP BY
|
||||
community_id) AS diff
|
||||
WHERE
|
||||
a.community_id = diff.community_id;
|
||||
RETURN NULL;
|
||||
END
|
||||
$$;
|
||||
|
||||
CREATE TRIGGER community_aggregates
|
||||
AFTER INSERT OR DELETE ON community_follower REFERENCING OLD TABLE AS old_table NEW TABLE AS new_table
|
||||
FOR EACH STATEMENT
|
||||
EXECUTE FUNCTION r.community_aggregates_from_subscriber ();
|
||||
|
||||
-- These triggers create and update rows in each aggregates table to match its associated table's rows.
|
||||
-- Deleting rows and updating IDs are already handled by `CASCADE` in foreign key constraints.
|
||||
|
|
@ -165,8 +542,15 @@ BEGIN
|
|||
new_post.featured_community,
|
||||
new_post.featured_local
|
||||
FROM
|
||||
new_post
|
||||
INNER JOIN community ON community.id = new_post.community_id
|
||||
new_post,
|
||||
LATERAL (
|
||||
SELECT
|
||||
*
|
||||
FROM
|
||||
community
|
||||
WHERE
|
||||
community.id = new_post.community_id
|
||||
LIMIT 1) AS community,
|
||||
ON CONFLICT
|
||||
DO UPDATE SET
|
||||
featured_community = excluded.featured_community,
|
||||
|
|
@ -204,53 +588,5 @@ CREATE TRIGGER aggregates
|
|||
FOR EACH ROW
|
||||
EXECUTE FUNCTION r.site_aggregates_from_site ();
|
||||
|
||||
-- These triggers update aggregates in response to votes.
|
||||
CREATE PROCEDURE r.aggregates_from_like (target_name text, creator_id_getter text)
|
||||
LANGUAGE plpgsql
|
||||
AS $a$
|
||||
BEGIN
|
||||
EXECUTE format($b$ CREATE FUNCTION r.%1$s_aggregates_from_like ( )
|
||||
RETURNS TRIGGER
|
||||
LANGUAGE plpgsql
|
||||
AS $$
|
||||
BEGIN
|
||||
-- Update aggregates for target, then update aggregates for target's creator
|
||||
WITH target_diff AS ( UPDATE
|
||||
%1$s_aggregates
|
||||
SET
|
||||
(score, upvotes, downvotes, controversy_rank) = (score + diff.upvotes - diff.downvotes, upvotes + diff.upvotes, downvotes + diff.downvotes, controversy_rank ((upvotes + diff.upvotes)::numeric, (downvotes + diff.downvotes)::numeric))
|
||||
FROM (
|
||||
SELECT
|
||||
%1$s_id, sum(count_diff) FILTER (WHERE score = 1) AS upvotes, sum(count_diff) FILTER (WHERE score <> 1) AS downvotes FROM r.combine_transition_tables ()
|
||||
GROUP BY %1$s_id) AS diff
|
||||
WHERE
|
||||
%1$s_aggregates.%1 $ s_id = diff.%1$s_id
|
||||
RETURNING
|
||||
%2$s AS creator_id, diff.upvotes - diff.downvotes AS score)
|
||||
UPDATE
|
||||
person_aggregates
|
||||
SET
|
||||
%1$s_score = %1$s_score + diff.sum FROM (
|
||||
SELECT
|
||||
creator_id, sum(score)
|
||||
FROM target_diff GROUP BY creator_id) AS diff
|
||||
WHERE
|
||||
person_aggregates.person_id = diff.creator_id;
|
||||
RETURN NULL;
|
||||
END $$;
|
||||
CREATE TRIGGER aggregates
|
||||
AFTER INSERT OR DELETE OR UPDATE OF score ON %1$s_like REFERENCING OLD TABLE AS old_table NEW TABLE AS new_table
|
||||
FOR EACH STATEMENT
|
||||
EXECUTE FUNCTION r.%1$s_aggregates_from_like;
|
||||
$b$,
|
||||
target_name,
|
||||
creator_id_getter);
|
||||
END
|
||||
$a$;
|
||||
|
||||
CALL r.aggregates_from_like ('comment', '(SELECT creator_id FROM comment WHERE comment.id = target_aggregates.comment_id LIMIT 1)');
|
||||
|
||||
CALL r.aggregates_from_like ('post', 'target_aggregates.creator_id');
|
||||
|
||||
COMMIT;
|
||||
|
||||
|
|
|
|||
Loading…
Reference in a new issue