mirror of
https://github.com/LemmyNet/lemmy.git
synced 2024-12-05 02:31:21 +00:00
1063 lines
27 KiB
MySQL
1063 lines
27 KiB
MySQL
|
DROP SCHEMA IF EXISTS r CASCADE;
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DROP INDEX idx_site_aggregates_1_row_only;
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CREATE FUNCTION comment_aggregates_comment ()
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RETURNS TRIGGER
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LANGUAGE plpgsql
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AS $$
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BEGIN
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IF (TG_OP = 'INSERT') THEN
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INSERT INTO comment_aggregates (comment_id, published)
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VALUES (NEW.id, NEW.published);
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ELSIF (TG_OP = 'DELETE') THEN
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DELETE FROM comment_aggregates
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WHERE comment_id = OLD.id;
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END IF;
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RETURN NULL;
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END
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$$;
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CREATE FUNCTION comment_aggregates_score ()
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RETURNS TRIGGER
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LANGUAGE plpgsql
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AS $$
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BEGIN
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IF (TG_OP = 'INSERT') THEN
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UPDATE
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comment_aggregates ca
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SET
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score = score + NEW.score,
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upvotes = CASE WHEN NEW.score = 1 THEN
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upvotes + 1
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ELSE
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upvotes
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END,
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downvotes = CASE WHEN NEW.score = - 1 THEN
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downvotes + 1
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ELSE
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downvotes
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END,
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controversy_rank = controversy_rank (ca.upvotes + CASE WHEN NEW.score = 1 THEN
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1
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ELSE
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0
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END::numeric, ca.downvotes + CASE WHEN NEW.score = - 1 THEN
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1
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ELSE
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0
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END::numeric)
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WHERE
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ca.comment_id = NEW.comment_id;
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ELSIF (TG_OP = 'DELETE') THEN
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-- Join to comment because that comment may not exist anymore
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UPDATE
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comment_aggregates ca
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SET
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score = score - OLD.score,
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upvotes = CASE WHEN OLD.score = 1 THEN
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upvotes - 1
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ELSE
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upvotes
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END,
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downvotes = CASE WHEN OLD.score = - 1 THEN
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downvotes - 1
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ELSE
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downvotes
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END,
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controversy_rank = controversy_rank (ca.upvotes + CASE WHEN NEW.score = 1 THEN
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1
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ELSE
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0
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END::numeric, ca.downvotes + CASE WHEN NEW.score = - 1 THEN
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1
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ELSE
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0
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END::numeric)
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FROM
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comment c
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WHERE
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ca.comment_id = c.id
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AND ca.comment_id = OLD.comment_id;
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END IF;
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RETURN NULL;
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END
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$$;
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CREATE FUNCTION community_aggregates_comment_count ()
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RETURNS TRIGGER
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LANGUAGE plpgsql
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AS $$
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BEGIN
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IF (was_restored_or_created (TG_OP, OLD, NEW)) THEN
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UPDATE
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community_aggregates ca
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SET
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comments = comments + 1
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FROM
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post p
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WHERE
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p.id = NEW.post_id
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AND ca.community_id = p.community_id;
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ELSIF (was_removed_or_deleted (TG_OP, OLD, NEW)) THEN
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UPDATE
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community_aggregates ca
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SET
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comments = comments - 1
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FROM
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post p
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WHERE
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p.id = OLD.post_id
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AND ca.community_id = p.community_id;
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END IF;
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RETURN NULL;
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END
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$$;
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CREATE FUNCTION community_aggregates_community ()
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RETURNS TRIGGER
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LANGUAGE plpgsql
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AS $$
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BEGIN
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IF (TG_OP = 'INSERT') THEN
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INSERT INTO community_aggregates (community_id, published)
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VALUES (NEW.id, NEW.published);
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ELSIF (TG_OP = 'DELETE') THEN
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DELETE FROM community_aggregates
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WHERE community_id = OLD.id;
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END IF;
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RETURN NULL;
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END
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$$;
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CREATE FUNCTION community_aggregates_post_count ()
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RETURNS TRIGGER
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LANGUAGE plpgsql
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AS $$
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BEGIN
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IF (was_restored_or_created (TG_OP, OLD, NEW)) THEN
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UPDATE
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community_aggregates
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SET
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posts = posts + 1
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WHERE
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community_id = NEW.community_id;
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IF (TG_OP = 'UPDATE') THEN
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-- Post was restored, so restore comment counts as well
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UPDATE
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community_aggregates ca
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SET
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posts = coalesce(cd.posts, 0),
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comments = coalesce(cd.comments, 0)
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FROM (
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SELECT
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c.id,
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count(DISTINCT p.id) AS posts,
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count(DISTINCT ct.id) AS comments
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FROM
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community c
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LEFT JOIN post p ON c.id = p.community_id
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AND p.deleted = 'f'
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AND p.removed = 'f'
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LEFT JOIN comment ct ON p.id = ct.post_id
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AND ct.deleted = 'f'
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AND ct.removed = 'f'
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WHERE
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c.id = NEW.community_id
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GROUP BY
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c.id) cd
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WHERE
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ca.community_id = NEW.community_id;
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END IF;
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ELSIF (was_removed_or_deleted (TG_OP, OLD, NEW)) THEN
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UPDATE
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community_aggregates
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SET
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posts = posts - 1
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WHERE
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community_id = OLD.community_id;
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-- Update the counts if the post got deleted
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UPDATE
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community_aggregates ca
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SET
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posts = coalesce(cd.posts, 0),
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comments = coalesce(cd.comments, 0)
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FROM (
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SELECT
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c.id,
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count(DISTINCT p.id) AS posts,
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count(DISTINCT ct.id) AS comments
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FROM
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community c
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LEFT JOIN post p ON c.id = p.community_id
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AND p.deleted = 'f'
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AND p.removed = 'f'
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LEFT JOIN comment ct ON p.id = ct.post_id
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AND ct.deleted = 'f'
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AND ct.removed = 'f'
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WHERE
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c.id = OLD.community_id
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GROUP BY
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c.id) cd
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WHERE
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ca.community_id = OLD.community_id;
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END IF;
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RETURN NULL;
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END
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$$;
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CREATE FUNCTION community_aggregates_post_count_insert ()
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RETURNS TRIGGER
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LANGUAGE plpgsql
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AS $$
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BEGIN
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UPDATE
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community_aggregates
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SET
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posts = posts + post_group.count
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FROM (
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SELECT
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community_id,
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count(*)
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FROM
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new_post
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GROUP BY
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community_id) post_group
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WHERE
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community_aggregates.community_id = post_group.community_id;
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RETURN NULL;
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END
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$$;
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CREATE FUNCTION community_aggregates_subscriber_count ()
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RETURNS TRIGGER
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|
LANGUAGE plpgsql
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|
AS $$
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|
BEGIN
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|
IF (TG_OP = 'INSERT') THEN
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UPDATE
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community_aggregates ca
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|
SET
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subscribers = subscribers + community.local::int,
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|
subscribers_local = subscribers_local + person.local::int
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FROM
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community
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LEFT JOIN person ON person.id = NEW.person_id
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|
WHERE
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|
community.id = NEW.community_id
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AND community.id = ca.community_id
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|
AND person.local IS NOT NULL;
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|
ELSIF (TG_OP = 'DELETE') THEN
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|
UPDATE
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community_aggregates ca
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|
SET
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|
subscribers = subscribers - community.local::int,
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|
subscribers_local = subscribers_local - person.local::int
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|
FROM
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|
community
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LEFT JOIN person ON person.id = OLD.person_id
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|
WHERE
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|
community.id = OLD.community_id
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|
AND community.id = ca.community_id
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|
AND person.local IS NOT NULL;
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|
END IF;
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|
RETURN NULL;
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END
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|
$$;
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CREATE FUNCTION delete_follow_before_person ()
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RETURNS TRIGGER
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|
LANGUAGE plpgsql
|
||
|
AS $$
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||
|
BEGIN
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||
|
DELETE FROM community_follower AS c
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WHERE c.person_id = OLD.id;
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|
RETURN OLD;
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|
END;
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|
$$;
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|
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|
CREATE FUNCTION person_aggregates_comment_count ()
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|
RETURNS TRIGGER
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||
|
LANGUAGE plpgsql
|
||
|
AS $$
|
||
|
BEGIN
|
||
|
IF (was_restored_or_created (TG_OP, OLD, NEW)) THEN
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||
|
UPDATE
|
||
|
person_aggregates
|
||
|
SET
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||
|
comment_count = comment_count + 1
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|
WHERE
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|
person_id = NEW.creator_id;
|
||
|
ELSIF (was_removed_or_deleted (TG_OP, OLD, NEW)) THEN
|
||
|
UPDATE
|
||
|
person_aggregates
|
||
|
SET
|
||
|
comment_count = comment_count - 1
|
||
|
WHERE
|
||
|
person_id = OLD.creator_id;
|
||
|
END IF;
|
||
|
RETURN NULL;
|
||
|
END
|
||
|
$$;
|
||
|
|
||
|
CREATE FUNCTION person_aggregates_comment_score ()
|
||
|
RETURNS TRIGGER
|
||
|
LANGUAGE plpgsql
|
||
|
AS $$
|
||
|
BEGIN
|
||
|
IF (TG_OP = 'INSERT') THEN
|
||
|
-- Need to get the post creator, not the voter
|
||
|
UPDATE
|
||
|
person_aggregates ua
|
||
|
SET
|
||
|
comment_score = comment_score + NEW.score
|
||
|
FROM
|
||
|
comment c
|
||
|
WHERE
|
||
|
ua.person_id = c.creator_id
|
||
|
AND c.id = NEW.comment_id;
|
||
|
ELSIF (TG_OP = 'DELETE') THEN
|
||
|
UPDATE
|
||
|
person_aggregates ua
|
||
|
SET
|
||
|
comment_score = comment_score - OLD.score
|
||
|
FROM
|
||
|
comment c
|
||
|
WHERE
|
||
|
ua.person_id = c.creator_id
|
||
|
AND c.id = OLD.comment_id;
|
||
|
END IF;
|
||
|
RETURN NULL;
|
||
|
END
|
||
|
$$;
|
||
|
|
||
|
CREATE FUNCTION person_aggregates_person ()
|
||
|
RETURNS TRIGGER
|
||
|
LANGUAGE plpgsql
|
||
|
AS $$
|
||
|
BEGIN
|
||
|
IF (TG_OP = 'INSERT') THEN
|
||
|
INSERT INTO person_aggregates (person_id)
|
||
|
VALUES (NEW.id);
|
||
|
ELSIF (TG_OP = 'DELETE') THEN
|
||
|
DELETE FROM person_aggregates
|
||
|
WHERE person_id = OLD.id;
|
||
|
END IF;
|
||
|
RETURN NULL;
|
||
|
END
|
||
|
$$;
|
||
|
|
||
|
CREATE FUNCTION person_aggregates_post_count ()
|
||
|
RETURNS TRIGGER
|
||
|
LANGUAGE plpgsql
|
||
|
AS $$
|
||
|
BEGIN
|
||
|
IF (was_restored_or_created (TG_OP, OLD, NEW)) THEN
|
||
|
UPDATE
|
||
|
person_aggregates
|
||
|
SET
|
||
|
post_count = post_count + 1
|
||
|
WHERE
|
||
|
person_id = NEW.creator_id;
|
||
|
ELSIF (was_removed_or_deleted (TG_OP, OLD, NEW)) THEN
|
||
|
UPDATE
|
||
|
person_aggregates
|
||
|
SET
|
||
|
post_count = post_count - 1
|
||
|
WHERE
|
||
|
person_id = OLD.creator_id;
|
||
|
END IF;
|
||
|
RETURN NULL;
|
||
|
END
|
||
|
$$;
|
||
|
|
||
|
CREATE FUNCTION person_aggregates_post_insert ()
|
||
|
RETURNS TRIGGER
|
||
|
LANGUAGE plpgsql
|
||
|
AS $$
|
||
|
BEGIN
|
||
|
UPDATE
|
||
|
person_aggregates
|
||
|
SET
|
||
|
post_count = post_count + post_group.count
|
||
|
FROM (
|
||
|
SELECT
|
||
|
creator_id,
|
||
|
count(*)
|
||
|
FROM
|
||
|
new_post
|
||
|
GROUP BY
|
||
|
creator_id) post_group
|
||
|
WHERE
|
||
|
person_aggregates.person_id = post_group.creator_id;
|
||
|
RETURN NULL;
|
||
|
END
|
||
|
$$;
|
||
|
|
||
|
CREATE FUNCTION person_aggregates_post_score ()
|
||
|
RETURNS TRIGGER
|
||
|
LANGUAGE plpgsql
|
||
|
AS $$
|
||
|
BEGIN
|
||
|
IF (TG_OP = 'INSERT') THEN
|
||
|
-- Need to get the post creator, not the voter
|
||
|
UPDATE
|
||
|
person_aggregates ua
|
||
|
SET
|
||
|
post_score = post_score + NEW.score
|
||
|
FROM
|
||
|
post p
|
||
|
WHERE
|
||
|
ua.person_id = p.creator_id
|
||
|
AND p.id = NEW.post_id;
|
||
|
ELSIF (TG_OP = 'DELETE') THEN
|
||
|
UPDATE
|
||
|
person_aggregates ua
|
||
|
SET
|
||
|
post_score = post_score - OLD.score
|
||
|
FROM
|
||
|
post p
|
||
|
WHERE
|
||
|
ua.person_id = p.creator_id
|
||
|
AND p.id = OLD.post_id;
|
||
|
END IF;
|
||
|
RETURN NULL;
|
||
|
END
|
||
|
$$;
|
||
|
|
||
|
CREATE FUNCTION post_aggregates_comment_count ()
|
||
|
RETURNS TRIGGER
|
||
|
LANGUAGE plpgsql
|
||
|
AS $$
|
||
|
BEGIN
|
||
|
-- Check for post existence - it may not exist anymore
|
||
|
IF TG_OP = 'INSERT' OR EXISTS (
|
||
|
SELECT
|
||
|
1
|
||
|
FROM
|
||
|
post p
|
||
|
WHERE
|
||
|
p.id = OLD.post_id) THEN
|
||
|
IF (was_restored_or_created (TG_OP, OLD, NEW)) THEN
|
||
|
UPDATE
|
||
|
post_aggregates pa
|
||
|
SET
|
||
|
comments = comments + 1
|
||
|
WHERE
|
||
|
pa.post_id = NEW.post_id;
|
||
|
ELSIF (was_removed_or_deleted (TG_OP, OLD, NEW)) THEN
|
||
|
UPDATE
|
||
|
post_aggregates pa
|
||
|
SET
|
||
|
comments = comments - 1
|
||
|
WHERE
|
||
|
pa.post_id = OLD.post_id;
|
||
|
END IF;
|
||
|
END IF;
|
||
|
IF TG_OP = 'INSERT' THEN
|
||
|
UPDATE
|
||
|
post_aggregates pa
|
||
|
SET
|
||
|
newest_comment_time = NEW.published
|
||
|
WHERE
|
||
|
pa.post_id = NEW.post_id;
|
||
|
-- A 2 day necro-bump limit
|
||
|
UPDATE
|
||
|
post_aggregates pa
|
||
|
SET
|
||
|
newest_comment_time_necro = NEW.published
|
||
|
FROM
|
||
|
post p
|
||
|
WHERE
|
||
|
pa.post_id = p.id
|
||
|
AND pa.post_id = NEW.post_id
|
||
|
-- Fix issue with being able to necro-bump your own post
|
||
|
AND NEW.creator_id != p.creator_id
|
||
|
AND pa.published > ('now'::timestamp - '2 days'::interval);
|
||
|
END IF;
|
||
|
RETURN NULL;
|
||
|
END
|
||
|
$$;
|
||
|
|
||
|
CREATE FUNCTION post_aggregates_featured_community ()
|
||
|
RETURNS TRIGGER
|
||
|
LANGUAGE plpgsql
|
||
|
AS $$
|
||
|
BEGIN
|
||
|
UPDATE
|
||
|
post_aggregates pa
|
||
|
SET
|
||
|
featured_community = NEW.featured_community
|
||
|
WHERE
|
||
|
pa.post_id = NEW.id;
|
||
|
RETURN NULL;
|
||
|
END
|
||
|
$$;
|
||
|
|
||
|
CREATE FUNCTION post_aggregates_featured_local ()
|
||
|
RETURNS TRIGGER
|
||
|
LANGUAGE plpgsql
|
||
|
AS $$
|
||
|
BEGIN
|
||
|
UPDATE
|
||
|
post_aggregates pa
|
||
|
SET
|
||
|
featured_local = NEW.featured_local
|
||
|
WHERE
|
||
|
pa.post_id = NEW.id;
|
||
|
RETURN NULL;
|
||
|
END
|
||
|
$$;
|
||
|
|
||
|
CREATE FUNCTION post_aggregates_post ()
|
||
|
RETURNS TRIGGER
|
||
|
LANGUAGE plpgsql
|
||
|
AS $$
|
||
|
BEGIN
|
||
|
INSERT INTO post_aggregates (post_id, published, newest_comment_time, newest_comment_time_necro, community_id, creator_id, instance_id)
|
||
|
SELECT
|
||
|
id,
|
||
|
published,
|
||
|
published,
|
||
|
published,
|
||
|
community_id,
|
||
|
creator_id,
|
||
|
(
|
||
|
SELECT
|
||
|
community.instance_id
|
||
|
FROM
|
||
|
community
|
||
|
WHERE
|
||
|
community.id = community_id
|
||
|
LIMIT 1)
|
||
|
FROM
|
||
|
new_post;
|
||
|
RETURN NULL;
|
||
|
END
|
||
|
$$;
|
||
|
|
||
|
CREATE FUNCTION post_aggregates_score ()
|
||
|
RETURNS TRIGGER
|
||
|
LANGUAGE plpgsql
|
||
|
AS $$
|
||
|
BEGIN
|
||
|
IF (TG_OP = 'INSERT') THEN
|
||
|
UPDATE
|
||
|
post_aggregates pa
|
||
|
SET
|
||
|
score = score + NEW.score,
|
||
|
upvotes = CASE WHEN NEW.score = 1 THEN
|
||
|
upvotes + 1
|
||
|
ELSE
|
||
|
upvotes
|
||
|
END,
|
||
|
downvotes = CASE WHEN NEW.score = - 1 THEN
|
||
|
downvotes + 1
|
||
|
ELSE
|
||
|
downvotes
|
||
|
END,
|
||
|
controversy_rank = controversy_rank (pa.upvotes + CASE WHEN NEW.score = 1 THEN
|
||
|
1
|
||
|
ELSE
|
||
|
0
|
||
|
END::numeric, pa.downvotes + CASE WHEN NEW.score = - 1 THEN
|
||
|
1
|
||
|
ELSE
|
||
|
0
|
||
|
END::numeric)
|
||
|
WHERE
|
||
|
pa.post_id = NEW.post_id;
|
||
|
ELSIF (TG_OP = 'DELETE') THEN
|
||
|
-- Join to post because that post may not exist anymore
|
||
|
UPDATE
|
||
|
post_aggregates pa
|
||
|
SET
|
||
|
score = score - OLD.score,
|
||
|
upvotes = CASE WHEN OLD.score = 1 THEN
|
||
|
upvotes - 1
|
||
|
ELSE
|
||
|
upvotes
|
||
|
END,
|
||
|
downvotes = CASE WHEN OLD.score = - 1 THEN
|
||
|
downvotes - 1
|
||
|
ELSE
|
||
|
downvotes
|
||
|
END,
|
||
|
controversy_rank = controversy_rank (pa.upvotes + CASE WHEN NEW.score = 1 THEN
|
||
|
1
|
||
|
ELSE
|
||
|
0
|
||
|
END::numeric, pa.downvotes + CASE WHEN NEW.score = - 1 THEN
|
||
|
1
|
||
|
ELSE
|
||
|
0
|
||
|
END::numeric)
|
||
|
FROM
|
||
|
post p
|
||
|
WHERE
|
||
|
pa.post_id = p.id
|
||
|
AND pa.post_id = OLD.post_id;
|
||
|
END IF;
|
||
|
RETURN NULL;
|
||
|
END
|
||
|
$$;
|
||
|
|
||
|
CREATE FUNCTION site_aggregates_comment_delete ()
|
||
|
RETURNS TRIGGER
|
||
|
LANGUAGE plpgsql
|
||
|
AS $$
|
||
|
BEGIN
|
||
|
IF (was_removed_or_deleted (TG_OP, OLD, NEW)) THEN
|
||
|
UPDATE
|
||
|
site_aggregates sa
|
||
|
SET
|
||
|
comments = comments - 1
|
||
|
FROM
|
||
|
site s
|
||
|
WHERE
|
||
|
sa.site_id = s.id;
|
||
|
END IF;
|
||
|
RETURN NULL;
|
||
|
END
|
||
|
$$;
|
||
|
|
||
|
CREATE FUNCTION site_aggregates_comment_insert ()
|
||
|
RETURNS TRIGGER
|
||
|
LANGUAGE plpgsql
|
||
|
AS $$
|
||
|
BEGIN
|
||
|
IF (was_restored_or_created (TG_OP, OLD, NEW)) THEN
|
||
|
UPDATE
|
||
|
site_aggregates sa
|
||
|
SET
|
||
|
comments = comments + 1
|
||
|
FROM
|
||
|
site s
|
||
|
WHERE
|
||
|
sa.site_id = s.id;
|
||
|
END IF;
|
||
|
RETURN NULL;
|
||
|
END
|
||
|
$$;
|
||
|
|
||
|
CREATE FUNCTION site_aggregates_community_delete ()
|
||
|
RETURNS TRIGGER
|
||
|
LANGUAGE plpgsql
|
||
|
AS $$
|
||
|
BEGIN
|
||
|
IF (was_removed_or_deleted (TG_OP, OLD, NEW)) THEN
|
||
|
UPDATE
|
||
|
site_aggregates sa
|
||
|
SET
|
||
|
communities = communities - 1
|
||
|
FROM
|
||
|
site s
|
||
|
WHERE
|
||
|
sa.site_id = s.id;
|
||
|
END IF;
|
||
|
RETURN NULL;
|
||
|
END
|
||
|
$$;
|
||
|
|
||
|
CREATE FUNCTION site_aggregates_community_insert ()
|
||
|
RETURNS TRIGGER
|
||
|
LANGUAGE plpgsql
|
||
|
AS $$
|
||
|
BEGIN
|
||
|
IF (was_restored_or_created (TG_OP, OLD, NEW)) THEN
|
||
|
UPDATE
|
||
|
site_aggregates sa
|
||
|
SET
|
||
|
communities = communities + 1
|
||
|
FROM
|
||
|
site s
|
||
|
WHERE
|
||
|
sa.site_id = s.id;
|
||
|
END IF;
|
||
|
RETURN NULL;
|
||
|
END
|
||
|
$$;
|
||
|
|
||
|
CREATE FUNCTION site_aggregates_person_delete ()
|
||
|
RETURNS TRIGGER
|
||
|
LANGUAGE plpgsql
|
||
|
AS $$
|
||
|
BEGIN
|
||
|
-- Join to site since the creator might not be there anymore
|
||
|
UPDATE
|
||
|
site_aggregates sa
|
||
|
SET
|
||
|
users = users - 1
|
||
|
FROM
|
||
|
site s
|
||
|
WHERE
|
||
|
sa.site_id = s.id;
|
||
|
RETURN NULL;
|
||
|
END
|
||
|
$$;
|
||
|
|
||
|
CREATE FUNCTION site_aggregates_person_insert ()
|
||
|
RETURNS TRIGGER
|
||
|
LANGUAGE plpgsql
|
||
|
AS $$
|
||
|
BEGIN
|
||
|
UPDATE
|
||
|
site_aggregates
|
||
|
SET
|
||
|
users = users + 1;
|
||
|
RETURN NULL;
|
||
|
END
|
||
|
$$;
|
||
|
|
||
|
CREATE FUNCTION site_aggregates_post_delete ()
|
||
|
RETURNS TRIGGER
|
||
|
LANGUAGE plpgsql
|
||
|
AS $$
|
||
|
BEGIN
|
||
|
IF (was_removed_or_deleted (TG_OP, OLD, NEW)) THEN
|
||
|
UPDATE
|
||
|
site_aggregates sa
|
||
|
SET
|
||
|
posts = posts - 1
|
||
|
FROM
|
||
|
site s
|
||
|
WHERE
|
||
|
sa.site_id = s.id;
|
||
|
END IF;
|
||
|
RETURN NULL;
|
||
|
END
|
||
|
$$;
|
||
|
|
||
|
CREATE FUNCTION site_aggregates_post_insert ()
|
||
|
RETURNS TRIGGER
|
||
|
LANGUAGE plpgsql
|
||
|
AS $$
|
||
|
BEGIN
|
||
|
UPDATE
|
||
|
site_aggregates sa
|
||
|
SET
|
||
|
posts = posts + (
|
||
|
SELECT
|
||
|
count(*)
|
||
|
FROM
|
||
|
new_post)
|
||
|
FROM
|
||
|
site s
|
||
|
WHERE
|
||
|
sa.site_id = s.id;
|
||
|
RETURN NULL;
|
||
|
END
|
||
|
$$;
|
||
|
|
||
|
CREATE FUNCTION site_aggregates_post_update ()
|
||
|
RETURNS TRIGGER
|
||
|
LANGUAGE plpgsql
|
||
|
AS $$
|
||
|
BEGIN
|
||
|
IF (was_restored_or_created (TG_OP, OLD, NEW)) THEN
|
||
|
UPDATE
|
||
|
site_aggregates sa
|
||
|
SET
|
||
|
posts = posts + 1
|
||
|
FROM
|
||
|
site s
|
||
|
WHERE
|
||
|
sa.site_id = s.id;
|
||
|
END IF;
|
||
|
RETURN NULL;
|
||
|
END
|
||
|
$$;
|
||
|
|
||
|
CREATE FUNCTION site_aggregates_site ()
|
||
|
RETURNS TRIGGER
|
||
|
LANGUAGE plpgsql
|
||
|
AS $$
|
||
|
BEGIN
|
||
|
-- we only ever want to have a single value in site_aggregate because the site_aggregate triggers update all rows in that table.
|
||
|
-- a cleaner check would be to insert it for the local_site but that would break assumptions at least in the tests
|
||
|
IF (TG_OP = 'INSERT') AND NOT EXISTS (
|
||
|
SELECT
|
||
|
*
|
||
|
FROM
|
||
|
site_aggregates
|
||
|
LIMIT 1) THEN
|
||
|
INSERT INTO site_aggregates (site_id)
|
||
|
VALUES (NEW.id);
|
||
|
ELSIF (TG_OP = 'DELETE') THEN
|
||
|
DELETE FROM site_aggregates
|
||
|
WHERE site_id = OLD.id;
|
||
|
END IF;
|
||
|
RETURN NULL;
|
||
|
END
|
||
|
$$;
|
||
|
|
||
|
CREATE FUNCTION was_removed_or_deleted (tg_op text, old record, new record)
|
||
|
RETURNS boolean
|
||
|
LANGUAGE plpgsql
|
||
|
AS $$
|
||
|
BEGIN
|
||
|
IF (TG_OP = 'INSERT') THEN
|
||
|
RETURN FALSE;
|
||
|
END IF;
|
||
|
IF (TG_OP = 'DELETE' AND OLD.deleted = 'f' AND OLD.removed = 'f') THEN
|
||
|
RETURN TRUE;
|
||
|
END IF;
|
||
|
RETURN TG_OP = 'UPDATE'
|
||
|
AND OLD.deleted = 'f'
|
||
|
AND OLD.removed = 'f'
|
||
|
AND (NEW.deleted = 't'
|
||
|
OR NEW.removed = 't');
|
||
|
END
|
||
|
$$;
|
||
|
|
||
|
CREATE FUNCTION was_restored_or_created (tg_op text, old record, new record)
|
||
|
RETURNS boolean
|
||
|
LANGUAGE plpgsql
|
||
|
AS $$
|
||
|
BEGIN
|
||
|
IF (TG_OP = 'DELETE') THEN
|
||
|
RETURN FALSE;
|
||
|
END IF;
|
||
|
IF (TG_OP = 'INSERT') THEN
|
||
|
RETURN TRUE;
|
||
|
END IF;
|
||
|
RETURN TG_OP = 'UPDATE'
|
||
|
AND NEW.deleted = 'f'
|
||
|
AND NEW.removed = 'f'
|
||
|
AND (OLD.deleted = 't'
|
||
|
OR OLD.removed = 't');
|
||
|
END
|
||
|
$$;
|
||
|
|
||
|
CREATE TRIGGER comment_aggregates_comment
|
||
|
AFTER INSERT OR DELETE ON comment
|
||
|
FOR EACH ROW
|
||
|
EXECUTE FUNCTION comment_aggregates_comment ();
|
||
|
|
||
|
CREATE TRIGGER comment_aggregates_score
|
||
|
AFTER INSERT OR DELETE ON comment_like
|
||
|
FOR EACH ROW
|
||
|
EXECUTE FUNCTION comment_aggregates_score ();
|
||
|
|
||
|
CREATE TRIGGER community_aggregates_comment_count
|
||
|
AFTER INSERT OR DELETE OR UPDATE OF removed,
|
||
|
deleted ON comment
|
||
|
FOR EACH ROW
|
||
|
EXECUTE FUNCTION community_aggregates_comment_count ();
|
||
|
|
||
|
CREATE TRIGGER community_aggregates_community
|
||
|
AFTER INSERT OR DELETE ON community
|
||
|
FOR EACH ROW
|
||
|
EXECUTE FUNCTION community_aggregates_community ();
|
||
|
|
||
|
CREATE TRIGGER community_aggregates_post_count
|
||
|
AFTER DELETE OR UPDATE OF removed,
|
||
|
deleted ON post
|
||
|
FOR EACH ROW
|
||
|
EXECUTE FUNCTION community_aggregates_post_count ();
|
||
|
|
||
|
CREATE TRIGGER community_aggregates_post_count_insert
|
||
|
AFTER INSERT ON post REFERENCING NEW TABLE AS new_post
|
||
|
FOR EACH STATEMENT
|
||
|
EXECUTE FUNCTION community_aggregates_post_count_insert ();
|
||
|
|
||
|
CREATE TRIGGER community_aggregates_subscriber_count
|
||
|
AFTER INSERT OR DELETE ON community_follower
|
||
|
FOR EACH ROW
|
||
|
EXECUTE FUNCTION community_aggregates_subscriber_count ();
|
||
|
|
||
|
CREATE TRIGGER delete_follow_before_person
|
||
|
BEFORE DELETE ON person
|
||
|
FOR EACH ROW
|
||
|
EXECUTE FUNCTION delete_follow_before_person ();
|
||
|
|
||
|
CREATE TRIGGER person_aggregates_comment_count
|
||
|
AFTER INSERT OR DELETE OR UPDATE OF removed,
|
||
|
deleted ON comment
|
||
|
FOR EACH ROW
|
||
|
EXECUTE FUNCTION person_aggregates_comment_count ();
|
||
|
|
||
|
CREATE TRIGGER person_aggregates_comment_score
|
||
|
AFTER INSERT OR DELETE ON comment_like
|
||
|
FOR EACH ROW
|
||
|
EXECUTE FUNCTION person_aggregates_comment_score ();
|
||
|
|
||
|
CREATE TRIGGER person_aggregates_person
|
||
|
AFTER INSERT OR DELETE ON person
|
||
|
FOR EACH ROW
|
||
|
EXECUTE FUNCTION person_aggregates_person ();
|
||
|
|
||
|
CREATE TRIGGER person_aggregates_post_count
|
||
|
AFTER DELETE OR UPDATE OF removed,
|
||
|
deleted ON post
|
||
|
FOR EACH ROW
|
||
|
EXECUTE FUNCTION person_aggregates_post_count ();
|
||
|
|
||
|
CREATE TRIGGER person_aggregates_post_insert
|
||
|
AFTER INSERT ON post REFERENCING NEW TABLE AS new_post
|
||
|
FOR EACH STATEMENT
|
||
|
EXECUTE FUNCTION person_aggregates_post_insert ();
|
||
|
|
||
|
CREATE TRIGGER person_aggregates_post_score
|
||
|
AFTER INSERT OR DELETE ON post_like
|
||
|
FOR EACH ROW
|
||
|
EXECUTE FUNCTION person_aggregates_post_score ();
|
||
|
|
||
|
CREATE TRIGGER post_aggregates_comment_count
|
||
|
AFTER INSERT OR DELETE OR UPDATE OF removed,
|
||
|
deleted ON comment
|
||
|
FOR EACH ROW
|
||
|
EXECUTE FUNCTION post_aggregates_comment_count ();
|
||
|
|
||
|
CREATE TRIGGER post_aggregates_featured_community
|
||
|
AFTER UPDATE ON post
|
||
|
FOR EACH ROW
|
||
|
WHEN ((old.featured_community IS DISTINCT FROM new.featured_community))
|
||
|
EXECUTE FUNCTION post_aggregates_featured_community ();
|
||
|
|
||
|
CREATE TRIGGER post_aggregates_featured_local
|
||
|
AFTER UPDATE ON post
|
||
|
FOR EACH ROW
|
||
|
WHEN ((old.featured_local IS DISTINCT FROM new.featured_local))
|
||
|
EXECUTE FUNCTION post_aggregates_featured_local ();
|
||
|
|
||
|
CREATE TRIGGER post_aggregates_post
|
||
|
AFTER INSERT ON post REFERENCING NEW TABLE AS new_post
|
||
|
FOR EACH STATEMENT
|
||
|
EXECUTE FUNCTION post_aggregates_post ();
|
||
|
|
||
|
CREATE TRIGGER post_aggregates_score
|
||
|
AFTER INSERT OR DELETE ON post_like
|
||
|
FOR EACH ROW
|
||
|
EXECUTE FUNCTION post_aggregates_score ();
|
||
|
|
||
|
CREATE TRIGGER site_aggregates_comment_delete
|
||
|
AFTER DELETE OR UPDATE OF removed,
|
||
|
deleted ON comment
|
||
|
FOR EACH ROW
|
||
|
WHEN ((old.local = TRUE))
|
||
|
EXECUTE FUNCTION site_aggregates_comment_delete ();
|
||
|
|
||
|
CREATE TRIGGER site_aggregates_comment_insert
|
||
|
AFTER INSERT OR UPDATE OF removed,
|
||
|
deleted ON comment
|
||
|
FOR EACH ROW
|
||
|
WHEN ((new.local = TRUE))
|
||
|
EXECUTE FUNCTION site_aggregates_comment_insert ();
|
||
|
|
||
|
CREATE TRIGGER site_aggregates_community_insert
|
||
|
AFTER INSERT OR UPDATE OF removed,
|
||
|
deleted ON community
|
||
|
FOR EACH ROW
|
||
|
WHEN ((new.local = TRUE))
|
||
|
EXECUTE FUNCTION site_aggregates_community_insert ();
|
||
|
|
||
|
CREATE TRIGGER site_aggregates_person_delete
|
||
|
AFTER DELETE ON person
|
||
|
FOR EACH ROW
|
||
|
WHEN ((old.local = TRUE))
|
||
|
EXECUTE FUNCTION site_aggregates_person_delete ();
|
||
|
|
||
|
CREATE TRIGGER site_aggregates_person_insert
|
||
|
AFTER INSERT ON person
|
||
|
FOR EACH ROW
|
||
|
WHEN ((new.local = TRUE))
|
||
|
EXECUTE FUNCTION site_aggregates_person_insert ();
|
||
|
|
||
|
CREATE TRIGGER site_aggregates_post_delete
|
||
|
AFTER DELETE OR UPDATE OF removed,
|
||
|
deleted ON post
|
||
|
FOR EACH ROW
|
||
|
WHEN ((old.local = TRUE))
|
||
|
EXECUTE FUNCTION site_aggregates_post_delete ();
|
||
|
|
||
|
CREATE TRIGGER site_aggregates_post_insert
|
||
|
AFTER INSERT ON post REFERENCING NEW TABLE AS new_post
|
||
|
FOR EACH STATEMENT
|
||
|
EXECUTE FUNCTION site_aggregates_post_insert ();
|
||
|
|
||
|
CREATE TRIGGER site_aggregates_post_update
|
||
|
AFTER UPDATE OF removed,
|
||
|
deleted ON post
|
||
|
FOR EACH ROW
|
||
|
WHEN ((new.local = TRUE))
|
||
|
EXECUTE FUNCTION site_aggregates_post_update ();
|
||
|
|
||
|
CREATE TRIGGER site_aggregates_site
|
||
|
AFTER INSERT OR DELETE ON site
|
||
|
FOR EACH ROW
|
||
|
EXECUTE FUNCTION site_aggregates_site ();
|
||
|
|
||
|
-- Rank functions
|
||
|
CREATE FUNCTION controversy_rank (upvotes numeric, downvotes numeric)
|
||
|
RETURNS double precision
|
||
|
LANGUAGE plpgsql
|
||
|
IMMUTABLE
|
||
|
AS $$
|
||
|
BEGIN
|
||
|
IF downvotes <= 0 OR upvotes <= 0 THEN
|
||
|
RETURN 0;
|
||
|
ELSE
|
||
|
RETURN (upvotes + downvotes) * CASE WHEN upvotes > downvotes THEN
|
||
|
downvotes::float / upvotes::float
|
||
|
ELSE
|
||
|
upvotes::float / downvotes::float
|
||
|
END;
|
||
|
END IF;
|
||
|
END;
|
||
|
$$;
|
||
|
|
||
|
CREATE FUNCTION hot_rank (score numeric, published timestamp with time zone)
|
||
|
RETURNS double precision
|
||
|
LANGUAGE plpgsql
|
||
|
IMMUTABLE PARALLEL SAFE
|
||
|
AS $$
|
||
|
DECLARE
|
||
|
hours_diff numeric := EXTRACT(EPOCH FROM (now() - published)) / 3600;
|
||
|
BEGIN
|
||
|
-- 24 * 7 = 168, so after a week, it will default to 0.
|
||
|
IF (hours_diff > 0 AND hours_diff < 168) THEN
|
||
|
-- Use greatest(2,score), so that the hot_rank will be positive and not ignored.
|
||
|
RETURN log(greatest (2, score + 2)) / power((hours_diff + 2), 1.8);
|
||
|
ELSE
|
||
|
-- if the post is from the future, set hot score to 0. otherwise you can game the post to
|
||
|
-- always be on top even with only 1 vote by setting it to the future
|
||
|
RETURN 0.0;
|
||
|
END IF;
|
||
|
END;
|
||
|
$$;
|
||
|
|
||
|
CREATE FUNCTION scaled_rank (score numeric, published timestamp with time zone, users_active_month numeric)
|
||
|
RETURNS double precision
|
||
|
LANGUAGE plpgsql
|
||
|
IMMUTABLE PARALLEL SAFE
|
||
|
AS $$
|
||
|
BEGIN
|
||
|
-- Add 2 to avoid divide by zero errors
|
||
|
-- Default for score = 1, active users = 1, and now, is (0.1728 / log(2 + 1)) = 0.3621
|
||
|
-- There may need to be a scale factor multiplied to users_active_month, to make
|
||
|
-- the log curve less pronounced. This can be tuned in the future.
|
||
|
RETURN (hot_rank (score, published) / log(2 + users_active_month));
|
||
|
END;
|
||
|
$$;
|
||
|
|
||
|
-- Don't defer constraints
|
||
|
ALTER TABLE comment_aggregates
|
||
|
ALTER CONSTRAINT comment_aggregates_comment_id_fkey NOT DEFERRABLE;
|
||
|
|
||
|
ALTER TABLE community_aggregates
|
||
|
ALTER CONSTRAINT community_aggregates_community_id_fkey NOT DEFERRABLE;
|
||
|
|
||
|
ALTER TABLE person_aggregates
|
||
|
ALTER CONSTRAINT person_aggregates_person_id_fkey NOT DEFERRABLE;
|
||
|
|
||
|
ALTER TABLE post_aggregates
|
||
|
ALTER CONSTRAINT post_aggregates_community_id_fkey NOT DEFERRABLE,
|
||
|
ALTER CONSTRAINT post_aggregates_creator_id_fkey NOT DEFERRABLE,
|
||
|
ALTER CONSTRAINT post_aggregates_instance_id_fkey NOT DEFERRABLE,
|
||
|
ALTER CONSTRAINT post_aggregates_post_id_fkey NOT DEFERRABLE;
|
||
|
|
||
|
ALTER TABLE site_aggregates
|
||
|
ALTER CONSTRAINT site_aggregates_site_id_fkey NOT DEFERRABLE;
|
||
|
|