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Complete new database schema for SQLite

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J. King 2022-05-26 17:33:16 -04:00
parent 5a78fc0492
commit a2115a50fa
1 changed files with 82 additions and 49 deletions
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131
sql/SQLite3/7.sql
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@ -39,9 +39,9 @@ create table arsse_articles_new(
-- metadata for entries in newsfeeds, including user state -- metadata for entries in newsfeeds, including user state
id integer primary key, -- sequence number id integer primary key, -- sequence number
subscription integer not null references arsse_subscriptions(id) on delete cascade on update cascade, -- associated subscription subscription integer not null references arsse_subscriptions(id) on delete cascade on update cascade, -- associated subscription
read boolean not null default 0, -- whether the article has been read read int not null default 0, -- whether the article has been read
starred boolean not null default 0, -- whether the article is starred starred int not null default 0, -- whether the article is starred
hidden boolean not null default 0, -- whether the article should be excluded from selection by default hidden int not null default 0, -- whether the article should be excluded from selection by default
published text, -- time of original publication published text, -- time of original publication
edited text, -- time of last edit by author edited text, -- time of last edit by author
modified text not null default CURRENT_TIMESTAMP, -- time when article was last modified in database pursuant to an authorial edit modified text not null default CURRENT_TIMESTAMP, -- time when article was last modified in database pursuant to an authorial edit
@ -86,64 +86,97 @@ create table arsse_article_contents(
); );
insert into arsse_article_contents insert into arsse_article_contents
select select
i.id, m.id,
a.content a.content
from arsse_articles_map as i from arsse_articles_map as m
left join arsse_articles as a on a.id = i.article; left join arsse_articles as a on a.id = m.article;
-- Create a new table for editions -- Create one edition for each renumbered article, and delete any editions for obsolete articles
create table arsse_editions_temp( insert into arsse_editions(article) select id from arsse_articles_map where id <> article;
id integer primary key autoincrement, delete from arsse_editions where article in (select article from arsse_articles_map where id <> article);
article integer,
modified datetime not null default CURRENT_TIMESTAMP
);
create table arsse_editions_new(
-- IDs for specific editions of articles (required for at least Nextcloud News)
-- every time an article is updated by its author, a new unique edition number is assigned
-- with Nextcloud News this prevents users from marking as read an article which has been
-- updated since the client state was last refreshed
id integer primary key, -- sequence number
article integer not null references arsse_articles(id) on delete cascade, -- the article of which this is an edition
modified datetime not null default CURRENT_TIMESTAMP -- time at which the edition was modified (practically, when it was created)
);
insert into arsse_editions_temp values(1,1);
delete from arsse_editions_temp;
update sqlite_sequence set seq = (select max(id) from arsse_editions) where name = 'arsse_editions_temp';
insert into arsse_editions_temp(article) select id from arsse_articles_map where id = article;
insert into arsse_editions_temp(id, article, modified)
select id, article, modified from arsse_editions where article in (select article from arsse_editions_temp where id <> article);
insert into arsse_editions_new select * from arsse_editions_temp;
-- Create a new enclosures table -- Create enclures for renumbered articles and delete obsolete enclosures
create table arsse_enclosures_new( insert into arsse_enclosures(article, url, type)
-- enclosures (attachments) associated with articles select
article integer not null references arsse_articles(id) on delete cascade, -- article to which the enclosure belongs m.id, url, type
url text, -- URL of the enclosure from arsse_articles_map as m
type text -- content-type (MIME type) of the enclosure join arsse_enclosures as e on m.article = e.article
); where m.id <> m.article;
insert into arsse_enclosures_new delete from arsse_enclosures where article in (select article from arsse_articles_map where id <> article);
select
i.id,
e.url,
e.type
from arsse_articles_map as i
join arsse_enclosures as e on e.article = i.article;
-- Create a new label members table -- Create a new label-associations table which omits the subscription column and populate it with new data
create table arsse_label_members_new( create table arsse_label_members_new(
-- label assignments for articles -- label assignments for articles
label integer not null references arsse_labels(id) on delete cascade, -- label ID associated to an article; label IDs belong to a user label integer not null references arsse_labels(id) on delete cascade, -- label ID associated to an article; label IDs belong to a user
article integer not null references arsse_articles(id) on delete cascade, -- article associated to a label article integer not null references arsse_articles(id) on delete cascade, -- article associated to a label
subscription integer not null references arsse_subscriptions(id) on delete cascade, -- Subscription is included so that records are deleted when a subscription is removed assigned int not null default 1, -- whether the association is current, to support soft deletion
assigned boolean not null default 1, -- whether the association is current, to support soft deletion
modified text not null default CURRENT_TIMESTAMP, -- time at which the association was last made or unmade modified text not null default CURRENT_TIMESTAMP, -- time at which the association was last made or unmade
primary key(label,article) -- only one association of a given label to a given article primary key(label,article) -- only one association of a given label to a given article
) without rowid; ) without rowid;
insert into arsse_label_members_new
select
label, m.id, assigned, l.modified
from arsse_articles_map as m
join arsse_label_members as l using(article);
-- Create a new subscriptions table which combines the feeds table -- Create a new subscriptions table which combines the feeds table
create table arsse_subscriptions_new(
-- Fix up the tag members table -- users' subscriptions to newsfeeds, with settings
id integer primary key, -- sequence number
-- Fix up the icons table owner text not null references arsse_users(id) on delete cascade on update cascade, -- owner of subscription
url text not null, -- URL of feed
feed_title text not null collate nocase, -- feed title
title text collate nocase, -- user-supplied title, which overrides the feed title when set
folder integer references arsse_folders(id) on delete cascade, -- TT-RSS category (nestable); the first-level category (which acts as Nextcloud folder) is joined in when needed
last_mod text, -- time at which the feed last actually changed at the foreign host
etag text not null default '', -- HTTP ETag hash used for cache validation, changes each time the content changes
next_fetch text, -- time at which the feed should next be fetched
added text not null default CURRENT_TIMESTAMP, -- time at which feed was added
source text, -- URL of site to which the feed belongs
updated text, -- time at which the feed was last fetched
err_count integer not null default 0, -- count of successive times update resulted in error since last successful update
err_msg text, -- last error message
size integer not null default 0, -- number of articles in the feed at last fetch
icon integer references arsse_icons(id) on delete set null, -- numeric identifier of any associated icon
modified text not null default CURRENT_TIMESTAMP, -- time at which subscription properties were last modified by the user
order_type int not null default 0, -- Nextcloud sort order
pinned int not null default 0, -- whether feed is pinned (always sorts at top)
unique(owner,url) -- a URL with particular credentials should only appear once
);
insert into arsse_subscriptions_new
select
s.id,
s.owner,
f.url,
coalesce(f.title, f.url),
s.title,
s.folder,
f.modified,
f.etag
f.next_fetch,
f.added,
f.source,
f.updated,
f.err_count,
f.err_msg,
f.size,
f.icon,
s.modified,
s.order_type,
s.pinned
from arsse_subscriptions as s left join arsse_feeds as f on s.feed = f.id;
-- Delete the old tables and rename the new ones -- Delete the old tables and rename the new ones
drop table arsse_label_members;
drop table arsse_subscriptions;
drop table arsse_feeds;
drop table arsse_articles;
drop table arsse_marks;
drop table arsse_articles_map;
alter table arsse_subscriptions_new rename to arsse_subscriptions;
alter table arsse_articles_new rename to arsse_articles;
alter table arsse_label_members_new rename to arsse_label_members;
-- set version marker
pragma user_version = 8;
update arsse_meta set value = '8' where "key" = 'schema_version';