106 lines
3.2 KiB
MySQL
106 lines
3.2 KiB
MySQL
|
CREATE TABLE IF NOT EXISTS image(
|
||
|
|
sha1 TEXT NOT NULL, -- SHA-1 hash of file in lowercase hexadecimal
|
||
|
|
width INTEGER NOT NULL, -- cached media width
|
||
|
|
height INTEGER NOT NULL, -- cached media height
|
||
|
|
thumbw INTEGER, -- cached thumbnail width, if known
|
||
|
|
thumbh INTEGER, -- cached thumbnail height, if known
|
||
|
|
dhash INTEGER, -- uint64 perceptual hash as a signed integer
|
||
|
|
CHECK (unhex(sha1) IS NOT NULL AND lower(sha1) = sha1),
|
||
|
|
PRIMARY KEY (sha1)
|
||
|
|
) STRICT;
|
||
|
|
|
||
|
|
CREATE INDEX IF NOT EXISTS image__dhash ON image(dhash);
|
||
|
|
|
||
|
|
--
|
||
|
|
|
||
|
|
CREATE TABLE IF NOT EXISTS node(
|
||
|
|
id INTEGER NOT NULL, -- unique ID
|
||
|
|
parent INTEGER REFERENCES node(id), -- root if NULL
|
||
|
|
name TEXT NOT NULL, -- path component
|
||
|
|
mtime INTEGER, -- files: Unix time in seconds
|
||
|
|
sha1 TEXT REFERENCES image(sha1), -- files: content hash
|
||
|
|
PRIMARY KEY (id)
|
||
|
|
) STRICT;
|
||
|
|
|
||
|
|
CREATE INDEX IF NOT EXISTS node__sha1 ON node(sha1);
|
||
|
|
CREATE UNIQUE INDEX IF NOT EXISTS node__parent_name
|
||
|
|
ON node(IFNULL(parent, 0), name);
|
||
|
|
|
||
|
|
CREATE TRIGGER IF NOT EXISTS node__sha1__check
|
||
|
|
BEFORE UPDATE OF sha1 ON node
|
||
|
|
WHEN OLD.sha1 IS NULL AND NEW.sha1 IS NOT NULL
|
||
|
|
AND EXISTS(SELECT id FROM node WHERE parent = OLD.id)
|
||
|
|
BEGIN
|
||
|
|
SELECT RAISE(ABORT, 'trying to turn a non-empty directory into a file');
|
||
|
|
END;
|
||
|
|
|
||
|
|
/*
|
||
|
|
Automatic garbage collection, not sure if it actually makes any sense.
|
||
|
|
This needs PRAGMA recursive_triggers = 1; to work properly.
|
||
|
|
|
||
|
|
CREATE TRIGGER IF NOT EXISTS node__parent__gc
|
||
|
|
AFTER DELETE ON node FOR EACH ROW
|
||
|
|
BEGIN
|
||
|
|
DELETE FROM node WHERE id = OLD.parent
|
||
|
|
AND id NOT IN (SELECT DISTINCT parent FROM node);
|
||
|
|
END;
|
||
|
|
*/
|
||
|
|
|
||
|
|
--
|
||
|
|
|
||
|
|
CREATE TABLE IF NOT EXISTS orphan(
|
||
|
|
sha1 TEXT NOT NULL REFERENCES image(sha1),
|
||
|
|
path TEXT NOT NULL, -- last occurence within the database hierarchy
|
||
|
|
PRIMARY KEY (sha1)
|
||
|
|
) STRICT;
|
||
|
|
|
||
|
|
-- Renaming/moving a file can result either in a (ref, unref) or a (unref, ref)
|
||
|
|
-- sequence during sync, and I want to get at the same result.
|
||
|
|
CREATE TRIGGER IF NOT EXISTS node__sha1__deorphan_insert
|
||
|
|
AFTER INSERT ON node
|
||
|
|
WHEN NEW.sha1 IS NOT NULL
|
||
|
|
BEGIN
|
||
|
|
DELETE FROM orphan WHERE sha1 = NEW.sha1;
|
||
|
|
END;
|
||
|
|
|
||
|
|
CREATE TRIGGER IF NOT EXISTS node__sha1__deorphan_update
|
||
|
|
AFTER UPDATE OF sha1 ON node
|
||
|
|
WHEN NEW.sha1 IS NOT NULL
|
||
|
|
BEGIN
|
||
|
|
DELETE FROM orphan WHERE sha1 = NEW.sha1;
|
||
|
|
END;
|
||
|
|
|
||
|
|
--
|
||
|
|
|
||
|
|
CREATE TABLE IF NOT EXISTS tag_space(
|
||
|
|
id INTEGER NOT NULL,
|
||
|
|
name TEXT NOT NULL,
|
||
|
|
description TEXT,
|
||
|
|
CHECK (name NOT LIKE '%:%'),
|
||
|
|
PRIMARY KEY (id)
|
||
|
|
) STRICT;
|
||
|
|
|
||
|
|
CREATE UNIQUE INDEX IF NOT EXISTS tag_space__name ON tag_space(name);
|
||
|
|
|
||
|
|
-- To avoid having to deal with NULLs, always create this special tag space.
|
||
|
|
INSERT OR IGNORE INTO tag_space(id, name, description)
|
||
|
|
VALUES(0, '', 'User-defined tags');
|
||
|
|
|
||
|
|
CREATE TABLE IF NOT EXISTS tag(
|
||
|
|
id INTEGER NOT NULL,
|
||
|
|
space INTEGER NOT NULL REFERENCES tag_space(id),
|
||
|
|
name TEXT NOT NULL,
|
||
|
|
PRIMARY KEY (id)
|
||
|
|
) STRICT;
|
||
|
|
|
||
|
|
CREATE UNIQUE INDEX IF NOT EXISTS tag__space_name ON tag(space, name);
|
||
|
|
|
||
|
|
CREATE TABLE IF NOT EXISTS tag_assignment(
|
||
|
|
sha1 TEXT NOT NULL REFERENCES image(sha1),
|
||
|
|
tag INTEGER NOT NULL REFERENCES tag(id),
|
||
|
|
weight REAL NOT NULL, -- 0..1 normalized weight assigned to tag
|
||
|
|
PRIMARY KEY (sha1, tag)
|
||
|
|
) STRICT;
|
||
|
|
|
||
|
|
CREATE INDEX IF NOT EXISTS tag_assignment__tag ON tag_assignment(tag);
|