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use foreign key constraints

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This commit is contained in:
Vincent Riquer 2013-03-05 13:16:17 +01:00
parent 6d5424a8b4
commit f79464d867
2 changed files with 7 additions and 6 deletions
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1
atom
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@ -267,6 +267,7 @@ openDatabase() {
exec 5>&3
exec 3> >(tee -a $tempdir/debug.log >&5)
fi
echo 'PRAGMA foreign_keys = ON;' >&3
}
closeDatabase() {

12
share/schema.sql
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@ -8,6 +8,7 @@ CREATE TABLE source_files (
last_change INTEGER NOT NULL DEFAULT (strftime('%s','now')),
last_seen INTEGER NOT NULL DEFAULT (strftime('%s','now')),
FOREIGN KEY (mime_type) REFERENCES mime_types(id)
ON DELETE SET NULL
);
CREATE TABLE destinations (
id INTEGER PRIMARY KEY,
@ -19,8 +20,10 @@ CREATE TABLE destination_files (
last_change INTEGER NOT NULL DEFAULT 0,
source_file_id INTEGER,
destination_id INTEGER,
FOREIGN KEY (source_file_id) REFERENCES source_files(id),
FOREIGN KEY (source_file_id) REFERENCES source_files(id)
ON DELETE SET NULL,
FOREIGN KEY (destination_id) REFERENCES destinations(id)
ON DELETE CASCADE
);
CREATE TABLE mime_types (
id INTEGER PRIMARY KEY,
@ -31,8 +34,9 @@ CREATE TABLE mime_actions (
mime_type INTEGER,
destination_id INTEGER,
action INTEGER DEFAULT 1,
FOREIGN KEY (mime_type) REFERENCES mime_types(id)
FOREIGN KEY (mime_type) REFERENCES mime_types(id),
FOREIGN KEY (destination_id) REFERENCES destinations(id)
ON DELETE CASCADE
);
CREATE VIEW mime_type_actions AS
@ -66,9 +70,5 @@ BEGIN
INNER JOIN destinations
WHERE source_files.id=new.id;
END;
CREATE TRIGGER delete_destinations_files AFTER DELETE ON source_files
BEGIN
UPDATE destination_files SET source_file_id=NULL WHERE source_file_id=old.id;
END;
COMMIT;