lix/src/libstore/schema.sql
Eelco Dolstra 8cffec8485 Remove failed build caching
This feature was implemented for Hydra, but Hydra no longer uses it.
2016-04-08 18:19:04 +02:00

42 lines
1.5 KiB
SQL

create table if not exists ValidPaths (
id integer primary key autoincrement not null,
path text unique not null,
hash text not null,
registrationTime integer not null,
deriver text,
narSize integer,
ultimate integer, -- null implies "false"
sigs text -- space-separated
);
create table if not exists Refs (
referrer integer not null,
reference integer not null,
primary key (referrer, reference),
foreign key (referrer) references ValidPaths(id) on delete cascade,
foreign key (reference) references ValidPaths(id) on delete restrict
);
create index if not exists IndexReferrer on Refs(referrer);
create index if not exists IndexReference on Refs(reference);
-- Paths can refer to themselves, causing a tuple (N, N) in the Refs
-- table. This causes a deletion of the corresponding row in
-- ValidPaths to cause a foreign key constraint violation (due to `on
-- delete restrict' on the `reference' column). Therefore, explicitly
-- get rid of self-references.
create trigger if not exists DeleteSelfRefs before delete on ValidPaths
begin
delete from Refs where referrer = old.id and reference = old.id;
end;
create table if not exists DerivationOutputs (
drv integer not null,
id text not null, -- symbolic output id, usually "out"
path text not null,
primary key (drv, id),
foreign key (drv) references ValidPaths(id) on delete cascade
);
create index if not exists IndexDerivationOutputs on DerivationOutputs(path);