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-- db schema for patch tracker. note that every distinct command (omitting
-- comments) must be preceded and followed by a blank line.
CREATE TABLE packages (
id INTEGER UNIQUE NOT NULL PRIMARY KEY,
name TEXT NOT NULL,
version TEXT NOT NULL,
format TEXT NOT NULL,
loc TEXT NOT NULL,
diffgz_name TEXT DEFAULT NULL,
diffgz_size INTEGER DEFAULT NULL,
diffgz_md5sum TEXT DEFAULT NULL,
debtar_name TEXT DEFAULT NULL,
debtar_size INTEGER DEFAULT NULL,
debtar_md5sum TEXT DEFAULT NULL,
maintainer TEXT NOT NULL,
uploaders TEXT DEFAULT NULL
);
CREATE UNIQUE INDEX idx_pkg_name_version ON packages (name,version);
CREATE TABLE suites (
id INTEGER UNIQUE NOT NULL PRIMARY KEY,
name TEXT UNIQUE NOT NULL,
UNIQUE (name) ON CONFLICT IGNORE
);
CREATE TABLE components (
id INTEGER UNIQUE NOT NULL PRIMARY KEY,
name TEXT UNIQUE NOT NULL,
UNIQUE (name) ON CONFLICT IGNORE
);
CREATE TABLE package_rel_map (
package_id INTEGER NOT NULL
CONSTRAINT fk_package_id REFERENCES packages(id),
suite_id INTEGER NOT NULL
CONSTRAINT fk_suite_id REFERENCES suites(id) ON DELETE CASCADE,
component_id INTEGER NOT NULL
CONSTRAINT fk_component_id REFERENCES components(id),
marked INTEGER NOT NULL DEFAULT 1,
UNIQUE (package_id, suite_id, component_id) ON CONFLICT REPLACE
);
-- sqlite doesn't actually implement FK constraints, therefore we
-- help out a little and do it ourselves via triggers
-- before insert on the package relation mapping, catch invalid references
CREATE TRIGGER fki_package_rel_map
BEFORE INSERT ON [package_rel_map]
FOR EACH ROW BEGIN
SELECT RAISE(ROLLBACK, 'INSERT FK violation: package_rel_map/suites.id')
WHERE (SELECT id FROM suites WHERE id = NEW.suite_id) IS NULL;
SELECT RAISE(ROLLBACK, 'INSERT FK violation: package_rel_map/packages.id')
WHERE (SELECT id FROM packages WHERE id = NEW.package_id) IS NULL;
SELECT RAISE(ROLLBACK, 'INSERT FK violation: package_rel_map/components.id')
WHERE (SELECT id FROM components WHERE id =NEW.component_id) IS NULL;
END;
-- the same but for updates
CREATE TRIGGER fku_package_rel_map
BEFORE UPDATE ON [package_rel_map]
FOR EACH ROW BEGIN
SELECT RAISE(ROLLBACK, 'UPDATE FK violation: package_rel_map/packages.id')
WHERE (SELECT id FROM packages WHERE id = NEW.package_id) IS NULL;
SELECT RAISE(ROLLBACK, 'UPDATE FK violation: package_rel_map/components.id')
WHERE (SELECT id FROM components WHERE id=NEW.component_id) IS NULL;
SELECT RAISE(ROLLBACK, 'UPDATE FK violation: package_rel_map/suites.id')
WHERE (SELECT id FROM suites WHERE id = NEW.suite_id) IS NULL;
END;
-- when a package/component/suite id is deleted, clean up any references
-- that would otherwise be orphaned
CREATE TRIGGER fkdc_package_rel_map_suite_id_suites_id
BEFORE DELETE ON suites
FOR EACH ROW BEGIN
DELETE FROM package_rel_map WHERE package_rel_map.suite_id = OLD.id;
END;
CREATE TRIGGER fkdc_package_rel_map_component_id_components_id
BEFORE DELETE ON components
FOR EACH ROW BEGIN
DELETE FROM package_rel_map WHERE package_rel_map.component_id = OLD.id;
END;
CREATE TRIGGER fkdc_package_rel_map_package_id_packages_id
BEFORE DELETE ON packages
FOR EACH ROW BEGIN
DELETE FROM package_rel_map WHERE package_rel_map.package_id = OLD.id;
END;
-- when a package relation mapping is deleted or updated, delete the package
-- record for the old relation if no other references to that package exist
CREATE TRIGGER fkdc_packages_id_package_rel_map_package_id
BEFORE DELETE ON package_rel_map
FOR EACH ROW BEGIN
DELETE FROM packages WHERE packages.id = OLD.package_id
AND (SELECT package_id FROM package_rel_map
WHERE package_id = OLD.package_id AND rowid != OLD.rowid) IS NULL;
END;
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