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CREATE SEQUENCE login_unixid_seq MINVALUE 1000 MAXVALUE 29999 START WITH 5000;
CREATE TABLE login (
loginid SERIAL PRIMARY KEY NOT NULL,
login VARCHAR UNIQUE NOT NULL,
passhash VARCHAR,
state VARCHAR NOT NULL CHECK (state in ('no_agreement', 'pending',
'enabled', 'disabled'))
DEFAULT 'no_agreement',
rolenm VARCHAR NOT NULL CHECK (rolenm in ('anyone', 'student',
'marker', 'tutor',
'lecturer', 'admin')),
unixid INT UNIQUE DEFAULT nextval('login_unixid_seq') NOT NULL,
nick VARCHAR NOT NULL,
pass_exp TIMESTAMP,
acct_exp TIMESTAMP,
last_login TIMESTAMP,
svn_pass VARCHAR,
email VARCHAR,
fullname VARCHAR NOT NULL,
studentid VARCHAR, -- may be null
settings VARCHAR
);
-- Subjects
-- --------
CREATE TABLE subject (
subjectid SERIAL PRIMARY KEY NOT NULL,
subj_code VARCHAR UNIQUE NOT NULL,
subj_name VARCHAR NOT NULL,
subj_short_name VARCHAR UNIQUE NOT NULL,
url VARCHAR
);
CREATE TABLE semester (
semesterid SERIAL PRIMARY KEY NOT NULL,
year CHAR(4) NOT NULL,
semester CHAR(1) NOT NULL,
active BOOL NOT NULL,
UNIQUE (year, semester)
);
CREATE OR REPLACE FUNCTION deactivate_semester_enrolments_update()
RETURNS trigger AS '
BEGIN
IF OLD.active = true AND NEW.active = false THEN
UPDATE enrolment SET active=false WHERE offeringid IN (
SELECT offeringid FROM offering WHERE offering.semesterid = NEW.semesterid);
END IF;
RETURN NULL;
END;
' LANGUAGE 'plpgsql';
CREATE TRIGGER deactivate_semester_enrolments
AFTER UPDATE ON semester
FOR EACH ROW EXECUTE PROCEDURE deactivate_semester_enrolments_update();
CREATE TABLE offering (
offeringid SERIAL PRIMARY KEY NOT NULL,
subject INT4 REFERENCES subject (subjectid) NOT NULL,
semesterid INTEGER REFERENCES semester (semesterid) NOT NULL,
groups_student_permissions VARCHAR NOT NULL DEFAULT 'none',
CHECK (groups_student_permissions in ('none', 'invite', 'create')),
UNIQUE (subject, semesterid)
);
-- Projects and groups
-- -------------------
CREATE TABLE project_set (
projectsetid SERIAL PRIMARY KEY NOT NULL,
offeringid INTEGER REFERENCES offering (offeringid) NOT NULL,
max_students_per_group INTEGER NOT NULL DEFAULT 4
);
CREATE TABLE project (
projectid SERIAL PRIMARY KEY NOT NULL,
synopsis VARCHAR,
url VARCHAR,
projectsetid INTEGER REFERENCES project_set (projectsetid) NOT NULL,
deadline TIMESTAMP
);
CREATE TABLE project_group (
groupnm VARCHAR NOT NULL,
groupid SERIAL PRIMARY KEY NOT NULL,
projectsetid INTEGER REFERENCES project_set (projectsetid) NOT NULL,
nick VARCHAR,
createdby INT4 REFERENCES login (loginid) NOT NULL,
epoch TIMESTAMP NOT NULL,
UNIQUE (projectsetid, groupnm)
);
CREATE OR REPLACE FUNCTION check_group_namespacing_insertupdate()
RETURNS trigger AS '
DECLARE
oid INTEGER;
BEGIN
SELECT offeringid INTO oid FROM project_set WHERE project_set.projectsetid = NEW.projectsetid;
PERFORM 1 FROM project_group, project_set WHERE project_set.offeringid = oid AND project_group.projectsetid = project_set.projectsetid AND project_group.groupnm = NEW.groupnm;
IF found THEN
RAISE EXCEPTION ''a project group named % already exists in offering ID %'', NEW.groupnm, oid;
END IF;
RETURN NEW;
END;
' LANGUAGE 'plpgsql';
CREATE TRIGGER check_group_namespacing
BEFORE INSERT OR UPDATE ON project_group
FOR EACH ROW EXECUTE PROCEDURE check_group_namespacing_insertupdate();
CREATE TABLE group_invitation (
loginid INT4 REFERENCES login (loginid) NOT NULL,
groupid INT4 REFERENCES project_group (groupid) NOT NULL,
inviter INT4 REFERENCES login (loginid) NOT NULL,
invited TIMESTAMP NOT NULL,
accepted TIMESTAMP,
UNIQUE (loginid,groupid)
);
CREATE TABLE group_member (
loginid INT4 REFERENCES login (loginid),
groupid INT4 REFERENCES project_group (groupid),
PRIMARY KEY (loginid,groupid)
);
CREATE TABLE enrolment (
loginid INT4 REFERENCES login (loginid),
offeringid INT4 REFERENCES offering (offeringid),
result INT,
special_result VARCHAR,
supp_result INT,
special_supp_result VARCHAR,
notes VARCHAR,
active BOOL NOT NULL DEFAULT true,
PRIMARY KEY (loginid,offeringid)
);
CREATE OR REPLACE FUNCTION confirm_active_semester_insertupdate()
RETURNS trigger AS '
DECLARE
active BOOL;
BEGIN
SELECT semester.active INTO active FROM offering, semester WHERE offeringid=NEW.offeringid AND semester.semesterid = offering.semesterid;
IF NOT active AND NEW.active = true THEN
RAISE EXCEPTION ''cannot have active enrolment for % in offering %, as the semester is inactive'', NEW.loginid, NEW.offeringid;
END IF;
RETURN NEW;
END;
' LANGUAGE 'plpgsql';
CREATE TRIGGER confirm_active_semester
BEFORE INSERT OR UPDATE ON enrolment
FOR EACH ROW EXECUTE PROCEDURE confirm_active_semester_insertupdate();
CREATE TABLE assessed (
assessedid SERIAL PRIMARY KEY NOT NULL,
loginid INT4 REFERENCES login (loginid),
groupid INT4 REFERENCES project_group (groupid),
projectid INT4 REFERENCES project (projectid) NOT NULL,
-- exactly one of loginid and groupid must be non-null
CHECK ((loginid IS NOT NULL AND groupid IS NULL)
OR (loginid IS NULL AND groupid IS NOT NULL))
);
CREATE TABLE project_extension (
assessedid INT4 REFERENCES assessed (assessedid) NOT NULL,
deadline TIMESTAMP NOT NULL,
approver INT4 REFERENCES login (loginid) NOT NULL,
notes VARCHAR
);
CREATE TABLE project_submission (
assessedid INT4 REFERENCES assessed (assessedid) NOT NULL,
path VARCHAR NOT NULL,
revision INT4 NOT NULL
);
CREATE TABLE project_mark (
assessedid INT4 REFERENCES assessed (assessedid) NOT NULL,
componentid INT4,
marker INT4 REFERENCES login (loginid) NOT NULL,
mark INT,
marked TIMESTAMP,
feedback VARCHAR,
notes VARCHAR
);
-- Worksheets
-- ----------
--TODO: Add in a field for the user-friendly identifier
CREATE TABLE problem (
identifier VARCHAR PRIMARY KEY NOT NULL,
name TEXT,
description TEXT,
partial TEXT,
solution TEXT,
include TEXT,
num_rows INT4
);
--TODO: Link worksheets to offerings
CREATE TABLE worksheet (
worksheetid SERIAL PRIMARY KEY NOT NULL,
subject VARCHAR NOT NULL,
offeringid INT4 REFERENCES offering (offeringid) NOT NULL,
identifier VARCHAR NOT NULL,
assessable BOOLEAN,
mtime TIMESTAMP,
UNIQUE (subject, identifier)
);
CREATE TABLE worksheet_problem (
worksheetid INT4 REFERENCES worksheet (worksheetid) NOT NULL,
problemid TEXT REFERENCES problem (identifier) NOT NULL,
optional BOOLEAN,
PRIMARY KEY (worksheetid, problemid)
);
CREATE TABLE problem_attempt (
problemid VARCHAR REFERENCES problem (identifier) NOT NULL,
loginid INT4 REFERENCES login (loginid) NOT NULL,
worksheetid INT4 REFERENCES worksheet (worksheetid) NOT NULL,
date TIMESTAMP NOT NULL,
attempt VARCHAR NOT NULL,
complete BOOLEAN NOT NULL,
active BOOLEAN NOT NULL DEFAULT true,
PRIMARY KEY (problemid,loginid,date)
);
CREATE TABLE problem_save (
problemid INT4 REFERENCES problem (problemid) NOT NULL,
loginid INT4 REFERENCES login (loginid) NOT NULL,
worksheetid INT4 REFERENCES worksheet (worksheetid) NOT NULL,
date TIMESTAMP NOT NULL,
text VARCHAR NOT NULL,
PRIMARY KEY (problemid,loginid)
);
CREATE INDEX problem_attempt_index ON problem_attempt (problemid, loginid);
-- TABLES FOR EXERCISES IN DATABASE --
CREATE TABLE test_suite (
suiteid SERIAL NOT NULL,
problemid TEXT REFERENCES problem (identifier) NOT NULL,
description TEXT,
seq_no INT4,
PRIMARY KEY (problemid, suiteid)
);
CREATE TABLE test_case (
testid SERIAL NOT NULL,
suiteid INT4 REFERENCES test_suite (suiteid) NOT NULL,
passmsg TEXT,
failmsg TEXT,
init TEXT,
code_type TEXT,
code TEXT,
testtype TEXT,
seq_no INT4,
PRIMARY KEY (testid, suiteid)
);
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