~azzar1/unity/add-show-desktop-key

BEGIN;

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

-- ----------

CREATE TABLE problem (

    identifier  TEXT PRIMARY KEY,

    name        TEXT,

    description TEXT,

    partial     TEXT,

    solution    TEXT,

    include     TEXT,

    num_rows    INT4

);

CREATE TABLE worksheet (

    worksheetid SERIAL PRIMARY KEY,

    offeringid  INT4 REFERENCES offering (offeringid) NOT NULL,

    identifier  VARCHAR NOT NULL,

    assessable  BOOLEAN,

    mtime       TIMESTAMP,

    UNIQUE (offeringid, 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   TEXT 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,worksheetid,date)

);

CREATE TABLE problem_save (

    problemid   TEXT REFERENCES problem (identifier) NOT NULL,

    loginid     INT4 REFERENCES login (loginid) NOT NULL,

    worksheetid INT4 REFERENCES worksheet (worksheetid) NOT NULL,

    date        TIMESTAMP NOT NULL,

    text        TEXT NOT NULL,

    PRIMARY KEY (problemid,loginid, worksheetid)

);

CREATE TABLE test_suite (

    suiteid     SERIAL PRIMARY KEY,

    problemid   TEXT REFERENCES problem (identifier) NOT NULL,

    description TEXT,

    seq_no      INT4,

    function    TEXT,

    stdin       TEXT

);

CREATE TABLE test_case (

    testid          SERIAL PRIMARY KEY,

    suiteid         INT4 REFERENCES test_suite (suiteid) NOT NULL,

    passmsg         TEXT,

    failmsg         TEXT,

    test_default    TEXT,

    seq_no          INT4

);

CREATE TABLE suite_variables (

    varid       SERIAL PRIMARY KEY,

    suiteid     INT4 REFERENCES test_suite (suiteid) NOT NULL,

    var_name    TEXT,

    var_value   TEXT,

    var_type    TEXT NOT NULL,

    arg_no      INT4

);

CREATE TABLE test_case_parts (

    partid          SERIAL PRIMARY KEY,

    testid          INT4 REFERENCES test_case (testid) NOT NULL,

    part_type       TEXT NOT NULL,

    test_type       TEXT,

    data            TEXT,

    filename        TEXT

);

COMMIT;