fradrive/models/users
2019-09-12 17:18:17 +02:00

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-- The files in /models determine the database scheme.
-- The organisational split into several files has no operational effects.
-- White-space and case matters: Each SQL table is named in 1st column of this file
-- Indendent lower-case lines describe the SQL-columns of the table with name, type and options
-- Nullable columns have "Maybe" written after their type
-- Option "default=xyz" is only used for database migrations due to changes in the SQL-schema, also see Model.Migration
-- Indendent upper-case lines usually impose Uniqueness constraints for rows by some columns.
-- Each table will also have an column storing a unique numeric row key, unless there is a row Primary columnname
--
User json -- Each Uni2work user has a corresponding row in this table; created upon first login.
surname UserSurname -- Display user names always through 'nameWidget displayName surname'
displayName UserDisplayName
displayEmail UserEmail
email UserEmail -- Case-insensitive eMail address
ident UserIdent -- Case-insensitive user-identifier
authentication AuthenticationMode -- 'AuthLDAP' or ('AuthPWHash'+password-hash)
lastAuthentication UTCTime Maybe -- last login date
created UTCTime default=now()
lastLdapSynchronisation UTCTime Maybe
tokensIssuedAfter UTCTime Maybe -- do not accept bearer tokens issued before this time (accept all tokens if null)
matrikelnummer UserMatriculation Maybe -- optional immatriculation-string; usually a number, but not always (e.g. lecturers, pupils, guests,...)
firstName Text -- For export in tables, pre-split firstName from displayName
title Text Maybe -- For upcoming name customisation
maxFavourites Int default=12 -- max number of rows with this userId in table "CourseFavourite"; for convenience links; user-defined
theme Theme default='Default' -- Color-theme of the frontend; user-defined
dateTimeFormat DateTimeFormat "default='%a %d %b %Y %R'" -- preferred Date+Time display format for user; user-defined
dateFormat DateTimeFormat "default='%d.%m.%Y'" -- preferred Date-only display format for user; user-defined
timeFormat DateTimeFormat "default='%R'" -- preferred Time-only display format for user; user-defined
downloadFiles Bool default=false -- Should files be opened in browser or downloaded? (users often oblivious that their browser has a setting for this)
mailLanguages MailLanguages "default='[]'::jsonb" -- Preferred language for eMail; i18n not yet implemented; user-defined
notificationSettings NotificationSettings -- Bit-array for which events email notifications are requested by user; user-defined
warningDays NominalDiffTime default=1209600 -- timedistance to pending deadlines for homepage infos
UniqueAuthentication ident -- Column 'ident' can be used as a row-key in this table
UniqueEmail email -- Column 'email' can be used as a row-key in this table
deriving Show Eq Ord Generic -- Haskell-specific settings for runtime-value representing a row in memory
UserFunction -- Administratively assigned functions (lecturer, admin, evaluation, ...)
user UserId
school SchoolId
function SchoolFunction
UniqueUserFunction user school function
UserExamOffice
user UserId
field StudyTermsId
UniqueUserExamOffice user field
UserSchool -- Managed by users themselves, encodes "schools of interest"
user UserId
school SchoolId
isOptOut Bool -- true if this a marker, that the user manually deleted this entry; it should not be recreated automatically
UniqueUserSchool user school
StudyFeatures -- multiple entries possible for students pursuing several degrees at once, usually created upon LDAP login
user UserId
degree StudyDegreeId -- Abschluss, i.e. Master, Bachelor, etc.
field StudyTermsId -- Fach, i.e. Informatics, Philosophy, etc.
type StudyFieldType -- Major or minor, i.e. Haupt-/Nebenfach
semester Int
updated UTCTime default=now() -- last update from LDAP
valid Bool default=true -- marked as active in LDAP (students may switch, but LDAP never forgets)
UniqueStudyFeatures user degree field type semester
-- UniqueUserSubject ubuser degree field -- There exists a counterexample
StudyDegree -- Studienabschluss
key Int -- LMU-internal key
shorthand Text Maybe -- admin determined shorthand
name Text Maybe -- description given by LDAP
Primary key -- column key is used as actual DB row key
-- newtype Key StudyDegree = StudyDegreeKey' { unStudyDegreeKey :: Int }
deriving Show
StudyTerms -- Studiengang
key Int -- LMU-internal key
shorthand Text Maybe -- admin determined shorthand
name Text Maybe -- description given by LDAP
Primary key -- column key is used as actual DB row key
-- newtype Key StudyTerms = StudyTermsKey' { unStudyTermsKey :: Int }
deriving Show
StudyTermCandidate -- No one at LMU is willing and able to tell us the meaning of the keys for StudyDegrees and StudyTerms.
-- Each LDAP login provides an unordered set of keys and an unordered set of plain text description with an unknown 1-1 correspondence.
-- This table helps us to infer which key belongs to which plain text by recording possible combinations at login.
-- If a login provides n keys and n plan texts, then n^2 rows with the same incidence are created, storing all combinations
incidence TermCandidateIncidence -- random id, generated once per login to associate matching pairs
key Int -- a possible key for the studyTermName
name Text -- studyTermName as plain text from LDAP
deriving Show Eq Ord