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# Author: Matt Giuca, Will Grant
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Database Classes and Utilities for Storm ORM
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"""Database utilities and content classes.
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This module provides all of the classes which map to database tables.
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It also provides miscellaneous utility functions for database interaction.
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from storm.locals import create_database, Store, Int, Unicode, DateTime, \
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Reference, ReferenceSet, Bool, Storm, Desc
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from storm.expr import Select, Max
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from storm.exceptions import NotOneError, IntegrityError
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from ivle.worksheet.rst import rst
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__all__ = ['get_store',
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'Subject', 'Semester', 'Offering', 'Enrolment',
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'ProjectSet', 'Project', 'ProjectGroup', 'ProjectGroupMembership',
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'Assessed', 'ProjectSubmission', 'ProjectExtension',
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'Exercise', 'Worksheet', 'WorksheetExercise',
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'ExerciseSave', 'ExerciseAttempt',
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'AlreadyEnrolledError', 'TestCase', 'TestSuite', 'TestSuiteVar'
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'TestCase', 'TestSuite', 'TestSuiteVar'
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def _kwarg_init(self, **kwargs):
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% (self.__class__.__name__, k))
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setattr(self, k, v)
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def get_conn_string():
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Returns the Storm connection string, generated from the conf file.
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return "postgres://%s:%s@%s:%d/%s" % (ivle.conf.db_user,
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ivle.conf.db_password, ivle.conf.db_host, ivle.conf.db_port,
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Open a database connection and transaction. Return a storm.store.Store
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instance connected to the configured IVLE database.
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return Store(create_database(get_conn_string()))
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def get_conn_string(config):
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"""Create a Storm connection string to the IVLE database
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@param config: The IVLE configuration.
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if config['database']['username']:
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clusterstr += config['database']['username']
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if config['database']['password']:
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clusterstr += ':' + config['database']['password']
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host = config['database']['host'] or 'localhost'
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port = config['database']['port'] or 5432
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clusterstr += '%s:%d' % (host, port)
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return "postgres://%s/%s" % (clusterstr, config['database']['name'])
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def get_store(config):
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"""Create a Storm store connected to the IVLE database.
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@param config: The IVLE configuration.
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return Store(create_database(get_conn_string(config)))
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Represents an IVLE user.
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"""An IVLE user account."""
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__storm_table__ = "login"
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id = Int(primary=True, name="loginid")
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passhash = Unicode()
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pass_exp = DateTime()
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'''A sanely ordered list of all of the user's enrolments.'''
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return self._get_enrolments(False)
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def get_projects(self, offering=None, active_only=True):
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"""Find projects that the user can submit.
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This will include projects for offerings in which the user is
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enrolled, as long as the project is not in a project set which has
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groups (ie. if maximum number of group members is 0).
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@param active_only: Whether to only search active offerings.
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@param offering: An optional offering to restrict the search to.
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return Store.of(self).find(Project,
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Project.project_set_id == ProjectSet.id,
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ProjectSet.max_students_per_group == None,
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ProjectSet.offering_id == Offering.id,
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(offering is None) or (Offering.id == offering.id),
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Semester.id == Offering.semester_id,
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(not active_only) or (Semester.state == u'current'),
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Enrolment.offering_id == Offering.id,
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Enrolment.user_id == self.id,
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Enrolment.active == True)
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def hash_password(password):
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return md5.md5(password).hexdigest()
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"""Hash a password with MD5."""
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return hashlib.md5(password).hexdigest()
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def get_by_login(cls, store, login):
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Get the User from the db associated with a given store and
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"""Find a user in a store by login name."""
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return store.find(cls, cls.login == unicode(login)).one()
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def get_permissions(self, user):
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if user and user.rolenm == 'admin' or user is self:
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return set(['view', 'edit'])
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def get_permissions(self, user, config):
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"""Determine privileges held by a user over this object.
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If the user requesting privileges is this user or an admin,
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they may do everything. Otherwise they may do nothing.
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if user and user.admin or user is self:
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return set(['view_public', 'view', 'edit', 'submit_project'])
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return set(['view_public'])
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# SUBJECTS AND ENROLMENTS #
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class Subject(Storm):
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"""A subject (or course) which is run in some semesters."""
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__storm_table__ = "subject"
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id = Int(primary=True, name="subjectid")
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code = Unicode(name="subj_code")
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name = Unicode(name="subj_name")
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short_name = Unicode(name="subj_short_name")
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offerings = ReferenceSet(id, 'Offering.subject_id')
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def __repr__(self):
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return "<%s '%s'>" % (type(self).__name__, self.short_name)
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def get_permissions(self, user):
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def get_permissions(self, user, config):
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"""Determine privileges held by a user over this object.
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If the user requesting privileges is an admin, they may edit.
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Otherwise they may only read.
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if user is not None:
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perms.add('view')
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if user.rolenm == 'admin':
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perms.add('edit')
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def active_offerings(self):
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"""Find active offerings for this subject.
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Return a sequence of currently active offerings for this subject
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(offerings whose semester.state is "current"). There should be 0 or 1
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elements in this sequence, but it's possible there are more.
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return self.offerings.find(Offering.semester_id == Semester.id,
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Semester.state == u'current')
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def offering_for_semester(self, year, semester):
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"""Get the offering for the given year/semester, or None.
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@param year: A string representation of the year.
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@param semester: A string representation of the semester.
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return self.offerings.find(Offering.semester_id == Semester.id,
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Semester.year == unicode(year),
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Semester.semester == unicode(semester)).one()
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class Semester(Storm):
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"""A semester in which subjects can be run."""
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__storm_table__ = "semester"
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id = Int(primary=True, name="semesterid")
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semester = Unicode()
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offerings = ReferenceSet(id, 'Offering.semester_id')
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enrolments = ReferenceSet(id,
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'Offering.semester_id',
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'Enrolment.offering_id')
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__init__ = _kwarg_init
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return "<%s %r in %r>" % (type(self).__name__, self.subject,
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def enrol(self, user):
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'''Enrol a user in this offering.'''
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# We'll get a horrible database constraint violation error if we try
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# to add a second enrolment.
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if Store.of(self).find(Enrolment,
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Enrolment.user_id == user.id,
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Enrolment.offering_id == self.id).count() == 1:
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raise AlreadyEnrolledError()
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e = Enrolment(user=user, offering=self, active=True)
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self.enrolments.add(e)
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def get_permissions(self, user):
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def enrol(self, user, role=u'student'):
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"""Enrol a user in this offering.
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Enrolments handle both the staff and student cases. The role controls
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the privileges granted by this enrolment.
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enrolment = Store.of(self).find(Enrolment,
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Enrolment.user_id == user.id,
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Enrolment.offering_id == self.id).one()
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if enrolment is None:
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enrolment = Enrolment(user=user, offering=self)
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self.enrolments.add(enrolment)
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enrolment.active = True
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enrolment.role = role
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def unenrol(self, user):
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'''Unenrol a user from this offering.'''
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enrolment = Store.of(self).find(Enrolment,
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Enrolment.user_id == user.id,
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Enrolment.offering_id == self.id).one()
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Store.of(enrolment).remove(enrolment)
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def get_permissions(self, user, config):
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if user is not None:
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if user.rolenm == 'admin':
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enrolment = self.get_enrolment(user)
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if enrolment or user.admin:
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if enrolment and enrolment.role == u'tutor':
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perms.add('view_project_submissions')
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# Site-specific policy on the role of tutors
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if config['policy']['tutors_can_enrol_students']:
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perms.add('enrol_student')
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if config['policy']['tutors_can_edit_worksheets']:
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perms.add('edit_worksheets')
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if config['policy']['tutors_can_admin_groups']:
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perms.add('admin_groups')
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if (enrolment and enrolment.role in (u'lecturer')) or user.admin:
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perms.add('view_project_submissions')
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perms.add('admin_groups')
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perms.add('edit_worksheets')
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perms.add('edit') # Can edit projects & details
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perms.add('enrol') # Can see enrolment screen at all
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perms.add('enrol_student') # Can enrol students
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perms.add('enrol_tutor') # Can enrol tutors
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perms.add('enrol_lecturer') # Can enrol lecturers
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def get_enrolment(self, user):
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"""Find the user's enrolment in this offering."""
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enrolment = self.enrolments.find(user=user).one()
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def get_members_by_role(self, role):
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return Store.of(self).find(User,
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Enrolment.user_id == User.id,
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Enrolment.offering_id == self.id,
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Enrolment.role == role
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).order_by(User.login)
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return self.get_members_by_role(u'student')
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def get_open_projects_for_user(self, user):
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"""Find all projects currently open to submissions by a user."""
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# XXX: Respect extensions.
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return self.projects.find(Project.deadline > datetime.datetime.now())
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def clone_worksheets(self, source):
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"""Clone all worksheets from the specified source to this offering."""
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import ivle.worksheet.utils
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for worksheet in source.worksheets:
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newws.seq_no = worksheet.seq_no
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newws.identifier = worksheet.identifier
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newws.name = worksheet.name
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newws.assessable = worksheet.assessable
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newws.data = worksheet.data
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newws.format = worksheet.format
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newws.offering = self
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Store.of(self).add(newws)
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ivle.worksheet.utils.update_exerciselist(newws)
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class Enrolment(Storm):
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"""An enrolment of a user in an offering.
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This represents the roles of both staff and students.
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__storm_table__ = "enrolment"
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__storm_primary__ = "user_id", "offering_id"
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return "<%s %d in %r>" % (type(self).__name__, self.id,
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def get_permissions(self, user, config):
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return self.offering.get_permissions(user, config)
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def get_groups_for_user(self, user):
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"""List all groups in this offering of which the user is a member."""
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return Store.of(self).find(
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ProjectGroupMembership.user_id == user.id,
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ProjectGroupMembership.project_group_id == ProjectGroup.id,
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ProjectGroup.project_set_id == self.id)
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def get_submission_principal(self, user):
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"""Get the principal on behalf of which the user can submit.
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If this is a solo project set, the given user is returned. If
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the user is a member of exactly one group, all the group is
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returned. Otherwise, None is returned.
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groups = self.get_groups_for_user(user)
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if groups.count() == 1:
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return self.max_students_per_group is not None
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"""Get the entities (groups or users) assigned to submit this project.
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This will be a Storm ResultSet.
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#If its a solo project, return everyone in offering
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return self.project_groups
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return self.offering.students
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class DeadlinePassed(Exception):
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"""An exception indicating that a project cannot be submitted because the
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deadline has passed."""
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return "The project deadline has passed"
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class Project(Storm):
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"""A student project for which submissions can be made."""
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__storm_table__ = "project"
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id = Int(name="projectid", primary=True)
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short_name = Unicode()
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synopsis = Unicode()
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project_set_id = Int(name="projectsetid")
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project_set = Reference(project_set_id, ProjectSet.id)
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deadline = DateTime()
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assesseds = ReferenceSet(id, 'Assessed.project_id')
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submissions = ReferenceSet(id,
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'Assessed.project_id',
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'ProjectSubmission.assessed_id')
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__init__ = _kwarg_init
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def __repr__(self):
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return "<%s '%s' in %r>" % (type(self).__name__, self.synopsis,
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return "<%s '%s' in %r>" % (type(self).__name__, self.short_name,
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self.project_set.offering)
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def can_submit(self, principal, user):
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return (self in principal.get_projects() and
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not self.has_deadline_passed(user))
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def submit(self, principal, path, revision, who):
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"""Submit a Subversion path and revision to a project.
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@param principal: The owner of the Subversion repository, and the
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entity on behalf of whom the submission is being made
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@param path: A path within that repository to submit.
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@param revision: The revision of that path to submit.
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@param who: The user who is actually making the submission.
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if not self.can_submit(principal, who):
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raise DeadlinePassed()
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a = Assessed.get(Store.of(self), principal, self)
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ps = ProjectSubmission()
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# Raise SubmissionError if the path is illegal
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ps.path = ProjectSubmission.test_and_normalise_path(path)
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ps.revision = revision
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ps.date_submitted = datetime.datetime.now()
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def get_permissions(self, user, config):
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return self.project_set.offering.get_permissions(user, config)
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def latest_submissions(self):
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"""Return the latest submission for each Assessed."""
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return Store.of(self).find(ProjectSubmission,
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Assessed.project_id == self.id,
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ProjectSubmission.assessed_id == Assessed.id,
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ProjectSubmission.date_submitted == Select(
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Max(ProjectSubmission.date_submitted),
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ProjectSubmission.assessed_id == Assessed.id,
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tables=ProjectSubmission
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def has_deadline_passed(self, user):
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"""Check whether the deadline has passed."""
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# XXX: Need to respect extensions.
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return self.deadline < datetime.datetime.now()
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def get_submissions_for_principal(self, principal):
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"""Fetch a ResultSet of all submissions by a particular principal."""
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assessed = Assessed.get(Store.of(self), principal, self)
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return assessed.submissions
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class ProjectGroup(Storm):
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"""A group of students working together on a project."""
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__storm_table__ = "project_group"
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id = Int(name="groupid", primary=True)
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return "<%s %s in %r>" % (type(self).__name__, self.name,
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self.project_set.offering)
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def display_name(self):
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"""Returns the "nice name" of the user or group."""
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def short_name(self):
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"""Returns the database "identifier" name of the user or group."""
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def get_projects(self, offering=None, active_only=True):
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'''Find projects that the group can submit.
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This will include projects in the project set which owns this group,
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unless the project set disallows groups (in which case none will be
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@param active_only: Whether to only search active offerings.
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@param offering: An optional offering to restrict the search to.
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return Store.of(self).find(Project,
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Project.project_set_id == ProjectSet.id,
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ProjectSet.id == self.project_set.id,
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ProjectSet.max_students_per_group != None,
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ProjectSet.offering_id == Offering.id,
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(offering is None) or (Offering.id == offering.id),
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Semester.id == Offering.semester_id,
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(not active_only) or (Semester.state == u'current'))
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def get_permissions(self, user, config):
706
if user.admin or user in self.members:
707
return set(['submit_project'])
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class ProjectGroupMembership(Storm):
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"""A student's membership in a project group."""
382
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__storm_table__ = "group_member"
383
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__storm_primary__ = "user_id", "project_group_id"
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return "<%s %r in %r>" % (type(self).__name__, self.user,
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self.project_group)
728
class Assessed(Storm):
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"""A composite of a user or group combined with a project.
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Each project submission and extension refers to an Assessed. It is the
732
sole specifier of the repository and project.
735
__storm_table__ = "assessed"
737
id = Int(name="assessedid", primary=True)
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user_id = Int(name="loginid")
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user = Reference(user_id, User.id)
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project_group_id = Int(name="groupid")
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project_group = Reference(project_group_id, ProjectGroup.id)
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project_id = Int(name="projectid")
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project = Reference(project_id, Project.id)
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extensions = ReferenceSet(id, 'ProjectExtension.assessed_id')
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submissions = ReferenceSet(
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id, 'ProjectSubmission.assessed_id', order_by='date_submitted')
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return "<%s %r in %r>" % (type(self).__name__,
752
self.user or self.project_group, self.project)
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"""True if the Assessed is a group, False if it is a user."""
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return self.project_group is not None
761
return self.project_group or self.user
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def checkout_location(self):
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"""Returns the location of the Subversion workspace for this piece of
766
assessment, relative to each group member's home directory."""
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subjectname = self.project.project_set.offering.subject.short_name
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checkout_dir_name = self.principal.short_name
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checkout_dir_name = "mywork"
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return subjectname + "/" + checkout_dir_name
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def get(cls, store, principal, project):
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"""Find or create an Assessed for the given user or group and project.
778
@param principal: The user or group.
779
@param project: The project.
782
if t not in (User, ProjectGroup):
783
raise AssertionError('principal must be User or ProjectGroup')
786
(t is User) or (cls.project_group_id == principal.id),
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(t is ProjectGroup) or (cls.user_id == principal.id),
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cls.project_id == project.id).one()
795
a.project_group = principal
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class ProjectExtension(Storm):
803
"""An extension granted to a user or group on a particular project.
805
The user or group and project are specified by the Assessed.
808
__storm_table__ = "project_extension"
810
id = Int(name="extensionid", primary=True)
811
assessed_id = Int(name="assessedid")
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assessed = Reference(assessed_id, Assessed.id)
813
deadline = DateTime()
814
approver_id = Int(name="approver")
815
approver = Reference(approver_id, User.id)
818
class SubmissionError(Exception):
819
"""Denotes a validation error during submission."""
822
class ProjectSubmission(Storm):
823
"""A submission from a user or group repository to a particular project.
825
The content of a submission is a single path and revision inside a
826
repository. The repository is that owned by the submission's user and
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group, while the path and revision are explicit.
829
The user or group and project are specified by the Assessed.
832
__storm_table__ = "project_submission"
834
id = Int(name="submissionid", primary=True)
835
assessed_id = Int(name="assessedid")
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assessed = Reference(assessed_id, Assessed.id)
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submitter_id = Int(name="submitter")
840
submitter = Reference(submitter_id, User.id)
841
date_submitted = DateTime()
843
def get_verify_url(self, user):
844
"""Get the URL for verifying this submission, within the account of
846
# If this is a solo project, then self.path will be prefixed with the
847
# subject name. Remove the first path segment.
848
submitpath = self.path[1:] if self.path[:1] == '/' else self.path
849
if not self.assessed.is_group:
850
if '/' in submitpath:
851
submitpath = submitpath.split('/', 1)[1]
854
return "/files/%s/%s/%s?r=%d" % (user.login,
855
self.assessed.checkout_location, submitpath, self.revision)
858
def test_and_normalise_path(path):
859
"""Test that path is valid, and normalise it. This prevents possible
860
injections using malicious paths.
861
Returns the updated path, if successful.
862
Raises SubmissionError if invalid.
864
# Ensure the path is absolute to prevent being tacked onto working
866
# Prevent '\n' because it will break all sorts of things.
867
# Prevent '[' and ']' because they can be used to inject into the
869
# Normalise to avoid resulting in ".." path segments.
870
if not os.path.isabs(path):
871
raise SubmissionError("Path is not absolute")
872
if any(c in path for c in "\n[]"):
873
raise SubmissionError("Path must not contain '\\n', '[' or ']'")
874
return os.path.normpath(path)
396
876
# WORKSHEETS AND EXERCISES #
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878
class Exercise(Storm):
399
# Note: Table "problem" is called "Exercise" in the Object layer, since
400
# it's called that everywhere else.
401
__storm_table__ = "problem"
402
#TODO: Add in a field for the user-friendly identifier
879
"""An exercise for students to complete in a worksheet.
881
An exercise may be present in any number of worksheets.
884
__storm_table__ = "exercise"
403
885
id = Unicode(primary=True, name="identifier")
405
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description = Unicode()
408
890
include = Unicode()
893
worksheet_exercises = ReferenceSet(id,
894
'WorksheetExercise.exercise_id')
411
896
worksheets = ReferenceSet(id,
412
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'WorksheetExercise.exercise_id',
413
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'WorksheetExercise.worksheet_id',
417
test_suites = ReferenceSet(id, 'TestSuite.exercise_id')
902
test_suites = ReferenceSet(id,
903
'TestSuite.exercise_id',
419
906
__init__ = _kwarg_init
421
908
def __repr__(self):
422
909
return "<%s %s>" % (type(self).__name__, self.name)
911
def get_permissions(self, user, config):
912
return self.global_permissions(user, config)
915
def global_permissions(user, config):
916
"""Gets the set of permissions this user has over *all* exercises.
917
This is used to determine who may view the exercises list, and create
925
elif u'lecturer' in set((e.role for e in user.active_enrolments)):
928
elif (config['policy']['tutors_can_edit_worksheets']
929
and u'tutor' in set((e.role for e in user.active_enrolments))):
930
# Site-specific policy on the role of tutors
936
def get_description(self):
937
"""Return the description interpreted as reStructuredText."""
938
return rst(self.description)
941
"""Deletes the exercise, providing it has no associated worksheets."""
942
if (self.worksheet_exercises.count() > 0):
943
raise IntegrityError()
944
for suite in self.test_suites:
946
Store.of(self).remove(self)
425
948
class Worksheet(Storm):
949
"""A worksheet with exercises for students to complete.
951
Worksheets are owned by offerings.
426
954
__storm_table__ = "worksheet"
428
956
id = Int(primary=True, name="worksheetid")
429
# XXX subject is not linked to a Subject object. This is a property of
430
# the database, and will be refactored.
431
957
offering_id = Int(name="offeringid")
432
name = Unicode(name="identifier")
958
identifier = Unicode()
433
960
assessable = Bool()
436
965
attempts = ReferenceSet(id, "ExerciseAttempt.worksheetid")
437
966
offering = Reference(offering_id, 'Offering.id')
439
exercises = ReferenceSet(id,
440
'WorksheetExercise.worksheet_id',
441
'WorksheetExercise.exercise_id',
443
# Use worksheet_exercises to get access to the WorksheetExercise objects
444
# binding worksheets to exercises. This is required to access the
968
all_worksheet_exercises = ReferenceSet(id,
969
'WorksheetExercise.worksheet_id')
971
# Use worksheet_exercises to get access to the *active* WorksheetExercise
972
# objects binding worksheets to exercises. This is required to access the
445
973
# "optional" field.
446
worksheet_exercises = ReferenceSet(id,
447
'WorksheetExercise.worksheet_id')
976
def worksheet_exercises(self):
977
return self.all_worksheet_exercises.find(active=True)
450
979
__init__ = _kwarg_init
452
981
def __repr__(self):
453
982
return "<%s %s>" % (type(self).__name__, self.name)
455
# XXX Refactor this - make it an instance method of Subject rather than a
456
# class method of Worksheet. Can't do that now because Subject isn't
457
# linked referentially to the Worksheet.
459
def get_by_name(cls, store, subjectname, worksheetname):
461
Get the Worksheet from the db associated with a given store, subject
462
name and worksheet name.
464
return store.find(cls, cls.subject == unicode(subjectname),
465
cls.name == unicode(worksheetname)).one()
984
def remove_all_exercises(self):
985
"""Remove all exercises from this worksheet.
467
def remove_all_exercises(self, store):
469
Remove all exercises from this worksheet.
470
987
This does not delete the exercises themselves. It just removes them
471
988
from the worksheet.
990
store = Store.of(self)
991
for ws_ex in self.all_worksheet_exercises:
992
if ws_ex.saves.count() > 0 or ws_ex.attempts.count() > 0:
993
raise IntegrityError()
473
994
store.find(WorksheetExercise,
474
995
WorksheetExercise.worksheet == self).remove()
476
def get_permissions(self, user):
477
return self.offering.get_permissions(user)
997
def get_permissions(self, user, config):
998
# Almost the same permissions as for the offering itself
999
perms = self.offering.get_permissions(user, config)
1000
# However, "edit" permission is derived from the "edit_worksheets"
1001
# permission of the offering
1002
if 'edit_worksheets' in perms:
1005
perms.discard('edit')
1009
"""Returns the xml of this worksheet, converts from rst if required."""
1010
if self.format == u'rst':
1011
ws_xml = rst(self.data)
1017
"""Deletes the worksheet, provided it has no attempts on any exercises.
1019
Returns True if delete succeeded, or False if this worksheet has
1020
attempts attached."""
1021
for ws_ex in self.all_worksheet_exercises:
1022
if ws_ex.saves.count() > 0 or ws_ex.attempts.count() > 0:
1023
raise IntegrityError()
1025
self.remove_all_exercises()
1026
Store.of(self).remove(self)
479
1028
class WorksheetExercise(Storm):
480
__storm_table__ = "worksheet_problem"
481
__storm_primary__ = "worksheet_id", "exercise_id"
1029
"""A link between a worksheet and one of its exercises.
1031
These may be marked optional, in which case the exercise does not count
1032
for marking purposes. The sequence number is used to order the worksheet
1036
__storm_table__ = "worksheet_exercise"
1038
id = Int(primary=True, name="ws_ex_id")
483
1040
worksheet_id = Int(name="worksheetid")
484
1041
worksheet = Reference(worksheet_id, Worksheet.id)
485
exercise_id = Unicode(name="problemid")
1042
exercise_id = Unicode(name="exerciseid")
486
1043
exercise = Reference(exercise_id, Exercise.id)
487
1044
optional = Bool()
1048
saves = ReferenceSet(id, "ExerciseSave.ws_ex_id")
1049
attempts = ReferenceSet(id, "ExerciseAttempt.ws_ex_id")
489
1051
__init__ = _kwarg_init
491
1053
def __repr__(self):
492
1054
return "<%s %s in %s>" % (type(self).__name__, self.exercise.name,
1055
self.worksheet.identifier)
1057
def get_permissions(self, user, config):
1058
return self.worksheet.get_permissions(user, config)
495
1061
class ExerciseSave(Storm):
497
Represents a potential solution to an exercise that a user has submitted
498
to the server for storage.
499
A basic ExerciseSave is just the current saved text for this exercise for
500
this user (doesn't count towards their attempts).
501
ExerciseSave may be extended with additional semantics (such as
504
__storm_table__ = "problem_save"
505
__storm_primary__ = "exercise_id", "user_id", "date"
507
exercise_id = Unicode(name="problemid")
508
exercise = Reference(exercise_id, Exercise.id)
1062
"""A potential exercise solution submitted by a user for storage.
1064
This is not an actual tested attempt at an exercise, it's just a save of
1065
the editing session.
1068
__storm_table__ = "exercise_save"
1069
__storm_primary__ = "ws_ex_id", "user_id"
1071
ws_ex_id = Int(name="ws_ex_id")
1072
worksheet_exercise = Reference(ws_ex_id, "WorksheetExercise.id")
509
1074
user_id = Int(name="loginid")
510
1075
user = Reference(user_id, User.id)
511
1076
date = DateTime()
512
1077
text = Unicode()
514
worksheet = Reference(worksheetid, Worksheet.id)
516
1079
__init__ = _kwarg_init
520
1083
self.exercise.name, self.user.login, self.date.strftime("%c"))
522
1085
class ExerciseAttempt(ExerciseSave):
524
An ExerciseAttempt is a special case of an ExerciseSave. Like an
525
ExerciseSave, it constitutes exercise solution data that the user has
526
submitted to the server for storage.
527
In addition, it contains additional information about the submission.
528
complete - True if this submission was successful, rendering this exercise
529
complete for this user.
530
active - True if this submission is "active" (usually true). Submissions
531
may be de-activated by privileged users for special reasons, and then
532
they won't count (either as a penalty or success), but will still be
535
__storm_table__ = "problem_attempt"
536
__storm_primary__ = "exercise_id", "user_id", "date"
1086
"""An attempt at solving an exercise.
1088
This is a special case of ExerciseSave, used when the user submits a
1089
candidate solution. Like an ExerciseSave, it constitutes exercise solution
1092
In addition, it contains information about the result of the submission:
1094
- complete - True if this submission was successful, rendering this
1095
exercise complete for this user in this worksheet.
1096
- active - True if this submission is "active" (usually true).
1097
Submissions may be de-activated by privileged users for
1098
special reasons, and then they won't count (either as a
1099
penalty or success), but will still be stored.
1102
__storm_table__ = "exercise_attempt"
1103
__storm_primary__ = "ws_ex_id", "user_id", "date"
538
1105
# The "text" field is the same but has a different name in the DB table
539
1106
# for some reason.
540
1107
text = Unicode(name="attempt")
541
1108
complete = Bool()
544
def get_permissions(self, user):
1111
def get_permissions(self, user, config):
545
1112
return set(['view']) if user is self.user else set()
547
1114
class TestSuite(Storm):
548
"""A Testsuite acts as a container for the test cases of an exercise."""
1115
"""A container to group an exercise's test cases.
1117
The test suite contains some information on how to test. The function to
1118
test, variables to set and stdin data are stored here.
549
1121
__storm_table__ = "test_suite"
550
1122
__storm_primary__ = "exercise_id", "suiteid"
553
exercise_id = Unicode(name="problemid")
1125
exercise_id = Unicode(name="exerciseid")
554
1126
description = Unicode()
556
1128
function = Unicode()
557
1129
stdin = Unicode()
558
1130
exercise = Reference(exercise_id, Exercise.id)
559
test_cases = ReferenceSet(suiteid, 'TestCase.suiteid')
560
variables = ReferenceSet(suiteid, 'TestSuiteVar.suiteid')
1131
test_cases = ReferenceSet(suiteid, 'TestCase.suiteid', order_by="seq_no")
1132
variables = ReferenceSet(suiteid, 'TestSuiteVar.suiteid', order_by='arg_no')
1135
"""Delete this suite, without asking questions."""
1136
for variable in self.variables:
1138
for test_case in self.test_cases:
1140
Store.of(self).remove(self)
562
1142
class TestCase(Storm):
563
"""A TestCase is a member of a TestSuite.
565
It contains the data necessary to check if an exercise is correct"""
1143
"""A container for actual tests (see TestCasePart), inside a test suite.
1145
It is the lowest level shown to students on their pass/fail status."""
566
1147
__storm_table__ = "test_case"
567
1148
__storm_primary__ = "testid", "suiteid"
571
1152
suite = Reference(suiteid, "TestSuite.suiteid")
572
1153
passmsg = Unicode()
573
1154
failmsg = Unicode()
574
test_default = Unicode()
1155
test_default = Unicode() # Currently unused - only used for file matching.
577
1158
parts = ReferenceSet(testid, "TestCasePart.testid")
579
1160
__init__ = _kwarg_init
1163
for part in self.parts:
1165
Store.of(self).remove(self)
581
1167
class TestSuiteVar(Storm):
582
"""A container for the arguments of a Test Suite"""
583
__storm_table__ = "suite_variables"
1168
"""A variable used by an exercise test suite.
1170
This may represent a function argument or a normal variable.
1173
__storm_table__ = "suite_variable"
584
1174
__storm_primary__ = "varid"
588
1178
var_name = Unicode()
589
1179
var_value = Unicode()
590
1180
var_type = Unicode()
593
1183
suite = Reference(suiteid, "TestSuite.suiteid")
595
1185
__init__ = _kwarg_init
1188
Store.of(self).remove(self)
597
1190
class TestCasePart(Storm):
598
"""A container for the test elements of a Test Case"""
599
__storm_table__ = "test_case_parts"
1191
"""An actual piece of code to test an exercise solution."""
1193
__storm_table__ = "test_case_part"
600
1194
__storm_primary__ = "partid"
605
1199
part_type = Unicode()
606
1200
test_type = Unicode()
607
1201
data = Unicode()
608
1202
filename = Unicode()
610
1204
test = Reference(testid, "TestCase.testid")
612
1206
__init__ = _kwarg_init
1209
Store.of(self).remove(self)
added
removed
ivle/database.py
