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# Author: Matt Giuca, Will Grant
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"""Database utilities and content classes.
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Database Classes and Utilities for Storm ORM
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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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'TestCase', 'TestSuite', 'TestSuiteVar'
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'AlreadyEnrolledError'
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def _kwarg_init(self, **kwargs):
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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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"""Hash a password with MD5."""
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return hashlib.md5(password).hexdigest()
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return md5.md5(password).hexdigest()
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def get_by_login(cls, store, login):
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"""Find a user in a store by login name."""
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Get the User from the db associated with a given store and
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return store.find(cls, cls.login == unicode(login)).one()
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def get_svn_url(self, config, req):
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"""Get the subversion repository URL for this user or group."""
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login = req.user.login
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url = urlparse.urlsplit(config['urls']['svn_addr'])
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url = urlparse.urlunsplit(url[:1] + (login+'@'+url[1],) + url[2:])
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path = 'users/%s' % self.login
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return urlparse.urljoin(url, path)
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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, 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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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, 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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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('view_worksheet_marks')
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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 has_worksheet_cutoff_passed(self, user):
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"""Check whether the worksheet cutoff has passed.
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A user is required, in case we support extensions.
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if self.worksheet_cutoff is None:
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return self.worksheet_cutoff < 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.published = worksheet.published
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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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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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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.short_name,
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return "<%s '%s' in %r>" % (type(self).__name__, self.synopsis,
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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):
629
raise DeadlinePassed()
631
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."""
660
# XXX: Need to respect extensions.
661
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)
668
return assessed.submissions
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def can_delete(self):
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"""Can only delete if there are no submissions."""
673
return self.submissions.count() == 0
676
"""Delete the project. Fails if can_delete is False."""
677
if not self.can_delete:
678
raise IntegrityError()
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for assessed in self.assesseds:
681
Store.of(self).remove(self)
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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."""
714
def short_name(self):
715
"""Returns the database "identifier" name of the user or group."""
718
def get_projects(self, offering=None, active_only=True):
719
'''Find projects that the group can submit.
721
This will include projects in the project set which owns this group,
722
unless the project set disallows groups (in which case none will be
725
@param active_only: Whether to only search active offerings.
726
@param offering: An optional offering to restrict the search to.
728
return Store.of(self).find(Project,
729
Project.project_set_id == ProjectSet.id,
730
ProjectSet.id == self.project_set.id,
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ProjectSet.max_students_per_group != None,
732
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,
735
(not active_only) or (Semester.state == u'current'))
737
def get_svn_url(self, config, req):
738
"""Get the subversion repository URL for this user or group."""
739
login = req.user.login
740
url = urlparse.urlsplit(config['urls']['svn_addr'])
741
url = urlparse.urlunsplit(url[:1] + (login+'@'+url[1],) + url[2:])
742
path = 'groups/%s_%s_%s_%s' % (
743
self.project_set.offering.subject.short_name,
744
self.project_set.offering.semester.year,
745
self.project_set.offering.semester.semester,
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return urlparse.urljoin(url, path)
750
def get_permissions(self, user, config):
751
if user.admin or user in self.members:
752
return set(['submit_project'])
756
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class ProjectGroupMembership(Storm):
757
"""A student's membership in a project group."""
759
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__storm_table__ = "group_member"
760
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__storm_primary__ = "user_id", "project_group_id"
770
365
return "<%s %r in %r>" % (type(self).__name__, self.user,
771
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self.project_group)
773
class Assessed(Storm):
774
"""A composite of a user or group combined with a project.
776
Each project submission and extension refers to an Assessed. It is the
777
sole specifier of the repository and project.
780
__storm_table__ = "assessed"
782
id = Int(name="assessedid", primary=True)
783
user_id = Int(name="loginid")
784
user = Reference(user_id, User.id)
785
project_group_id = Int(name="groupid")
786
project_group = Reference(project_group_id, ProjectGroup.id)
788
project_id = Int(name="projectid")
789
project = Reference(project_id, Project.id)
791
extensions = ReferenceSet(id, 'ProjectExtension.assessed_id')
792
submissions = ReferenceSet(
793
id, 'ProjectSubmission.assessed_id', order_by='date_submitted')
796
return "<%s %r in %r>" % (type(self).__name__,
797
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."""
802
return self.project_group is not None
806
return self.project_group or self.user
809
def checkout_location(self):
810
"""Returns the location of the Subversion workspace for this piece of
811
assessment, relative to each group member's home directory."""
812
subjectname = self.project.project_set.offering.subject.short_name
814
checkout_dir_name = self.principal.short_name
816
checkout_dir_name = "mywork"
817
return subjectname + "/" + checkout_dir_name
820
def get(cls, store, principal, project):
821
"""Find or create an Assessed for the given user or group and project.
823
@param principal: The user or group.
824
@param project: The project.
827
if t not in (User, ProjectGroup):
828
raise AssertionError('principal must be User or ProjectGroup')
831
(t is User) or (cls.project_group_id == principal.id),
832
(t is ProjectGroup) or (cls.user_id == principal.id),
833
cls.project_id == project.id).one()
840
a.project_group = principal
847
"""Delete the assessed. Fails if there are any submissions. Deletes
849
if self.submissions.count() > 0:
850
raise IntegrityError()
851
for extension in self.extensions:
853
Store.of(self).remove(self)
855
class ProjectExtension(Storm):
856
"""An extension granted to a user or group on a particular project.
858
The user or group and project are specified by the Assessed.
861
__storm_table__ = "project_extension"
863
id = Int(name="extensionid", primary=True)
864
assessed_id = Int(name="assessedid")
865
assessed = Reference(assessed_id, Assessed.id)
866
deadline = DateTime()
867
approver_id = Int(name="approver")
868
approver = Reference(approver_id, User.id)
872
"""Delete the extension."""
873
Store.of(self).remove(self)
875
class SubmissionError(Exception):
876
"""Denotes a validation error during submission."""
879
class ProjectSubmission(Storm):
880
"""A submission from a user or group repository to a particular project.
882
The content of a submission is a single path and revision inside a
883
repository. The repository is that owned by the submission's user and
884
group, while the path and revision are explicit.
886
The user or group and project are specified by the Assessed.
889
__storm_table__ = "project_submission"
891
id = Int(name="submissionid", primary=True)
892
assessed_id = Int(name="assessedid")
893
assessed = Reference(assessed_id, Assessed.id)
896
submitter_id = Int(name="submitter")
897
submitter = Reference(submitter_id, User.id)
898
date_submitted = DateTime()
900
def get_verify_url(self, user):
901
"""Get the URL for verifying this submission, within the account of
903
# If this is a solo project, then self.path will be prefixed with the
904
# subject name. Remove the first path segment.
905
submitpath = self.path[1:] if self.path[:1] == '/' else self.path
906
if not self.assessed.is_group:
907
if '/' in submitpath:
908
submitpath = submitpath.split('/', 1)[1]
911
return "/files/%s/%s/%s?r=%d" % (user.login,
912
self.assessed.checkout_location, submitpath, self.revision)
915
def test_and_normalise_path(path):
916
"""Test that path is valid, and normalise it. This prevents possible
917
injections using malicious paths.
918
Returns the updated path, if successful.
919
Raises SubmissionError if invalid.
921
# Ensure the path is absolute to prevent being tacked onto working
923
# Prevent '\n' because it will break all sorts of things.
924
# Prevent '[' and ']' because they can be used to inject into the
926
# Normalise to avoid resulting in ".." path segments.
927
if not os.path.isabs(path):
928
raise SubmissionError("Path is not absolute")
929
if any(c in path for c in "\n[]"):
930
raise SubmissionError("Path must not contain '\\n', '[' or ']'")
931
return os.path.normpath(path)
933
368
# WORKSHEETS AND EXERCISES #
935
370
class Exercise(Storm):
936
"""An exercise for students to complete in a worksheet.
938
An exercise may be present in any number of worksheets.
941
__storm_table__ = "exercise"
942
id = Unicode(primary=True, name="identifier")
944
description = Unicode()
945
_description_xhtml_cache = Unicode(name='description_xhtml_cache')
951
worksheet_exercises = ReferenceSet(id,
952
'WorksheetExercise.exercise_id')
371
# Note: Table "problem" is called "Exercise" in the Object layer, since
372
# it's called that everywhere else.
373
__storm_table__ = "problem"
375
id = Int(primary=True, name="problemid")
376
name = Unicode(name="identifier")
954
379
worksheets = ReferenceSet(id,
955
380
'WorksheetExercise.exercise_id',
960
test_suites = ReferenceSet(id,
961
'TestSuite.exercise_id',
964
385
__init__ = _kwarg_init
966
387
def __repr__(self):
967
388
return "<%s %s>" % (type(self).__name__, self.name)
969
def get_permissions(self, user, config):
970
return self.global_permissions(user, config)
973
def global_permissions(user, config):
974
"""Gets the set of permissions this user has over *all* exercises.
975
This is used to determine who may view the exercises list, and create
983
elif u'lecturer' in set((e.role for e in user.active_enrolments)):
986
elif (config['policy']['tutors_can_edit_worksheets']
987
and u'tutor' in set((e.role for e in user.active_enrolments))):
988
# Site-specific policy on the role of tutors
994
def _cache_description_xhtml(self, invalidate=False):
995
# Don't regenerate an existing cache unless forced.
996
if self._description_xhtml_cache is not None and not invalidate:
1000
self._description_xhtml_cache = rst(self.description)
1002
self._description_xhtml_cache = None
1005
def description_xhtml(self):
1006
"""The XHTML exercise description, converted from reStructuredText."""
1007
self._cache_description_xhtml()
1008
return self._description_xhtml_cache
1010
def set_description(self, description):
1011
self.description = description
1012
self._cache_description_xhtml(invalidate=True)
1015
"""Deletes the exercise, providing it has no associated worksheets."""
1016
if (self.worksheet_exercises.count() > 0):
1017
raise IntegrityError()
1018
for suite in self.test_suites:
1020
Store.of(self).remove(self)
391
def get_by_name(cls, store, name):
393
Get the Exercise from the db associated with a given store and name.
394
If the exercise is not in the database, creates it and inserts it
397
ex = store.find(cls, cls.name == unicode(name)).one()
400
ex = Exercise(name=unicode(name))
1022
405
class Worksheet(Storm):
1023
"""A worksheet with exercises for students to complete.
1025
Worksheets are owned by offerings.
1028
406
__storm_table__ = "worksheet"
1030
408
id = Int(primary=True, name="worksheetid")
1031
offering_id = Int(name="offeringid")
1032
identifier = Unicode()
409
# XXX subject is not linked to a Subject object. This is a property of
410
# the database, and will be refactored.
412
name = Unicode(name="identifier")
1034
413
assessable = Bool()
1037
_data_xhtml_cache = Unicode(name='data_xhtml_cache')
1041
attempts = ReferenceSet(id, "ExerciseAttempt.worksheetid")
1042
offering = Reference(offering_id, 'Offering.id')
1044
all_worksheet_exercises = ReferenceSet(id,
416
exercises = ReferenceSet(id,
417
'WorksheetExercise.worksheet_id',
418
'WorksheetExercise.exercise_id',
420
# Use worksheet_exercises to get access to the WorksheetExercise objects
421
# binding worksheets to exercises. This is required to access the
423
worksheet_exercises = ReferenceSet(id,
1045
424
'WorksheetExercise.worksheet_id')
1047
# Use worksheet_exercises to get access to the *active* WorksheetExercise
1048
# objects binding worksheets to exercises. This is required to access the
1052
def worksheet_exercises(self):
1053
return self.all_worksheet_exercises.find(active=True)
1055
426
__init__ = _kwarg_init
1057
428
def __repr__(self):
1058
429
return "<%s %s>" % (type(self).__name__, self.name)
1060
def remove_all_exercises(self):
1061
"""Remove all exercises from this worksheet.
431
# XXX Refactor this - make it an instance method of Subject rather than a
432
# class method of Worksheet. Can't do that now because Subject isn't
433
# linked referentially to the Worksheet.
435
def get_by_name(cls, store, subjectname, worksheetname):
437
Get the Worksheet from the db associated with a given store, subject
438
name and worksheet name.
440
return store.find(cls, cls.subject == unicode(subjectname),
441
cls.name == unicode(worksheetname)).one()
443
def remove_all_exercises(self, store):
445
Remove all exercises from this worksheet.
1063
446
This does not delete the exercises themselves. It just removes them
1064
447
from the worksheet.
1066
store = Store.of(self)
1067
for ws_ex in self.all_worksheet_exercises:
1068
if ws_ex.saves.count() > 0 or ws_ex.attempts.count() > 0:
1069
raise IntegrityError()
1070
449
store.find(WorksheetExercise,
1071
450
WorksheetExercise.worksheet == self).remove()
1073
def get_permissions(self, user, config):
1074
offering_perms = self.offering.get_permissions(user, config)
1078
# Anybody who can view an offering can view a published
1080
if 'view' in offering_perms and self.published:
1083
# Any worksheet editors can both view and edit.
1084
if 'edit_worksheets' in offering_perms:
1090
def _cache_data_xhtml(self, invalidate=False):
1091
# Don't regenerate an existing cache unless forced.
1092
if self._data_xhtml_cache is not None and not invalidate:
1095
if self.format == u'rst':
1096
self._data_xhtml_cache = rst(self.data)
1098
self._data_xhtml_cache = None
1101
def data_xhtml(self):
1102
"""The XHTML of this worksheet, converted from rST if required."""
1103
# Update the rST -> XHTML cache, if required.
1104
self._cache_data_xhtml()
1106
if self.format == u'rst':
1107
return self._data_xhtml_cache
1111
def set_data(self, data):
1113
self._cache_data_xhtml(invalidate=True)
1116
"""Deletes the worksheet, provided it has no attempts on any exercises.
1118
Returns True if delete succeeded, or False if this worksheet has
1119
attempts attached."""
1120
for ws_ex in self.all_worksheet_exercises:
1121
if ws_ex.saves.count() > 0 or ws_ex.attempts.count() > 0:
1122
raise IntegrityError()
1124
self.remove_all_exercises()
1125
Store.of(self).remove(self)
1127
452
class WorksheetExercise(Storm):
1128
"""A link between a worksheet and one of its exercises.
1130
These may be marked optional, in which case the exercise does not count
1131
for marking purposes. The sequence number is used to order the worksheet
1135
__storm_table__ = "worksheet_exercise"
1137
id = Int(primary=True, name="ws_ex_id")
453
__storm_table__ = "worksheet_problem"
454
__storm_primary__ = "worksheet_id", "exercise_id"
1139
456
worksheet_id = Int(name="worksheetid")
1140
457
worksheet = Reference(worksheet_id, Worksheet.id)
1141
exercise_id = Unicode(name="exerciseid")
458
exercise_id = Int(name="problemid")
1142
459
exercise = Reference(exercise_id, Exercise.id)
1143
460
optional = Bool()
1147
saves = ReferenceSet(id, "ExerciseSave.ws_ex_id")
1148
attempts = ReferenceSet(id, "ExerciseAttempt.ws_ex_id")
1150
462
__init__ = _kwarg_init
1152
464
def __repr__(self):
1153
465
return "<%s %s in %s>" % (type(self).__name__, self.exercise.name,
1154
self.worksheet.identifier)
1156
def get_permissions(self, user, config):
1157
return self.worksheet.get_permissions(user, config)
1160
468
class ExerciseSave(Storm):
1161
"""A potential exercise solution submitted by a user for storage.
1163
This is not an actual tested attempt at an exercise, it's just a save of
1164
the editing session.
1167
__storm_table__ = "exercise_save"
1168
__storm_primary__ = "ws_ex_id", "user_id"
1170
ws_ex_id = Int(name="ws_ex_id")
1171
worksheet_exercise = Reference(ws_ex_id, "WorksheetExercise.id")
470
Represents a potential solution to an exercise that a user has submitted
471
to the server for storage.
472
A basic ExerciseSave is just the current saved text for this exercise for
473
this user (doesn't count towards their attempts).
474
ExerciseSave may be extended with additional semantics (such as
477
__storm_table__ = "problem_save"
478
__storm_primary__ = "exercise_id", "user_id", "date"
480
exercise_id = Int(name="problemid")
481
exercise = Reference(exercise_id, Exercise.id)
1173
482
user_id = Int(name="loginid")
1174
483
user = Reference(user_id, User.id)
1175
484
date = DateTime()
1180
489
def __repr__(self):
1181
490
return "<%s %s by %s at %s>" % (type(self).__name__,
1182
self.worksheet_exercise.exercise.name, self.user.login,
1183
self.date.strftime("%c"))
491
self.exercise.name, self.user.login, self.date.strftime("%c"))
1185
493
class ExerciseAttempt(ExerciseSave):
1186
"""An attempt at solving an exercise.
1188
This is a special case of ExerciseSave, used when the user submits a
1189
candidate solution. Like an ExerciseSave, it constitutes exercise solution
1192
In addition, it contains information about the result of the submission:
1194
- complete - True if this submission was successful, rendering this
1195
exercise complete for this user in this worksheet.
1196
- active - True if this submission is "active" (usually true).
1197
Submissions may be de-activated by privileged users for
1198
special reasons, and then they won't count (either as a
1199
penalty or success), but will still be stored.
1202
__storm_table__ = "exercise_attempt"
1203
__storm_primary__ = "ws_ex_id", "user_id", "date"
495
An ExerciseAttempt is a special case of an ExerciseSave. Like an
496
ExerciseSave, it constitutes exercise solution data that the user has
497
submitted to the server for storage.
498
In addition, it contains additional information about the submission.
499
complete - True if this submission was successful, rendering this exercise
500
complete for this user.
501
active - True if this submission is "active" (usually true). Submissions
502
may be de-activated by privileged users for special reasons, and then
503
they won't count (either as a penalty or success), but will still be
506
__storm_table__ = "problem_attempt"
507
__storm_primary__ = "exercise_id", "user_id", "date"
1205
509
# The "text" field is the same but has a different name in the DB table
1206
510
# for some reason.
1207
511
text = Unicode(name="attempt")
1208
512
complete = Bool()
1211
def get_permissions(self, user, config):
1212
return set(['view']) if user is self.user else set()
1214
class TestSuite(Storm):
1215
"""A container to group an exercise's test cases.
1217
The test suite contains some information on how to test. The function to
1218
test, variables to set and stdin data are stored here.
1221
__storm_table__ = "test_suite"
1222
__storm_primary__ = "exercise_id", "suiteid"
1225
exercise_id = Unicode(name="exerciseid")
1226
description = Unicode()
1228
function = Unicode()
1230
exercise = Reference(exercise_id, Exercise.id)
1231
test_cases = ReferenceSet(suiteid, 'TestCase.suiteid', order_by="seq_no")
1232
variables = ReferenceSet(suiteid, 'TestSuiteVar.suiteid', order_by='arg_no')
1235
"""Delete this suite, without asking questions."""
1236
for variable in self.variables:
1238
for test_case in self.test_cases:
1240
Store.of(self).remove(self)
1242
class TestCase(Storm):
1243
"""A container for actual tests (see TestCasePart), inside a test suite.
1245
It is the lowest level shown to students on their pass/fail status."""
1247
__storm_table__ = "test_case"
1248
__storm_primary__ = "testid", "suiteid"
1252
suite = Reference(suiteid, "TestSuite.suiteid")
1255
test_default = Unicode() # Currently unused - only used for file matching.
1258
parts = ReferenceSet(testid, "TestCasePart.testid")
1260
__init__ = _kwarg_init
1263
for part in self.parts:
1265
Store.of(self).remove(self)
1267
class TestSuiteVar(Storm):
1268
"""A variable used by an exercise test suite.
1270
This may represent a function argument or a normal variable.
1273
__storm_table__ = "suite_variable"
1274
__storm_primary__ = "varid"
1278
var_name = Unicode()
1279
var_value = Unicode()
1280
var_type = Unicode()
1283
suite = Reference(suiteid, "TestSuite.suiteid")
1285
__init__ = _kwarg_init
1288
Store.of(self).remove(self)
1290
class TestCasePart(Storm):
1291
"""An actual piece of code to test an exercise solution."""
1293
__storm_table__ = "test_case_part"
1294
__storm_primary__ = "partid"
1299
part_type = Unicode()
1300
test_type = Unicode()
1302
filename = Unicode()
1304
test = Reference(testid, "TestCase.testid")
1306
__init__ = _kwarg_init
1309
Store.of(self).remove(self)
added
removed
ivle/database.py
