Trying to generate school timetable with lab hours. Kindly help me to solve this error! Thanks in advance.
Here is my code!
@planning_solution
class TimeTable:
timeslot_list: list[Timeslot]
timeslot_list1: list[Timeslot]
room_list: list[Room]
lesson_list: list[Lesson]
lab_list: list[Lab]
score: HardSoftScore
def __init__(self, timeslot_list, timeslot_list1, room_list, lesson_list,lab_list,
score=None):
self.timeslot_list = timeslot_list
self.timeslot_list1 = timeslot_list1
self.room_list = room_list
self.lesson_list = lesson_list
self.lab_list = lab_list
self.score = score
@problem_fact_collection_property(Timeslot)
@value_range_provider("timeslotRangeLS")
def get_timeslot_list(self):
return self.timeslot_list
@problem_fact_collection_property(Timeslot)
@value_range_provider("timeslotRangeLB")
def get_timeslot_list1(self):
return self.timeslot_list1
@problem_fact_collection_property(Room)
@value_range_provider("roomRange")
def get_room_list(self):
return self.room_list
@planning_entity_collection_property(Lesson)
def get_lesson_list(self):
return self.lesson_list
@planning_entity_collection_property(Lab)
def get_lab_list(self):
return self.Lab_list
@planning_score(HardSoftScore)
def get_score(self):
return self.score
def set_score(self, score):
self.score = score
def __str__(self):
return (
f"TimeTable("
f"timeslot_list={format_list(self.timeslot_list)},\n"
f"timeslot_list1={format_list(self.timeslot_list1)},\n"
f"room_list={format_list(self.room_list)},\n"
f"lesson_list={format_list(self.lesson_list)},\n"
f"lab_list={format_list(self.lab_list)},\n"
f"score={str(self.score.toString()) if self.score is not None else 'None'}"
f")"
)
Trying to get the 2 timeslots one for lesson(1 hour) and one for lab(2 hour).Here is my @planning_solution.
I defined 2 @planning_entity for both lab & lesson with @value_range_provider.
@planning_entity
class Lab(Base):
id: int
subject: str
teacher: str
student_group: str
timeslot1: Timeslot
room: Room
def __init__(self, id, subject, teacher, student_group, timeslot1 = None, room=None):
self.id = id
self.subject = subject
self.teacher = teacher
self.student_group = student_group
self.timeslot1 = timeslot1
self.room = room
@planning_variable(Base, value_range_provider_refs=['roomRange', 'timeslotRangeLB'],
graph_type=PlanningVariableGraphType.CHAINED)
@planning_id
def get_id(self):
return self.id
@planning_variable(Timeslot, ["timeslotRangeLB"])
def get_timeslot1(self):
return self.timeslot1
@value_range_provider(range_id = "timeslotRangeLB", value_range_type = Timeslot)
def get_possible_timeslot_list1(self):
return self.subject.teacher.student_group.room_list
def set_timeslot1(self, new_timeslot):
self.timeslot1 = new_timeslot
@planning_variable(Room, ["roomRange"])
def get_room(self):
return self.room
def set_room(self, new_room):
self.room = new_room
def __str__(self):
return (
f"Lab("
f"id={self.id}, "
f"timeslot1={self.timeslot1}, "
f"room={self.room}, "
f"teacher={self.teacher}, "
f"subject={self.subject}, "
f"student_group={self.student_group}"
f")"
)
@planning_entity
class Lesson(Base):
id: int
subject: str
teacher: str
student_group: str
timeslot: Timeslot
room: Room
def __init__(self, id, subject, teacher, student_group, timeslot=None, room=None):
self.id = id
self.subject = subject
self.teacher = teacher
self.student_group = student_group
self.timeslot = timeslot
self.room = room
@planning_variable(Base, value_range_provider_refs=['timeslotRangeLS', 'roomRange'],
graph_type=PlanningVariableGraphType.CHAINED)
@planning_id
def get_id(self):
return self.id
@planning_variable(Timeslot, ["timeslotRangeLS"])
def get_timeslot(self):
return self.timeslot
@value_range_provider(range_id = "timeslotRangeLS", value_range_type = Timeslot)
def get_possible_timeslot_list(self):
return self.subject.teacher.student_group.room_list
# return self.course.teacher.department.room_list
def set_timeslot(self, new_timeslot):
self.timeslot = new_timeslot
@planning_variable(Room, ["roomRange"])
def get_room(self):
return self.room
def set_room(self, new_room):
self.room = new_room
def __str__(self):
return (
f"Lesson("
f"id={self.id}, "
f"timeslot={self.timeslot}, "
f"room={self.room}, "
f"teacher={self.teacher}, "
f"subject={self.subject}, "
f"student_group={self.student_group}"
f")"
)
The issue is you defined @value_range_provider(range_id = "timeslotRangeLS") on both your @planning_solution and your @planning_entity. You can only have one; if you want the value range to apply to every entity, do it on the @planning_solution. If you want each planning entity to have it own value range that only applies to it, do it on the @planning_entity. If you want to combine a value range that contains common values for all entities, and a value range that is per entity, use a @value_range_provider on the @planning_solution, and a @value_range_provider on the entity, but give them different ids (ex: @value_range_provider(range_id = "timeslotRangeLSSolution") and @value_range_provider(range_id = "timeslotRangeLSEntity"), and in the @planning_variable, use both range ids in the list (ex: @planning_variable(Room, ["timeslotRangeLSSolution", "timeslotRangeLSEntity"])