def get_valid_time_tables(self,all_subjects,clashes):
sem_subjects = {1:[],2:[]}
self.open()
types = {}
for subject in all_subjects:
types[subject] = []
self.cursor.execute('select type,semester from '+self.name+' where name=? group by type;',[subject])
types_result = self.cursor.fetchall()
if types_result != []:
sem_subjects[int(types_result[0][1])].append(subject)
for tr in types_result:
types[subject].append(tr[0])
data = {}
data['permutation'] = []
data['semester'] = []
data['permutation'] = []
data['time'] = []
data['day'] = []
data['name'] = []
data['venue'] = []
count = [0,0]
for sem in sem_subjects:
subjects = sem_subjects[sem]
if subjects != []:
cols = ""
tables = ""
where_clause = ""
first = True
table_names = []
type_map = {}
params = []
clashes_str = ""
for i,subject in enumerate(subjects):
for l_type in types[subject]:
tn = 't' + str(i) + str(l_type)
type_map[tn] = [subject,l_type]
table_names.append(tn)
if first:
cols += tn+".lecture_group"
tables += self.name+" "+tn
where_clause += tn+".name = ? and " + tn + ".type = ?"
params.append(subject)
params.append(l_type)
first = False
else:
cols += ","+tn+".lecture_group"
tables += " join "+self.name+" "+tn
where_clause += " and "+tn+".name = ? and " + tn + ".type = ?"
params.append(subject)
params.append(l_type)
#print table_names
if len(table_names)>2:
clashes_str += "sum( case"
for i,j in combinations(table_names,2):
clashes_str += " when "
clashes_str += "strftime('%s',"+i+".end_time) - strftime('%s',"+i+".start_time) + "
clashes_str += "strftime('%s',"+j+".end_time) - strftime('%s',"+j+".start_time) "
clashes_str += "> (select max( "
clashes_str += "abs( strftime('%s',"+i+".end_time) - strftime('%s',"+j+".start_time) ),"
clashes_str += "abs( strftime('%s',"+j+".end_time) - strftime('%s',"+i+".start_time) )"
clashes_str += " )) "
clashes_str += "and "+j+".day = "+i+".day then 1"
clashes_str += " else 0 end )"
else:
clashes_str += "sum( 0 )"
sql='select '+ cols +', '+ clashes_str + ' from ' + tables + " where " + where_clause + ' group by ' + cols + ';'
#print sql
self.cursor.execute(sql,params)
clashes_perms = self.cursor.fetchall()
perm = 0
for clashes_perm in clashes_perms:
clash_num = clashes_perm[len(table_names)]
#print clash_num/len(subjects)
if clash_num/len(subjects) <= clashes:
for i,tn in enumerate(table_names):
subject, l_type = type_map[tn]
group = clashes_perm[i]
results = self.select(cols=['start_time','end_time','day','venue'],
where={'type':l_type,'name':subject,'lecture_group':group})
for i,venue in enumerate(results['venue']):
start_time = datetime.datetime.strptime(results['start_time'][i],'%H:%M:%S')
end_time =datetime.datetime.strptime(results['end_time'][i],'%H:%M:%S')
diff = end_time-start_time
for j in xrange(int(math.ceil(float(diff.seconds)/3600.))):
new_time = start_time+datetime.timedelta(hours=j)
data['permutation'].append(perm)
data['semester'].append(sem)
data['name'].append(subject)
data['venue'].append(venue)
data['day'].append(results['day'][i])
data['time'].append( new_time.strftime('%H:%M:%S') )
perm += 1
count[sem-1] += 1
self.close()
db = TimeTableDB()
db.open()
db.cursor.execute("DROP TABLE IF EXISTS " + db.name + ";")
#self.connection.commit()
db.make_table()
db.insert(data)
db.close()
return count
from Tkinter import *
import Tkinter
from AutocompleteEntry import AutocompleteEntry
from UserOptionsDB import UserOptionsDB
from AllCoursesDB import AllCoursesDB
from TimeTableDB import TimeTableDB
user_options = UserOptionsDB()
all_courses = AllCoursesDB()
time_table_db = TimeTableDB()
class RowCursor:
def __init__(self):
self.row = 0
def get(self):
self.row = self.row + 1
return self.row
def Notice(context,message):
NoticeLabel = Label(context, text = message)
NoticeLabel.pack()
NoticeLabel.after(2000, NoticeLabel.destroy)
top = Tk()
# Frames
GetCoursesFrame = Frame(top)
GetCoursesFrame.pack()
SubjectsFrame = Frame(top)
