def _querySessions(self, filters, key=None):
"""
Gernal query used for searching Sessions.
"""
if key:
# get Conference object from request; bail if not found
safeKey = ndb.Key(urlsafe=key)
conf = safeKey.get()
if not conf:
raise endpoints.NotFoundException(
'No conference found with key: %s' % key)
q = Session.query(ancestor=safeKey)
else:
q = Session.query()
if filters:
inequality_filter, filters, excluded_values = self._formatMutliInequality(
filters)
# If exists, sort on inequality filter first
if inequality_filter:
q = q.order(ndb.GenericProperty(inequality_filter))
q = q.order(Session.startTime)
q = q.order(Session.name)
for filtr in filters:
formatted_query = ndb.query.FilterNode(filtr["field"],
filtr["operator"],
filtr["value"])
q = q.filter(formatted_query)
if excluded_values:
"""
This code is used to solve query extra credit problem.
Create list of session types but exclude the not equal to type
"""
# Create list by turning TypeOfSession EMUN into dict then
# filtered out values that are in the excluded_values list.
typeOfSession = [typeOfSession for typeOfSession in \
TypeOfSession.to_dict() if typeOfSession\
not in excluded_values]
FilterList = []
# Add additional filter to query
for i in typeOfSession:
FilterList.append(
ndb.query.FilterNode('typeOfSession', '=', i))
q = q.filter(ndb.OR(*FilterList))
return q
def _querySessions(self, filters, key=None):
"""
Gernal query used for searching Sessions.
"""
if key:
# get Conference object from request; bail if not found
safeKey = ndb.Key(urlsafe=key)
conf = safeKey.get()
if not conf:
raise endpoints.NotFoundException(
'No conference found with key: %s' % key)
q = Session.query(ancestor=safeKey)
else:
q = Session.query()
if filters:
inequality_filter, filters, excluded_values = self._formatMutliInequality(filters)
# If exists, sort on inequality filter first
if inequality_filter:
q = q.order(ndb.GenericProperty(inequality_filter))
q = q.order(Session.startTime)
q = q.order(Session.name)
for filtr in filters:
formatted_query = ndb.query.FilterNode(filtr["field"], filtr["operator"], filtr["value"])
q = q.filter(formatted_query)
if excluded_values:
"""
This code is used to solve query extra credit problem.
Create list of session types but exclude the not equal to type
"""
# Create list by turning TypeOfSession EMUN into dict then
# filtered out values that are in the excluded_values list.
typeOfSession = [typeOfSession for typeOfSession in \
TypeOfSession.to_dict() if typeOfSession\
not in excluded_values]
FilterList = []
# Add additional filter to query
for i in typeOfSession:
FilterList.append(ndb.query.FilterNode('typeOfSession', '=', i))
q = q.filter(ndb.OR(*FilterList))
return q
def getConferenceSessionsByType(self, request):
"""
Given a conference, return all sessions of a specified type
(eg lecture, keynote, workshop)
"""
key = ndb.Key(urlsafe=request.websafeConferenceKey)
conf = key.get()
value = request.value.upper()
if not conf:
raise endpoints.NotFoundException(
'No conference found with key: %s' % key)
# Check if field and operation are valid
if request.field != "TYPE" or request.operator not in OPERATORS:
raise endpoints.NotFoundException('Can only filter by type or check operator')
# Check if value is valid
if value not in TypeOfSession.to_dict():
raise endpoints.NotFoundException('Not a valid session type')
sessions = Session.query(ancestor=key).\
filter(ndb.query.FilterNode(FIELDS[request.field],\
OPERATORS[request.operator], value)).\
order(Session.startTime)
return SessionForms(sessions=[self._copySessionToForm(sess)\
for sess in sessions])
def getConferenceSessionsByType(self, request):
"""
Given a conference, return all sessions of a specified type
(eg lecture, keynote, workshop)
"""
key = ndb.Key(urlsafe=request.websafeConferenceKey)
conf = key.get()
value = request.value.upper()
if not conf:
raise endpoints.NotFoundException(
'No conference found with key: %s' % key)
# Check if field and operation are valid
if request.field != "TYPE" or request.operator not in OPERATORS:
raise endpoints.NotFoundException(
'Can only filter by type or check operator')
# Check if value is valid
if value not in TypeOfSession.to_dict():
raise endpoints.NotFoundException('Not a valid session type')
sessions = Session.query(ancestor=key).\
filter(ndb.query.FilterNode(FIELDS[request.field],\
OPERATORS[request.operator], value)).\
order(Session.startTime)
return SessionForms(sessions=[self._copySessionToForm(sess)\
for sess in sessions])
MEMCACHE_ANNOUNCEMENTS_KEY = "RECENT_ANNOUNCEMENTS"
ANNOUNCEMENT_TPL = ('Last chance to attend! The following conferences '
'are nearly sold out: %s')
# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
DEFAULTS = {
"city": "Default City",
"maxAttendees": 0,
"seatsAvailable": 0,
"topics": ["Default", "Topic"],
}
DEFAULT_SESS = {
"highlights": ["Default", "Highlight"],
"duration": "00:00",
"typeOfSession": TypeOfSession("NOT_SPECIFIED"),
"date": "1999-12-12",
"startTime": "12:00",
"location": "Default Location",
}
OPERATORS = {
'EQ': '=',
'GT': '>',
'GTEQ': '>=',
'LT': '<',
'LTEQ': '<=',
'NE': '!='
}
FIELDS = {