def load_cdr(self):
call_dimension = Dimension(
name='"DimCall"',
key='uuid',
attributes=[
"SipFromUser", 'SipToUser', 'HangupCause', 'Direction',
'SwitchName', 'CallerContext', 'IsAnswered', 'Duration',
'ObjClass', 'ObjType', 'ObjCategory', 'CompanyId', 'TenantId',
'AppId', 'AgentSkill', 'OriginatedLegs', 'DVPCallDirection',
'HangupDisposition', 'AgentAnswered', 'IsQueued',
'SipResource', 'BusinessUnit', 'CampaignId', 'CampaignName',
'ExtraData'
])
call_fact_table = FactTable(
name='"FactCall"',
keyrefs=[
'uuid', 'CallUuid', 'BridgeUuid', 'CreatedDateDimId',
'AnsweredDateDimId', 'BridgedDateDimId', 'HangupDateDimId',
'CreatedTimeDimId', 'AnsweredTimeDimId', 'BridgedTimeDimId',
'HangupTimeDimId'
],
measures=[
'CreatedTime', 'AnsweredTime', 'BridgedTime', 'HangupTime',
'BillSec', 'HoldSec', 'ProgressSec', 'QueueSec', 'AnswerSec',
'WaitSec', 'ProgressMediaSec', 'FlowBillSec'
])
self.row['uuid'] = call_dimension.ensure(self.row)
call_fact_table.insert(self.row)
def load_tickets(self):
ticket_dimension = Dimension(
name='"DimTicket"',
key='ticket_id',
attributes=[
'active', 'tid', 'is_sub_ticket', 'subject', 'reference',
'description', 'priority', 'requester', 'submitter',
'collaborators', 'watchers', 'attachments', 'sub_tickets',
'related_tickets', 'merged_tickets', 'isolated_tags', 'sla',
'comments', 'tags', 'ticket_type', 'status_type', 'channel',
'company', 'tenant', 'assignee', 'assignee_group',
'security_level', 'event_author'
])
ticket_fact_table = FactTable(
name='"FactTicket"',
keyrefs=[
'engagement_session_id', 'ticket_id', 'created_at_dim_id',
'updated_at_dim_id', 'due_at_dim_id', 'created_time_dim_id',
'updated_time_dim_id', 'due_time_dim_id'
],
measures=[
'created_at', 'updated_at', 'due_at', 'time_estimation',
're_opens', 'waited_time', 'worked_time', 'resolution_time'
])
# Updates the row with the primary keys of each dimension while at the same time inserting new data into
# each dimension
self.row['ticket_id'] = ticket_dimension.ensure(self.row)
ticket_fact_table.insert(self.row)
def load_engagement(self):
engagement_dimension = Dimension(
name='"DimEngagement"',
key='engagement_id',
attributes=['profile', 'channel_from', 'channel_to', 'company', 'has_profile', 'tenant', 'notes', 'channel'])
engagement_fact_table = FactTable(
name='"FactEngagement"',
keyrefs=['engagement_id', 'created_at_dim_id', 'updated_at_dim_id', 'created_time_dim_id', 'updated_time_dim_id'],
measures=['updated_at', 'created_at'])
self.row['eng_dim_id'] = engagement_dimension.ensure(self.row)
engagement_fact_table.insert(self.row)
return True
def load_ticket_events(self):
ticket_event_dimension = Dimension(
name='"DimTicketEvent"',
key='ticket_event_id',
attributes=['event_type', 'event_author', 'event_body'])
ticket_event_fact_table = FactTable(
name='"FactTicketEvent"',
keyrefs=['ticket_id', 'ticket_event_id'],
measures=['event_created_at_dim_id', 'event_created_at'])
# Update the row with the primary keys of each dimension while at the same time inserting new data into
# each dimension
ticket_event_dimension.ensure(self.row)
ticket_event_fact_table.insert(self.row)
def load_external_users(self):
external_users_dimension = Dimension(
name='"DimExternalUsers"',
key='external_user_id',
attributes=['title', 'name', 'avatar', 'birthday', 'gender', 'first_name', 'last_name',
'locale', 'ssn', 'password', 'phone', 'email', 'landnumber', 'facebook', 'twitter', 'linkedin',
'googleplus', 'skype', 'thirdpartyreference', 'company', 'tenant', 'custom_fields', 'tags',
'contacts', 'zipcode', 'address_number', 'city', 'province', 'country'])
external_users_fact_table = FactTable(
name='"FactExternalUsers"',
keyrefs=['external_user_id', 'created_at_dim_id', 'updated_at_dim_id', 'created_time_dim_id', 'updated_time_dim_id'],
measures=['created_at', 'updated_at'])
self.row['external_user_id'] = external_users_dimension.ensure(self.row)
external_users_fact_table.insert(self.row)
time_dimension = Dimension(
name='time',
key='timeid',
attributes=['day', 'month', 'year'])
location_dimension = Dimension(
name='location',
key='locationid',
attributes=['city', 'region'],
lookupatts=['city'])
# A single instance of FactTable is created for the data warehouse's
# fact table, with the name of the table, a list of attributes constituting
# the primary key of the fact table, and lastly, the list of measures.
fact_table = FactTable(
name='facttable',
keyrefs=['bookid', 'locationid', 'timeid'],
measures=['sale'])
# A normal Python function is used to split the timestamp into its parts
def split_timestamp(row):
"""Splits a timestamp containing a date into its three parts"""
# First the timestamp is extracted from the row dictionary
timestamp = row['timestamp']
# Then the string is split on the / in the time stamp
timestamp_split = timestamp.split('/')
# Finally each part is reassigned to the row dictionary. It can then be
# accessed by the caller as the row is a reference to the dict object
row['year'] = timestamp_split[0]
""" A sample pygrametl program
"""
__author__ = 'Mathias Claus Jensen'
import pygrametl
from pygrametl.datasources import SQLSource
from pygrametl.tables import Dimension, FactTable
import sqlite3
input_conn = sqlite3.connect('input.db')
output_conn = sqlite3.connect('output.db')
input_src = SQLSource(input_conn, query='SELECT * dim1')
output_wrapper = pygrametl.ConnectionWrapper(connection=output_conn)
dim1 = Dimension(name='dim1', key='key1', attributes=['attr1', 'attr2'])
dim1 = Dimension(name='dim2', key='key2', attributes=['attr3', 'attr4'])
ft1 = FactTable(name='ft1', keyrefs=[
'key1',
])
input_conn.close()
output_conn.close()
def cls_to_pygram_fact(cls, schema_name):
fct = FactTable(name=schema_name + '.' + cls.cls_get_name(),
keyrefs=cls.cls_get_key_names(),
measures=cls.cls_get_measure_names())
return fct
company_info = [('The Hobbit', 1), ('The Bobbit', 5)]
# ... and inserting the necessary data.
c.executemany("INSERT INTO FACTTABLE (BOOK,ISSUE) VALUES (?,?)", company_info)
conn.commit()
ConnectionWrapper(conn)
dim = Dimension('COMPANY', 'ID', ['NAME', 'AGE', 'ADDRESS', 'SALARY'], ['NAME'])
dim_rep = DimRepresentation(dim, conn)
dim2 = Dimension('LASTNAME', 'NAME', ['LAST'])
dim_rep2 = DimRepresentation(dim2, conn)
ft = FactTable('FACTTABLE', ['Book'], ['Issue'])
ft_rep = FTRepresentation(ft, conn)
dw = DWRepresentation([dim_rep, ft_rep, dim_rep2], conn)
expected_list1 = [
{'NAME': 'Anders', 'AGE': 43, 'SALARY': 21000.0, 'ADDRESS': 'Denmark',
'ID': 1},
{'NAME': 'Charles', 'AGE': 50, 'SALARY': 25000.0, 'ADDRESS': 'Texas',
'ID': 2},
{'NAME': 'Wolf', 'AGE': 28, 'SALARY': 19000.0, 'ADDRESS': 'Sweden',
'ID': 3},
{'NAME': 'Hannibal', 'AGE': 45, 'SALARY': 65000.0, 'ADDRESS': 'America',
'ID': 4},
{'NAME': 'Buggy', 'AGE': 67, 'SALARY': 2000.0, 'ADDRESS': 'America',
'ID': 5}
def __create_tables(self):
# Systems
self.system_dimension = CachedDimension(name='system',
key='system_id',
attributes=['system_name'],
lookupatts=['system_name'])
# Stations
self.start_station_dimension = CachedDimension(
name='start_station',
key='start_station_id',
attributes=[
'system_id', 'start_station_short_name', 'start_station_name',
'start_station_latitude', 'start_station_longitude',
'start_station_capacity'
],
lookupatts=['system_id', 'start_station_short_name'],
rowexpander=start_station_missing_data_expander)
self.end_station_dimension = CachedDimension(
name='end_station',
key='end_station_id',
attributes=[
'system_id', 'end_station_short_name', 'end_station_name',
'end_station_latitude', 'end_station_longitude',
'end_station_capacity'
],
lookupatts=['system_id', 'end_station_short_name'],
rowexpander=end_station_missing_data_expander)
# Trip dates and times
self.date_dimension = CachedDimension(
name='bdate',
key='date_id',
attributes=['year', 'month', 'day', 'day_of_week', 'date_string'],
lookupatts=['date_string'],
rowexpander=date_row_expander)
self.time_dimension = CachedDimension(
name='btime',
key='time_id',
attributes=['hour', 'minute', 'time_string', 'time_of_day'],
lookupatts=['time_string'],
rowexpander=time_row_expander)
# Trips
self.trip_fact_table = FactTable(
name='trips',
measures=['duration_s'],
keyrefs=[
'system_id', 'start_station_id', 'end_station_id', 'date_id',
'time_id', 'customer_birthyear_id', 'customer_gender_id',
'customer_type_id', 'bike_id', 'trip_category_id'
])
# weather fact table and date dimension
self.weather_fact_table = FactTable(name='weather',
measures=[
'precipitation_in', 'snow_in',
'temp_avg_f', 'temp_min_f',
'temp_max_f', 'wind_mph'
],
keyrefs=['system_id', 'date_id'])
self.trip_category = CachedDimension(name='trip_category',
key='trip_category_id',
attributes=['trip_category'])
self.bike_dimension = CachedDimension(
name='bikes',
key='bike_id',
attributes=['system_id', 'bike_name'],
lookupatts=['system_id', 'bike_name'],
defaultidvalue=-1)
self.customer_gender_dimension = CachedDimension(
name='customer_gender',
key='customer_gender_id',
attributes=['customer_gender'],
lookupatts=['customer_gender'])
self.customer_birthyear_dimension = CachedDimension(
name='customer_birthyear',
key='customer_birthyear_id',
attributes=['customer_birthyear'],
lookupatts=['customer_birthyear'])
self.customer_type_dimension = CachedDimension(
name='customer_type',
key='customer_type_id',
attributes=['customer_type'],
lookupatts=['customer_type'])
# Station status
self.station_status_fact_table = FactTable(
name='station_status',
keyrefs=['system_id', 'start_station_id', 'date_id', 'time_id'],
measures=['bikes_available', 'docks_available'])
# Non-cached version of stations for use only with updating Indego stations.
self.start_station_noncached_dimension = Dimension(
name='start_station',
key='start_station_id',
attributes=[
'system_id', 'start_station_short_name', 'start_station_name',
'start_station_latitude', 'start_station_longitude',
'start_station_capacity'
],
lookupatts=['system_id', 'start_station_short_name'],
rowexpander=start_station_missing_data_expander,
defaultidvalue=-1)
self.end_station_noncached_dimension = Dimension(
name='end_station',
key='end_station_id',
attributes=[
'system_id', 'end_station_short_name', 'end_station_name',
'end_station_latitude', 'end_station_longitude',
'end_station_capacity'
],
lookupatts=['system_id', 'end_station_short_name'],
rowexpander=end_station_missing_data_expander,
defaultidvalue=-1)