def create_schema(client):
# creating objects doctype
movie_obj = WOQLQuery().doctype("Movie",
label="Movie Title",
description="Movie short description")
person_obj = WOQLQuery().doctype("Person", label="Name of the person")
genre_obj = WOQLQuery().doctype("Genre", label="Genre of a movie")
# adding property
movie_obj = (movie_obj.property(
"Director", "Person", label="Dirctor of the movie").property(
"Cast", "Person", label="Cast of the movie").property(
"MovieGenre", "Genre", label="Genre of the movie").property(
"Year", "xsd:integer", label="Year of release").property(
"Runtime",
"xsd:integer",
label="Runtime",
description="Runtime of the movie in mins").property(
"Rating",
"xsd:decimal",
label="Rating of the movie",
description="User rating for the movie 0-10").
property("Votes",
"xsd:integer",
label="Votes",
description="Number of votes"))
WOQLQuery().woql_and(movie_obj, genre_obj, person_obj).execute(
client, "Building Schema for the movie graph")
def create_schema(client):
"""The query which creates the schema
Parameters - it uses variables rather than the fluent style as an example
==========
client : a WOQLClient() connection
"""
base = WOQLQuery().doctype("EphemeralEntity").label(
"Ephemeral Entity").description("An entity that has a lifespan")
base.property("lifespan_start", "dateTime").label("Existed From")
base.property("lifespan_end", "dateTime").label("Existed To")
country = WOQLQuery().add_class("Country").label("Country").description(
"A nation state").parent("EphemeralEntity")
country.property("iso_code", "string").label("ISO Code")
country.property("fip_code", "string").label("FIP Code")
airline = WOQLQuery().add_class("Airline").label("Airline").description(
"An operator of airplane flights").parent("EphemeralEntity")
airline.property("registered_in", "Country").label("Registered In"),
airport = WOQLQuery().add_class("Airport").label("Airport").description(
"An airport where flights terminate").parent("EphemeralEntity")
airport.property("situated_in", "Country").label("Situated In"),
flight = WOQLQuery().add_class("Flight").label("Flight").description(
"A flight between airports").parent("EphemeralEntity")
flight.property("departs", "Airport").label("Departs")
flight.property("arrives", "Airport").label("Arrives")
flight.property("operated_by", "Airline").label("Operated By")
schema = WOQLQuery().when(True).woql_and(base, country, airline, airport,
flight)
return schema.execute(client)