def create_transaction(client, num_customers, max_txn_amount):
#
# This method is going to create a random transaction that moves a random amount
# from a source customer to a destination customer. Prior to committing the transaction
# a check will be performed to insure that the source customer has a sufficient balance
# to cover the amount and not go into an overdrawn state.
#
uuid = uuid4().urn[9:]
source_id = randint(1, num_customers)
dest_id = randint(1, num_customers)
while dest_id == source_id:
dest_id = randint(1, num_customers)
amount = randint(1, max_txn_amount)
transaction = {"uuid": uuid, "sourceCust": source_id, "destCust": dest_id , "amount": amount}
res = client.query(
q.let(
{"source_customer": q.get(q.match(q.index("customer_by_id"), source_id)),
"dest_customer": q.get(q.match(q.index("customer_by_id"), dest_id))},
q.let(
{"source_balance": q.select(["data", "balance"], q.var("source_customer")),
"dest_balance": q.select(["data", "balance"], q.var("dest_customer"))},
q.let(
{"new_source_balance": q.subtract(q.var("source_balance"), amount),
"new_dest_balance": q.add(q.var("dest_balance"), amount)},
q.if_(
q.gte(q.var("new_source_balance"), 0),
q.do(
q.create(q.class_("transactions"), {"data": transaction}),
q.update(q.select("ref", q.var("source_customer")),
{"data": {"txnID": uuid, "balance": q.var("new_source_balance")}}),
q.update(q.select("ref", q.var("dest_customer")),
{"data": {"txnID": uuid, "balance": q.var("new_dest_balance")}})
),
"Error. Insufficient funds."
)
)
)
)
)
def wordPartsGenerator(word):
return q.let(
{
"indexes":
q.map_(
# Reduce this array if you want less ngrams per word.
# Setting it to [ 0 ] would only create the word itself, Setting it to [0, 1] would result in the word itself
# and all ngrams that are one character shorter, etc..
lambda index: q.subtract(q.length(word), index),
maxNgrams),
"indexesFiltered":
q.filter_(
# left min parts length 3
lambda l: q.gte(l, 3),
q.var('indexes')),
"ngramsArray":
q.distinct(
q.union(
q.map_(lambda l: q.ngram(q.lowercase(word), l, l),
q.var('indexesFiltered'))))
},
q.var('ngramsArray'))
def test_gte(self):
self.assertJson(query.gte(1), '{"gte":1}')
self.assertJson(query.gte(1, 2, 3), '{"gte":[1,2,3]}')
self.assertJson(query.gte([1, 2, 3]), '{"gte":[1,2,3]}')
def test_gte(self):
self.assertTrue(self._q(query.gte(1, 1)))