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SessionExample.py
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# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements. See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership. The ASF licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License. You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing,
# software distributed under the License is distributed on an
# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
# KIND, either express or implied. See the License for the
# specific language governing permissions and limitations
# under the License.
#
# Uncomment the following line to use apache-iotdb module installed by pip3
from iotdb.Session import Session
from iotdb.utils.IoTDBConstants import TSDataType, TSEncoding, Compressor
from iotdb.utils.Tablet import Tablet
# creating session connection.
ip = "127.0.0.1"
port_ = "6667"
username_ = "root"
password_ = "root"
session = Session(ip, port_, username_, password_, fetch_size=1024, zone_id="UTC+8")
session.open(False)
# set and delete storage groups
session.set_storage_group("root.sg_test_01")
session.set_storage_group("root.sg_test_02")
session.set_storage_group("root.sg_test_03")
session.set_storage_group("root.sg_test_04")
session.delete_storage_group("root.sg_test_02")
session.delete_storage_groups(["root.sg_test_03", "root.sg_test_04"])
# setting time series.
session.create_time_series(
"root.sg_test_01.d_01.s_01", TSDataType.BOOLEAN, TSEncoding.PLAIN, Compressor.SNAPPY
)
session.create_time_series(
"root.sg_test_01.d_01.s_02", TSDataType.INT32, TSEncoding.PLAIN, Compressor.SNAPPY
)
session.create_time_series(
"root.sg_test_01.d_01.s_03", TSDataType.INT64, TSEncoding.PLAIN, Compressor.SNAPPY
)
# setting multiple time series once.
ts_path_lst_ = [
"root.sg_test_01.d_01.s_04",
"root.sg_test_01.d_01.s_05",
"root.sg_test_01.d_01.s_06",
"root.sg_test_01.d_01.s_07",
"root.sg_test_01.d_01.s_08",
"root.sg_test_01.d_01.s_09",
]
data_type_lst_ = [
TSDataType.FLOAT,
TSDataType.DOUBLE,
TSDataType.TEXT,
TSDataType.FLOAT,
TSDataType.DOUBLE,
TSDataType.TEXT,
]
encoding_lst_ = [TSEncoding.PLAIN for _ in range(len(data_type_lst_))]
compressor_lst_ = [Compressor.SNAPPY for _ in range(len(data_type_lst_))]
session.create_multi_time_series(
ts_path_lst_, data_type_lst_, encoding_lst_, compressor_lst_
)
# delete time series
session.delete_time_series(
[
"root.sg_test_01.d_01.s_07",
"root.sg_test_01.d_01.s_08",
"root.sg_test_01.d_01.s_09",
]
)
# checking time series
print(
"s_07 expecting False, checking result: ",
session.check_time_series_exists("root.sg_test_01.d_01.s_07"),
)
print(
"s_03 expecting True, checking result: ",
session.check_time_series_exists("root.sg_test_01.d_01.s_03"),
)
# insert one record into the database.
measurements_ = ["s_01", "s_02", "s_03", "s_04", "s_05", "s_06"]
values_ = [False, 10, 11, 1.1, 10011.1, "test_record"]
data_types_ = [
TSDataType.BOOLEAN,
TSDataType.INT32,
TSDataType.INT64,
TSDataType.FLOAT,
TSDataType.DOUBLE,
TSDataType.TEXT,
]
session.insert_record("root.sg_test_01.d_01", 1, measurements_, data_types_, values_)
# insert multiple records into database
measurements_list_ = [
["s_01", "s_02", "s_03", "s_04", "s_05", "s_06"],
["s_01", "s_02", "s_03", "s_04", "s_05", "s_06"],
]
values_list_ = [
[False, 22, 33, 4.4, 55.1, "test_records01"],
[True, 77, 88, 1.25, 8.125, "test_records02"],
]
data_type_list_ = [data_types_, data_types_]
device_ids_ = ["root.sg_test_01.d_01", "root.sg_test_01.d_01"]
session.insert_records(
device_ids_, [2, 3], measurements_list_, data_type_list_, values_list_
)
# insert one tablet into the database.
values_ = [
[False, 10, 11, 1.1, 10011.1, "test01"],
[True, 100, 11111, 1.25, 101.0, "test02"],
[False, 100, 1, 188.1, 688.25, "test03"],
[True, 0, 0, 0, 6.25, "test04"],
] # Non-ASCII text will cause error since bytes can only hold 0-128 nums.
timestamps_ = [4, 5, 6, 7]
tablet_ = Tablet(
"root.sg_test_01.d_01", measurements_, data_types_, values_, timestamps_
)
session.insert_tablet(tablet_)
# insert multiple tablets into database
tablet_01 = Tablet(
"root.sg_test_01.d_01", measurements_, data_types_, values_, [8, 9, 10, 11]
)
tablet_02 = Tablet(
"root.sg_test_01.d_01", measurements_, data_types_, values_, [12, 13, 14, 15]
)
session.insert_tablets([tablet_01, tablet_02])
# insert records of one device
time_list = [1, 2, 3]
measurements_list = [
["s_01", "s_02", "s_03"],
["s_01", "s_02", "s_03"],
["s_01", "s_02", "s_03"],
]
data_types_list = [
[TSDataType.BOOLEAN, TSDataType.INT32, TSDataType.INT64],
[TSDataType.BOOLEAN, TSDataType.INT32, TSDataType.INT64],
[TSDataType.BOOLEAN, TSDataType.INT32, TSDataType.INT64],
]
values_list = [[False, 22, 33], [True, 1, 23], [False, 15, 26]]
session.insert_records_of_one_device(
"root.sg_test_01.d_01", time_list, measurements_list, data_types_list, values_list
)
# execute non-query sql statement
session.execute_non_query_statement(
"insert into root.sg_test_01.d_01(timestamp, s_02) values(16, 188)"
)
# execute sql query statement
session_data_set = session.execute_query_statement("select * from root.sg_test_01.d_01")
session_data_set.set_fetch_size(1024)
while session_data_set.has_next():
print(session_data_set.next())
session_data_set.close_operation_handle()
# close session connection.
session.close()
print("All executions done!!")