iotdb-client/client-py/session_example_date.py

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# to you under the Apache License, Version 2.0 (the
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# Uncomment the following line to use apache-iotdb module installed by pip3
import numpy as np
from datetime import date
from iotdb.Session import Session
from iotdb.utils.BitMap import BitMap
from iotdb.utils.IoTDBConstants import TSDataType, TSEncoding, Compressor
from iotdb.utils.Tablet import Tablet
from iotdb.utils.NumpyTablet import NumpyTablet

# 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="Asia/Shanghai", enable_redirection=True)
session = Session.init_from_node_urls(
    node_urls=["127.0.0.1:6667", "127.0.0.1:6668", "127.0.0.1:6669"],
    user="root",
    password="root",
    fetch_size=1024,
    zone_id="Asia/Shanghai",
    enable_redirection=True,
)
session.open(False)

# create and delete databases
session.set_storage_group("root.sg_test_01")

# setting time series.
session.create_time_series(
    "root.sg_test_01.d_01.s_01", TSDataType.BOOLEAN, TSEncoding.PLAIN, Compressor.SNAPPY
)

# insert tablet with new data types
measurements_new_type = ["s_01", "s_02", "s_03", "s_04"]
data_types_new_type = [
    TSDataType.DATE,
    TSDataType.TIMESTAMP,
    TSDataType.BLOB,
    TSDataType.STRING,
]
values_new_type = [
    [date(2024, 1, 1), 1, b"\x12\x34", "test01"],
    [date(2024, 1, 2), 2, b"\x12\x34", "test02"],
    [date(2024, 1, 3), 3, b"\x12\x34", "test03"],
    [date(2024, 1, 4), 4, b"\x12\x34", "test04"],
]
timestamps_new_type = [1, 2, 3, 4]
tablet_new_type = Tablet(
    "root.sg_test_01.d_04",
    measurements_new_type,
    data_types_new_type,
    values_new_type,
    timestamps_new_type,
)
session.insert_tablet(tablet_new_type)
np_values_new_type = [
    np.array([date(2024, 2, 4), date(2024, 3, 4), date(2024, 4, 4), date(2024, 5, 4)]),
    np.array([5, 6, 7, 8], TSDataType.INT64.np_dtype()),
    np.array([b"\x12\x34", b"\x12\x34", b"\x12\x34", b"\x12\x34"]),
    np.array(["test01", "test02", "test03", "test04"]),
]
np_timestamps_new_type = np.array([5, 6, 7, 8], TSDataType.INT64.np_dtype())
np_tablet_new_type = NumpyTablet(
    "root.sg_test_01.d_04",
    measurements_new_type,
    data_types_new_type,
    np_values_new_type,
    np_timestamps_new_type,
)
session.insert_tablet(np_tablet_new_type)
with session.execute_query_statement(
    "select s_01 from root.sg_test_01.d_04 limit 1"
) as dataset:
    print(dataset.get_column_names())
    while dataset.has_next():
        print(dataset.next())

with session.execute_query_statement(
    "select s_01 from root.sg_test_01.d_04 limit 1"
) as dataset:
    df = dataset.todf()
    print(df.to_string())

# delete database
session.delete_storage_group("root.sg_test_01")

# close session connection.
session.close()

print("All executions done!!")