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# coding: utf-8
# -------------------------------------------------------------------------
# Copyright (c) Microsoft Corporation. All rights reserved.
# Licensed under the MIT License. See License.txt in the project root for
# license information.
# --------------------------------------------------------------------------
"""
FILE: sample_update_upsert_merge_entities.py
DESCRIPTION:
These samples demonstrate the following: updating, upserting, and merging entities.
USAGE:
python sample_update_upsert_merge_entities.py
Set the environment variables with your own values before running the sample:
1) TABLES_STORAGE_ENDPOINT_SUFFIX - the Table service account URL suffix
2) TABLES_STORAGE_ACCOUNT_NAME - the name of the storage account
3) TABLES_PRIMARY_STORAGE_ACCOUNT_KEY - the storage account access key
"""
import sys
from datetime import datetime
from dotenv import find_dotenv, load_dotenv
import os
from uuid import uuid4, UUID
from typing_extensions import TypedDict
class EntityType(TypedDict, total=False):
PartitionKey: str
RowKey: str
text: str
color: str
price: float
last_updated: datetime
product_id: UUID
inventory_count: int
barcode: bytes
class TableEntitySamples(object):
def __init__(self):
load_dotenv(find_dotenv())
self.access_key = os.environ["TABLES_PRIMARY_STORAGE_ACCOUNT_KEY"]
self.endpoint_suffix = os.environ["TABLES_STORAGE_ENDPOINT_SUFFIX"]
self.account_name = os.environ["TABLES_STORAGE_ACCOUNT_NAME"]
self.connection_string = f"DefaultEndpointsProtocol=https;AccountName={self.account_name};AccountKey={self.access_key};EndpointSuffix={self.endpoint_suffix}"
self.table_base = "SampleUpdateUpsertMerge"
def create_and_get_entities(self):
# Instantiate a table client
from azure.data.tables import TableClient
with TableClient.from_connection_string(self.connection_string, table_name=self.table_base + "create") as table:
# Create the Table
table.create_table()
my_entity: EntityType = {
"PartitionKey": "color",
"RowKey": "brand",
"text": "Marker",
"color": "Purple",
"price": 4.99,
"last_updated": datetime.today(),
"product_id": uuid4(),
"inventory_count": 42,
"barcode": b"135aefg8oj0ld58", # cspell:disable-line
}
try:
created_entity = table.create_entity(entity=my_entity)
print(f"Created entity: {created_entity}")
# [START get_entity]
# Get Entity by partition and row key
got_entity = table.get_entity(partition_key=my_entity["PartitionKey"], row_key=my_entity["RowKey"])
print(f"Received entity: {got_entity}")
# [END get_entity]
finally:
# Delete the table
table.delete_table()
def list_all_entities(self):
# Instantiate a table client
from azure.data.tables import TableClient
with TableClient.from_connection_string(self.connection_string, table_name=self.table_base + "list") as table:
# Create the table
table.create_table()
entity = {
"PartitionKey": "color2",
"RowKey": "sharpie",
"text": "Marker",
"color": "Purple",
"price": 5.99,
"inventory": 42,
"product_id": uuid4(),
}
entity1 = {
"PartitionKey": "color2",
"RowKey": "crayola",
"text": "Marker",
"color": "Red",
"price": 3.99,
"inventory": 42,
"product_id": uuid4(),
}
try:
# Create entities
table.create_entity(entity=entity)
table.create_entity(entity=entity1)
# [START list_entities]
# Query the entities in the table
entities = list(table.list_entities())
for i, entity in enumerate(entities):
print(f"Entity #{entity}: {i}")
# [END list_entities]
finally:
# Delete the table
table.delete_table()
def update_entities(self):
# Instantiate a table client
from azure.data.tables import TableClient
from azure.data.tables import UpdateMode
with TableClient.from_connection_string(self.connection_string, table_name=self.table_base + "update") as table:
# Create the table and Table Client
table.create_table()
entity = {
"PartitionKey": "color2",
"RowKey": "sharpie",
"text": "Marker",
"color": "Purple",
"price": 5.99,
"inventory": 42,
"product_id": uuid4(),
}
entity1 = {
"PartitionKey": "color2",
"RowKey": "crayola",
"text": "Marker",
"color": "Red",
"price": 3.99,
"inventory": 42,
"product_id": uuid4(),
}
try:
# Create entities
table.create_entity(entity=entity)
created = table.get_entity(partition_key=str(entity["PartitionKey"]), row_key=str(entity["RowKey"]))
# [START upsert_entity]
# Try Replace and insert on fail
insert_entity = table.upsert_entity(mode=UpdateMode.REPLACE, entity=entity1)
print(f"Inserted entity: {insert_entity}")
created["text"] = "NewMarker"
merged_entity = table.upsert_entity(mode=UpdateMode.MERGE, entity=entity)
print(f"Merged entity: {merged_entity}")
# [END upsert_entity]
# [START update_entity]
# Update the entity
created["text"] = "NewMarker"
table.update_entity(mode=UpdateMode.REPLACE, entity=created)
# Get the replaced entity
replaced = table.get_entity(partition_key=str(created["PartitionKey"]), row_key=str(created["RowKey"]))
print(f"Replaced entity: {replaced}")
# Merge the entity
replaced["color"] = "Blue"
table.update_entity(mode=UpdateMode.MERGE, entity=replaced)
# Get the merged entity
merged = table.get_entity(partition_key=str(replaced["PartitionKey"]), row_key=str(replaced["RowKey"]))
print(f"Merged entity: {merged}")
# [END update_entity]
finally:
# Delete the table
table.delete_table()
if __name__ == "__main__":
sample = TableEntitySamples()
sample.create_and_get_entities()
sample.list_all_entities()
sample.update_entities()
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