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TablesGettingStarted.cpp
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// -----------------------------------------------------------------------------------------
// <copyright file="TablesGettingStarted.cpp" company="Microsoft">
// Copyright 2013 Microsoft Corporation
//
// Licensed 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.
// </copyright>
// -----------------------------------------------------------------------------------------
#include "samples_common.h"
#include <was/storage_account.h>
#include <was/table.h>
namespace azure { namespace storage { namespace samples {
SAMPLE(TablesGettingStarted, tables_getting_started_sample)
void tables_getting_started_sample()
{
try
{
// Initialize storage account
azure::storage::cloud_storage_account storage_account = azure::storage::cloud_storage_account::parse(storage_connection_string);
// Create a table
azure::storage::cloud_table_client table_client = storage_account.create_cloud_table_client();
azure::storage::cloud_table table = table_client.get_table_reference(_XPLATSTR("MySampleTable"));
// Return value is true if the table did not exist and was successfully created.
table.create_if_not_exists();
// Insert a table entity
azure::storage::table_entity entity(_XPLATSTR("MyPartitionKey"), _XPLATSTR("MyRowKey"));
azure::storage::table_entity::properties_type& properties = entity.properties();
properties.reserve(8);
properties[_XPLATSTR("StringProperty")] = azure::storage::entity_property(utility::string_t(_XPLATSTR("some string")));
properties[_XPLATSTR("DateTimeProperty")] = azure::storage::entity_property(utility::datetime::utc_now());
properties[_XPLATSTR("GuidProperty")] = azure::storage::entity_property(utility::new_uuid());
properties[_XPLATSTR("Int32Property")] = azure::storage::entity_property(1234567890);
properties[_XPLATSTR("Int64Property")] = azure::storage::entity_property((int64_t) 1234567890123456789LL);
properties[_XPLATSTR("DoubleProperty")] = azure::storage::entity_property(9.1234567890123456789);
properties[_XPLATSTR("BooleanProperty")] = azure::storage::entity_property(true);
properties[_XPLATSTR("BinaryProperty")] = azure::storage::entity_property(std::vector<uint8_t>(10, 'X'));
azure::storage::table_operation insert_operation = azure::storage::table_operation::insert_entity(entity);
azure::storage::table_result insert_result = table.execute(insert_operation);
// Retrieve a table entity
azure::storage::table_operation retrieve_operation = azure::storage::table_operation::retrieve_entity(_XPLATSTR("MyPartitionKey"), _XPLATSTR("MyRowKey"));
azure::storage::table_result retrieve_result = table.execute(retrieve_operation);
// Insert table entities in a batch
// A batch can contain a single retrieve operation or any mix of other types of operations up to 100 operations.
// All the operations in a batch must be for entities with the same Partition Key and different Row Keys.
azure::storage::table_batch_operation batch_operation;
for (int i = 0; i < 10; ++i)
{
utility::string_t row_key = _XPLATSTR("MyRowKey") + utility::conversions::to_string_t(std::to_string(i));
azure::storage::table_entity entity2(_XPLATSTR("MyPartitionKey"), row_key);
azure::storage::table_entity::properties_type& properties2 = entity2.properties();
properties2.reserve(3);
properties2[_XPLATSTR("StringProperty")] = azure::storage::entity_property(utility::string_t(_XPLATSTR("another string")));
properties2[_XPLATSTR("DateTimeProperty")] = azure::storage::entity_property(utility::datetime::utc_now());
properties2[_XPLATSTR("GuidProperty")] = azure::storage::entity_property(utility::new_uuid());
batch_operation.insert_entity(entity2);
}
std::vector<azure::storage::table_result> results = table.execute_batch(batch_operation);
// Query for some table entities
azure::storage::table_query query;
query.set_filter_string(azure::storage::table_query::combine_filter_conditions(
azure::storage::table_query::generate_filter_condition(_XPLATSTR("PartitionKey"), azure::storage::query_comparison_operator::equal, _XPLATSTR("MyPartitionKey")),
azure::storage::query_logical_operator::op_and,
azure::storage::table_query::generate_filter_condition(_XPLATSTR("RowKey"), azure::storage::query_comparison_operator::greater_than_or_equal, _XPLATSTR("MyRowKey5"))));
azure::storage::continuation_token token;
do
{
azure::storage::table_query_segment segment = table.execute_query_segmented(query, token);
for (std::vector<azure::storage::table_entity>::const_iterator it = segment.results().cbegin(); it != segment.results().cend(); ++it)
{
const azure::storage::table_entity::properties_type& properties = it->properties();
ucout << _XPLATSTR("PK: ") << it->partition_key() << _XPLATSTR(", RK: ") << it->row_key() << _XPLATSTR(", Prop: ") << utility::uuid_to_string(properties.at(_XPLATSTR("GuidProperty")).guid_value()) << std::endl;
}
token = segment.continuation_token();
} while (!token.empty());
// Delete the table entity
azure::storage::table_operation delete_operation = azure::storage::table_operation::delete_entity(retrieve_result.entity());
azure::storage::table_result delete_result = table.execute(delete_operation);
// Delete the table
// Return value is true if the table did exist and was successfully deleted.
table.delete_table_if_exists();
}
catch (const azure::storage::storage_exception& e)
{
ucout << _XPLATSTR("Error: ") << e.what() << std::endl;
azure::storage::request_result result = e.result();
azure::storage::storage_extended_error extended_error = result.extended_error();
if (!extended_error.message().empty())
{
ucout << extended_error.message() << std::endl;
}
}
catch (const std::exception& e)
{
ucout << _XPLATSTR("Error: ") << e.what() << std::endl;
}
}
}}} // namespace azure::storage::samples