create_table_composite_key.cpp - AWS Code Sample


create_table_composite_key.cpp demonstrates how to create an Amazon DynamoDB table that has a composite key.

/* Copyright 2010-2019, Inc. or its affiliates. All Rights Reserved. This file is licensed under the Apache License, Version 2.0 (the "License"). You may not use this file except in compliance with the License. A copy of the License is located at This file 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. */ #include <aws/core/Aws.h> #include <aws/core/utils/Outcome.h> #include <aws/dynamodb/DynamoDBClient.h> #include <aws/dynamodb/model/AttributeDefinition.h> #include <aws/dynamodb/model/CreateTableRequest.h> #include <aws/dynamodb/model/KeySchemaElement.h> #include <aws/dynamodb/model/ProvisionedThroughput.h> #include <aws/dynamodb/model/ScalarAttributeType.h> #include <iostream> /** * Create a DynamoDB table. * * Takes the name of the table to create. The table will contain a * composite key, "Language" (hash) and "Greeting" (range). * * * This code expects that you have AWS credentials set up per: * */ int main(int argc, char** argv) { const std::string USAGE = "\n" \ "Usage:\n" " create_table_composite_key <table> <optional:region>\n\n" "Where:\n" " table - the table to create\n" " region- optional region\n\n" "Example:\n" " create_table_composite_key HelloTable us-west-2\n"; if (argc < 2) { std::cout << USAGE; return 1; } Aws::SDKOptions options; Aws::InitAPI(options); { const Aws::String table(argv[1]); const Aws::String region(argc > 2 ? argv[2] : ""); Aws::Client::ClientConfiguration clientConfig; if (!region.empty()) clientConfig.region = region; Aws::DynamoDB::DynamoDBClient dynamoClient(clientConfig); std::cout << "Creating table " << table << " with a composite primary key:\n" \ "* Language - partition key\n" \ "* Greeting - sort key\n"; Aws::DynamoDB::Model::CreateTableRequest req; Aws::DynamoDB::Model::AttributeDefinition hashKey1, hashKey2; hashKey1.WithAttributeName("Language").WithAttributeType(Aws::DynamoDB::Model::ScalarAttributeType::S); req.AddAttributeDefinitions(hashKey1); hashKey2.WithAttributeName("Greeting").WithAttributeType(Aws::DynamoDB::Model::ScalarAttributeType::S); req.AddAttributeDefinitions(hashKey2); Aws::DynamoDB::Model::KeySchemaElement kse1, kse2; kse1.WithAttributeName("Language").WithKeyType(Aws::DynamoDB::Model::KeyType::HASH); req.AddKeySchema(kse1); kse2.WithAttributeName("Greeting").WithKeyType(Aws::DynamoDB::Model::KeyType::RANGE); req.AddKeySchema(kse2); Aws::DynamoDB::Model::ProvisionedThroughput thruput; thruput.WithReadCapacityUnits(5).WithWriteCapacityUnits(5); req.SetProvisionedThroughput(thruput); req.SetTableName(table); const Aws::DynamoDB::Model::CreateTableOutcome& result = dynamoClient.CreateTable(req); if (result.IsSuccess()) { std::cout << "Table \"" << result.GetResult().GetTableDescription().GetTableName() << "\" was created!\n"; } else { std::cout << "Failed to create table:" << result.GetError().GetMessage(); } } Aws::ShutdownAPI(options); return 0; }

Sample Details

Service: dynamodb

Author: AWS

Type: full-example