DynamoDB support for Spring Data source code

Supported Client Libraries
Supported Operations
Objects
Links
What results can you expect?
Known Limitations

CAST supports DynamoDB via its com.castsoftware.nosqljava extension. Details about the support provided for Java with Spring Data source code is explained below.

Supported Client Libraries

Library		Supported
DynamoDBCrudRepository
DynamoDBPagingAndSortingRepository

Supported Operations

Operations	Scenario	Method Supported
Insert	Spring Framework	org.springframework.data.repository.CrudRepository.save org.springframework.data.repository.CrudRepository.saveAll
Insert	Social SignIn	org.socialsignin.spring.data.dynamodb.repository.DynamoDBCrudRepository.save org.socialsignin.spring.data.dynamodb.repository.DynamoDBCrudRepository.saveAll org.socialsignin.spring.data.dynamodb.repository.DynamoDBPagingAndSortingRepository.save org.socialsignin.spring.data.dynamodb.repository.DynamoDBPagingAndSortingRepository.saveAll
Select	Spring Framework	org.springframework.data.repository.CrudRepository.existsById org.springframework.data.repository.CrudRepository.findAll org.springframework.data.repository.CrudRepository.findById org.springframework.data.repository.PagingAndSortingRepository.findAll
Select	Social SignIn	org.socialsignin.spring.data.dynamodb.repository.DynamoDBCrudRepository.existsById org.socialsignin.spring.data.dynamodb.repository.DynamoDBCrudRepository.findAll org.socialsignin.spring.data.dynamodb.repository.DynamoDBCrudRepository.findById org.socialsignin.spring.data.dynamodb.repository.DynamoDBPagingAndSortingRepository.existsById org.socialsignin.spring.data.dynamodb.repository.DynamoDBPagingAndSortingRepository.findById org.socialsignin.spring.data.dynamodb.repository.DynamoDBPagingAndSortingRepository.findAll
Delete	Spring Framework	org.springframework.data.repository.CrudRepository.delete org.springframework.data.repository.CrudRepository.deleteById org.springframework.data.repository.CrudRepository.deleteAllById org.springframework.data.repository.CrudRepository.deleteAll
Delete	Social SignIn	org.socialsignin.spring.data.dynamodb.repository.DynamoDBCrudRepository.delete org.socialsignin.spring.data.dynamodb.repository.DynamoDBCrudRepository.deleteById org.socialsignin.spring.data.dynamodb.repository.DynamoDBCrudRepository.deleteAllById org.socialsignin.spring.data.dynamodb.repository.DynamoDBCrudRepository.deleteAll org.socialsignin.spring.data.dynamodb.repository.DynamoDBPagingAndSortingRepository.delete org.socialsignin.spring.data.dynamodb.repository.DynamoDBPagingAndSortingRepository.deleteById org.socialsignin.spring.data.dynamodb.repository.DynamoDBPagingAndSortingRepository.deleteAllById org.socialsignin.spring.data.dynamodb.repository.DynamoDBPagingAndSortingRepository.deleteAll

Objects

Icon	Description
	Java_DynamoDB_Client
	Java_DynamoDB_Table
	Java_Unknown_DynamoDB_Client
	Java_Unknown_DynamoDB_Table

Links

Link type	Source and destination of link	Methods Supported
parentLink	Between DynamoDB client object and DynamoDB table	-
useInsertLink	Between the caller Java Method objects and DynamoDB client	save saveAll
useSelectLink	Between the caller Java Method objects and DynamoDB client	existsById findById findAll
useDeleteLink	Between the caller Java Method objects and DynamoDB client	delete deleteById deleteAll deleteAllById

What results can you expect?

Some example scenarios are shown below:

DynamoDB Client with Java Configuration

@Configuration
@EnableDynamoDBRepositories(basePackages = "com.javasampleapproach.dynamodb.repo")
public class DynamoDBConfig {

	@Value("${amazon.dynamodb.endpoint}")
	private String dBEndpoint;

	@Value("${amazon.aws.accesskey}")
	private String accessKey;

	@Value("${amazon.aws.secretkey}")
	private String secretKey;

	@Bean
	public AmazonDynamoDB amazonDynamoDB() {
		AmazonDynamoDB dynamoDB = new AmazonDynamoDBClient(amazonAWSCredentials());

		if (!StringUtils.isNullOrEmpty(dBEndpoint)) {
			dynamoDB.setEndpoint(dBEndpoint);
		}

		return dynamoDB;
	}

	@Bean
	public AWSCredentials amazonAWSCredentials() {
		return new BasicAWSCredentials(accessKey, secretKey);
	}
}

Select Operation

public String findAll() {
		String result = "";
		Iterable<Customer> customers = repository.findAll();

		for (Customer cust : customers) {
			result += cust.toString() + "<br>";
		}

		return result;
	}

Insert Operation

public String save() {
		// save a single Customer
		repository.save(new Customer("JSA-1", "Jack", "Smith"));

}

Delete Operation

public String delete() {
		repository.delete(new Customer("JSA-1", "Jack", "Smith"));
		repository.deleteAll();
		return "Done";
	}

Known Limitations

Client is created as unknown, if the name is not retrieved from the properties file or if the name is not be resolved.