DynamoDB support for Spring Data source code

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

Supported Client Libraries

DynamoDBCrudRepository
DynamoDBPagingAndSortingRepository

Supported Operations

Operations

Method Supported

Insert

save
saveAll

Select

existsById
findById
findAll

Delete

delete
deleteById
deleteAllById
deleteAll

Objects

Icon	Description
	Java_DynamoDB_Client
	Java_DynamoDB_Table
	Java_Unknown_DynamoDB_Client
	Java_Unknown_DynamoDB_Table

Links

Links are created for transaction and function point needs:

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		existsById findById findAll
useDeleteLink		delete deleteById deleteAll deleteAllById

What results can you expect?

Once the analysis/snapshot generation is completed, you can view the results in the normal manner (for example via CAST Enlighten). Some examples are shown below.

DynamoDB Client with Java Configuration

DynamoDB Client

@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";
	}

Evolution

Better resolution for tables
Query Methods are supported
Query methods with @Query annotation are supported

Limitations

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

Page tree