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
| Library | Supported? | |
|---|---|---|
| DynamoDBCrudRepository |  | |
| DynamoDBPagingAndSortingRepository | | |
Supported Operations
| Operations | Method Supported |
|---|---|
| Insert | |
| Select | |
| Delete |
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 |
|
useSelectLink |
| |
| useDeleteLink |
|
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
@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.