@DynamoDBTable(tableName = "User")
public class User {

	private String id;
	private String firstName;
	private String lastName;

	public User() {
		// Default constructor is required by AWS DynamoDB SDK
	}

	public User(String firstName, String lastName) {
		this.firstName = firstName;
		this.lastName = lastName;
	}

	@DynamoDBHashKey
	@DynamoDBAutoGeneratedKey
	public String getId() {
		return id;
	}

	@DynamoDBAttribute
	public String getFirstName() {
		return firstName;
	}

	@DynamoDBAttribute
	public String getLastName() {
		return lastName;
	}

	//setter & hashCode & equals
}

@EnableScan
public interface UserRepository extends CrudRepository<User, String> {
  List<User> findByLastName(String lastName);
  List<User> findByFirstName(String firstName);
}

public interface PagingUserRepository extends PagingAndSortingRepository<User, String> {
	Page<User> findByLastName(String lastName, Pageable pageable);
	Page<User> findByFirstName(String firstName, Pageable pageable);

	@EnableScan
	@EnableScanCount
	Page<User> findAll(Pageable pageable);
}

@Configuration
@EnableDynamoDBRepositories(basePackageClasses = UserRepository.class)
public static class DynamoDBConfig {

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

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

	public AWSCredentialsProvider amazonAWSCredentialsProvider() {
		return new AWSStaticCredentialsProvider(amazonAWSCredentials());
	}

	@Bean
	public AWSCredentials amazonAWSCredentials() {
		return new BasicAWSCredentials(amazonAWSAccessKey, amazonAWSSecretKey);
	}

	@Bean
	public DynamoDBMapperConfig dynamoDBMapperConfig() {
		return DynamoDBMapperConfig.DEFAULT;
	}

	@Bean
	public DynamoDBMapper dynamoDBMapper(AmazonDynamoDB amazonDynamoDB, DynamoDBMapperConfig config) {
		return new DynamoDBMapper(amazonDynamoDB, config);
	}

	@Bean
	public AmazonDynamoDB amazonDynamoDB() {
		return AmazonDynamoDBClientBuilder.standard().withCredentials(amazonAWSCredentialsProvider())
				.withRegion(Regions.US_EAST_1).build();
	}
}