Is sorting supported?

I use PagingAndSortingRepository. And I try to get pageable parameter by request like this:

@GetMapping("/find")
public Page<Data> find(@PageableDefault(size = Integer.MAX_VALUE, sort = "timestamp") final Pageable pageable) {
	return dataRepository.findAll(pageable);
}

But when I try to use Page<Data> findAll(Pageable pageable) I catch UnsupportedOperationException: “Sorting not supported for find all scan operations”.

Is there any way to sort data? Thanks!

[yoga-guptha]

I have a table with id

	@DynamoDBHashKey(attributeName = "id")
	@DynamoDBAutoGeneratedKey
	private String id;

And global secondary index with projection type ‘key only’

	@DynamoDBAttribute
	@DynamoDBIndexHashKey(globalSecondaryIndexName = TENANT_ID_INDEX_NAME)
	private String tenantId;

	@DynamoDBAttribute
	@DynamoDBTyped(DynamoDBMapperFieldModel.DynamoDBAttributeType.N)
	@DynamoDBTypeConverted(converter = DynamoDbInstantConverter.class)
	@DynamoDBIndexRangeKey(globalSecondaryIndexNames = TENANT_ID_INDEX_NAME)
	private Instant creationTimestamp;

Also I have repository method findByTenantIdOrderByCreationTimestampAsc(String tenantId, Pageable pageable); Search and sorting work well.

Now I need have folow method findByTenantIdAndExpirationDateGreaterThanOrderByCreationTimestampAsc(String tenantId, long expirationDate, Pageable pageable)

I tried to create second global secondary index by expirationDate and creationTimestamp. But I caught an exception: java.lang.UnsupportedOperationException: Sort not supported for scan expressions

I tried modify first global secondary index. I setted projection type as ‘include’ and set expirationDate as non key attribut. But I caught the same exception.

How can I implement needed behavior?

Many thanks for considering my request!

Hi May I know how did you fix this scenario, I have the same case Can you provide your approach It would helpful to me a lot Thanks.

[gauravbrills]

Ya I also observed the use of @EnableScan @EnableScanCount Page<contact> findAll(Pageable pageable); fails now which used to work in older version . Is it cause now the default sort enum is coming as UNSORTED …

this leads to the exception for the sorting check

“Sorting not supported for find all scan operations”

I guess we should put a UNSORTED check here or something likewise .

`@Override public Page<T> findAll(Pageable pageable) {

	if (pageable.getSort() != null) {
		throw new UnsupportedOperationException("Sorting not supported for find all scan operations");
	}`