How to select a list of entities with a custom set of attributes via the Criteria API if the entity has an associated collection of other entities?

Question

Java

Hello. There is an entity in which one of the fields is a collection of other entities:

class UserEntity {
private Long id;
private String name;
private Set<GroupEntity> groups;
private byte[] avatar;
//....
}

It is necessary to get a list of these users via Criteria API, and not all fields need to be selected (one field must be excluded - avatar). But the field with the collection of entities must be included in the selection.
I searched on the Internet - I did not find it.

Answer 1

The question is not clear. If CriteriaApi can get a stream of arbitrary objects (UserEntity), then
you can always apply the map method to the stream and take only the required stream of fields.

.stream().map(userEntity -> userEntity.getAvatar)....