Default values in entities are not used, potentially causes NullPointerExceptions

[cberes]

SDN does not respect default values set in entities. This differs from OGM's behavior.

For example, say you have an entity like this

@Getter
@Setter
@Node
public abstract class MyNode {
  @Property("name")
  private String name;

  @Property("active")
  private boolean active = true;

  @Property("age")
  private Integer age = 25;
}

And you create a new node without the active and age properties

CREATE (:MyNode {id: '123', name: 'Nikola Tesla'})

When you query for the node, active will be false and age will be null

MyNode found = myNodeRepository.findById("123").get();
if (!found.isActive()) {                // active is false but it should be true
  found.setAge(found.getAge() - 1);     // age is null: NullPointerException
}

As far as I know, this example has never worked correctly in SDN. Specifically I tried this with 6.3.1 and 6.2.0 and saw the same behavior.

However, this differs from OGM, which uses the default values set in an entity. The tests in this project would pass if run using OGM.

This seems similar to #2348

[michael-simons]

I tend to agree this is a bug.

[meistermeier]

I tend to agree with you and Michael. 🙂

[meistermeier]

Thanks for reporting this. This was something I had not realised before.
It is fixed now in 6.3.2-GH-2565-SNAPSHOT but will very certain get merged tomorrow into 6.2, 6.3 and main.