Null-pointer exception when the class is not mapped. [DATAREST-174]

Petar Tahchiev opened DATAREST-174 and commented

Hi guys,

here's an improvement to think about. I have a class called AbstractComponent, with a repository called AbstractComponentRepository. The AbstractComponent is a superclass for a lot of different components (like BannerComponent, SliderComponent, GooglemapComponent, etc..). Right now if I go to the url of my rest AbstractComponentRepository it throws a null-pointer exception because none of the components are of AbstractComponent class. So this code here:

		PersistentEntity<?, ?> entity = repositories.getPersistentEntity(instance.getClass());

		BeanWrapper<?, Object> wrapper = BeanWrapper.create(instance, null);
		Object id = wrapper.getProperty(entity.getIdProperty());

		return entityLinks.linkForSingleResource(entity.getType(), id).withSelfRel();

in PersistentEntityResourceAssembler will try to get a PersistentEntity by the class BannerComponent but it will return a null, and then further down we try to get the entity.getIdProperty() which throws the null-pointer. Maybe if the ```
repositories.getPersistentEntity

Affects: 2.0 M1 (Codd)

2 votes, 3 watchers