Persistence of polymorphism relationships

[Victor M.]

Hello there,

in am inheritance structure like the following:

@RdfsClass("zoo:Animal")
@MappedSuperclass
public class Animal implements SupportsRdfId
{}

@Entity
@RdfsClass("zoo:Axolotl")
public class Axolotl extends
{}

I would like to persist relationships in OpenRDF Sesame such as zoo:Axolotl rdfs:subClassOf zoo:Animal or <AxolotlResource> rdf:type zoo:Animal. Is this supported by Empire RDF or manual declarations of such statements would be required?


Best regards,
Victor M.

[Michael Grove]

To read an individual into a bean, it *must* be of the type specified in the @RdfsClass annotation.  Whether that information is explicit or inferred does not matter.

Cheers,

Mike

 

Best regards,
Victor M.

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[Victor M.]

Oh, so if I persist an Axolotl instance into the database, no information that Axolotls are Animals or that this specific Axolotl instance is of type Animal will be persisted then.

[Michael Grove]

No.  Empire only stores explicit information.  it's the job of the database to infer information.

[Victor M.]

I see. Thank you very much. :)