JAXB-JSON-LD for Jackson is a binding of JAXB-JSON-LD for Jackson.
The core implementation of JAXB-JSON-LD can be found at https://github.com/kbss-cvut/jaxb-jsonld.
More info can be found at https://kbss.felk.cvut.cz/web/portal/jaxb-jsonld.
JAXB-JSON-LD is based on annotations from JOPA, which enable POJO attributes to be mapped to ontological constructs (i.e. to object, data or annotation properties) and Java classes to ontological classes.
Use @OWLDataProperty to annotate data fields and @OWLObjectProperty to annotate fields referencing other mapped entities.
To integrate the library with Jackson, register a cz.cvut.kbss.jsonld.jackson.JsonLdModule in Jackson's ObjectMapper like this:
objectMapper.registerModule(new JsonLdModule())
and you should be good to go. See the JsonLdSerializionTest for examples.
See https://github.com/kbss-cvut/jopa-examples/tree/master/jsonld for an executable example of JAXB JSON-LD for Jackson in action.
The serializer's output has been verified to be a valid JSON-LD and is parsable by Java's JSON-LD reference implementation jsonld-java.
The output is basically a context-less compacted JSON-LD, which uses full IRIs for attribute names.
Since we are using jsonld-java to first process the incoming JSON-LD, it does not matter in which form (expanded, framed, flattened) the input is.
There are two ways to get JAXB-JSON-LD for Jackson:
- Clone repository/download zip and build it with maven
- Use a Maven dependency from our maven repo at http://kbss.felk.cvut.cz/m2repo/