Let's say I have the following entity:
public class Employee {
private String name;
private Company company
}
And I have a String with the content below:
{
"name":"Joe",
"company": "http://localhost/companies/23"
}
Spring Data Rest is capable of converting this JSON to an Employee object out of the box, but to how convert it manually?
OK. I think I understand the problem now. Of course SDR has to have an ObjectMapper which is capable to convert the incoming JSON into an entity (including hateoas links), but it seems that's NOT the default ObjectMapper and it's not even exported as a Bean.
So I made some reverse-engineering and I think I've found what you need. Fortunately the ObjectMapper which is used internally has a public getter in the RepositoryRestMvcConfiguration class, so it can be used easily:
/**
* The Jackson {@link ObjectMapper} used internally.
*
* @return
*/
public ObjectMapper objectMapper() {
return mapper.get();
}
I think the following code will work:
@Autowired
RepositoryRestMvcConfiguration rrmc;
private <T> T readValue(String json, Class<T> type)
throws IOException, JsonParseException, JsonMappingException {
return rrmc.objectMapper().readValue(json, type);
}
@Aurowired
private final RepositoryInvokerFactory repositoryInvokerFactory;
private Object loadPropertyValue(Class<?> type, String href) {
String id = href.substring(href.lastIndexOf('/') + 1);
RepositoryInvoker invoker = repositoryInvokerFactory.getInvokerFor(type);
return invoker.invokeFindById(id).orElse(null);
}