@Override
public Supplier<Pair<Integer, JsonNode>> handleGet(StateContext state) {
JsonApiDocument doc = new JsonApiDocument();
RequestScope requestScope = state.getRequestScope();
ObjectMapper mapper = requestScope.getMapper().getObjectMapper();
Optional<MultivaluedMap<String, String>> queryParams = requestScope.getQueryParams();
Map<String, Relationship> relationships = record.toResource().getRelationships();
Relationship relationship = null;
if (relationships != null) {
relationship = relationships.get(relationshipName);
}
// Handle valid relationship
if (relationship != null) {
// Set data
Data<Resource> data = relationship.getData();
doc.setData(data);
// Run include processor
DocumentProcessor includedProcessor = new IncludedProcessor();
includedProcessor.execute(doc, record, queryParams);
return () -> Pair.of(HttpStatus.SC_OK, mapper.convertValue(doc, JsonNode.class));
}
// Handle no data for relationship
if (relationshipType.isToMany()) {
doc.setData(new Data<>(new ArrayList<>()));
} else if (relationshipType.isToOne()) {
doc.setData(new Data<>((Resource) null));
} else {
throw new IllegalStateException("Failed to PATCH a relationship");
}
return () -> Pair.of(HttpStatus.SC_OK, mapper.convertValue(doc, JsonNode.class));
}
