private boolean patch(Data<Resource> data, RequestScope requestScope) {
boolean isUpdated;
if (relationshipType.isToMany()) {
Collection<Resource> resources = data.get();
if (resources == null) {
return false;
}
if (!resources.isEmpty()) {
isUpdated =
record.updateRelation(
relationshipName,
new Relationship(null, new Data<>(resources)).toPersistentResources(requestScope));
} else {
isUpdated = record.clearRelation(relationshipName);
}
} else if (relationshipType.isToOne()) {
Resource resource = data.get().iterator().next();
if (resource != null) {
isUpdated =
record.updateRelation(
relationshipName,
new Relationship(null, new Data<>(resource)).toPersistentResources(requestScope));
} else {
isUpdated = record.clearRelation(relationshipName);
}
} else {
throw new IllegalStateException("Bad relationship type");
}
return isUpdated;
}
