/**
* Adds the given value to the embeddeds. Will skip doing so if the value is {@literal null} or
* the content of a {@link Resource} is {@literal null}.
*
* @param source can be {@literal null}.
*/
public void add(Object source) {
EmbeddedWrapper wrapper = wrappers.wrap(source);
if (wrapper == null) {
return;
}
String collectionRel = getDefaultedRelFor(wrapper, true);
String collectionOrItemRel = collectionRel;
if (!embeddeds.containsKey(collectionRel)) {
collectionOrItemRel = getDefaultedRelFor(wrapper, wrapper.isCollectionValue());
}
Object currentValue = embeddeds.get(collectionOrItemRel);
Object value = wrapper.getValue();
if (currentValue == null && !wrapper.isCollectionValue()) {
embeddeds.put(collectionOrItemRel, value);
return;
}
List<Object> list = new ArrayList<Object>();
list.addAll(asCollection(currentValue));
list.addAll(asCollection(wrapper.getValue()));
embeddeds.remove(collectionOrItemRel);
embeddeds.put(collectionRel, list);
}
private String getDefaultedRelFor(EmbeddedWrapper wrapper, boolean forCollection) {
String valueRel = wrapper.getRel();
if (StringUtils.hasText(valueRel)) {
return valueRel;
}
if (provider == null) {
return DEFAULT_REL;
}
Class<?> type = wrapper.getRelTargetType();
if (type == null) {
throw new IllegalStateException(String.format(INVALID_EMBEDDED_WRAPPER, wrapper));
}
String rel =
forCollection
? provider.getCollectionResourceRelFor(type)
: provider.getItemResourceRelFor(type);
if (curieProvider != null) {
rel = curieProvider.getNamespacedRelFor(rel);
}
return rel == null ? DEFAULT_REL : rel;
}