/**
* Creates a Resolution object that holds a client value that represents the given domain value.
* The resolved client value will be assignable to {@code clientType}.
*/
private Resolution resolveClientValue(Object domainValue, Type clientType) {
if (domainValue == null) {
return new Resolution(null);
}
boolean anyType = clientType == null;
if (anyType) {
clientType = Object.class;
}
Class<?> assignableTo = TypeUtils.ensureBaseType(clientType);
ResolutionKey key = new ResolutionKey(domainValue, clientType);
Resolution previous = resolved.get(key);
if (previous != null && assignableTo.isInstance(previous.getClientObject())) {
return previous;
}
Class<?> returnClass = service.resolveClientType(domainValue.getClass(), assignableTo, true);
if (anyType) {
assignableTo = returnClass;
}
// Pass simple values through
if (ValueCodex.canDecode(returnClass)) {
return makeResolution(domainValue);
}
// Convert entities to EntityProxies or EntityProxyIds
boolean isProxy = BaseProxy.class.isAssignableFrom(returnClass);
boolean isId = EntityProxyId.class.isAssignableFrom(returnClass);
if (isProxy || isId) {
Class<? extends BaseProxy> proxyClass = returnClass.asSubclass(BaseProxy.class);
return resolveClientProxy(domainValue, proxyClass, key);
}
// Convert collections
if (Collection.class.isAssignableFrom(returnClass)) {
Collection<Object> accumulator;
if (List.class.isAssignableFrom(returnClass)) {
accumulator = new ArrayList<Object>();
} else if (Set.class.isAssignableFrom(returnClass)) {
accumulator = new HashSet<Object>();
} else {
throw new ReportableException("Unsupported collection type" + returnClass.getName());
}
Type elementType = TypeUtils.getSingleParameterization(Collection.class, clientType);
for (Object o : (Collection<?>) domainValue) {
accumulator.add(resolveClientValue(o, elementType).getClientObject());
}
return makeResolution(accumulator);
}
throw new ReportableException("Unsupported domain type " + returnClass.getCanonicalName());
}
@Override
public boolean visitReferenceProperty(
String propertyName, AutoBean<?> value, PropertyContext ctx) {
/*
* Send the property if the enclosing type is a ValueProxy, if the owner
* requested the property, or if the property is a list of values.
*/
Class<?> elementType =
ctx instanceof CollectionPropertyContext
? ((CollectionPropertyContext) ctx).getElementType()
: null;
boolean shouldSend =
isOwnerValueProxy
|| matchesPropertyRef(propertyRefs, propertyName)
|| elementType != null && ValueCodex.canDecode(elementType);
if (!shouldSend) {
return false;
}
// Call the getter
Object domainValue = service.getProperty(domainEntity, propertyName);
if (domainValue == null) {
return false;
}
// Turn the domain object into something usable on the client side
Type type;
if (elementType == null) {
type = ctx.getType();
} else {
type = new CollectionType(ctx.getType(), elementType);
}
Resolution resolution = resolveClientValue(domainValue, type);
addPathsToResolution(resolution, propertyName, propertyRefs);
ctx.set(resolution.getClientObject());
return false;
}