/**
* Apply changes to the underlying adapter (possibly returning a new adapter).
*
* @return adapter, which may be different from the original (if a {@link
* ViewModelFacet#isCloneable(Object) cloneable} view model, for example.
*/
public ObjectAdapter apply() {
ObjectAdapter adapter = getObjectAdapterMemento().getObjectAdapter(ConcurrencyChecking.CHECK);
for (final ScalarModel scalarModel : propertyScalarModels.values()) {
final OneToOneAssociation property = scalarModel.getPropertyMemento().getProperty();
//
// previously there was a guard here to only apply changes provided:
//
// property.containsDoOpFacet(NotPersistedFacet.class) == null
//
// however, that logic is wrong; although a property may not be directly
// persisted so far as JDO is concerned, it may be indirectly persisted
// as the result of business logic in the setter.
//
// for example, see ExampleTaggableEntity (in isisaddons-module-tags).
//
//
// on the other hand, we mustn't attempt to apply changes for disabled properties...
// even if the property is persisted (it might be written to by an action), it is never
// updated by
// an edit.
//
// Fundamentally, then, any non-disabled property (whether persisted or not) should be updated
// in the
// Isis runtime.
//
if (property.containsDoOpFacet(DisabledFacet.class)) {
// skip, as per comments above
continue;
}
final ObjectAdapter associate = scalarModel.getObject();
property.set(adapter, associate, InteractionInitiatedBy.USER);
}
final ViewModelFacet recreatableObjectFacet =
adapter.getSpecification().getFacet(ViewModelFacet.class);
if (recreatableObjectFacet != null) {
final Object viewModel = adapter.getObject();
final boolean cloneable = recreatableObjectFacet.isCloneable(viewModel);
if (cloneable) {
final Object newViewModel = recreatableObjectFacet.clone(viewModel);
adapter = getAdapterManager().adapterFor(newViewModel);
}
}
getObjectAdapterMemento().setAdapter(adapter);
toViewMode();
return adapter;
}
