// TODO: Remove method parameter, which is unused
protected SortedMap<Key<?>, Binding<?>> getPolymorphicAdapterMapBindings(
final Class<?> adaptableType, final Method method, final AdapterMap methodAnnotation) {
// find available keys
final Map<Key<?>, Binding<?>> allBindings = injector.getAllBindings();
// IMPORTANT: use a sorted map, where keys are sorted according to
// hierarchy of annotation types (so we have polymorphic injection)
final SortedMap<Key<?>, Binding<?>> polymorphicBindings =
new TreeMap<Key<?>, Binding<?>>(
new Comparator<Key<?>>() {
@Override
public int compare(final Key<?> o1, final Key<?> o2) {
if (!AdapterMap.class.equals(o1.getAnnotationType())
|| !AdapterMap.class.equals(o2.getAnnotationType())) {
throw new IllegalArgumentException(
"Can only compare keys with AdapterMap annotations");
}
final AdapterMap a1 = (AdapterMap) o1.getAnnotation();
final AdapterMap a2 = (AdapterMap) o2.getAnnotation();
if (a1.adaptableType().equals(a2.adaptableType())) {
return 0;
} else if (a1.adaptableType().isAssignableFrom(a2.adaptableType())) {
return -1;
} else {
return 1;
}
}
});
for (final Key<?> key : allBindings.keySet()) {
if ((key.getAnnotationType() != null) && AdapterMap.class.equals(key.getAnnotationType())) {
final AdapterMap keyAnnotation = (AdapterMap) key.getAnnotation();
// Guice will already have injected all bindings where the
// adaptableType used in the method annotation is the same as
// the one used in the key annotation.
if (!methodAnnotation.adaptableType().equals(keyAnnotation.adaptableType())
/*
* The annotation in the binding refers to a true
* super-type of instance runtime type (check, because
* if the type is the same, the default injector will
* already inject the values) IMPORTANT: we use
* 'adaptableType' instead of 'methodAnnotation
* .adaptableType()' here, because the runtime type of
* the to be injected IAdaptable is relevant
*/
&& keyAnnotation.adaptableType().isAssignableFrom(adaptableType)) {
// System.out.println("Applying binding for " +
// keyAnnotation.value() + " to " + type +
// " as subtype of " + methodAnnotation.value());
polymorphicBindings.put(key, allBindings.get(key));
}
}
}
return polymorphicBindings;
}
/**
* Computes a canonical {@link Qualifier} annotation for the given binding {@link Key}.
*
* @param key The key to qualify
* @return Qualifier for the key
*/
static final Annotation qualify(final Key<?> key) {
if (key instanceof WildcardKey) {
final Annotation qualifier = ((WildcardKey) key).getQualifier();
return null != qualifier ? qualifier : DEFAULT_QUALIFIER;
}
return null != key.getAnnotationType() ? key.getAnnotation() : DEFAULT_QUALIFIER;
}
@Override
final Annotation qualifies(final Key<?> requirement, final Binding<?> binding) {
final Class<? extends Annotation> markerType = requirement.getAnnotationType();
final Annotation qualifier = qualify(binding.getKey());
if (markerType.isInstance(qualifier)) {
return qualifier;
}
final Class<?> implementation = binding.acceptTargetVisitor(ImplementationVisitor.THIS);
return null != implementation ? implementation.getAnnotation(markerType) : null;
}
/**
* Selects the appropriate qualifying strategy for the given requirement {@link Key}.
*
* @param key The requirement key
* @return Qualifying strategy
*/
static final QualifyingStrategy selectFor(final Key<?> key) {
final Class<?> qualifierType = key.getAnnotationType();
if (null == qualifierType) {
return QualifyingStrategy.UNRESTRICTED;
}
if (Named.class == qualifierType) {
return key.hasAttributes()
? QualifyingStrategy.NAMED_WITH_ATTRIBUTES
: QualifyingStrategy.NAMED;
}
return key.hasAttributes()
? QualifyingStrategy.MARKED_WITH_ATTRIBUTES
: QualifyingStrategy.MARKED;
}
