/**
* expand super types after scanning, for super types that were not scanned. this is helpful in
* finding the transitive closure without scanning all 3rd party dependencies. it uses {@link
* ReflectionUtils#getSuperTypes(Class)}.
*
* <p>for example, for classes A,B,C where A supertype of B, B supertype of C:
*
* <ul>
* <li>if scanning C resulted in B (B->C in store), but A was not scanned (although A supertype
* of B) - then getSubTypes(A) will not return C
* <li>if expanding supertypes, B will be expanded with A (A->B in store) - then getSubTypes(A)
* will return C
* </ul>
*/
public void expandSuperTypes() {
if (store.keySet().contains(index(SubTypesScanner.class))) {
Multimap<String, String> mmap = store.get(index(SubTypesScanner.class));
Sets.SetView<String> keys = Sets.difference(mmap.keySet(), Sets.newHashSet(mmap.values()));
Multimap<String, String> expand = HashMultimap.create();
for (String key : keys) {
expandSupertypes(expand, key, forName(key));
}
mmap.putAll(expand);
}
}
/**
* get types annotated with a given annotation, both classes and annotations, including annotation
* member values matching
*
* <p>{@link Inherited} is honored according to given honorInherited
*
* <p>depends on TypeAnnotationsScanner configured
*/
public Set<Class<?>> getTypesAnnotatedWith(final Annotation annotation, boolean honorInherited) {
Iterable<String> annotated =
store.get(index(TypeAnnotationsScanner.class), annotation.annotationType().getName());
Iterable<Class<?>> filter = filter(forNames(annotated, loaders()), withAnnotation(annotation));
Iterable<String> classes =
getAllAnnotated(
names(filter),
annotation.annotationType().isAnnotationPresent(Inherited.class),
honorInherited);
return Sets.newHashSet(
concat(filter, forNames(filter(classes, not(in(Sets.newHashSet(annotated)))), loaders())));
}
/**
* get all fields annotated with a given annotation
*
* <p>depends on FieldAnnotationsScanner configured
*/
public Set<Field> getFieldsAnnotatedWith(final Class<? extends Annotation> annotation) {
final Set<Field> result = Sets.newHashSet();
for (String annotated : store.get(index(FieldAnnotationsScanner.class), annotation.getName())) {
result.add(getFieldFromString(annotated, loaders()));
}
return result;
}
/**
* get types annotated with a given annotation, both classes and annotations
*
* <p>{@link Inherited} is honored according to given honorInherited.
*
* <p>when honoring @Inherited, meta-annotation should only effect annotated super classes and
* it's sub types
*
* <p>when not honoring @Inherited, meta annotation effects all subtypes, including annotations
* interfaces and classes
*
* <p><i>Note that this (@Inherited) meta-annotation type has no effect if the annotated type is
* used for anything other then a class. Also, this meta-annotation causes annotations to be
* inherited only from superclasses; annotations on implemented interfaces have no effect.</i>
*
* <p>depends on TypeAnnotationsScanner and SubTypesScanner configured
*/
public Set<Class<?>> getTypesAnnotatedWith(
final Class<? extends Annotation> annotation, boolean honorInherited) {
Iterable<String> annotated =
store.get(index(TypeAnnotationsScanner.class), annotation.getName());
Iterable<String> classes =
getAllAnnotated(annotated, annotation.isAnnotationPresent(Inherited.class), honorInherited);
return Sets.newHashSet(concat(forNames(annotated, loaders()), forNames(classes, loaders())));
}
/**
* get all types scanned. this is effectively similar to getting all subtypes of Object.
*
* <p>depends on SubTypesScanner configured with {@code SubTypesScanner(false)}, otherwise {@code
* ReflectionsException} is thrown
*
* <p><i>note using this might be a bad practice. it is better to get types matching some
* criteria, such as {@link #getSubTypesOf(Class)} or {@link #getTypesAnnotatedWith(Class)}</i>
*
* @return Set of String, and not of Class, in order to avoid definition of all types in PermGen
*/
public Set<String> getAllTypes() {
Set<String> allTypes =
Sets.newHashSet(store.getAll(index(SubTypesScanner.class), Object.class.getName()));
if (allTypes.isEmpty()) {
throw new ReflectionsException(
"Couldn't find subtypes of Object. "
+ "Make sure SubTypesScanner initialized to include Object class - new SubTypesScanner(false)");
}
return allTypes;
}
/**
* get resources relative paths where simple name (key) matches given namePredicate
*
* <p>depends on ResourcesScanner configured
*/
public Set<String> getResources(final Predicate<String> namePredicate) {
Iterable<String> resources =
Iterables.filter(store.get(index(ResourcesScanner.class)).keySet(), namePredicate);
return Sets.newHashSet(store.get(index(ResourcesScanner.class), resources));
}
/**
* gets all sub types in hierarchy of a given type
*
* <p>depends on SubTypesScanner configured
*/
public <T> Set<Class<? extends T>> getSubTypesOf(final Class<T> type) {
return Sets.newHashSet(
ReflectionUtils.<T>forNames(
store.getAll(index(SubTypesScanner.class), Arrays.asList(type.getName())), loaders()));
}
