/**
* Returns a collection of composite sniffers that recognized some parts of the passed archive as
* components their container handle.
*
* <p>If no sniffer recognize the passed archive, an empty collection is returned.
*
* @param context deployment context
* @return possibly empty collection of sniffers that handle the passed archive.
*/
public Collection<CompositeSniffer> getCompositeSniffers(DeploymentContext context) {
// it is important to keep an ordered sequence here to keep sniffers
// in their natural order.
List<CompositeSniffer> appSniffers =
getApplicableSniffers(context, getCompositeSniffers(), false);
// call handles method of the sniffers
for (CompositeSniffer sniffer : getCompositeSniffers()) {
if (!appSniffers.contains(sniffer) && sniffer.handles(context)) {
appSniffers.add(sniffer);
}
}
return appSniffers;
}
public Collection<Sniffer> getSniffers(DeploymentContext context, List<URI> uris, Types types) {
// it is important to keep an ordered sequence here to keep sniffers
// in their natural order.
List<Sniffer> regularSniffers = new ArrayList<Sniffer>();
for (Sniffer sniffer : getSniffers()) {
if (!(sniffer instanceof CompositeSniffer)) regularSniffers.add(sniffer);
}
// scan for registered annotations and retrieve applicable sniffers
List<Sniffer> appSniffers = this.getApplicableSniffers(uris, types, regularSniffers, true);
// call handles method of the sniffers
for (Sniffer sniffer : regularSniffers) {
if (!appSniffers.contains(sniffer) && sniffer.handles(context)) {
appSniffers.add(sniffer);
}
}
return appSniffers;
}
/**
* Returns all the presently registered sniffers
*
* @return Collection (possibly empty but never null) of Sniffer
*/
public Collection<Sniffer> getSniffers() {
// this is a little bit of a hack, sniffers are now ordered by their names
// which is useful since connector is before ejb which is before web so if
// a standalone module happens to implement the three types of components,
// they will be naturally ordered correctly. We might want to revisit this
// later and formalize the ordering of sniffers. The hard thing as usual
// is that sniffers are highly pluggable so you never know which sniffers
// set you are working with depending on the distribution
List<Sniffer> sniffers = new ArrayList<Sniffer>();
sniffers.addAll(habitat.getAllByContract(Sniffer.class));
Collections.sort(
sniffers,
new Comparator<Sniffer>() {
public int compare(Sniffer o1, Sniffer o2) {
return o1.getModuleType().compareTo(o2.getModuleType());
}
});
return sniffers;
}
private <T extends Sniffer> List<T> getApplicableSniffers(
List<URI> uris, Types types, Collection<T> sniffers, boolean checkPath) {
if (sniffers == null || sniffers.isEmpty()) {
return Collections.emptyList();
}
List<T> result = new ArrayList<T>();
for (T sniffer : sniffers) {
Class<? extends Annotation>[] annotations = sniffer.getAnnotationTypes();
if (annotations == null) continue;
for (Class<? extends Annotation> annotationType : annotations) {
if (types != null) {
Type type = types.getBy(annotationType.getName());
if (type instanceof AnnotationType) {
Collection<AnnotatedElement> elements = ((AnnotationType) type).allAnnotatedTypes();
for (AnnotatedElement element : elements) {
if (checkPath) {
Type t =
(element instanceof Member
? ((Member) element).getDeclaringType()
: (Type) element);
if (t.wasDefinedIn(uris)) {
result.add(sniffer);
break;
}
} else {
result.add(sniffer);
break;
}
}
}
}
}
}
return result;
}