/* @NonNull */
@Override
public Iterable<Pair<IStorage, IProject>> getStorages(/* @NonNull */ URI uri) {
List<Pair<IStorage, IProject>> result = newArrayListWithCapacity(1);
List<PackageFragmentRootData> packageFragmentRootDatas;
synchronized (cachedPackageFragmentRootData) {
packageFragmentRootDatas = newArrayList(cachedPackageFragmentRootData.values());
}
Iterator<PackageFragmentRootData> iterator = packageFragmentRootDatas.iterator();
while (iterator.hasNext()) {
PackageFragmentRootData data = iterator.next();
if (data.exists()) {
if (data.uriPrefix == null || uri.toString().startsWith(data.uriPrefix.toString())) {
IStorage storage = data.uri2Storage.get(uri);
if (storage != null) {
for (IPackageFragmentRoot root : data.associatedRoots.values()) {
result.add(Tuples.create(storage, root.getJavaProject().getProject()));
}
}
}
} else {
iterator.remove();
}
}
if (result.isEmpty() && uri.isArchive()) {
String authority = uri.authority();
authority = authority.substring(0, authority.length() - 1);
URI archiveURI = URI.createURI(authority);
if (archiveURI.isFile() || archiveURI.isPlatformResource()) {
IPath archivePath =
new Path(
archiveURI.isPlatformResource()
? archiveURI.toPlatformString(true)
: archiveURI.toFileString());
for (PackageFragmentRootData data : packageFragmentRootDatas) {
if (data.uriPrefix != null && archivePath.equals(data.getPath())) {
// prefixes have an empty last segment.
URI prefix =
data.uriPrefix.lastSegment().length() == 0
? data.uriPrefix.trimSegments(1)
: data.uriPrefix;
URI expectedURI = prefix.appendSegments(uri.segments());
IStorage storage = data.uri2Storage.get(expectedURI);
if (storage != null) {
for (IPackageFragmentRoot root : data.associatedRoots.values()) {
result.add(Tuples.create(storage, root.getJavaProject().getProject()));
}
}
}
}
}
}
return result;
}
@Override
public boolean isAffected(
Collection<Delta> deltas, IResourceDescription candidate, IResourceDescriptions context) {
Set<URI> outgoingReferences = descriptionUtils.collectOutgoingReferences(candidate);
if (!outgoingReferences.isEmpty()) {
for (IResourceDescription.Delta delta : deltas)
if (hasChanges(delta, candidate) && outgoingReferences.contains(delta.getUri()))
return true;
}
// this is a tradeoff - we could either check whether a given delta uri is contained
// in a reachable container and check for intersecting names afterwards, or we can do
// the other way round
// unfortunately there is no way to decide reliably which algorithm scales better
// note that this method is called for each description so we have something like a
// number of deltas x number of resources which is not really nice
List<IContainer> containers = null;
Collection<QualifiedName> importedNames = getImportedNames(candidate);
for (IResourceDescription.Delta delta : deltas) {
if (hasChanges(delta, candidate)) {
// not a java resource - delta's resource should be contained in a visible container
// as long as we did not delete the resource
URI uri = delta.getUri();
if ((uri.isPlatform() || uri.isArchive()) && delta.getNew() != null) {
if (containers == null)
containers = containerManager.getVisibleContainers(candidate, context);
boolean descriptionIsContained = false;
for (int i = 0; i < containers.size() && !descriptionIsContained; i++) {
descriptionIsContained = containers.get(i).hasResourceDescription(uri);
}
if (!descriptionIsContained) return false;
}
if (isAffected(importedNames, delta.getNew())
|| isAffected(importedNames, delta.getOld())) {
return true;
}
}
}
return false;
}
@Override
public boolean isApplicable(URI uri) {
return uri.isArchive();
}