@Override
public Set<DefDescriptor<?>> find(DescriptorFilter matcher) {
final String filterKey = matcher.toString();
Set<DefRegistry<?>> registries = delegateRegistries.getRegistries(matcher);
Set<DefDescriptor<?>> matched = Sets.newHashSet();
for (DefRegistry<?> reg : registries) {
//
// This could be a little dangerous, but unless we force all of our
// registries to implement find, this is necessary.
//
if (reg.hasFind()) {
Set<DefDescriptor<?>> registryResults = null;
if (reg.isCacheable()) {
// cache results per registry
String cacheKey = filterKey + "|" + reg.toString();
registryResults = descriptorFilterCache.getIfPresent(cacheKey);
if (registryResults == null) {
registryResults = reg.find(matcher);
descriptorFilterCache.put(cacheKey, registryResults);
}
} else {
registryResults = reg.find(matcher);
}
matched.addAll(registryResults);
}
}
if (localDescs != null) {
for (DefDescriptor<? extends Definition> desc : localDescs) {
if (matcher.matchDescriptor(desc)) {
matched.add(desc);
}
}
}
return matched;
}
private boolean isCacheable(DefRegistry<?> reg) {
return useCache && reg.isCacheable();
}