+
+ final Collection<SourceIdentifier> requiredSources = deviceSources.getRequiredSources();
+ final Collection<SourceIdentifier> missingSources = filterMissingSources(requiredSources);
+
+ capabilities.addUnresolvedCapabilities(getQNameFromSourceIdentifiers(missingSources),
+ UnavailableCapability.FailureReason.MissingSource);
+
+ requiredSources.removeAll(missingSources);
+ setUpSchema(requiredSources);
+ }
+
+ private Collection<SourceIdentifier> filterMissingSources(final Collection<SourceIdentifier> requiredSources) {
+
+ return requiredSources.parallelStream().filter(sourceIdentifier -> {
+ boolean remove = false;
+ try {
+ schemaRepository.getSchemaSource(sourceIdentifier, ASTSchemaSource.class).checkedGet();
+ } catch (SchemaSourceException e) {
+ remove = true;
+ }
+ return remove;
+ }).collect(Collectors.toList());