+ public static final InstanceIdentifier append(final InstanceIdentifier parent, final PathArgument arg) {
+
+ return new InstanceIdentifier(ImmutableList.<PathArgument> builder().addAll(parent.getPath()).add(arg).build());
+ }
+
+ public static AsyncDataChangeEvent<InstanceIdentifier, NormalizedNode<?, ?>> initialChangeEvent(
+ final InstanceIdentifier path, final StoreMetadataNode data) {
+ return new InitialDataChangeEvent(path, data.getData());
+ }
+
+ @SuppressWarnings({ "unchecked", "rawtypes" })
+ public static <V> Function<Identifiable<V>, V> identifierExtractor() {
+ return (Function) EXTRACT_IDENTIFIER;
+ }
+
+ private static final class InitialDataChangeEvent implements
+ AsyncDataChangeEvent<InstanceIdentifier, NormalizedNode<?, ?>> {
+
+ private final ImmutableMap<InstanceIdentifier, NormalizedNode<?, ?>> payload;
+ private final NormalizedNode<?, ?> data;
+
+ public InitialDataChangeEvent(final InstanceIdentifier path, final NormalizedNode<?, ?> data) {
+ payload = ImmutableMap.<InstanceIdentifier, NormalizedNode<?, ?>> of(path, data);
+ this.data = data;
+ }
+
+ @Override
+ public Map<InstanceIdentifier, NormalizedNode<?, ?>> getCreatedData() {
+ return payload;
+ }
+
+ @Override
+ public Map<InstanceIdentifier, ? extends NormalizedNode<?, ?>> getOriginalData() {
+ return Collections.emptyMap();
+ }
+
+ @Override
+ public NormalizedNode<?, ?> getOriginalSubtree() {
+ return null;
+ }
+
+ @Override
+ public Set<InstanceIdentifier> getRemovedPaths() {
+ return Collections.emptySet();
+ }
+
+ @Override
+ public Map<InstanceIdentifier, NormalizedNode<?, ?>> getUpdatedData() {
+ return payload;
+ }
+
+ @Override
+ public NormalizedNode<?, ?> getUpdatedSubtree() {
+ return data;
+ }
+
+ }
+
+ public static <V> Set<V> toIdentifierSet(final Iterable<? extends Identifiable<V>> children) {
+ return FluentIterable.from(children).transform(StoreUtils.<V> identifierExtractor()).toSet();
+ }
+
+ public static String toStringTree(final StoreMetadataNode metaNode) {
+ StringBuilder builder = new StringBuilder();
+ toStringTree(builder, metaNode, 0);
+ return builder.toString();