+
+ /**
+ *
+ * Ensures list parent if item is list, otherwise noop.
+ *
+ * <p>
+ * One of properties of binding specification is that it is imposible
+ * to represent list as a whole and thus it is impossible to write
+ * empty variation of MapNode without creating parent node, with
+ * empty list.
+ *
+ * <p>
+ * This actually makes writes such as
+ * <pre>
+ * put("Nodes", new NodesBuilder().build());
+ * put("Nodes/Node[key]", new NodeBuilder().setKey("key").build());
+ * </pre>
+ * To result in three DOM operations:
+ * <pre>
+ * put("/nodes",domNodes);
+ * merge("/nodes/node",domNodeList);
+ * put("/nodes/node/node[key]",domNode);
+ * </pre>
+ *
+ *
+ * In order to allow that to be inserted if necessary, if we know
+ * item is list item, we will try to merge empty MapNode or OrderedNodeMap
+ * to ensure list exists.
+ *
+ * @param store Data Store type
+ * @param path Path to data (Binding Aware)
+ * @param normalized Normalized version of data to be written
+ */
+ private void ensureListParentIfNeeded(final LogicalDatastoreType store, final InstanceIdentifier<?> path,
+ final Entry<org.opendaylight.yangtools.yang.data.api.InstanceIdentifier, NormalizedNode<?, ?>> normalized) {
+ if(Identifiable.class.isAssignableFrom(path.getTargetType())) {
+ org.opendaylight.yangtools.yang.data.api.InstanceIdentifier parentMapPath = getParent(normalized.getKey()).get();
+ NormalizedNode<?, ?> emptyParent = getCodec().getDefaultNodeFor(parentMapPath);
+ getDelegate().merge(store, parentMapPath, emptyParent);
+ }
+
+ }
+
+ // FIXME (should be probaly part of InstanceIdentifier)
+ protected static Optional<org.opendaylight.yangtools.yang.data.api.InstanceIdentifier> getParent(
+ final org.opendaylight.yangtools.yang.data.api.InstanceIdentifier child) {
+
+ Iterable<PathArgument> mapEntryItemPath = child.getPathArguments();
+ int parentPathSize = Iterables.size(mapEntryItemPath) - 1;
+ if(parentPathSize > 1) {
+ return Optional.of(org.opendaylight.yangtools.yang.data.api.InstanceIdentifier.create(Iterables.limit(mapEntryItemPath, parentPathSize)));
+ } else if(parentPathSize == 0) {
+ return Optional.of(org.opendaylight.yangtools.yang.data.api.InstanceIdentifier.create(Collections.<PathArgument>emptyList()));
+ } else {
+ return Optional.absent();
+ }
+ }
+
Code Review / controller.git / commitdiff