2 * Copyright (c) 2019 PANTHEON.tech, s.r.o. and others. All rights reserved.
4 * This program and the accompanying materials are made available under the
5 * terms of the Eclipse Public License v1.0 which accompanies this distribution,
6 * and is available at http://www.eclipse.org/legal/epl-v10.html
8 package org.opendaylight.yangtools.yang.data.api.schema;
10 import com.google.common.annotations.Beta;
11 import com.google.common.collect.ImmutableMap;
13 import org.eclipse.jdt.annotation.NonNull;
14 import org.opendaylight.yangtools.concepts.Identifiable;
15 import org.opendaylight.yangtools.concepts.Immutable;
16 import org.opendaylight.yangtools.yang.common.QName;
17 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.PathArgument;
20 * RFC7952 metadata counterpart to a {@link NormalizedNode}. This interface is meant to be used as a companion to
21 * a NormalizedNode instance, hence it does not support iterating over its structure like it is possible with
22 * {@link NormalizedNode#body()}. Children may be inquired through {@link #getChildren()}.
25 * This model of metadata <em>does not</em> have the RFC7952 restriction on metadata attachment to {@code list}s and
26 * {@code leaf-list}s because NormalizedNode data model has {@link LeafSetNode}, {@link MapNode} and
27 * {@link UnkeyedListNode} to which metadata can be attached.
29 * @author Robert Varga
32 public interface NormalizedMetadata extends Identifiable<PathArgument>, Immutable {
34 * Return the set of annotations defined in this metadata node. Values are expected to be effectively-immutable
35 * scalar types, like {@link String}s, {@link Number}s and similar. The map must also be effectively-immutable.
37 * @return The set of annotations attached to the corresponding data node.
39 @NonNull Map<QName, Object> getAnnotations();
42 * Returns child nodes. Default implementation returns an empty immutable map.
44 * @return Child metadata nodes.
46 default @NonNull Map<PathArgument, NormalizedMetadata> getChildren() {
47 return ImmutableMap.of();