2 * Copyright (c) 2023 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.mdsal.binding.dom.adapter;
10 import static java.util.Objects.requireNonNull;
12 import java.util.List;
13 import org.eclipse.jdt.annotation.NonNull;
14 import org.opendaylight.mdsal.binding.api.DataListener;
15 import org.opendaylight.mdsal.binding.dom.codec.api.BindingAugmentationCodecTreeNode;
16 import org.opendaylight.mdsal.binding.dom.codec.api.BindingDataObjectCodecTreeNode;
17 import org.opendaylight.mdsal.dom.api.DOMDataTreeChangeListener;
18 import org.opendaylight.yangtools.yang.binding.DataObject;
19 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
20 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
21 import org.opendaylight.yangtools.yang.data.tree.api.DataTreeCandidate;
23 final class BindingDOMDataListenerAdapter<T extends DataObject> implements DOMDataTreeChangeListener {
24 private final AdapterContext adapterContext;
25 private final DataListener<T> listener;
27 BindingDOMDataListenerAdapter(final AdapterContext adapterContext, final DataListener<T> listener) {
28 this.adapterContext = requireNonNull(adapterContext);
29 this.listener = requireNonNull(listener);
33 public void onDataTreeChanged(final List<DataTreeCandidate> changes) {
34 final var last = changes.get(changes.size() - 1);
35 final var after = last.getRootNode().dataAfter();
36 listener.dataChangedTo(after == null ? null : deserialize(last.getRootPath(), after));
40 public void onInitialData() {
41 listener.dataChangedTo(null);
44 @SuppressWarnings("unchecked")
45 private T deserialize(final YangInstanceIdentifier path, final @NonNull NormalizedNode data) {
46 final var serializer = adapterContext.currentSerializer();
47 final var codec = serializer.getSubtreeCodec(serializer.coerceInstanceIdentifier(path));
48 if (codec instanceof BindingDataObjectCodecTreeNode<?> dataObject) {
49 return (T) dataObject.deserialize(data);
50 } else if (codec instanceof BindingAugmentationCodecTreeNode<?> augmentation) {
51 return (T) augmentation.filterFrom(data);
53 throw new IllegalStateException("Unhandled codec " + codec);