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.Nullable;
14 import org.opendaylight.mdsal.binding.api.DataChangeListener;
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.binding.dom.codec.api.CommonDataObjectCodecTreeNode;
18 import org.opendaylight.mdsal.dom.api.DOMDataTreeChangeListener;
19 import org.opendaylight.yangtools.yang.binding.DataObject;
20 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
21 import org.opendaylight.yangtools.yang.data.tree.api.DataTreeCandidate;
23 final class BindingDOMDataChangeListenerAdapter<T extends DataObject> implements DOMDataTreeChangeListener {
24 private final AdapterContext adapterContext;
25 private final DataChangeListener<T> listener;
27 BindingDOMDataChangeListenerAdapter(final AdapterContext adapterContext, final DataChangeListener<T> listener) {
28 this.adapterContext = requireNonNull(adapterContext);
29 this.listener = requireNonNull(listener);
33 public void onDataTreeChanged(final List<DataTreeCandidate> changes) {
34 final var first = changes.get(0);
35 final var serializer = adapterContext.currentSerializer();
36 final var codec = serializer.getSubtreeCodec(serializer.coerceInstanceIdentifier(first.getRootPath()));
38 listener.dataChanged(deserialize(codec, first.getRootNode().dataBefore()),
39 deserialize(codec, changes.get(changes.size() - 1).getRootNode().dataAfter()));
43 public void onInitialData() {
44 listener.dataChanged(null, null);
47 @SuppressWarnings("unchecked")
48 private @Nullable T deserialize(final CommonDataObjectCodecTreeNode<?> codec, final NormalizedNode data) {
51 } else if (codec instanceof BindingDataObjectCodecTreeNode<?> dataObject) {
52 return (T) dataObject.deserialize(data);
53 } else if (codec instanceof BindingAugmentationCodecTreeNode<?> augmentation) {
54 return (T) augmentation.filterFrom(data);
56 throw new IllegalStateException("Unhandled codec " + codec);