2 * Copyright (c) 2015 Cisco Systems, Inc. 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 com.google.common.base.Preconditions;
11 import org.opendaylight.mdsal.binding.api.ClusteredDataTreeChangeListener;
12 import org.opendaylight.mdsal.binding.api.DataTreeChangeListener;
13 import org.opendaylight.mdsal.binding.api.DataTreeChangeService;
14 import org.opendaylight.mdsal.binding.api.DataTreeIdentifier;
15 import org.opendaylight.mdsal.dom.api.DOMDataTreeChangeService;
16 import org.opendaylight.mdsal.dom.api.DOMDataTreeIdentifier;
17 import org.opendaylight.yangtools.concepts.ListenerRegistration;
18 import org.opendaylight.yangtools.yang.binding.DataObject;
19 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
22 * Adapter exposing Binding {@link DataTreeChangeService} and wrapping
23 * {@link DOMDataTreeChangeService} and is responsible for translation
24 * and instantiation of {@link BindingDOMDataTreeChangeListenerAdapter}
28 * Each registered {@link DataTreeChangeListener} is wrapped using
29 * adapter and registered directly to DOM service.
31 final class BindingDOMDataTreeChangeServiceAdapter implements DataTreeChangeService {
33 private final BindingToNormalizedNodeCodec codec;
34 private final DOMDataTreeChangeService dataTreeChangeService;
36 private BindingDOMDataTreeChangeServiceAdapter(final BindingToNormalizedNodeCodec codec,
37 final DOMDataTreeChangeService dataTreeChangeService) {
38 this.codec = Preconditions.checkNotNull(codec);
39 this.dataTreeChangeService = Preconditions.checkNotNull(dataTreeChangeService);
42 static DataTreeChangeService create(final BindingToNormalizedNodeCodec codec,
43 final DOMDataTreeChangeService dataTreeChangeService) {
44 return new BindingDOMDataTreeChangeServiceAdapter(codec, dataTreeChangeService);
48 public <T extends DataObject, L extends DataTreeChangeListener<T>> ListenerRegistration<L>
49 registerDataTreeChangeListener(final DataTreeIdentifier<T> treeId, final L listener) {
50 final DOMDataTreeIdentifier domIdentifier = toDomTreeIdentifier(treeId);
52 @SuppressWarnings({ "rawtypes", "unchecked" })
53 final BindingDOMDataTreeChangeListenerAdapter<T> domListener =
54 listener instanceof ClusteredDataTreeChangeListener
55 ? new BindingClusteredDOMDataTreeChangeListenerAdapter<>(
56 codec, (ClusteredDataTreeChangeListener) listener, treeId.getDatastoreType())
57 : new BindingDOMDataTreeChangeListenerAdapter<>(codec, listener, treeId.getDatastoreType());
59 final ListenerRegistration<BindingDOMDataTreeChangeListenerAdapter<T>> domReg =
60 dataTreeChangeService.registerDataTreeChangeListener(domIdentifier, domListener);
61 return new BindingDataTreeChangeListenerRegistration<>(listener, domReg);
64 private DOMDataTreeIdentifier toDomTreeIdentifier(final DataTreeIdentifier<?> treeId) {
65 final YangInstanceIdentifier domPath = codec.toYangInstanceIdentifierBlocking(treeId.getRootIdentifier());
66 return new DOMDataTreeIdentifier(treeId.getDatastoreType(), domPath);