2 * Copyright (c) 2018 Pantheon Technologies, 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.codec.spi;
10 import static java.util.Objects.requireNonNull;
12 import com.google.common.annotations.Beta;
13 import com.google.common.collect.ForwardingObject;
14 import java.util.Collection;
15 import java.util.Optional;
16 import org.checkerframework.checker.lock.qual.GuardedBy;
17 import org.eclipse.jdt.annotation.NonNull;
18 import org.eclipse.jdt.annotation.Nullable;
19 import org.opendaylight.mdsal.binding.dom.codec.api.BindingLazyContainerNode;
20 import org.opendaylight.yangtools.yang.binding.DataObject;
21 import org.opendaylight.yangtools.yang.common.QName;
22 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.NodeIdentifier;
23 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.PathArgument;
24 import org.opendaylight.yangtools.yang.data.api.schema.ContainerNode;
25 import org.opendaylight.yangtools.yang.data.api.schema.DataContainerChild;
28 * A {@link ContainerNode} backed by a binding {@link DataObject}, with lazy instantiation of the ContainerNode view.
29 * This class is thread-safe.
31 * @param <T> Binding DataObject type
32 * @author Robert Varga
35 public abstract class AbstractBindingLazyContainerNode<T extends DataObject, C> extends ForwardingObject
36 implements BindingLazyContainerNode<T> {
37 private final @NonNull NodeIdentifier identifier;
38 private final @NonNull T bindingData;
40 private volatile @Nullable ContainerNode delegate;
42 private @Nullable C context;
44 protected AbstractBindingLazyContainerNode(final @NonNull NodeIdentifier identifier, final @NonNull T bindingData,
46 this.identifier = requireNonNull(identifier);
47 this.bindingData = requireNonNull(bindingData);
48 this.context = context;
52 public final @NonNull T getDataObject() {
57 public final @NonNull NodeIdentifier getIdentifier() {
62 public final QName getNodeType() {
63 return identifier.getNodeType();
67 public final ContainerNode getDelegate() {
72 public Collection<DataContainerChild<? extends PathArgument, ?>> getValue() {
73 return delegate().getValue();
77 public Optional<DataContainerChild<? extends PathArgument, ?>> getChild(final PathArgument child) {
78 return delegate().getChild(child);
82 public int hashCode() {
83 return delegate().hashCode();
87 public boolean equals(final @Nullable Object obj) {
91 if (!(obj instanceof ContainerNode)) {
94 final ContainerNode other = (ContainerNode) obj;
95 return delegate().equals(other);
99 protected final @NonNull ContainerNode delegate() {
100 ContainerNode local = delegate;
102 synchronized (this) {
105 local = delegate = requireNonNull(computeContainerNode(context));
115 protected abstract @NonNull ContainerNode computeContainerNode(C context);