2 * Copyright (c) 2014 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.yangtools.yang.data.api.schema.tree.spi;
10 import java.util.Optional;
11 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.PathArgument;
12 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
13 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNodeContainer;
16 * A TreeNode capable of holding child nodes. The fact that any of the children
17 * changed is tracked by the subtree version.
19 abstract class AbstractContainerNode extends AbstractTreeNode {
20 protected AbstractContainerNode(final NormalizedNode<?, ?> data, final Version version) {
24 @SuppressWarnings("unchecked")
25 protected final NormalizedNodeContainer<?, PathArgument, NormalizedNode<?, ?>> castData() {
26 return (NormalizedNodeContainer<?, PathArgument, NormalizedNode<?, ?>>) getData();
29 protected final Optional<TreeNode> getChildFromData(final PathArgument childId) {
30 // We do not cache the instantiated node as it is dirt cheap
31 return Optional.ofNullable(getChildFromData(castData(), childId, getVersion()));
34 static TreeNode getChildFromData(final NormalizedNodeContainer<?, PathArgument, NormalizedNode<?, ?>> data,
35 final PathArgument childId, final Version version) {
36 final Optional<NormalizedNode<?, ?>> child = data.getChild(childId);
37 return child.isPresent() ? TreeNodeFactory.createTreeNode(child.get(), version) : null;