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.spi.tree;
10 import org.eclipse.jdt.annotation.Nullable;
11 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.PathArgument;
12 import org.opendaylight.yangtools.yang.data.api.schema.DistinctNodeContainer;
13 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
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 DistinctNodeContainer<?, PathArgument, NormalizedNode> castData() {
26 return (DistinctNodeContainer<?, PathArgument, NormalizedNode>) getData();
29 protected final @Nullable TreeNode getChildFromData(final PathArgument childId) {
30 // We do not cache the instantiated node as it is dirt cheap
31 return getChildFromData(castData(), childId, getVersion());
34 static TreeNode getChildFromData(final DistinctNodeContainer<?, PathArgument, NormalizedNode> data,
35 final PathArgument childId, final Version version) {
36 final NormalizedNode child = data.childByArg(childId);
37 return child != null ? TreeNodeFactory.createTreeNode(child, version) : null;