/*
* Copyright (c) 2014, 2015 Cisco Systems, Inc. and others. All rights reserved.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v1.0 which accompanies this distribution,
* and is available at http://www.eclipse.org/legal/epl-v10.html
*/
package org.opendaylight.controller.cluster.datastore.node.utils;
import com.google.common.base.Preconditions;
import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
import org.opendaylight.yangtools.yang.data.api.schema.DataContainerChild;
import org.opendaylight.yangtools.yang.data.api.schema.DataContainerNode;
import org.opendaylight.yangtools.yang.data.api.schema.MixinNode;
import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNodeContainer;
/**
* NormalizedNodeNavigator walks a {@link NormalizedNodeVisitor} through the NormalizedNode.
*/
public class NormalizedNodeNavigator {
private final org.opendaylight.controller.cluster.datastore.node.utils.NormalizedNodeVisitor visitor;
public NormalizedNodeNavigator(
org.opendaylight.controller.cluster.datastore.node.utils.NormalizedNodeVisitor visitor) {
Preconditions.checkNotNull(visitor, "visitor should not be null");
this.visitor = visitor;
}
public void navigate(String parentPath, NormalizedNode<?, ?> normalizedNode) {
if (parentPath == null) {
parentPath = "";
}
navigateNormalizedNode(0, parentPath, normalizedNode);
}
private void navigateDataContainerNode(int level, final String parentPath,
final DataContainerNode<?> dataContainerNode) {
visitor.visitNode(level, parentPath, dataContainerNode);
String newParentPath = parentPath + "/" + dataContainerNode.getIdentifier().toString();
final Iterable<DataContainerChild<? extends YangInstanceIdentifier.PathArgument, ?>> value = dataContainerNode
.getValue();
for (NormalizedNode<?, ?> node : value) {
if (node instanceof MixinNode && node instanceof NormalizedNodeContainer) {
navigateNormalizedNodeContainerMixin(level, newParentPath, (NormalizedNodeContainer<?, ?, ?>) node);
} else {
navigateNormalizedNode(level, newParentPath, node);
}
}
}
private void navigateNormalizedNodeContainerMixin(int level, final String parentPath,
NormalizedNodeContainer<?, ?, ?> node) {
visitor.visitNode(level, parentPath, node);
String newParentPath = parentPath + "/" + node.getIdentifier().toString();
final Iterable<? extends NormalizedNode<?, ?>> value = node.getValue();
for (NormalizedNode<?, ?> normalizedNode : value) {
if (normalizedNode instanceof MixinNode && normalizedNode instanceof NormalizedNodeContainer) {
navigateNormalizedNodeContainerMixin(level + 1, newParentPath,
(NormalizedNodeContainer<?, ?, ?>) normalizedNode);
} else {
navigateNormalizedNode(level, newParentPath, normalizedNode);
}
}
}
private void navigateNormalizedNode(int level, String parentPath, NormalizedNode<?, ?> normalizedNode) {
if (normalizedNode instanceof DataContainerNode) {
final DataContainerNode<?> dataContainerNode = (DataContainerNode<?>) normalizedNode;
navigateDataContainerNode(level + 1, parentPath, dataContainerNode);
} else {
visitor.visitNode(level + 1, parentPath, normalizedNode);
}
}
}