1 package org.opendaylight.controller.cluster.datastore.node.utils;
3 import com.google.common.base.Preconditions;
4 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
5 import org.opendaylight.yangtools.yang.data.api.schema.DataContainerChild;
6 import org.opendaylight.yangtools.yang.data.api.schema.DataContainerNode;
7 import org.opendaylight.yangtools.yang.data.api.schema.MixinNode;
8 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
9 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNodeContainer;
12 * NormalizedNodeNavigator walks a {@link NormalizedNodeVisitor} through the NormalizedNode
14 * {@link NormalizedNode } is a tree like structure that provides a generic structure for a yang data model
16 * For examples of visitors
17 * @see NormalizedNodePrinter
21 public class NormalizedNodeNavigator {
23 private final org.opendaylight.controller.cluster.datastore.node.utils.NormalizedNodeVisitor
26 public NormalizedNodeNavigator(
27 org.opendaylight.controller.cluster.datastore.node.utils.NormalizedNodeVisitor visitor){
28 Preconditions.checkNotNull(visitor, "visitor should not be null");
29 this.visitor = visitor;
31 public void navigate(String parentPath, NormalizedNode<?,?> normalizedNode){
32 if(parentPath == null){
35 navigateNormalizedNode(0, parentPath, normalizedNode);
38 private void navigateDataContainerNode(int level, final String parentPath, final DataContainerNode<?> dataContainerNode){
39 visitor.visitNode(level, parentPath ,dataContainerNode);
41 String newParentPath = parentPath + "/" + dataContainerNode.getIdentifier().toString();
43 final Iterable<DataContainerChild<? extends YangInstanceIdentifier.PathArgument,?>> value = dataContainerNode.getValue();
44 for(NormalizedNode<?,?> node : value){
45 if(node instanceof MixinNode && node instanceof NormalizedNodeContainer){
46 navigateNormalizedNodeContainerMixin(level, newParentPath, (NormalizedNodeContainer<?, ?, ?>) node);
48 navigateNormalizedNode(level, newParentPath, node);
54 private void navigateNormalizedNodeContainerMixin(int level, final String parentPath, NormalizedNodeContainer<?, ?, ?> node) {
55 visitor.visitNode(level, parentPath, node);
57 String newParentPath = parentPath + "/" + node.getIdentifier().toString();
59 final Iterable<? extends NormalizedNode<?, ?>> value = node.getValue();
60 for(NormalizedNode normalizedNode : value){
61 if(normalizedNode instanceof MixinNode && normalizedNode instanceof NormalizedNodeContainer){
62 navigateNormalizedNodeContainerMixin(level + 1, newParentPath, (NormalizedNodeContainer) normalizedNode);
64 navigateNormalizedNode(level, newParentPath, normalizedNode);
71 private void navigateNormalizedNode(int level, String parentPath, NormalizedNode<?,?> normalizedNode){
72 if(normalizedNode instanceof DataContainerNode){
74 final DataContainerNode<?> dataContainerNode = (DataContainerNode) normalizedNode;
76 navigateDataContainerNode(level + 1, parentPath, dataContainerNode);
78 visitor.visitNode(level+1, parentPath, normalizedNode);