2 * Copyright (c) 2015 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
9 package org.opendaylight.controller.cluster.datastore.node.utils.transformer;
11 import com.google.common.annotations.VisibleForTesting;
12 import com.google.common.base.Preconditions;
13 import java.io.IOException;
15 import java.util.HashSet;
16 import java.util.LinkedList;
17 import java.util.List;
19 import javax.xml.transform.dom.DOMSource;
20 import org.opendaylight.yangtools.yang.common.QName;
21 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
22 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
23 import org.opendaylight.yangtools.yang.data.api.schema.stream.NormalizedNodeStreamWriter;
24 import org.opendaylight.yangtools.yang.data.impl.schema.Builders;
25 import org.opendaylight.yangtools.yang.data.impl.schema.builder.api.NormalizedNodeContainerBuilder;
26 import org.opendaylight.yangtools.yang.model.api.SchemaContext;
29 * The NormalizedNodePruner removes all nodes from the input NormalizedNode that do not have a corresponding
30 * schema element in the passed in SchemaContext
33 public class NormalizedNodePruner implements NormalizedNodeStreamWriter {
35 private final SimpleStack<NormalizedNodeBuilderWrapper> stack = new SimpleStack<>();
36 private NormalizedNode<?,?> normalizedNode;
37 private final Set<URI> validNamespaces;
38 private boolean sealed = false;
40 public NormalizedNodePruner(SchemaContext schemaContext) {
41 this(NormalizedNodePruner.namespaces(schemaContext));
44 public NormalizedNodePruner(Set<URI> validNamespaces) {
45 this.validNamespaces = validNamespaces;
49 public void leafNode(YangInstanceIdentifier.NodeIdentifier nodeIdentifier, Object o) throws IOException, IllegalArgumentException {
53 if(!isValidNamespace(nodeIdentifier)){
56 NormalizedNodeBuilderWrapper parent = stack.peek();
57 Preconditions.checkState(parent != null, "leafNode has no parent");
59 .addChild(Builders.leafBuilder()
60 .withNodeIdentifier(nodeIdentifier)
66 public void startLeafSet(YangInstanceIdentifier.NodeIdentifier nodeIdentifier, int i) throws IOException, IllegalArgumentException {
70 addBuilder(Builders.leafSetBuilder().withNodeIdentifier(nodeIdentifier), nodeIdentifier);
74 public void leafSetEntryNode(Object o) throws IOException, IllegalArgumentException {
78 NormalizedNodeBuilderWrapper parent = stack.peek();
79 Preconditions.checkState(parent != null, "leafSetEntryNode has no parent");
80 if(!isValidNamespace(parent.identifier())){
85 .addChild(Builders.leafSetEntryBuilder()
87 .withNodeIdentifier(new YangInstanceIdentifier.NodeWithValue(parent.nodeType(), o))
92 public void startContainerNode(YangInstanceIdentifier.NodeIdentifier nodeIdentifier, int i) throws IOException, IllegalArgumentException {
96 addBuilder(Builders.containerBuilder().withNodeIdentifier(nodeIdentifier), nodeIdentifier);
100 public void startUnkeyedList(YangInstanceIdentifier.NodeIdentifier nodeIdentifier, int i) throws IOException, IllegalArgumentException {
104 addBuilder(Builders.unkeyedListBuilder().withNodeIdentifier(nodeIdentifier), nodeIdentifier);
108 public void startUnkeyedListItem(YangInstanceIdentifier.NodeIdentifier nodeIdentifier, int i) throws IOException, IllegalStateException {
112 addBuilder(Builders.unkeyedListEntryBuilder().withNodeIdentifier(nodeIdentifier), nodeIdentifier);
116 public void startMapNode(YangInstanceIdentifier.NodeIdentifier nodeIdentifier, int i) throws IOException, IllegalArgumentException {
120 addBuilder(Builders.mapBuilder().withNodeIdentifier(nodeIdentifier), nodeIdentifier);
124 public void startMapEntryNode(YangInstanceIdentifier.NodeIdentifierWithPredicates nodeIdentifierWithPredicates, int i) throws IOException, IllegalArgumentException {
128 addBuilder(Builders.mapEntryBuilder().withNodeIdentifier(nodeIdentifierWithPredicates), nodeIdentifierWithPredicates);
132 public void startOrderedMapNode(YangInstanceIdentifier.NodeIdentifier nodeIdentifier, int i) throws IOException, IllegalArgumentException {
136 addBuilder(Builders.orderedMapBuilder().withNodeIdentifier(nodeIdentifier), nodeIdentifier);
140 public void startChoiceNode(YangInstanceIdentifier.NodeIdentifier nodeIdentifier, int i) throws IOException, IllegalArgumentException {
144 addBuilder(Builders.choiceBuilder().withNodeIdentifier(nodeIdentifier), nodeIdentifier);
148 public void startAugmentationNode(YangInstanceIdentifier.AugmentationIdentifier augmentationIdentifier) throws IOException, IllegalArgumentException {
152 addBuilder(Builders.augmentationBuilder().withNodeIdentifier(augmentationIdentifier), augmentationIdentifier);
156 public void anyxmlNode(YangInstanceIdentifier.NodeIdentifier nodeIdentifier, Object o) throws IOException, IllegalArgumentException {
160 if(!isValidNamespace(nodeIdentifier)){
163 NormalizedNodeBuilderWrapper parent = stack.peek();
164 Preconditions.checkState(parent != null, "anyxmlNode has no parent");
165 parent.builder().addChild(Builders.anyXmlBuilder().withNodeIdentifier(nodeIdentifier).withValue((DOMSource) o).build());
169 public void endNode() throws IOException, IllegalStateException {
173 NormalizedNodeBuilderWrapper child = stack.pop();
175 Preconditions.checkState(child != null, "endNode called on an empty stack");
177 if(!isValidNamespace(child.identifier())){
180 NormalizedNode<?,?> normalizedNode = child.builder().build();
182 if(stack.size() > 0){
183 NormalizedNodeBuilderWrapper parent = stack.peek();
184 parent.builder().addChild(normalizedNode);
186 this.normalizedNode = normalizedNode;
192 public void close() throws IOException {
197 public void flush() throws IOException {
201 public NormalizedNode<?,?> normalizedNode(){
202 return normalizedNode;
205 private void checkNotSealed(){
206 Preconditions.checkState(!sealed, "Pruner can be used only once");
209 private boolean isValidNamespace(QName qName){
210 return validNamespaces.contains(qName.getNamespace());
213 private boolean isValidNamespace(YangInstanceIdentifier.AugmentationIdentifier augmentationIdentifier){
214 Set<QName> possibleChildNames = augmentationIdentifier.getPossibleChildNames();
216 for(QName qName : possibleChildNames){
217 if(isValidNamespace(qName)){
225 private boolean isValidNamespace(YangInstanceIdentifier.PathArgument identifier){
226 if(identifier instanceof YangInstanceIdentifier.AugmentationIdentifier){
227 return isValidNamespace((YangInstanceIdentifier.AugmentationIdentifier) identifier);
230 return isValidNamespace(identifier.getNodeType());
233 private NormalizedNodeBuilderWrapper addBuilder(NormalizedNodeContainerBuilder<?,?,?,?> builder, YangInstanceIdentifier.PathArgument identifier){
234 NormalizedNodeBuilderWrapper wrapper = new NormalizedNodeBuilderWrapper(builder, identifier);
240 static class SimpleStack<E> {
241 List<E> stack = new LinkedList<>();
243 void push(E element){
251 return stack.remove(stack.size() - 1);
259 return stack.get(stack.size() - 1);
268 SimpleStack<NormalizedNodeBuilderWrapper> stack(){
272 public static Set<URI> namespaces(SchemaContext schemaContext){
273 Set<URI> namespaces = new HashSet<>(schemaContext.getModules().size());
274 for(org.opendaylight.yangtools.yang.model.api.Module module : schemaContext.getModules()){
275 namespaces.add(module.getNamespace());