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.netconf.client.mdsal.impl;
10 import static java.util.Objects.requireNonNull;
11 import static org.opendaylight.yang.svc.v1.urn.ietf.params.xml.ns.netconf.base._1._0.rev110601.YangModuleInfoImpl.qnameOf;
13 import com.google.common.base.Preconditions;
14 import com.google.common.collect.ImmutableList;
15 import java.io.IOException;
16 import java.time.Instant;
17 import java.time.format.DateTimeParseException;
18 import java.util.ArrayDeque;
19 import java.util.Collection;
20 import java.util.Iterator;
21 import java.util.List;
23 import java.util.Map.Entry;
24 import java.util.Optional;
25 import javax.xml.stream.XMLStreamException;
26 import javax.xml.stream.XMLStreamWriter;
27 import javax.xml.transform.dom.DOMResult;
28 import javax.xml.transform.dom.DOMSource;
29 import org.eclipse.jdt.annotation.NonNull;
30 import org.opendaylight.mdsal.dom.api.DOMDataTreeIdentifier;
31 import org.opendaylight.netconf.api.DocumentedException;
32 import org.opendaylight.netconf.api.EffectiveOperation;
33 import org.opendaylight.netconf.api.NamespaceURN;
34 import org.opendaylight.netconf.api.messages.NetconfMessage;
35 import org.opendaylight.netconf.api.messages.NotificationMessage;
36 import org.opendaylight.netconf.api.messages.RpcMessage;
37 import org.opendaylight.netconf.api.messages.RpcReplyMessage;
38 import org.opendaylight.netconf.api.xml.XmlElement;
39 import org.opendaylight.netconf.api.xml.XmlNetconfConstants;
40 import org.opendaylight.netconf.api.xml.XmlUtil;
41 import org.opendaylight.netconf.common.mdsal.NormalizedDataUtil;
42 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.netconf.base._1._0.rev110601.Candidate;
43 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.netconf.base._1._0.rev110601.CommitInput;
44 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.netconf.base._1._0.rev110601.CopyConfig;
45 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.netconf.base._1._0.rev110601.DiscardChangesInput;
46 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.netconf.base._1._0.rev110601.EditConfig;
47 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.netconf.base._1._0.rev110601.Get;
48 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.netconf.base._1._0.rev110601.GetConfig;
49 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.netconf.base._1._0.rev110601.Lock;
50 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.netconf.base._1._0.rev110601.Unlock;
51 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.netconf.base._1._0.rev110601.Validate;
52 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.netconf.base._1._0.rev110601.edit.config.input.EditContent;
53 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.netconf.base._1._0.rev110601.get.config.output.Data;
54 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.netconf.base._1._0.rev110601.get.input.Filter;
55 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.netconf.monitoring.rev101004.NetconfState;
56 import org.opendaylight.yangtools.yang.common.QName;
57 import org.opendaylight.yangtools.yang.common.YangConstants;
58 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
59 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.NodeIdentifier;
60 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.NodeIdentifierWithPredicates;
61 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.NodeWithValue;
62 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.PathArgument;
63 import org.opendaylight.yangtools.yang.data.api.schema.AnyxmlNode;
64 import org.opendaylight.yangtools.yang.data.api.schema.ContainerNode;
65 import org.opendaylight.yangtools.yang.data.api.schema.DOMSourceAnyxmlNode;
66 import org.opendaylight.yangtools.yang.data.api.schema.DataContainerChild;
67 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedMetadata;
68 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
69 import org.opendaylight.yangtools.yang.data.api.schema.stream.NormalizedNodeStreamWriter;
70 import org.opendaylight.yangtools.yang.data.api.schema.stream.NormalizedNodeWriter;
71 import org.opendaylight.yangtools.yang.data.api.schema.stream.YangInstanceIdentifierWriter;
72 import org.opendaylight.yangtools.yang.data.codec.xml.XMLStreamNormalizedNodeStreamWriter;
73 import org.opendaylight.yangtools.yang.data.impl.schema.ImmutableNormalizedMetadata;
74 import org.opendaylight.yangtools.yang.data.impl.schema.ImmutableNormalizedNodeStreamWriter;
75 import org.opendaylight.yangtools.yang.data.impl.schema.NormalizationResultHolder;
76 import org.opendaylight.yangtools.yang.data.impl.schema.SchemaOrderedNormalizedNodeWriter;
77 import org.opendaylight.yangtools.yang.data.spi.node.ImmutableNodes;
78 import org.opendaylight.yangtools.yang.data.util.DataSchemaContext;
79 import org.opendaylight.yangtools.yang.data.util.DataSchemaContext.PathMixin;
80 import org.opendaylight.yangtools.yang.data.util.DataSchemaContextTree;
81 import org.opendaylight.yangtools.yang.model.api.EffectiveModelContext;
82 import org.opendaylight.yangtools.yang.model.api.stmt.SchemaNodeIdentifier.Absolute;
83 import org.opendaylight.yangtools.yang.model.util.SchemaInferenceStack;
84 import org.slf4j.Logger;
85 import org.slf4j.LoggerFactory;
86 import org.w3c.dom.Document;
87 import org.w3c.dom.Element;
89 public final class NetconfMessageTransformUtil {
90 private static final Logger LOG = LoggerFactory.getLogger(NetconfMessageTransformUtil.class);
92 public static final String MESSAGE_ID_PREFIX = "m";
94 // Blank document used for creation of new DOM nodes
95 private static final Document BLANK_DOCUMENT = XmlUtil.newDocument();
97 public static final @NonNull QName IETF_NETCONF_MONITORING =
98 QName.create(NetconfState.QNAME, "ietf-netconf-monitoring").intern();
99 public static final @NonNull QName IETF_NETCONF_MONITORING_SCHEMA_FORMAT =
100 QName.create(IETF_NETCONF_MONITORING, "format").intern();
101 public static final @NonNull QName IETF_NETCONF_MONITORING_SCHEMA_LOCATION =
102 QName.create(IETF_NETCONF_MONITORING, "location").intern();
103 public static final @NonNull QName IETF_NETCONF_MONITORING_SCHEMA_IDENTIFIER =
104 QName.create(IETF_NETCONF_MONITORING, "identifier").intern();
105 public static final @NonNull QName IETF_NETCONF_MONITORING_SCHEMA_VERSION =
106 QName.create(IETF_NETCONF_MONITORING, "version").intern();
107 public static final @NonNull QName IETF_NETCONF_MONITORING_SCHEMA_NAMESPACE =
108 QName.create(IETF_NETCONF_MONITORING, "namespace").intern();
110 public static final @NonNull NodeIdentifier NETCONF_DATA_NODEID = NodeIdentifier.create(Data.QNAME);
112 public static final @NonNull QName NETCONF_RPC_REPLY_QNAME = qnameOf(RpcReplyMessage.ELEMENT_NAME);
113 public static final @NonNull NodeIdentifier NETCONF_RPC_REPLY_NODEID =
114 NodeIdentifier.create(NETCONF_RPC_REPLY_QNAME);
116 public static final @NonNull NodeIdentifier NETCONF_ERROR_OPTION_NODEID =
117 NodeIdentifier.create(qnameOf("error-option"));
118 public static final @NonNull NodeIdentifier NETCONF_RUNNING_NODEID = NodeIdentifier.create(qnameOf("running"));
119 public static final @NonNull NodeIdentifier NETCONF_SOURCE_NODEID = NodeIdentifier.create(qnameOf("source"));
120 public static final @NonNull NodeIdentifier NETCONF_CANDIDATE_NODEID = NodeIdentifier.create(Candidate.QNAME);
121 public static final @NonNull NodeIdentifier NETCONF_TARGET_NODEID = NodeIdentifier.create(qnameOf("target"));
122 public static final @NonNull NodeIdentifier NETCONF_CONFIG_NODEID = NodeIdentifier.create(qnameOf("config"));
124 public static final @NonNull NodeIdentifier NETCONF_VALIDATE_NODEID = NodeIdentifier.create(Validate.QNAME);
125 public static final @NonNull NodeIdentifier NETCONF_COPY_CONFIG_NODEID = NodeIdentifier.create(CopyConfig.QNAME);
127 private static final @NonNull QName NETCONF_OPERATION_QNAME_LEGACY =
128 QName.create(NamespaceURN.BASE, XmlNetconfConstants.OPERATION_ATTR_KEY).intern();
130 public static final @NonNull NodeIdentifier NETCONF_DEFAULT_OPERATION_NODEID =
131 NodeIdentifier.create(qnameOf("default-operation"));
132 public static final @NonNull NodeIdentifier NETCONF_EDIT_CONFIG_NODEID = NodeIdentifier.create(EditConfig.QNAME);
133 public static final @NonNull NodeIdentifier NETCONF_GET_CONFIG_NODEID = NodeIdentifier.create(GetConfig.QNAME);
134 public static final @NonNull NodeIdentifier NETCONF_GET_NODEID = NodeIdentifier.create(Get.QNAME);
135 public static final @NonNull QName NETCONF_RPC_QNAME = qnameOf(RpcMessage.ELEMENT_NAME);
137 public static final @NonNull NodeIdentifier NETCONF_LOCK_NODEID = NodeIdentifier.create(Lock.QNAME);
138 public static final @NonNull NodeIdentifier NETCONF_UNLOCK_NODEID = NodeIdentifier.create(Unlock.QNAME);
139 public static final @NonNull NodeIdentifier EDIT_CONTENT_NODEID = NodeIdentifier.create(EditContent.QNAME);
141 // Discard changes message
142 public static final @NonNull ContainerNode DISCARD_CHANGES_RPC_CONTENT = ImmutableNodes.newContainerBuilder()
143 .withNodeIdentifier(NodeIdentifier.create(DiscardChangesInput.QNAME)).build();
145 // Commit changes message
146 public static final @NonNull ContainerNode COMMIT_RPC_CONTENT = ImmutableNodes.newContainerBuilder()
147 .withNodeIdentifier(NodeIdentifier.create(CommitInput.QNAME)).build();
150 public static final @NonNull ContainerNode GET_RPC_CONTENT = ImmutableNodes.newContainerBuilder()
151 .withNodeIdentifier(NETCONF_GET_NODEID).build();
153 public static final @NonNull AnyxmlNode<?> EMPTY_FILTER = buildFilterStructure(newFilterElement());
155 private NetconfMessageTransformUtil() {
160 * Creation of the subtree filter structure using {@link YangInstanceIdentifier} path.
162 * @param identifier parent path / query
163 * @param ctx mountpoint schema context
164 * @return created DOM structure with subtree filter
166 public static AnyxmlNode<?> toFilterStructure(final YangInstanceIdentifier identifier,
167 final EffectiveModelContext ctx) {
168 final Element element = newFilterElement();
170 NormalizedDataUtil.writeFilter(identifier, new DOMResult(element), ctx, null);
171 } catch (IOException | XMLStreamException e) {
172 throw new IllegalStateException("Unable to serialize filter element for path " + identifier, e);
174 return buildFilterStructure(element);
178 * Creation of the subtree filter structure using list of parent {@link YangInstanceIdentifier}
179 * and specific selection fields. Field paths are relative to parent query path.
181 * @param fieldsFilters list of: parent path and selection fields
182 * @param ctx mountpoint schema context
183 * @return created DOM structure with subtree filter
185 public static AnyxmlNode<?> toFilterStructure(final List<FieldsFilter> fieldsFilters,
186 final EffectiveModelContext ctx) {
187 Preconditions.checkState(!fieldsFilters.isEmpty(), "An empty list of subtree filters is not allowed");
188 final Element element = newFilterElement();
190 for (final FieldsFilter filter : fieldsFilters) {
192 NormalizedDataUtil.writeFilter(filter.path(), new DOMResult(element), ctx, null, filter.fields());
193 } catch (IOException | XMLStreamException e) {
194 throw new IllegalStateException(String.format(
195 "Unable to serialize filter element for path %s with fields: %s",
196 filter.path(), filter.fields()), e);
199 return buildFilterStructure(element);
202 private static Element newFilterElement() {
203 final var element = BLANK_DOCUMENT.createElementNS(NamespaceURN.BASE, "filter");
204 element.setAttribute("type", "subtree");
208 private static AnyxmlNode<?> buildFilterStructure(final Element element) {
209 return ImmutableNodes.newAnyxmlBuilder(DOMSource.class)
210 .withNodeIdentifier(new NodeIdentifier(Filter.QNAME))
211 .withValue(new DOMSource(element))
215 public static NodeIdentifier toId(final PathArgument arg) {
216 return arg instanceof NodeIdentifier nodeId ? nodeId : toId(arg.getNodeType());
219 public static NodeIdentifier toId(final QName nodeType) {
220 return new NodeIdentifier(nodeType);
223 public static Element getDataSubtree(final Document doc) {
224 return (Element) doc.getElementsByTagNameNS(NamespaceURN.BASE, "data").item(0);
227 public static boolean isDataRetrievalOperation(final QName rpc) {
228 return YangConstants.NETCONF_NAMESPACE.equals(rpc.getNamespace())
229 && (GetConfig.QNAME.getLocalName().equals(rpc.getLocalName())
230 || Get.QNAME.getLocalName().equals(rpc.getLocalName()));
234 public static @NonNull ContainerNode wrap(final QName name, final DataContainerChild... node) {
235 return wrap(toId(name), node);
238 public static @NonNull ContainerNode wrap(final NodeIdentifier name, final DataContainerChild... node) {
239 return ImmutableNodes.newContainerBuilder()
240 .withNodeIdentifier(name)
241 .withValue(ImmutableList.copyOf(node))
246 * Create edit-config structure to invoke {@code operation} with {@code lastChildOverride} data on {@code dataPath}.
248 * @param ctx {@link EffectiveModelContext} device's model context
249 * @param dataPath {@link YangInstanceIdentifier} path to data in device's data-store
250 * @param operation Optional of {@link EffectiveOperation} action to be invoked
251 * @param lastChildOverride Optional of {@code NormalizedNode} data on which action will be invoked
252 * @return {@link DOMSourceAnyxmlNode} containing edit-config structure
254 public static AnyxmlNode<DOMSource> createEditConfigAnyxml(final EffectiveModelContext ctx,
255 final YangInstanceIdentifier dataPath, final Optional<EffectiveOperation> operation,
256 final Optional<NormalizedNode> lastChildOverride) {
257 if (dataPath.isEmpty()) {
258 final var override = lastChildOverride.orElseThrow(() -> new IllegalArgumentException(
259 "Data has to be present when creating structure for top level element"));
260 Preconditions.checkArgument(override instanceof DataContainerChild,
261 "Data has to be either container or a list node when creating structure for top level element, "
262 + "but was: %s", override);
265 final var element = BLANK_DOCUMENT.createElementNS(NamespaceURN.BASE, XmlNetconfConstants.CONFIG_KEY);
266 final var metadata = operation.map(o -> leafMetadata(dataPath, o)).orElse(null);
268 if (lastChildOverride.isPresent()) {
269 // TODO do not transform this into result and then to xml, rework the whole pipeline to directly write
272 final var parentPath = dataPath.isEmpty() ? dataPath : dataPath.coerceParent();
273 var result = new NormalizationResultHolder();
274 try (var streamWriter = ImmutableNormalizedNodeStreamWriter.from(result)) {
275 try (var iidWriter = YangInstanceIdentifierWriter.open(streamWriter, ctx, parentPath);
276 var nnWriter = NormalizedNodeWriter.forStreamWriter(streamWriter)) {
277 nnWriter.write(lastChildOverride.orElseThrow());
280 NormalizedDataUtil.writeNormalizedNode(result.getResult().data(), metadata, new DOMResult(element), ctx,
283 NormalizedDataUtil.writeNormalizedNode(dataPath, metadata, new DOMResult(element), ctx, null);
285 } catch (final IOException | XMLStreamException e) {
286 throw new IllegalStateException("Unable to serialize edit config content element for path " + dataPath, e);
289 return ImmutableNodes.newAnyxmlBuilder(DOMSource.class)
290 .withNodeIdentifier(NETCONF_CONFIG_NODEID)
291 .withValue(new DOMSource(element))
295 private static NormalizedMetadata leafMetadata(final YangInstanceIdentifier path, final EffectiveOperation oper) {
296 record BuilderAndArg(ImmutableNormalizedMetadata.Builder builder, PathArgument arg) {
298 requireNonNull(builder);
303 final var args = path.getPathArguments();
304 final var builders = new ArrayDeque<BuilderAndArg>(args.size());
306 // Step one: open builders
307 for (PathArgument arg : args) {
308 builders.push(new BuilderAndArg(ImmutableNormalizedMetadata.builder(), arg));
311 // Step two: set the top builder's metadata
312 builders.peek().builder.withAnnotation(NETCONF_OPERATION_QNAME_LEGACY, oper.xmlValue());
314 // Step three: build the tree
316 final var current = builders.pop();
317 final var currentMeta = current.builder.build();
318 final var parent = builders.peek();
319 if (parent != null) {
320 parent.builder.withChild(current.arg, currentMeta);
327 public static DataContainerChild createEditConfigStructure(final EffectiveModelContext ctx,
328 final YangInstanceIdentifier dataPath, final Optional<EffectiveOperation> operation,
329 final Optional<NormalizedNode> lastChildOverride) {
330 return ImmutableNodes.newChoiceBuilder()
331 .withNodeIdentifier(EDIT_CONTENT_NODEID)
332 .withChild(createEditConfigAnyxml(ctx, dataPath, operation, lastChildOverride))
336 public static @NonNull Absolute toPath(final QName rpc) {
337 return Absolute.of(rpc);
340 public static Map.Entry<Instant, XmlElement> stripNotification(final NetconfMessage message) {
341 final XmlElement xmlElement = XmlElement.fromDomDocument(message.getDocument());
342 final List<XmlElement> childElements = xmlElement.getChildElements();
343 Preconditions.checkArgument(childElements.size() == 2, "Unable to parse notification %s, unexpected format."
344 + "\nExpected 2 childElements, actual childElements size is %s", message, childElements.size());
346 final XmlElement eventTimeElement;
347 final XmlElement notificationElement;
349 if (childElements.get(0).getName().equals(XmlNetconfConstants.EVENT_TIME)) {
350 eventTimeElement = childElements.get(0);
351 notificationElement = childElements.get(1);
352 } else if (childElements.get(1).getName().equals(XmlNetconfConstants.EVENT_TIME)) {
353 eventTimeElement = childElements.get(1);
354 notificationElement = childElements.get(0);
356 throw new IllegalArgumentException(
357 "Notification payload does not contain " + XmlNetconfConstants.EVENT_TIME + " " + message);
362 NotificationMessage.RFC3339_DATE_PARSER.apply(eventTimeElement.getTextContent()),
363 notificationElement);
364 } catch (final DocumentedException e) {
365 throw new IllegalArgumentException(
366 "Notification payload does not contain " + XmlNetconfConstants.EVENT_TIME + " " + message, e);
367 } catch (final DateTimeParseException e) {
368 LOG.warn("Unable to parse event time from {}. Setting time to {}", eventTimeElement,
369 NotificationMessage.UNKNOWN_EVENT_TIME, e);
370 return Map.entry(NotificationMessage.UNKNOWN_EVENT_TIME, notificationElement);
374 public static DOMResult prepareDomResultForRpcRequest(final QName rpcQName, final MessageCounter counter) {
375 final Document document = XmlUtil.newDocument();
376 final Element rpcNS =
377 document.createElementNS(NETCONF_RPC_QNAME.getNamespace().toString(), NETCONF_RPC_QNAME.getLocalName());
379 rpcNS.setAttribute(XmlNetconfConstants.MESSAGE_ID, counter.getNewMessageId(MESSAGE_ID_PREFIX));
380 final Element elementNS = document.createElementNS(rpcQName.getNamespace().toString(), rpcQName.getLocalName());
381 rpcNS.appendChild(elementNS);
382 document.appendChild(rpcNS);
383 return new DOMResult(elementNS);
386 public static DOMResult prepareDomResultForActionRequest(final DataSchemaContextTree dataSchemaContextTree,
387 final DOMDataTreeIdentifier domDataTreeIdentifier, final MessageCounter counter, final QName action) {
388 final Document document = XmlUtil.newDocument();
389 final Element rpcNS =
390 document.createElementNS(NETCONF_RPC_QNAME.getNamespace().toString(), NETCONF_RPC_QNAME.getLocalName());
392 rpcNS.setAttribute(XmlNetconfConstants.MESSAGE_ID, counter.getNewMessageId(MESSAGE_ID_PREFIX));
394 final Element actionNS = document.createElementNS(YangConstants.RFC6020_YANG_NAMESPACE_STRING, "action");
395 final DataSchemaContext rootSchemaContextNode = dataSchemaContextTree.getRoot();
396 final Element actionData = prepareActionData(rootSchemaContextNode, actionNS,
397 domDataTreeIdentifier.path().getPathArguments().iterator(), document);
399 final Element specificActionElement =
400 document.createElementNS(action.getNamespace().toString(), action.getLocalName());
401 actionData.appendChild(specificActionElement);
402 rpcNS.appendChild(actionNS);
403 document.appendChild(rpcNS);
404 return new DOMResult(specificActionElement);
407 private static Element prepareActionData(final DataSchemaContext currentParentSchemaNode,
408 final Element actionNS, final Iterator<PathArgument> iterator, final Document document) {
409 if (iterator.hasNext()) {
410 final PathArgument next = iterator.next();
412 final DataSchemaContext current = currentParentSchemaNode instanceof DataSchemaContext.Composite composite
413 ? composite.childByArg(next) : null;
414 Preconditions.checkArgument(current != null, "Invalid input: schema for argument %s not found", next);
416 if (current instanceof PathMixin) {
417 return prepareActionData(current, actionNS, iterator, document);
420 final QName actualNS = next.getNodeType();
421 final Element actualElement = document.createElementNS(actualNS.getNamespace().toString(),
422 actualNS.getLocalName());
423 if (next instanceof NodeWithValue) {
424 actualElement.setNodeValue(((NodeWithValue<?>) next).getValue().toString());
425 } else if (next instanceof NodeIdentifierWithPredicates) {
426 for (Entry<QName, Object> entry : ((NodeIdentifierWithPredicates) next).entrySet()) {
427 final Element entryElement = document.createElementNS(entry.getKey().getNamespace().toString(),
428 entry.getKey().getLocalName());
429 entryElement.setTextContent(entry.getValue().toString());
430 entryElement.setNodeValue(entry.getValue().toString());
431 actualElement.appendChild(entryElement);
434 actionNS.appendChild(actualElement);
435 return prepareActionData(current, actualElement, iterator, document);
441 public static void writeNormalizedOperationInput(final ContainerNode normalized, final DOMResult result,
442 final Absolute operationPath, final EffectiveModelContext baseNetconfCtx)
443 throws IOException, XMLStreamException {
444 final var stack = SchemaInferenceStack.of(baseNetconfCtx, operationPath);
445 stack.enterSchemaTree(YangConstants.operationInputQName(operationPath.lastNodeIdentifier().getModule()));
446 final var inputInference = stack.toSchemaTreeInference();
448 final XMLStreamWriter writer = NormalizedDataUtil.XML_FACTORY.createXMLStreamWriter(result);
450 try (NormalizedNodeStreamWriter normalizedNodeStreamWriter =
451 XMLStreamNormalizedNodeStreamWriter.create(writer, inputInference)) {
452 try (SchemaOrderedNormalizedNodeWriter normalizedNodeWriter =
453 new SchemaOrderedNormalizedNodeWriter(normalizedNodeStreamWriter, inputInference)) {
454 final Collection<DataContainerChild> value = normalized.body();
455 normalizedNodeWriter.write(value);
456 normalizedNodeWriter.flush();
462 } catch (final XMLStreamException e) {
463 LOG.warn("Unable to close resource properly", e);