2 * Copyright (c) 2020 PANTHEON.tech, s.r.o. 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.restconf.nb.rfc8040.streams.listeners;
10 import static java.util.Objects.requireNonNull;
11 import static org.opendaylight.restconf.nb.rfc8040.streams.listeners.NotificationFormatter.DATA_CHANGE_EVENT_ELEMENT;
13 import java.util.Collection;
14 import javax.xml.stream.XMLStreamException;
15 import javax.xml.stream.XMLStreamWriter;
16 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.PathArgument;
17 import org.opendaylight.yangtools.yang.data.api.schema.stream.NormalizedNodeStreamWriter;
18 import org.opendaylight.yangtools.yang.data.api.schema.stream.NormalizedNodeWriter;
19 import org.opendaylight.yangtools.yang.data.codec.xml.XMLStreamNormalizedNodeStreamWriter;
20 import org.opendaylight.yangtools.yang.data.tree.api.DataTreeCandidateNode;
21 import org.opendaylight.yangtools.yang.model.api.EffectiveModelContext;
22 import org.opendaylight.yangtools.yang.model.util.SchemaInferenceStack.Inference;
24 final class XmlDataTreeCandidateSerializer extends AbstractWebsocketSerializer<Exception> {
25 private final XMLStreamWriter xmlWriter;
27 XmlDataTreeCandidateSerializer(final EffectiveModelContext context, final XMLStreamWriter xmlWriter) {
29 this.xmlWriter = requireNonNull(xmlWriter);
33 void serializeData(final Inference parent, final Collection<PathArgument> nodePath,
34 final DataTreeCandidateNode candidate, final boolean skipData) throws Exception {
35 NormalizedNodeStreamWriter nodeStreamWriter = XMLStreamNormalizedNodeStreamWriter.create(xmlWriter, parent);
36 xmlWriter.writeStartElement(DATA_CHANGE_EVENT_ELEMENT);
37 serializePath(nodePath);
40 final var dataAfter = getDataAfter(candidate);
41 if (dataAfter != null) {
42 xmlWriter.writeStartElement("data");
43 NormalizedNodeWriter nnWriter = NormalizedNodeWriter.forStreamWriter(nodeStreamWriter);
44 nnWriter.write(dataAfter);
46 xmlWriter.writeEndElement();
49 serializeOperation(candidate);
51 xmlWriter.writeEndElement();
55 public void serializePath(final Collection<PathArgument> pathArguments) throws XMLStreamException {
56 xmlWriter.writeStartElement("path");
57 // FIXME: use proper XML codec for YangInstanceIdentifier
58 xmlWriter.writeCharacters(convertPath(pathArguments));
59 xmlWriter.writeEndElement();
63 public void serializeOperation(final DataTreeCandidateNode candidate) throws XMLStreamException {
64 xmlWriter.writeStartElement("operation");
65 xmlWriter.writeCharacters(modificationTypeToOperation(candidate, candidate.modificationType()));
66 xmlWriter.writeEndElement();