-/*
- * Copyright (c) 2016 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.restconf.nb.rfc8040.jersey.providers;
-
-import java.io.IOException;
-import java.io.OutputStream;
-import javax.ws.rs.Produces;
-import javax.ws.rs.core.MediaType;
-import javax.ws.rs.ext.Provider;
-import javax.xml.XMLConstants;
-import javax.xml.stream.XMLStreamException;
-import javax.xml.stream.XMLStreamWriter;
-import org.opendaylight.restconf.api.MediaTypes;
-import org.opendaylight.restconf.api.query.PrettyPrintParam;
-import org.opendaylight.restconf.nb.rfc8040.legacy.WriterParameters;
-import org.opendaylight.restconf.server.spi.FormattableBodySupport;
-import org.opendaylight.yangtools.yang.common.QName;
-import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.NodeIdentifier;
-import org.opendaylight.yangtools.yang.data.api.schema.ContainerNode;
-import org.opendaylight.yangtools.yang.data.api.schema.MapEntryNode;
-import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
-import org.opendaylight.yangtools.yang.data.codec.xml.XMLStreamNormalizedNodeStreamWriter;
-import org.opendaylight.yangtools.yang.data.spi.node.ImmutableNodes;
-import org.opendaylight.yangtools.yang.model.util.SchemaInferenceStack;
-import org.opendaylight.yangtools.yang.model.util.SchemaInferenceStack.Inference;
-
-@Provider
-@Produces({ MediaTypes.APPLICATION_YANG_DATA_XML, MediaType.APPLICATION_XML, MediaType.TEXT_XML })
-public final class XmlNormalizedNodeBodyWriter extends AbstractNormalizedNodeBodyWriter {
- @Override
- void writeData(final SchemaInferenceStack stack, final NormalizedNode data, final WriterParameters writerParameters,
- final PrettyPrintParam prettyPrint, final OutputStream out) throws IOException {
- final boolean isRoot;
- if (!stack.isEmpty()) {
- stack.exit();
- isRoot = false;
- } else {
- isRoot = true;
- }
-
- final var xmlWriter = FormattableBodySupport.createXmlWriter(out, prettyPrint);
- final var nnWriter = createNormalizedNodeWriter(xmlWriter, stack.toInference(), writerParameters);
- if (data instanceof MapEntryNode mapEntry) {
- // Restconf allows returning one list item. We need to wrap it
- // in map node in order to serialize it properly
- nnWriter.write(ImmutableNodes.newSystemMapBuilder()
- .withNodeIdentifier(new NodeIdentifier(data.name().getNodeType()))
- .addChild(mapEntry)
- .build());
- } else if (isRoot) {
- if (data instanceof ContainerNode container && container.isEmpty()) {
- writeEmptyDataNode(xmlWriter, container);
- } else {
- writeAndWrapInDataNode(xmlWriter, nnWriter, data);
- }
- } else {
- nnWriter.write(data);
- }
- nnWriter.flush();
- }
-
- private static RestconfNormalizedNodeWriter createNormalizedNodeWriter(final XMLStreamWriter xmlWriter,
- final Inference inference, final WriterParameters writerParameters) {
- return RestconfNormalizedNodeWriter.forStreamWriter(
- XMLStreamNormalizedNodeStreamWriter.create(xmlWriter, inference),
- writerParameters.depth(), writerParameters.fields());
- }
-
- private static void writeAndWrapInDataNode(final XMLStreamWriter xmlWriter,
- final RestconfNormalizedNodeWriter nnWriter, final NormalizedNode data) throws IOException {
- final QName nodeType = data.name().getNodeType();
- final String namespace = nodeType.getNamespace().toString();
- try {
- xmlWriter.writeStartElement(XMLConstants.DEFAULT_NS_PREFIX, nodeType.getLocalName(), namespace);
- xmlWriter.writeDefaultNamespace(namespace);
- nnWriter.write(data);
- xmlWriter.writeEndElement();
- xmlWriter.flush();
- } catch (XMLStreamException e) {
- throw new IOException("Failed to write elements", e);
- }
- }
-
- private static void writeEmptyDataNode(final XMLStreamWriter xmlWriter, final ContainerNode data)
- throws IOException {
- final QName nodeType = data.name().getNodeType();
- final String namespace = nodeType.getNamespace().toString();
- try {
- xmlWriter.writeStartElement(XMLConstants.DEFAULT_NS_PREFIX, nodeType.getLocalName(), namespace);
- xmlWriter.writeDefaultNamespace(namespace);
- xmlWriter.writeEndElement();
- xmlWriter.flush();
- } catch (XMLStreamException e) {
- throw new IOException("Failed to write elements", e);
- }
- }
-}