2 * Copyright (c) 2013 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.yangtools.yang.data.impl.codec.xml;
10 import com.google.common.base.Optional;
11 import com.google.common.base.Preconditions;
14 import java.util.Map.Entry;
15 import org.opendaylight.yangtools.util.xml.UntrustedXML;
16 import org.opendaylight.yangtools.yang.common.QName;
17 import org.opendaylight.yangtools.yang.data.api.AttributesContainer;
18 import org.opendaylight.yangtools.yang.data.api.ModifyAction;
19 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
20 import org.opendaylight.yangtools.yang.model.api.ChoiceCaseNode;
21 import org.opendaylight.yangtools.yang.model.api.ChoiceSchemaNode;
22 import org.opendaylight.yangtools.yang.model.api.DataSchemaNode;
23 import org.opendaylight.yangtools.yang.model.api.SchemaContext;
24 import org.w3c.dom.Attr;
25 import org.w3c.dom.Document;
26 import org.w3c.dom.Element;
28 public final class XmlDocumentUtils {
29 public static final QName OPERATION_ATTRIBUTE_QNAME = QName.create(SchemaContext.NAME, "operation");
31 private XmlDocumentUtils() {
32 throw new UnsupportedOperationException("Utility class should not be instantiated");
35 public static Document getDocument() {
36 return UntrustedXML.newDocumentBuilder().newDocument();
39 private static Element createElementFor(final Document doc, final QName qname, final Object obj) {
41 if (qname.getNamespace() != null) {
42 ret = doc.createElementNS(qname.getNamespace().toString(), qname.getLocalName());
44 ret = doc.createElementNS(null, qname.getLocalName());
47 if (obj instanceof AttributesContainer) {
48 final Map<QName, String> attrs = ((AttributesContainer)obj).getAttributes();
51 for (Entry<QName, String> attribute : attrs.entrySet()) {
52 ret.setAttributeNS(attribute.getKey().getNamespace().toString(), attribute.getKey().getLocalName(),
53 attribute.getValue());
61 public static Element createElementFor(final Document doc, final NormalizedNode<?, ?> data) {
62 return createElementFor(doc, data.getNodeType(), data);
65 public static QName qNameFromElement(final Element xmlElement) {
66 String namespace = xmlElement.getNamespaceURI();
67 String localName = xmlElement.getLocalName();
68 return QName.create(namespace != null ? URI.create(namespace) : null, null, localName);
71 public static Optional<ModifyAction> getModifyOperationFromAttributes(final Element xmlElement) {
72 Attr attributeNodeNS = xmlElement.getAttributeNodeNS(OPERATION_ATTRIBUTE_QNAME.getNamespace().toString(),
73 OPERATION_ATTRIBUTE_QNAME.getLocalName());
74 if (attributeNodeNS == null) {
75 return Optional.absent();
78 ModifyAction action = ModifyAction.fromXmlValue(attributeNodeNS.getValue());
79 Preconditions.checkArgument(action.isOnElementPermitted(), "Unexpected operation %s on %s", action, xmlElement);
81 return Optional.of(action);
84 public static Optional<DataSchemaNode> findFirstSchema(final QName qname,
85 final Iterable<DataSchemaNode> dataSchemaNode) {
86 if (dataSchemaNode != null && qname != null) {
87 for (DataSchemaNode dsn : dataSchemaNode) {
88 if (qname.isEqualWithoutRevision(dsn.getQName())) {
89 return Optional.of(dsn);
90 } else if (dsn instanceof ChoiceSchemaNode) {
91 for (ChoiceCaseNode choiceCase : ((ChoiceSchemaNode) dsn).getCases()) {
92 Optional<DataSchemaNode> foundDsn = findFirstSchema(qname, choiceCase.getChildNodes());
93 if (foundDsn != null && foundDsn.isPresent()) {
100 return Optional.absent();
103 public static XmlCodecProvider defaultValueCodecProvider() {
104 return XmlUtils.DEFAULT_XML_CODEC_PROVIDER;