2 * Copyright (c) 2016 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.codec.xml;
10 import static com.google.common.base.Preconditions.checkArgument;
11 import static com.google.common.base.Preconditions.checkState;
12 import static com.google.common.base.Verify.verify;
13 import static java.util.Objects.requireNonNull;
15 import com.google.common.annotations.Beta;
16 import com.google.common.base.Strings;
17 import com.google.common.collect.ImmutableMap;
18 import java.io.Closeable;
19 import java.io.Flushable;
20 import java.io.IOException;
22 import java.net.URISyntaxException;
23 import java.util.AbstractMap.SimpleImmutableEntry;
24 import java.util.Deque;
25 import java.util.HashMap;
26 import java.util.HashSet;
27 import java.util.Iterator;
28 import java.util.LinkedHashMap;
30 import java.util.Map.Entry;
31 import java.util.Optional;
33 import javax.xml.XMLConstants;
34 import javax.xml.namespace.NamespaceContext;
35 import javax.xml.stream.XMLStreamConstants;
36 import javax.xml.stream.XMLStreamException;
37 import javax.xml.stream.XMLStreamReader;
38 import javax.xml.stream.util.StreamReaderDelegate;
39 import javax.xml.transform.TransformerException;
40 import javax.xml.transform.TransformerFactory;
41 import javax.xml.transform.TransformerFactoryConfigurationError;
42 import javax.xml.transform.dom.DOMResult;
43 import javax.xml.transform.dom.DOMSource;
44 import javax.xml.transform.stax.StAXSource;
45 import org.eclipse.jdt.annotation.NonNull;
46 import org.eclipse.jdt.annotation.Nullable;
47 import org.opendaylight.yangtools.odlext.model.api.YangModeledAnyXmlSchemaNode;
48 import org.opendaylight.yangtools.rfc7952.data.util.AbstractImmutableOpaqueAnydataStreamWriter;
49 import org.opendaylight.yangtools.rfc7952.data.util.ImmutableNormalizedMetadata;
50 import org.opendaylight.yangtools.rfc7952.model.api.AnnotationSchemaNode;
51 import org.opendaylight.yangtools.yang.common.QName;
52 import org.opendaylight.yangtools.yang.common.QNameModule;
53 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.NodeIdentifier;
54 import org.opendaylight.yangtools.yang.data.api.schema.opaque.OpaqueData;
55 import org.opendaylight.yangtools.yang.data.api.schema.stream.NormalizedNodeStreamWriter;
56 import org.opendaylight.yangtools.yang.data.util.AbstractNodeDataWithSchema;
57 import org.opendaylight.yangtools.yang.data.util.AnyXmlNodeDataWithSchema;
58 import org.opendaylight.yangtools.yang.data.util.CompositeNodeDataWithSchema;
59 import org.opendaylight.yangtools.yang.data.util.ContainerNodeDataWithSchema;
60 import org.opendaylight.yangtools.yang.data.util.LeafListEntryNodeDataWithSchema;
61 import org.opendaylight.yangtools.yang.data.util.LeafListNodeDataWithSchema;
62 import org.opendaylight.yangtools.yang.data.util.LeafNodeDataWithSchema;
63 import org.opendaylight.yangtools.yang.data.util.ListEntryNodeDataWithSchema;
64 import org.opendaylight.yangtools.yang.data.util.ListNodeDataWithSchema;
65 import org.opendaylight.yangtools.yang.data.util.OpaqueAnydataNodeDataWithSchema;
66 import org.opendaylight.yangtools.yang.data.util.OperationAsContainer;
67 import org.opendaylight.yangtools.yang.data.util.ParserStreamUtils;
68 import org.opendaylight.yangtools.yang.data.util.SimpleNodeDataWithSchema;
69 import org.opendaylight.yangtools.yang.data.util.YangModeledAnyXmlNodeDataWithSchema;
70 import org.opendaylight.yangtools.yang.model.api.AnyDataSchemaNode;
71 import org.opendaylight.yangtools.yang.model.api.AnyXmlSchemaNode;
72 import org.opendaylight.yangtools.yang.model.api.ContainerSchemaNode;
73 import org.opendaylight.yangtools.yang.model.api.DataSchemaNode;
74 import org.opendaylight.yangtools.yang.model.api.LeafListSchemaNode;
75 import org.opendaylight.yangtools.yang.model.api.LeafSchemaNode;
76 import org.opendaylight.yangtools.yang.model.api.ListSchemaNode;
77 import org.opendaylight.yangtools.yang.model.api.Module;
78 import org.opendaylight.yangtools.yang.model.api.OperationDefinition;
79 import org.opendaylight.yangtools.yang.model.api.SchemaContext;
80 import org.opendaylight.yangtools.yang.model.api.SchemaNode;
81 import org.opendaylight.yangtools.yang.model.api.TypedDataSchemaNode;
82 import org.slf4j.Logger;
83 import org.slf4j.LoggerFactory;
84 import org.w3c.dom.Document;
85 import org.xml.sax.SAXException;
88 * This class provides functionality for parsing an XML source containing YANG-modeled data. It disallows multiple
89 * instances of the same element except for leaf-list and list entries. It also expects that the YANG-modeled data in
90 * the XML source are wrapped in a root element. This class is NOT thread-safe.
93 * Due to backwards compatibility reasons, RFC7952 metadata emitted by this parser may include key QNames with empty URI
94 * (as exposed via {@link #LEGACY_ATTRIBUTE_NAMESPACE}) as their QNameModule. These indicate an unqualified XML
95 * attribute and their value can be assumed to be a String. Furthermore, this extends to qualified attributes, which
96 * uses the proper namespace, but will not bind to a proper module revision -- these need to be reconciled with a
97 * particular SchemaContext and are expected to either be fully decoded, or contain a String value. Handling of such
98 * annotations is at the discretion of the user encountering it: preferred way of handling is to either filter or
99 * normalize them to proper QNames/values when encountered. This caveat will be removed in a future version.
102 public final class XmlParserStream implements Closeable, Flushable {
104 * {@link QNameModule} for use with legacy XML attributes.
105 * @deprecated The use on this namespace is discouraged and users are strongly encouraged to proper RFC7952 metadata
109 public static final QNameModule LEGACY_ATTRIBUTE_NAMESPACE = QNameModule.create(URI.create("")).intern();
111 private static final Logger LOG = LoggerFactory.getLogger(XmlParserStream.class);
112 private static final String XML_STANDARD_VERSION = "1.0";
113 private static final String COM_SUN_TRANSFORMER =
114 "com.sun.org.apache.xalan.internal.xsltc.trax.TransformerFactoryImpl";
116 private static final TransformerFactory TRANSFORMER_FACTORY;
119 TransformerFactory fa = TransformerFactory.newInstance();
120 if (!fa.getFeature(StAXSource.FEATURE)) {
121 LOG.warn("Platform-default TransformerFactory {} does not support StAXSource, attempting fallback to {}",
122 fa, COM_SUN_TRANSFORMER);
123 fa = TransformerFactory.newInstance(COM_SUN_TRANSFORMER, null);
124 if (!fa.getFeature(StAXSource.FEATURE)) {
125 throw new TransformerFactoryConfigurationError("No TransformerFactory supporting StAXResult found.");
129 TRANSFORMER_FACTORY = fa;
132 // Cache of nsUri Strings to QNameModules, as resolved in context
133 private final Map<String, Optional<QNameModule>> resolvedNamespaces = new HashMap<>();
134 // Cache of nsUri Strings to QNameModules, as inferred from document
135 private final Map<String, QNameModule> rawNamespaces = new HashMap<>();
136 private final NormalizedNodeStreamWriter writer;
137 private final XmlCodecFactory codecs;
138 private final DataSchemaNode parentNode;
139 private final boolean strictParsing;
141 private XmlParserStream(final NormalizedNodeStreamWriter writer, final XmlCodecFactory codecs,
142 final DataSchemaNode parentNode, final boolean strictParsing) {
143 this.writer = requireNonNull(writer);
144 this.codecs = requireNonNull(codecs);
145 this.parentNode = parentNode;
146 this.strictParsing = strictParsing;
150 * Construct a new {@link XmlParserStream} with strict parsing mode switched on.
152 * @param writer Output writer
153 * @param codecs Shared codecs
154 * @param parentNode Parent root node
155 * @return A new stream instance
157 public static XmlParserStream create(final NormalizedNodeStreamWriter writer, final XmlCodecFactory codecs,
158 final SchemaNode parentNode) {
159 return create(writer, codecs, parentNode, true);
163 * Construct a new {@link XmlParserStream}.
165 * @param writer Output writer
166 * @param codecs Shared codecs
167 * @param parentNode Parent root node
168 * @param strictParsing parsing mode
169 * if set to true, the parser will throw an exception if it encounters unknown child nodes
170 * (nodes, that are not defined in the provided SchemaContext) in containers and lists
171 * if set to false, the parser will skip unknown child nodes
172 * @return A new stream instance
174 public static XmlParserStream create(final NormalizedNodeStreamWriter writer, final XmlCodecFactory codecs,
175 final SchemaNode parentNode, final boolean strictParsing) {
176 final DataSchemaNode parent;
177 if (parentNode instanceof DataSchemaNode) {
178 parent = (DataSchemaNode) parentNode;
179 } else if (parentNode instanceof OperationDefinition) {
180 parent = OperationAsContainer.of((OperationDefinition) parentNode);
182 throw new IllegalArgumentException("Illegal parent node " + parentNode);
184 return new XmlParserStream(writer, codecs, parent, strictParsing);
188 * Utility method for use when caching {@link XmlCodecFactory} is not feasible. Users with high performance
189 * requirements should use {@link #create(NormalizedNodeStreamWriter, XmlCodecFactory, SchemaNode)} instead and
190 * maintain a {@link XmlCodecFactory} to match the current {@link SchemaContext}.
192 public static XmlParserStream create(final NormalizedNodeStreamWriter writer, final SchemaContext schemaContext,
193 final SchemaNode parentNode) {
194 return create(writer, schemaContext, parentNode, true);
198 * Utility method for use when caching {@link XmlCodecFactory} is not feasible. Users with high performance
199 * requirements should use {@link #create(NormalizedNodeStreamWriter, XmlCodecFactory, SchemaNode)} instead and
200 * maintain a {@link XmlCodecFactory} to match the current {@link SchemaContext}.
202 public static XmlParserStream create(final NormalizedNodeStreamWriter writer, final SchemaContext schemaContext,
203 final SchemaNode parentNode, final boolean strictParsing) {
204 return create(writer, XmlCodecFactory.create(schemaContext), parentNode, strictParsing);
208 * This method parses the XML source and emits node events into a NormalizedNodeStreamWriter based on the
209 * YANG-modeled data contained in the XML source.
212 * StAX reader which is to used to walk through the XML source
214 * instance of XmlParserStream
215 * @throws XMLStreamException
216 * if a well-formedness error or an unexpected processing condition occurs while parsing the XML
217 * @throws URISyntaxException
218 * if the namespace URI of an XML element contains a syntax error
219 * @throws IOException
220 * if an error occurs while parsing the value of an anyxml node
221 * @throws SAXException
222 * if an error occurs while parsing the value of an anyxml node
224 public XmlParserStream parse(final XMLStreamReader reader) throws XMLStreamException, URISyntaxException,
225 IOException, SAXException {
226 if (reader.hasNext()) {
228 final AbstractNodeDataWithSchema<?> nodeDataWithSchema;
229 if (parentNode instanceof ContainerSchemaNode) {
230 nodeDataWithSchema = new ContainerNodeDataWithSchema((ContainerSchemaNode) parentNode);
231 } else if (parentNode instanceof ListSchemaNode) {
232 nodeDataWithSchema = new ListNodeDataWithSchema((ListSchemaNode) parentNode);
233 } else if (parentNode instanceof YangModeledAnyXmlSchemaNode) {
234 nodeDataWithSchema = new YangModeledAnyXmlNodeDataWithSchema((YangModeledAnyXmlSchemaNode) parentNode);
235 } else if (parentNode instanceof AnyXmlSchemaNode) {
236 nodeDataWithSchema = new AnyXmlNodeDataWithSchema((AnyXmlSchemaNode) parentNode);
237 } else if (parentNode instanceof LeafSchemaNode) {
238 nodeDataWithSchema = new LeafNodeDataWithSchema((LeafSchemaNode) parentNode);
239 } else if (parentNode instanceof LeafListSchemaNode) {
240 nodeDataWithSchema = new LeafListNodeDataWithSchema((LeafListSchemaNode) parentNode);
241 } else if (parentNode instanceof AnyDataSchemaNode) {
242 nodeDataWithSchema = new OpaqueAnydataNodeDataWithSchema((AnyDataSchemaNode) parentNode);
244 throw new IllegalStateException("Unsupported schema node type " + parentNode.getClass() + ".");
247 read(reader, nodeDataWithSchema, reader.getLocalName());
248 nodeDataWithSchema.write(writer);
255 * This method traverses a {@link DOMSource} and emits node events into a NormalizedNodeStreamWriter based on the
256 * YANG-modeled data contained in the source.
259 * {@link DOMSource} to be traversed
261 * instance of XmlParserStream
262 * @throws XMLStreamException
263 * if a well-formedness error or an unexpected processing condition occurs while parsing the XML
264 * @throws URISyntaxException
265 * if the namespace URI of an XML element contains a syntax error
266 * @throws IOException
267 * if an error occurs while parsing the value of an anyxml node
268 * @throws SAXException
269 * if an error occurs while parsing the value of an anyxml node
272 public XmlParserStream traverse(final DOMSource src) throws XMLStreamException, URISyntaxException, IOException,
274 return parse(new DOMSourceXMLStreamReader(src));
277 private ImmutableMap<QName, Object> getElementAttributes(final XMLStreamReader in) {
278 checkState(in.isStartElement(), "Attributes can be extracted only from START_ELEMENT.");
279 final Map<QName, Object> attributes = new LinkedHashMap<>();
281 for (int attrIndex = 0; attrIndex < in.getAttributeCount(); attrIndex++) {
282 final String attributeNS = in.getAttributeNamespace(attrIndex);
284 // Skip namespace definitions
285 if (XMLConstants.XMLNS_ATTRIBUTE_NS_URI.equals(attributeNS)) {
289 final String localName = in.getAttributeLocalName(attrIndex);
290 final String attrValue = in.getAttributeValue(attrIndex);
291 if (Strings.isNullOrEmpty(attributeNS)) {
292 StreamWriterFacade.warnLegacyAttribute(localName);
293 attributes.put(QName.create(LEGACY_ATTRIBUTE_NAMESPACE, localName), attrValue);
297 // Cross-relate attribute namespace to the module
298 final Optional<QNameModule> optModule = resolveXmlNamespace(attributeNS);
299 if (optModule.isPresent()) {
300 final QName qname = QName.create(optModule.get(), localName);
301 final Optional<AnnotationSchemaNode> optAnnotation = AnnotationSchemaNode.find(
302 codecs.getSchemaContext(), qname);
303 if (optAnnotation.isPresent()) {
304 final AnnotationSchemaNode schema = optAnnotation.get();
305 final Object value = codecs.codecFor(schema).parseValue(in.getNamespaceContext(), attrValue);
306 attributes.put(schema.getQName(), value);
310 LOG.debug("Annotation for {} not found, using legacy QName", qname);
313 attributes.put(QName.create(rawXmlNamespace(attributeNS), localName), attrValue);
316 return ImmutableMap.copyOf(attributes);
319 private static Document readAnyXmlValue(final XMLStreamReader in) throws XMLStreamException {
320 // Underlying reader might return null when asked for version, however when such reader is plugged into
321 // Stax -> DOM transformer, it fails with NPE due to null version. Use default xml version in such case.
322 final XMLStreamReader inWrapper;
323 if (in.getVersion() == null) {
324 inWrapper = new StreamReaderDelegate(in) {
326 public String getVersion() {
327 final String ver = super.getVersion();
328 return ver != null ? ver : XML_STANDARD_VERSION;
335 final DOMResult result = new DOMResult();
337 TRANSFORMER_FACTORY.newTransformer().transform(new StAXSource(inWrapper), result);
338 } catch (final TransformerException e) {
339 throw new XMLStreamException("Unable to read anyxml value", e);
341 return (Document) result.getNode();
344 private void readOpaqueAnydataValue(final XMLStreamReader in, final OpaqueAnydataNodeDataWithSchema parent)
345 throws XMLStreamException {
346 final DefaultOpaqueAnydataStreamWriter opaqueWriter = new DefaultOpaqueAnydataStreamWriter();
347 final Entry<OpaqueData, ImmutableNormalizedMetadata> result;
349 final int event = in.next();
352 case XMLStreamConstants.START_ELEMENT:
353 final String nsUri = in.getNamespaceURI();
354 final QNameModule module = resolveXmlNamespace(nsUri).orElseGet(() -> rawXmlNamespace(nsUri));
355 opaqueWriter.startOpaqueContainer(NodeIdentifier.create(QName.create(module,
356 in.getLocalName())));
358 case XMLStreamConstants.END_ELEMENT:
359 opaqueWriter.endOpaqueNode();
361 case XMLStreamConstants.CHARACTERS:
362 opaqueWriter.opaqueValue(in.getText());
365 LOG.debug("Ignoring event {}", event);
368 } catch (IOException e) {
369 throw new XMLStreamException("Inconsistent anydata stream", e);
372 final Entry<OpaqueData, ImmutableNormalizedMetadata> optResult = opaqueWriter.result();
373 if (optResult != null) {
379 setValue(parent, result.getKey(), in.getNamespaceContext());
380 parent.setMetadata(result.getValue());
383 private void read(final XMLStreamReader in, final AbstractNodeDataWithSchema<?> parent, final String rootElement)
384 throws XMLStreamException {
389 if (parent instanceof LeafNodeDataWithSchema || parent instanceof LeafListEntryNodeDataWithSchema) {
390 parent.setAttributes(getElementAttributes(in));
391 setValue((SimpleNodeDataWithSchema<?>) parent, in.getElementText().trim(), in.getNamespaceContext());
392 if (isNextEndDocument(in)) {
396 if (!isAtElement(in)) {
402 if (parent instanceof ListEntryNodeDataWithSchema || parent instanceof ContainerNodeDataWithSchema) {
403 parent.setAttributes(getElementAttributes(in));
406 if (parent instanceof LeafListNodeDataWithSchema || parent instanceof ListNodeDataWithSchema) {
407 String xmlElementName = in.getLocalName();
408 while (xmlElementName.equals(parent.getSchema().getQName().getLocalName())) {
409 read(in, newEntryNode(parent), rootElement);
410 if (in.getEventType() == XMLStreamConstants.END_DOCUMENT
411 || in.getEventType() == XMLStreamConstants.END_ELEMENT) {
414 xmlElementName = in.getLocalName();
420 if (parent instanceof AnyXmlNodeDataWithSchema) {
421 setValue((AnyXmlNodeDataWithSchema) parent, readAnyXmlValue(in), in.getNamespaceContext());
422 if (isNextEndDocument(in)) {
426 if (!isAtElement(in)) {
433 if (parent instanceof OpaqueAnydataNodeDataWithSchema) {
434 parent.setAttributes(getElementAttributes(in));
435 readOpaqueAnydataValue(in, (OpaqueAnydataNodeDataWithSchema) parent);
436 if (isNextEndDocument(in)) {
440 if (!isAtElement(in)) {
447 if (parent instanceof YangModeledAnyXmlSchemaNode) {
448 parent.setAttributes(getElementAttributes(in));
451 switch (in.nextTag()) {
452 case XMLStreamConstants.START_ELEMENT:
453 // FIXME: why do we even need this tracker? either document it or remove it
454 final Set<Entry<String, String>> namesakes = new HashSet<>();
455 while (in.hasNext()) {
456 final String xmlElementName = in.getLocalName();
458 DataSchemaNode parentSchema = parent.getSchema();
460 final String parentSchemaName = parentSchema.getQName().getLocalName();
461 if (parentSchemaName.equals(xmlElementName)
462 && in.getEventType() == XMLStreamConstants.END_ELEMENT) {
463 if (isNextEndDocument(in)) {
467 if (!isAtElement(in)) {
473 if (in.isEndElement() && rootElement.equals(xmlElementName)) {
477 if (parentSchema instanceof YangModeledAnyXmlSchemaNode) {
478 parentSchema = ((YangModeledAnyXmlSchemaNode) parentSchema).getSchemaOfAnyXmlData();
481 final String elementNS = in.getNamespaceURI();
482 if (!namesakes.add(new SimpleImmutableEntry<>(elementNS, xmlElementName))) {
483 throw new XMLStreamException(String.format(
484 "Duplicate namespace \"%s\" element \"%s\" in XML input", elementNS, xmlElementName),
490 nsUri = rawXmlNamespace(elementNS).getNamespace();
491 } catch (IllegalArgumentException e) {
492 throw new XMLStreamException("Failed to convert namespace " + xmlElementName, in.getLocation(),
496 final Deque<DataSchemaNode> childDataSchemaNodes =
497 ParserStreamUtils.findSchemaNodeByNameAndNamespace(parentSchema, xmlElementName, nsUri);
499 if (childDataSchemaNodes.isEmpty()) {
500 if (!strictParsing) {
501 LOG.debug("Skipping unknown node ns=\"{}\" localName=\"{}\" at path {}", elementNS,
502 xmlElementName, parentSchema.getPath());
507 throw new XMLStreamException(String.format(
508 "Schema for node with name %s and namespace %s does not exist at %s", xmlElementName,
509 elementNS, parentSchema.getPath(), in.getLocation()));
512 read(in, ((CompositeNodeDataWithSchema<?>) parent).addChild(childDataSchemaNodes), rootElement);
515 case XMLStreamConstants.END_ELEMENT:
516 if (isNextEndDocument(in)) {
520 if (!isAtElement(in)) {
529 private static boolean isNextEndDocument(final XMLStreamReader in) throws XMLStreamException {
530 return !in.hasNext() || in.next() == XMLStreamConstants.END_DOCUMENT;
533 private static boolean isAtElement(final XMLStreamReader in) {
534 return in.getEventType() == XMLStreamConstants.START_ELEMENT
535 || in.getEventType() == XMLStreamConstants.END_ELEMENT;
538 private static void skipUnknownNode(final XMLStreamReader in) throws XMLStreamException {
539 // in case when the unknown node and at least one of its descendant nodes have the same name
540 // we cannot properly reach the end just by checking if the current node is an end element and has the same name
541 // as the root unknown element. therefore we ignore the names completely and just track the level of nesting
542 int levelOfNesting = 0;
543 while (in.hasNext()) {
544 // in case there are text characters in an element, we cannot skip them by calling nextTag()
545 // therefore we skip them by calling next(), and then proceed to next element
547 if (!isAtElement(in)) {
550 if (in.isStartElement()) {
554 if (in.isEndElement()) {
555 if (levelOfNesting == 0) {
566 private void setValue(final SimpleNodeDataWithSchema<?> parent, final Object value,
567 final NamespaceContext nsContext) {
568 final DataSchemaNode schema = parent.getSchema();
569 final Object prev = parent.getValue();
570 checkArgument(prev == null, "Node '%s' has already set its value to '%s'", schema.getQName(), prev);
571 parent.setValue(translateValueByType(value, schema, nsContext));
574 private Object translateValueByType(final Object value, final DataSchemaNode node,
575 final NamespaceContext namespaceCtx) {
576 if (node instanceof AnyXmlSchemaNode) {
577 checkArgument(value instanceof Document);
579 * FIXME: Figure out some YANG extension dispatch, which will reuse JSON parsing or XML parsing -
580 * anyxml is not well-defined in JSON.
582 return new DOMSource(((Document) value).getDocumentElement());
584 if (node instanceof AnyDataSchemaNode) {
585 checkArgument(value instanceof OpaqueData, "Unexpected anydata value %s", value);
589 checkArgument(node instanceof TypedDataSchemaNode);
590 checkArgument(value instanceof String);
591 return codecs.codecFor((TypedDataSchemaNode) node).parseValue(namespaceCtx, (String) value);
594 private static AbstractNodeDataWithSchema<?> newEntryNode(final AbstractNodeDataWithSchema<?> parent) {
595 final AbstractNodeDataWithSchema<?> newChild;
596 if (parent instanceof ListNodeDataWithSchema) {
597 newChild = ListEntryNodeDataWithSchema.forSchema(((ListNodeDataWithSchema) parent).getSchema());
599 verify(parent instanceof LeafListNodeDataWithSchema, "Unexpected parent %s", parent);
600 newChild = new LeafListEntryNodeDataWithSchema(((LeafListNodeDataWithSchema) parent).getSchema());
602 ((CompositeNodeDataWithSchema<?>) parent).addChild(newChild);
607 public void close() throws IOException {
613 public void flush() throws IOException {
617 private Optional<QNameModule> resolveXmlNamespace(final String xmlNamespace) {
618 return resolvedNamespaces.computeIfAbsent(xmlNamespace, nsUri -> {
619 final Iterator<Module> it = codecs.getSchemaContext().findModules(URI.create(nsUri)).iterator();
620 return it.hasNext() ? Optional.of(it.next().getQNameModule()) : Optional.empty();
624 private QNameModule rawXmlNamespace(final String xmlNamespace) {
625 return rawNamespaces.computeIfAbsent(xmlNamespace, nsUri -> QNameModule.create(URI.create(nsUri)));
628 // Utility writer just to keep the event model intact. This requires us to build an intermediate representation,
629 // simply because we are required to perform list coalescence.
631 // FIXME: 5.0.0: we should be able to negotiate downstream's tolerance to reentrant lists, so that we are not
632 // not required to keep all the book keeping. Immutable builder should not care as long as structure
634 private static final class DefaultOpaqueAnydataStreamWriter extends AbstractImmutableOpaqueAnydataStreamWriter {
635 private Entry<@NonNull OpaqueData, @Nullable ImmutableNormalizedMetadata> result;
637 DefaultOpaqueAnydataStreamWriter() {
641 Entry<@NonNull OpaqueData, @Nullable ImmutableNormalizedMetadata> result() {
646 protected void finishAnydata(final OpaqueData opaqueData, final ImmutableNormalizedMetadata metadata) {
647 checkState(result == null, "Result already set to %s", result);
648 result = new SimpleImmutableEntry<>(requireNonNull(opaqueData), metadata);