--- /dev/null
+/*
+ * Copyright (c) 2013 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.controller.remote.rpc.utils;
+
+import com.google.common.base.Function;
+import com.google.common.base.Objects;
+import com.google.common.base.Optional;
+import com.google.common.base.Preconditions;
+import com.google.common.base.Strings;
+import com.google.common.collect.ImmutableList;
+import org.opendaylight.yangtools.yang.common.QName;
+import org.opendaylight.yangtools.yang.data.api.CompositeNode;
+import org.opendaylight.yangtools.yang.data.api.ModifyAction;
+import org.opendaylight.yangtools.yang.data.api.Node;
+import org.opendaylight.yangtools.yang.data.impl.ImmutableCompositeNode;
+import org.opendaylight.yangtools.yang.data.impl.SimpleNodeTOImpl;
+import org.opendaylight.yangtools.yang.data.impl.codec.TypeDefinitionAwareCodec;
+import org.opendaylight.yangtools.yang.data.impl.codec.xml.XmlCodecProvider;
+import org.opendaylight.yangtools.yang.model.api.ChoiceCaseNode;
+import org.opendaylight.yangtools.yang.model.api.ChoiceNode;
+import org.opendaylight.yangtools.yang.model.api.ContainerSchemaNode;
+import org.opendaylight.yangtools.yang.model.api.DataNodeContainer;
+import org.opendaylight.yangtools.yang.model.api.DataSchemaNode;
+import org.opendaylight.yangtools.yang.model.api.LeafListSchemaNode;
+import org.opendaylight.yangtools.yang.model.api.LeafSchemaNode;
+import org.opendaylight.yangtools.yang.model.api.ListSchemaNode;
+import org.opendaylight.yangtools.yang.model.api.SchemaContext;
+import org.opendaylight.yangtools.yang.model.api.SchemaNode;
+import org.opendaylight.yangtools.yang.model.api.TypeDefinition;
+import org.opendaylight.yangtools.yang.model.api.type.IdentityrefTypeDefinition;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.w3c.dom.Attr;
+import org.w3c.dom.Document;
+import org.w3c.dom.Element;
+import org.w3c.dom.NodeList;
+
+import javax.activation.UnsupportedDataTypeException;
+import javax.xml.parsers.DocumentBuilder;
+import javax.xml.parsers.DocumentBuilderFactory;
+import javax.xml.parsers.ParserConfigurationException;
+import javax.xml.stream.XMLOutputFactory;
+import javax.xml.stream.XMLStreamException;
+import javax.xml.stream.XMLStreamWriter;
+import javax.xml.transform.dom.DOMResult;
+import java.net.URI;
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.List;
+
+import static com.google.common.base.Preconditions.checkState;
+
+public class XmlDocumentUtils {
+ private static class ElementWithSchemaContext {
+ Element element;
+ SchemaContext schemaContext;
+
+ ElementWithSchemaContext(final Element element,final SchemaContext schemaContext) {
+ this.schemaContext = schemaContext;
+ this.element = element;
+ }
+
+ Element getElement() {
+ return element;
+ }
+
+ SchemaContext getSchemaContext() {
+ return schemaContext;
+ }
+ }
+
+ public static final QName OPERATION_ATTRIBUTE_QNAME = QName.create(URI.create("urn:ietf:params:xml:ns:netconf:base:1.0"), null, "operation");
+ private static final Logger logger = LoggerFactory.getLogger(XmlDocumentUtils.class);
+ private static final XMLOutputFactory FACTORY = XMLOutputFactory.newFactory();
+
+ /**
+ * Converts Data DOM structure to XML Document for specified XML Codec Provider and corresponding
+ * Data Node Container schema. The CompositeNode data parameter enters as root of Data DOM tree and will
+ * be transformed to root in XML Document. Each element of Data DOM tree is compared against specified Data
+ * Node Container Schema and transformed accordingly.
+ *
+ * @param data Data DOM root element
+ * @param schema Data Node Container Schema
+ * @param codecProvider XML Codec Provider
+ * @return new instance of XML Document
+ * @throws javax.activation.UnsupportedDataTypeException
+ */
+ public static Document toDocument(final CompositeNode data, final DataNodeContainer schema, final XmlCodecProvider codecProvider)
+ throws UnsupportedDataTypeException {
+ Preconditions.checkNotNull(data);
+ Preconditions.checkNotNull(schema);
+
+ if (!(schema instanceof ContainerSchemaNode || schema instanceof ListSchemaNode)) {
+ throw new UnsupportedDataTypeException("Schema can be ContainerSchemaNode or ListSchemaNode. Other types are not supported yet.");
+ }
+
+ final DOMResult result = new DOMResult(getDocument());
+ try {
+ final XMLStreamWriter writer = FACTORY.createXMLStreamWriter(result);
+ XmlStreamUtils.create(codecProvider).writeDocument(writer, data, (SchemaNode)schema);
+ writer.close();
+ return (Document)result.getNode();
+ } catch (XMLStreamException e) {
+ logger.error("Failed to serialize data {}", data, e);
+ return null;
+ }
+ }
+
+ public static Document getDocument() {
+ DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
+ Document doc = null;
+ try {
+ DocumentBuilder bob = dbf.newDocumentBuilder();
+ doc = bob.newDocument();
+ } catch (ParserConfigurationException e) {
+ throw new RuntimeException(e);
+ }
+ return doc;
+ }
+
+
+ public static QName qNameFromElement(final Element xmlElement) {
+ String namespace = xmlElement.getNamespaceURI();
+ String localName = xmlElement.getLocalName();
+ return QName.create(namespace != null ? URI.create(namespace) : null, null, localName);
+ }
+
+ private static Node<?> toNodeWithSchema(final Element xmlElement, final DataSchemaNode schema, final XmlCodecProvider codecProvider,final SchemaContext schemaCtx) {
+ checkQName(xmlElement, schema.getQName());
+ if (schema instanceof DataNodeContainer) {
+ return toCompositeNodeWithSchema(xmlElement, schema.getQName(), (DataNodeContainer) schema, codecProvider,schemaCtx);
+ } else if (schema instanceof LeafSchemaNode) {
+ return toSimpleNodeWithType(xmlElement, (LeafSchemaNode) schema, codecProvider,schemaCtx);
+ } else if (schema instanceof LeafListSchemaNode) {
+ return toSimpleNodeWithType(xmlElement, (LeafListSchemaNode) schema, codecProvider,schemaCtx);
+ }
+ return null;
+ }
+
+
+
+ private static Node<?> toSimpleNodeWithType(final Element xmlElement, final LeafSchemaNode schema,
+ final XmlCodecProvider codecProvider,final SchemaContext schemaCtx) {
+ TypeDefinitionAwareCodec<? extends Object, ? extends TypeDefinition<?>> codec = codecProvider.codecFor(schema.getType());
+ String text = xmlElement.getTextContent();
+ Object value = null;
+ if (codec != null) {
+ value = codec.deserialize(text);
+ }
+ final TypeDefinition<?> baseType = XmlUtils.resolveBaseTypeFrom(schema.getType());
+ if (baseType instanceof org.opendaylight.yangtools.yang.model.util.InstanceIdentifier) {
+ value = InstanceIdentifierForXmlCodec.deserialize(xmlElement,schemaCtx);
+ } else if(baseType instanceof IdentityrefTypeDefinition){
+ value = InstanceIdentifierForXmlCodec.toIdentity(xmlElement.getTextContent(), xmlElement, schemaCtx);
+ }
+
+ if (value == null) {
+ value = xmlElement.getTextContent();
+ }
+
+ Optional<ModifyAction> modifyAction = getModifyOperationFromAttributes(xmlElement);
+ return new SimpleNodeTOImpl<>(schema.getQName(), null, value, modifyAction.orNull());
+ }
+
+ private static Node<?> toSimpleNodeWithType(final Element xmlElement, final LeafListSchemaNode schema,
+ final XmlCodecProvider codecProvider,final SchemaContext schemaCtx) {
+ TypeDefinitionAwareCodec<? extends Object, ? extends TypeDefinition<?>> codec = codecProvider.codecFor(schema.getType());
+ String text = xmlElement.getTextContent();
+ Object value = null;
+ if (codec != null) {
+ value = codec.deserialize(text);
+ }
+ if (schema.getType() instanceof org.opendaylight.yangtools.yang.model.util.InstanceIdentifier) {
+ value = InstanceIdentifierForXmlCodec.deserialize(xmlElement,schemaCtx);
+ }
+ if (value == null) {
+ value = xmlElement.getTextContent();
+ }
+
+ Optional<ModifyAction> modifyAction = getModifyOperationFromAttributes(xmlElement);
+ return new SimpleNodeTOImpl<>(schema.getQName(), null, value, modifyAction.orNull());
+ }
+
+ private static Node<?> toCompositeNodeWithSchema(final Element xmlElement, final QName qName, final DataNodeContainer schema,
+ final XmlCodecProvider codecProvider,final SchemaContext schemaCtx) {
+ List<Node<?>> values = toDomNodes(xmlElement, Optional.fromNullable(schema.getChildNodes()),schemaCtx);
+ Optional<ModifyAction> modifyAction = getModifyOperationFromAttributes(xmlElement);
+ return ImmutableCompositeNode.create(qName, values, modifyAction.orNull());
+ }
+
+ private static Optional<ModifyAction> getModifyOperationFromAttributes(final Element xmlElement) {
+ Attr attributeNodeNS = xmlElement.getAttributeNodeNS(OPERATION_ATTRIBUTE_QNAME.getNamespace().toString(), OPERATION_ATTRIBUTE_QNAME.getLocalName());
+ if(attributeNodeNS == null) {
+ return Optional.absent();
+ }
+
+ ModifyAction action = ModifyAction.fromXmlValue(attributeNodeNS.getValue());
+ Preconditions.checkArgument(action.isOnElementPermitted(), "Unexpected operation %s on %s", action, xmlElement);
+
+ return Optional.of(action);
+ }
+
+ private static void checkQName(final Element xmlElement, final QName qName) {
+ checkState(Objects.equal(xmlElement.getNamespaceURI(), qName.getNamespace().toString()));
+ checkState(qName.getLocalName().equals(xmlElement.getLocalName()));
+ }
+
+ public static final Optional<DataSchemaNode> findFirstSchema(final QName qname, final Collection<DataSchemaNode> dataSchemaNode) {
+ if (dataSchemaNode != null && !dataSchemaNode.isEmpty() && qname != null) {
+ for (DataSchemaNode dsn : dataSchemaNode) {
+ if (qname.isEqualWithoutRevision(dsn.getQName())) {
+ return Optional.<DataSchemaNode> of(dsn);
+ } else if (dsn instanceof ChoiceNode) {
+ for (ChoiceCaseNode choiceCase : ((ChoiceNode) dsn).getCases()) {
+ Optional<DataSchemaNode> foundDsn = findFirstSchema(qname, choiceCase.getChildNodes());
+ if (foundDsn != null && foundDsn.isPresent()) {
+ return foundDsn;
+ }
+ }
+ }
+ }
+ }
+ return Optional.absent();
+ }
+
+ private static Node<?> toDomNode(Element element) {
+ QName qname = qNameFromElement(element);
+
+ ImmutableList.Builder<Node<?>> values = ImmutableList.<Node<?>> builder();
+ NodeList nodes = element.getChildNodes();
+ boolean isSimpleObject = true;
+ String value = null;
+ for (int i = 0; i < nodes.getLength(); i++) {
+ org.w3c.dom.Node child = nodes.item(i);
+ if (child instanceof Element) {
+ isSimpleObject = false;
+ values.add(toDomNode((Element) child));
+ }
+ if (isSimpleObject && child instanceof org.w3c.dom.Text) {
+ value = element.getTextContent();
+ if (!Strings.isNullOrEmpty(value)) {
+ isSimpleObject = true;
+ }
+ }
+ }
+ if (isSimpleObject) {
+ return new SimpleNodeTOImpl<>(qname, null, value);
+ }
+ return ImmutableCompositeNode.create(qname, values.build());
+ }
+
+ public static List<Node<?>> toDomNodes(final Element element, final Optional<Collection<DataSchemaNode>> context,SchemaContext schemaCtx) {
+ return forEachChild(element.getChildNodes(),schemaCtx, new Function<ElementWithSchemaContext, Optional<Node<?>>>() {
+
+ @Override
+ public Optional<Node<?>> apply(ElementWithSchemaContext input) {
+ if (context.isPresent()) {
+ QName partialQName = qNameFromElement(input.getElement());
+ Optional<DataSchemaNode> schemaNode = XmlDocumentUtils.findFirstSchema(partialQName, context.get());
+ if (schemaNode.isPresent()) {
+ return Optional.<Node<?>> fromNullable(//
+ toNodeWithSchema(input.getElement(), schemaNode.get(), XmlDocumentUtils.defaultValueCodecProvider(),input.getSchemaContext()));
+ }
+ }
+ return Optional.<Node<?>> fromNullable(toDomNode(input.getElement()));
+ }
+
+ });
+
+ }
+
+ private static final <T> List<T> forEachChild(final NodeList nodes, final SchemaContext schemaContext, final Function<ElementWithSchemaContext, Optional<T>> forBody) {
+ final int l = nodes.getLength();
+ if (l == 0) {
+ return ImmutableList.of();
+ }
+
+ final List<T> list = new ArrayList<>(l);
+ for (int i = 0; i < l; i++) {
+ org.w3c.dom.Node child = nodes.item(i);
+ if (child instanceof Element) {
+ Optional<T> result = forBody.apply(new ElementWithSchemaContext((Element) child,schemaContext));
+ if (result.isPresent()) {
+ list.add(result.get());
+ }
+ }
+ }
+ return ImmutableList.copyOf(list);
+ }
+
+ public static final XmlCodecProvider defaultValueCodecProvider() {
+ return XmlUtils.DEFAULT_XML_CODEC_PROVIDER;
+ }
+}
Code Review / controller.git / blobdiff