*/
package org.opendaylight.controller.xml.codec;
-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 java.net.URI;
+import java.util.Collection;
+import javax.xml.parsers.DocumentBuilder;
+import javax.xml.parsers.DocumentBuilderFactory;
+import javax.xml.parsers.ParserConfigurationException;
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.ChoiceSchemaNode;
-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.opendaylight.yangtools.yang.model.util.InstanceIdentifierType;
-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 LOG = 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) {
- LOG.error("Failed to serialize data {}", data, e);
- return null;
- }
- }
public static Document getDocument() {
- DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
+ final DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
Document doc = null;
try {
- DocumentBuilder bob = dbf.newDocumentBuilder();
+ final DocumentBuilder bob = dbf.newDocumentBuilder();
doc = bob.newDocument();
- } catch (ParserConfigurationException e) {
+ } catch (final ParserConfigurationException e) {
throw new RuntimeException(e);
}
return doc;
public static QName qNameFromElement(final Element xmlElement) {
- String namespace = xmlElement.getNamespaceURI();
- String localName = xmlElement.getLocalName();
+ final String namespace = xmlElement.getNamespaceURI();
+ final 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, 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) {
- LOG.debug("toSimpleNodeWithType: found codec, deserializing text {}", text);
- value = codec.deserialize(text);
- }
-
- final TypeDefinition<?> baseType = XmlUtils.resolveBaseTypeFrom(schema.getType());
- if (baseType instanceof InstanceIdentifierType) {
- LOG.debug("toSimpleNodeWithType: base type of node is instance identifier, deserializing element", xmlElement);
- value = InstanceIdentifierForXmlCodec.deserialize(xmlElement,schemaCtx);
-
- } else if(baseType instanceof IdentityrefTypeDefinition){
- LOG.debug("toSimpleNodeWithType: base type of node is IdentityrefTypeDefinition, deserializing element", xmlElement);
- value = InstanceIdentifierForXmlCodec.toIdentity(xmlElement.getTextContent(), xmlElement, schemaCtx);
-
- }
-
- if (value == null) {
- LOG.debug("toSimpleNodeWithType: no type found for element, returning just the text string value of element {}", xmlElement);
- 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) {
- LOG.debug("toSimpleNodeWithType: found codec, deserializing text {}", text);
- value = codec.deserialize(text);
- }
-
- final TypeDefinition<?> baseType = XmlUtils.resolveBaseTypeFrom(schema.getType());
- if (baseType instanceof InstanceIdentifierType) {
- LOG.debug("toSimpleNodeWithType: base type of node is instance identifier, deserializing element", xmlElement);
- value = InstanceIdentifierForXmlCodec.deserialize(xmlElement,schemaCtx);
- }
-
- if (value == null) {
- LOG.debug("toSimpleNodeWithType: no type found for element, returning just the text string value of element {}", xmlElement);
- 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 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) {
+ for (final DataSchemaNode dsn : dataSchemaNode) {
if (qname.isEqualWithoutRevision(dsn.getQName())) {
return Optional.<DataSchemaNode> of(dsn);
} else if (dsn instanceof ChoiceSchemaNode) {
- for (ChoiceCaseNode choiceCase : ((ChoiceSchemaNode) dsn).getCases()) {
- Optional<DataSchemaNode> foundDsn = findFirstSchema(qname, choiceCase.getChildNodes());
+ for (final ChoiceCaseNode choiceCase : ((ChoiceSchemaNode) dsn).getCases()) {
+ final 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