+++ /dev/null
-/*
- * Copyright (c) 2015 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.yangtools.yang.data.jaxen;
-
-import static java.util.Objects.requireNonNull;
-
-import com.google.common.base.Joiner;
-import com.google.common.base.Verify;
-import com.google.common.collect.Iterators;
-import com.google.common.collect.UnmodifiableIterator;
-import java.util.Base64;
-import java.util.Iterator;
-import java.util.Map.Entry;
-import java.util.NoSuchElementException;
-import java.util.Set;
-import org.jaxen.DefaultNavigator;
-import org.jaxen.NamedAccessNavigator;
-import org.jaxen.Navigator;
-import org.jaxen.UnsupportedAxisException;
-import org.jaxen.XPath;
-import org.jaxen.saxpath.SAXPathException;
-import org.opendaylight.yangtools.yang.common.QName;
-import org.opendaylight.yangtools.yang.common.QNameModule;
-import org.opendaylight.yangtools.yang.data.api.schema.DataContainerNode;
-import org.opendaylight.yangtools.yang.data.api.schema.LeafNode;
-import org.opendaylight.yangtools.yang.data.api.schema.LeafSetEntryNode;
-import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
-import org.opendaylight.yangtools.yang.model.api.EffectiveModelContext;
-import org.opendaylight.yangtools.yang.model.api.EffectiveModelContextProvider;
-
-/**
- * A {@link Navigator} implementation for YANG XPaths instantiated on a particular root {@link NormalizedNode}.
- */
-final class NormalizedNodeNavigator extends DefaultNavigator
- implements NamedAccessNavigator, EffectiveModelContextProvider {
- private static final long serialVersionUID = 1L;
- private static final Joiner JOINER = Joiner.on(" ").skipNulls();
- private final ConverterNamespaceContext namespaceContext;
- private final JaxenDocument document;
-
- NormalizedNodeNavigator(final ConverterNamespaceContext context, final JaxenDocument document) {
- this.namespaceContext = requireNonNull(context);
- this.document = document;
- }
-
- private static NormalizedNodeContext cast(final Object context) {
- Verify.verify(context instanceof NormalizedNodeContext, "Unhandled context node %s", context);
- return (NormalizedNodeContext) context;
- }
-
- private static NormalizedNode<?, ?> contextNode(final Object context) {
- return cast(context).getNode();
- }
-
- private QName resolveQName(final NormalizedNode<?, ?> node, final String prefix, final String localName) {
- final QNameModule module;
- if (prefix.isEmpty()) {
- module = node.getNodeType().getModule();
- } else {
- module = namespaceContext.convert(prefix);
- }
-
- return QName.create(module, localName);
- }
-
- @SuppressWarnings("unchecked")
- private static Entry<QName, String> attribute(final Object attr) {
- Verify.verify(attr instanceof Entry, "Unhandled attribute %s", attr);
- return (Entry<QName, String>) attr;
- }
-
- @Override
- public String getElementNamespaceUri(final Object element) {
- return contextNode(element).getNodeType().getNamespace().toString();
- }
-
- @Override
- public String getElementName(final Object element) {
- return contextNode(element).getNodeType().getLocalName();
- }
-
- @Override
- public String getElementQName(final Object element) {
- return namespaceContext.jaxenQName(contextNode(element).getNodeType());
- }
-
- @Override
- public String getAttributeNamespaceUri(final Object attr) {
- return attribute(attr).getKey().getNamespace().toString();
- }
-
- @Override
- public String getAttributeName(final Object attr) {
- return attribute(attr).getKey().getLocalName();
- }
-
- @Override
- public String getAttributeQName(final Object attr) {
- return namespaceContext.jaxenQName(attribute(attr).getKey());
- }
-
- @Override
- public NormalizedNodeContext getDocumentNode(final Object contextNode) {
- NormalizedNodeContext ctx = cast(contextNode);
- while (ctx.getParent() != null) {
- ctx = ctx.getParent();
- }
-
- return ctx;
- }
-
- @Override
- public boolean isDocument(final Object object) {
- return cast(object).getParent() == null;
- }
-
- @Override
- public boolean isElement(final Object object) {
- return object instanceof NormalizedNodeContext;
- }
-
- @Override
- public boolean isAttribute(final Object object) {
- return object instanceof Entry;
- }
-
- @Override
- public boolean isNamespace(final Object object) {
- return false;
- }
-
- @Override
- public boolean isComment(final Object object) {
- return false;
- }
-
- @Override
- public boolean isText(final Object object) {
- return object instanceof String;
- }
-
- @Override
- public boolean isProcessingInstruction(final Object object) {
- return false;
- }
-
- @Override
- public String getCommentStringValue(final Object comment) {
- throw new UnsupportedOperationException();
- }
-
- @Override
- public String getElementStringValue(final Object element) {
- final NormalizedNode<?, ?> node = contextNode(element);
- if (node instanceof LeafNode || node instanceof LeafSetEntryNode) {
- final Object value = node.getValue();
-
- // TODO: This is a rather poor approximation of what the codec infrastructure, but it should be sufficient
- // to work for now. Tracking SchemaPath will mean we will need to wrap each NormalizedNode with a
- // corresponding SchemaPath. That in turn would complicate this class and result in a lot of object
- // allocations.
- if (value instanceof byte[]) {
- // Binary
- return Base64.getEncoder().encodeToString((byte[]) value);
- }
- if (value instanceof Set) {
- // Bits
- return JOINER.join((Set<?>)value);
- }
- if (value != null) {
- // Everything else...
- return String.valueOf(value);
- }
- }
-
- return "";
- }
-
- @Override
- public String getAttributeStringValue(final Object attr) {
- return attribute(attr).getValue();
- }
-
- @Override
- public String getNamespaceStringValue(final Object ns) {
- throw new UnsupportedOperationException();
- }
-
- @Override
- public String getTextStringValue(final Object text) {
- return text.toString();
- }
-
- @Override
- public String getNamespacePrefix(final Object ns) {
- throw new UnsupportedOperationException();
- }
-
- @Override
- public XPath parseXPath(final String xpath) throws SAXPathException {
- // FIXME: need to bind YangXPath probably
- throw new UnsupportedOperationException();
- }
-
- @Override
- public Iterator<NormalizedNodeContext> getChildAxisIterator(final Object contextNode) {
- final NormalizedNodeContext ctx = cast(contextNode);
- final NormalizedNode<?, ?> node = ctx.getNode();
- return node instanceof DataContainerNode ? ctx.iterateChildren((DataContainerNode<?>) node) : null;
- }
-
- @Override
- public Iterator<NormalizedNodeContext> getChildAxisIterator(final Object contextNode, final String localName,
- final String namespacePrefix, final String namespaceURI) {
- final NormalizedNodeContext ctx = cast(contextNode);
- final NormalizedNode<?, ?> node = ctx.getNode();
- return node instanceof DataContainerNode
- ? ctx.iterateChildrenNamed((DataContainerNode<?>)node, resolveQName(node, namespacePrefix, localName))
- : null;
- }
-
- @Override
- public Iterator<? extends Entry<?, ?>> getAttributeAxisIterator(final Object contextNode) {
- // FIXME: how do we mix in metadata?
- // final NormalizedNode<?, ?> node = contextNode(contextNode);
- // if (node instanceof AttributesContainer) {
- // final Map<QName, String> attributes = ((AttributesContainer) node).getAttributes();
- // if (attributes.isEmpty()) {
- // return null;
- // }
- //
- // return attributes.entrySet().iterator();
- // }
- return null;
- }
-
- @Override
- public Iterator<? extends Entry<?, ?>> getAttributeAxisIterator(final Object contextNode, final String localName,
- final String namespacePrefix, final String namespaceURI) {
- // FIXME: how do we mix in metadata?
- // final NormalizedNode<?, ?> node = contextNode(contextNode);
- // if (node instanceof AttributesContainer) {
- // final Map<QName, String> attributes = ((AttributesContainer) node).getAttributes();
- // if (attributes.isEmpty()) {
- // return null;
- // }
- //
- // final QName qname = resolveQName(node, namespacePrefix, localName);
- // final String value = attributes.get(qname);
- // return value == null ? null : Iterators.singletonIterator(new SimpleImmutableEntry<>(qname, value));
- // }
- return null;
- }
-
- @Override
- public Iterator<NormalizedNodeContext> getParentAxisIterator(final Object contextNode) {
- final NormalizedNodeContext parent = cast(contextNode).getParent();
- return parent == null ? null : Iterators.singletonIterator(parent);
- }
-
- @Override
- public Iterator<NormalizedNodeContext> getAncestorAxisIterator(final Object contextNode)
- throws UnsupportedAxisException {
- final NormalizedNodeContext parent = cast(contextNode).getParent();
- return parent == null ? null : new NormalizedNodeContextIterator(parent);
- }
-
- @Override
- public Iterator<NormalizedNodeContext> getSelfAxisIterator(final Object contextNode)
- throws UnsupportedAxisException {
- return Iterators.singletonIterator(cast(contextNode));
- }
-
- @Override
- public Iterator<NormalizedNodeContext> getAncestorOrSelfAxisIterator(final Object contextNode)
- throws UnsupportedAxisException {
- return new NormalizedNodeContextIterator(cast(contextNode));
- }
-
- @Override
- public NormalizedNodeContext getParentNode(final Object contextNode) throws UnsupportedAxisException {
- return cast(contextNode).getParent();
- }
-
- @Override
- public EffectiveModelContext getEffectiveModelContext() {
- return document.getEffectiveModelContext();
- }
-
- JaxenDocument getDocument() {
- return document;
- }
-
- private static final class NormalizedNodeContextIterator extends UnmodifiableIterator<NormalizedNodeContext> {
- private NormalizedNodeContext next;
-
- NormalizedNodeContextIterator(final NormalizedNodeContext initial) {
- this.next = requireNonNull(initial);
- }
-
- @Override
- public boolean hasNext() {
- return next != null;
- }
-
- @Override
- public NormalizedNodeContext next() {
- if (next == null) {
- throw new NoSuchElementException();
- }
-
- final NormalizedNodeContext ret = next;
- next = next.getParent();
- return ret;
- }
- }
-}
Code Review / yangtools.git / blobdiff