-/*
- * Copyright (c) 2014 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.netconf.util;
-
-import java.io.ByteArrayInputStream;
-import java.io.ByteArrayOutputStream;
-import java.io.StringWriter;
-
-import javax.xml.parsers.DocumentBuilder;
-import javax.xml.parsers.DocumentBuilderFactory;
-import javax.xml.parsers.ParserConfigurationException;
-import javax.xml.transform.OutputKeys;
-import javax.xml.transform.Transformer;
-import javax.xml.transform.TransformerException;
-import javax.xml.transform.TransformerFactory;
-import javax.xml.transform.TransformerFactoryConfigurationError;
-import javax.xml.transform.dom.DOMResult;
-import javax.xml.transform.dom.DOMSource;
-import javax.xml.transform.sax.SAXResult;
-import javax.xml.transform.sax.SAXTransformerFactory;
-import javax.xml.transform.sax.TransformerHandler;
-import javax.xml.transform.stream.StreamResult;
-
-import org.junit.Ignore;
-import org.junit.Test;
-import org.openexi.proc.common.AlignmentType;
-import org.openexi.proc.common.GrammarOptions;
-import org.openexi.proc.grammars.GrammarCache;
-import org.openexi.sax.EXIReader;
-import org.openexi.sax.Transmogrifier;
-import org.w3c.dom.Document;
-import org.w3c.dom.Element;
-import org.xml.sax.InputSource;
-
-/**
- * This test case tests nagasena library used for exi encode/decode.
- *
- * This library does not work correctly, since it is impossible to encode and then decode DOM xml.
- * Encoding DOM using sax Transformer produces invalid xml, that cannot be decoded (Problem seems to be the namespace handling).
- *
- */
-@Ignore
-public class EXILibTest {
-
- public static final AlignmentType ALIGNMENT_TYPE = AlignmentType.preCompress;
-
- @Test
- public void testExiLibWithSaxTransformer() throws Exception {
- final byte[] encode = encodeEXI(getDom2());
- final byte[] encodeWithTransformer = encodeEXITransformer(getDom2());
-
- // System.err.println(Arrays.toString(encode));
- // System.err.println(Arrays.toString(encodeWithTransformer));
-
- // This works fine (encoded from string)
- decodeEXI(encode);
- // Error, encoded from Dom with Transformer cannot be decoded, Exception is thrown
- //
- // either:
- // org.w3c.dom.DOMException: NAMESPACE_ERR: An attempt is made to create or change an object in a way which is incorrect with regard to namespaces.
- //
- // or:
- // java.lang.NullPointerException
- //
- // depends on GrammarOptions.addNS(go); option set
- decodeEXI(encodeWithTransformer);
- }
-
- private static final SAXTransformerFactory saxTransformerFactory = (SAXTransformerFactory)SAXTransformerFactory.newInstance();
-
- public static byte[] encodeEXITransformer(final Element xml) throws Exception {
- final Transmogrifier transmogrifier = new Transmogrifier();
-
- transmogrifier.setAlignmentType(ALIGNMENT_TYPE);
-
- final ByteArrayOutputStream out = new ByteArrayOutputStream();
-
- transmogrifier.setGrammarCache(getGrammarCache());
-
- transmogrifier.setOutputStream(out);
-
- final Transformer transformer = saxTransformerFactory.newTransformer();
- transformer.transform(new DOMSource(xml), new SAXResult(transmogrifier.getSAXTransmogrifier()));
-
- return out.toByteArray();
- }
-
- public static byte[] encodeEXI(final Element xml) throws Exception {
- final Transmogrifier transmogrifier = new Transmogrifier();
-
- transmogrifier.setAlignmentType(ALIGNMENT_TYPE);
-
- final ByteArrayOutputStream out = new ByteArrayOutputStream();
-
- transmogrifier.setGrammarCache(getGrammarCache());
-
- transmogrifier.setOutputStream(out);
-
- transmogrifier.encode(new InputSource(new ByteArrayInputStream(toString(xml, false).getBytes())));
-
- out.flush();
-
- return out.toByteArray();
- }
-
- private static GrammarCache getGrammarCache() {
- short go = GrammarOptions.DEFAULT_OPTIONS;
-
- // This option on or off, nagasena still fails
-// go = GrammarOptions.addNS(go);
-
- return new GrammarCache(null, go);
- }
-
- public static Document decodeEXI(final byte[] input) throws Exception {
-
- final GrammarCache grammarCache;
- final DOMResult domResult = new DOMResult();
-
- try(ByteArrayInputStream in = new ByteArrayInputStream(input)) {
-
- final EXIReader reader = new EXIReader();
-
- reader.setAlignmentType(ALIGNMENT_TYPE);
- grammarCache = getGrammarCache();
-
- reader.setGrammarCache(grammarCache);
-
- final SAXTransformerFactory transformerFactory
- = (SAXTransformerFactory) TransformerFactory.newInstance();
- final TransformerHandler handler = transformerFactory.newTransformerHandler();
- handler.setResult(domResult);
-
- reader.setContentHandler(handler);
-
- reader.parse(new InputSource(in));
- }
-
- return (Document) domResult.getNode();
- }
-
- public static Element getDom() {
- final Element dom;
-
- final Document d = newDocument();
-
- dom = d.createElement("rpc");
- dom.setAttribute("xmlns", "a.b.c");
- dom.setAttribute("message-id", "id");
- dom.appendChild(d.createElement("inner"));
-
- return dom;
- }
-
- public static Element getDom2() {
- final Element dom;
-
- final Document d = newDocument();
-
- dom = d.createElementNS("a.b.c", "rpc");
- dom.setAttribute("message-id", "id");
- dom.appendChild(d.createElement("inner"));
-
- return dom;
- }
-
- private static final DocumentBuilderFactory BUILDERFACTORY;
-
- static {
- final DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
- factory.setNamespaceAware(true);
- factory.setCoalescing(true);
- factory.setIgnoringElementContentWhitespace(true);
- factory.setIgnoringComments(true);
- BUILDERFACTORY = factory;
- }
-
- private static Document newDocument() {
- try {
- final DocumentBuilder builder = BUILDERFACTORY.newDocumentBuilder();
- return builder.newDocument();
- } catch (final ParserConfigurationException e) {
- throw new RuntimeException("Failed to create document", e);
- }
- }
-
- private static String toString(final Element xml, final boolean addXmlDeclaration) {
- try {
- final Transformer transformer = TransformerFactory.newInstance().newTransformer();
- transformer.setOutputProperty(OutputKeys.INDENT, "yes");
- transformer.setOutputProperty(OutputKeys.OMIT_XML_DECLARATION, addXmlDeclaration ? "no" : "yes");
-
- final StreamResult result = new StreamResult(new StringWriter());
- final DOMSource source = new DOMSource(xml);
- transformer.transform(source, result);
-
- return result.getWriter().toString();
- } catch (IllegalArgumentException | TransformerFactoryConfigurationError | TransformerException e) {
- throw new RuntimeException("Unable to serialize xml element " + xml, e);
- }
- }
-}
Code Review / controller.git / commitdiff