| /* |
| * Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| import java.io.StringReader; |
| import java.io.StringWriter; |
| import java.util.concurrent.CyclicBarrier; |
| import java.util.concurrent.ExecutorService; |
| import java.util.concurrent.Executors; |
| import java.util.concurrent.TimeUnit; |
| import java.util.concurrent.atomic.AtomicBoolean; |
| |
| import javax.xml.transform.Source; |
| import javax.xml.transform.Templates; |
| import javax.xml.transform.Transformer; |
| import javax.xml.transform.TransformerFactory; |
| import javax.xml.transform.stream.StreamResult; |
| import javax.xml.transform.stream.StreamSource; |
| |
| import org.testng.annotations.Test; |
| import static org.testng.Assert.assertTrue; |
| |
| /* |
| * @test |
| * @bug 8167179 |
| * @run testng/othervm NamespacePrefixTest |
| * @summary This class tests the generation of namespace prefixes |
| */ |
| public class NamespacePrefixTest { |
| |
| @Test |
| public void testReuseTemplates() throws Exception { |
| final TransformerFactory tf = TransformerFactory.newInstance(); |
| final Source xslsrc = new StreamSource(new StringReader(XSL)); |
| final Templates tmpl = tf.newTemplates(xslsrc); |
| for (int i = 0; i < TRANSF_COUNT; i++) { |
| checkResult(doTransformation(tmpl.newTransformer())); |
| } |
| } |
| |
| @Test |
| public void testReuseTransformer() throws Exception { |
| final TransformerFactory tf = TransformerFactory.newInstance(); |
| final Source xslsrc = new StreamSource(new StringReader(XSL)); |
| final Transformer t = tf.newTransformer(xslsrc); |
| for (int i = 0; i < TRANSF_COUNT; i++) { |
| checkResult(doTransformation(t)); |
| } |
| } |
| |
| @Test |
| public void testConcurrentTransformations() throws Exception { |
| final TransformerFactory tf = TransformerFactory.newInstance(); |
| final Source xslsrc = new StreamSource(new StringReader(XSL)); |
| final Templates tmpl = tf.newTemplates(xslsrc); |
| concurrentTestPassed.set(true); |
| |
| // Execute multiple TestWorker tasks |
| for (int id = 0; id < THREADS_COUNT; id++) { |
| EXECUTOR.execute(new TransformerThread(tmpl.newTransformer(), id)); |
| } |
| // Initiate shutdown of previously submitted task |
| EXECUTOR.shutdown(); |
| // Wait for termination of submitted tasks |
| if (!EXECUTOR.awaitTermination(THREADS_COUNT, TimeUnit.SECONDS)) { |
| // If not all tasks terminates during the time out force them to shutdown |
| EXECUTOR.shutdownNow(); |
| } |
| // Check if all transformation threads generated the correct namespace prefix |
| assertTrue(concurrentTestPassed.get()); |
| } |
| |
| // Do one transformation with the provided transformer |
| private static String doTransformation(Transformer t) throws Exception { |
| StringWriter resWriter = new StringWriter(); |
| Source xmlSrc = new StreamSource(new StringReader(XML)); |
| t.transform(xmlSrc, new StreamResult(resWriter)); |
| return resWriter.toString(); |
| } |
| |
| // Check if the transformation result string contains the |
| // element with the exact namespace prefix generated. |
| private static void checkResult(String result) { |
| // Check prefix of 'Element2' element, it should always be the same |
| assertTrue(result.contains(EXPECTED_CONTENT)); |
| } |
| |
| // Check if the transformation result string contains the element with |
| // the exact namespace prefix generated by current thread. |
| // If the expected prefix is not found and there was no failures observed by |
| // other test threads then mark concurrent test as failed. |
| private static void checkThreadResult(String result, int id) { |
| boolean res = result.contains(EXPECTED_CONTENT); |
| System.out.printf("%d: transformation result: %s%n", id, res ? "Pass" : "Fail"); |
| if (!res) { |
| System.out.printf("%d result:%s%n", id, result); |
| } |
| concurrentTestPassed.compareAndSet(true, res); |
| } |
| |
| // TransformerThread task that does the transformation similar |
| // to testReuseTransformer test method |
| private class TransformerThread implements Runnable { |
| |
| private final Transformer transformer; |
| private final int id; |
| |
| TransformerThread(Transformer transformer, int id) { |
| this.transformer = transformer; |
| this.id = id; |
| } |
| |
| @Override |
| public void run() { |
| try { |
| System.out.printf("%d: waiting for barrier%n", id); |
| //Synchronize startup of all tasks |
| BARRIER.await(); |
| System.out.printf("%d: starting transformation%n", id); |
| checkThreadResult(doTransformation(transformer), id); |
| } catch (Exception ex) { |
| throw new RuntimeException("TransformerThread " + id + " failed", ex); |
| } |
| } |
| } |
| |
| // Number of subsequent transformations |
| private static final int TRANSF_COUNT = 10; |
| |
| // Number of transformer threads running concurently |
| private static final int THREADS_COUNT = 10; |
| |
| // Variable for storing the concurrent transformation test result. It is |
| // updated by transformer threads |
| private static final AtomicBoolean concurrentTestPassed = new AtomicBoolean(true); |
| |
| // Cyclic barrier for threads startup synchronization |
| private static final CyclicBarrier BARRIER = new CyclicBarrier(THREADS_COUNT); |
| |
| // Thread pool |
| private static final ExecutorService EXECUTOR = Executors.newCachedThreadPool(); |
| |
| // XSL that transforms XML and produces unique namespace prefixes for each element |
| private final static String XSL = "<xsl:stylesheet version=\"1.0\" xmlns:xsl=\"http://www.w3.org/1999/XSL/Transform\">\n" |
| + " <xsl:template match=\"node()|@*\" priority=\"1\">\n" |
| + " <xsl:copy>\n" |
| + " <xsl:apply-templates select=\"node()|@*\"/>\n" |
| + " </xsl:copy>\n" |
| + " </xsl:template>\n" |
| + " <xsl:template match=\"*\" priority=\"2\">\n" |
| + " <xsl:element name=\"{name()}\" namespace=\"{namespace-uri()}\">\n" |
| + " <xsl:apply-templates select=\"node()|@*\"/>\n" |
| + " </xsl:element>\n" |
| + " </xsl:template>\n" |
| + "</xsl:stylesheet>"; |
| |
| // Simple XML content with root and two child elements |
| private final static String XML = "<TestRoot xmlns=\"test.xmlns\">\n" |
| + " <Element1 xmlns=\"test.xmlns\">\n" |
| + " </Element1>\n" |
| + " <Element2 xmlns=\"test.xmlns\">\n" |
| + " </Element2>\n" |
| + "</TestRoot>"; |
| |
| // With thread local namespace prefix index each transformation result should |
| // be the same and contain the same prefix for Element2 |
| private final static String EXPECTED_CONTENT = "</ns2:Element2>"; |
| |
| } |