changeset 10861:30a949586d30

8044627: Update JNDI to work with modules Reviewed-by: alanb, chegar
author prappo
date Thu, 16 Oct 2014 12:34:07 +0100
parents 00382c7828ca
children 882f47790152
files src/java.naming/share/classes/javax/naming/spi/NamingManager.java test/javax/naming/spi/providers/InitialContextTest.java test/javax/naming/spi/providers/broken_factory.template test/javax/naming/spi/providers/factory.template test/javax/naming/spi/providers/test.template
diffstat 5 files changed, 816 insertions(+), 19 deletions(-) [+]
line wrap: on
line diff
--- a/src/java.naming/share/classes/javax/naming/spi/NamingManager.java	Thu Oct 16 10:50:17 2014 +0100
+++ b/src/java.naming/share/classes/javax/naming/spi/NamingManager.java	Thu Oct 16 12:34:07 2014 +0100
@@ -25,9 +25,7 @@
 
 package javax.naming.spi;
 
-import java.util.Enumeration;
-import java.util.Hashtable;
-import java.util.StringTokenizer;
+import java.util.*;
 import java.net.MalformedURLException;
 
 import javax.naming.*;
@@ -625,15 +623,28 @@
     /**
      * Creates an initial context using the specified environment
      * properties.
-     *<p>
-     * If an InitialContextFactoryBuilder has been installed,
-     * it is used to create the factory for creating the initial context.
-     * Otherwise, the class specified in the
-     * <tt>Context.INITIAL_CONTEXT_FACTORY</tt> environment property is used.
-     * Note that an initial context factory (an object that implements the
-     * InitialContextFactory interface) must be public and must have a
-     * public constructor that accepts no arguments.
-     *
+     * <p>
+     * This is done as follows:
+     * <ul>
+     * <li>If an InitialContextFactoryBuilder has been installed,
+     *     it is used to create the factory for creating the initial
+     *     context</li>
+     * <li>Otherwise, the class specified in the
+     *     <tt>Context.INITIAL_CONTEXT_FACTORY</tt> environment property
+     *     is used
+     *     <ul>
+     *     <li>First, the {@linkplain java.util.ServiceLoader ServiceLoader}
+     *         mechanism tries to locate an {@code InitialContextFactory}
+     *         provider using the current thread's context class loader</li>
+     *     <li>Failing that, this implementation tries to locate a suitable
+     *         {@code InitialContextFactory} using a built-in mechanism
+     *         <br>
+     *         (Note that an initial context factory (an object that implements
+     *         the InitialContextFactory interface) must be public and must have
+     *         a public constructor that accepts no arguments)</li>
+     *     </ul>
+     * </li>
+     * </ul>
      * @param env The possibly null environment properties used when
      *                  creating the context.
      * @return A non-null initial context.
@@ -649,11 +660,11 @@
      */
     public static Context getInitialContext(Hashtable<?,?> env)
         throws NamingException {
-        InitialContextFactory factory;
+        InitialContextFactory factory = null;
 
         InitialContextFactoryBuilder builder = getInitialContextFactoryBuilder();
         if (builder == null) {
-            // No factory installed, use property
+            // No builder installed, use property
             // Get initial context factory class name
 
             String className = env != null ?
@@ -666,16 +677,39 @@
                 throw ne;
             }
 
+            ServiceLoader<InitialContextFactory> loader =
+                    ServiceLoader.load(InitialContextFactory.class);
+
+            Iterator<InitialContextFactory> iterator = loader.iterator();
             try {
-                factory = (InitialContextFactory)
-                    helper.loadClass(className).newInstance();
-            } catch(Exception e) {
+                while (iterator.hasNext()) {
+                    InitialContextFactory f = iterator.next();
+                    if (f.getClass().getName().equals(className)) {
+                        factory = f;
+                        break;
+                    }
+                }
+            } catch (ServiceConfigurationError e) {
                 NoInitialContextException ne =
-                    new NoInitialContextException(
-                        "Cannot instantiate class: " + className);
+                        new NoInitialContextException(
+                                "Cannot load initial context factory "
+                                        + "'" + className + "'");
                 ne.setRootCause(e);
                 throw ne;
             }
+
+            if (factory == null) {
+                try {
+                    factory = (InitialContextFactory)
+                            helper.loadClass(className).newInstance();
+                } catch (Exception e) {
+                    NoInitialContextException ne =
+                            new NoInitialContextException(
+                                    "Cannot instantiate class: " + className);
+                    ne.setRootCause(e);
+                    throw ne;
+                }
+            }
         } else {
             factory = builder.createInitialContextFactory(env);
         }
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/javax/naming/spi/providers/InitialContextTest.java	Thu Oct 16 12:34:07 2014 +0100
@@ -0,0 +1,372 @@
+/*
+ * Copyright (c) 2014, 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 javax.naming.Context;
+import java.io.*;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+import java.util.*;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.List;
+import java.util.function.Function;
+import java.util.stream.Collectors;
+import java.util.stream.Stream;
+
+import static java.lang.String.format;
+import static java.util.Arrays.asList;
+import static java.util.Collections.singleton;
+import static java.util.Collections.singletonMap;
+
+/*
+ * @test
+ * @bug 8044627
+ * @summary Examines different ways JNDI providers can hook up themselves and
+ *          become available. Each case mimics the most straightforward way of
+ *          executing scenarios.
+ */
+public class InitialContextTest {
+
+    public static void main(String[] args) throws Throwable {
+        unknownInitialContextFactory();
+        initialContextFactoryInAJar();
+        initialContextFactoryAsService();
+    }
+
+    private static void unknownInitialContextFactory() throws Throwable {
+
+        // This is a parameter of this test case, it should work for any value
+        // of it, provided a class with this FQN is not available in a runtime.
+        // So pick any name you like.
+        String factoryClassFqn =
+                "net.java.openjdk.test.UnknownInitialContextFactory";
+
+        Path tmp = Files.createDirectory(Paths.get("InitialContextTest-1"));
+
+        Path src = templatesHome().resolve("test.template");
+        Path dst = tmp.resolve("Test.java");
+        Files.copy(src, dst);
+
+        javac(tmp, dst);
+
+        Path build = Files.createDirectory(tmp.resolve("build"));
+        Files.copy(tmp.resolve("Test.class"), build.resolve("Test.class"));
+
+        Map<String, String> props
+                = singletonMap(Context.INITIAL_CONTEXT_FACTORY, factoryClassFqn);
+
+        Result r = java(props, singleton(build), "Test");
+
+        if (r.exitValue == 0 || !r.output.startsWith(
+                stackTraceStringForClassNotFound(factoryClassFqn))) {
+            throw new RuntimeException(
+                    "Expected a different kind of failure: " + r.output);
+        }
+    }
+
+    private static String stackTraceStringForClassNotFound(String fqn) {
+        return String.format(
+                "Exception in thread \"main\" javax.naming.NoInitialContextException: "
+                        + "Cannot instantiate class: %s "
+                        + "[Root exception is java.lang.ClassNotFoundException: %s]",
+                fqn, fqn);
+    }
+
+    private static void initialContextFactoryInAJar() throws Throwable {
+
+        String factoryClassFqn =
+                "net.java.openjdk.test.DummyInitialContextFactory";
+
+        Path tmp = Files.createDirectory(Paths.get("InitialContextTest-2"));
+
+        Path src = templatesHome().resolve("test.template");
+        Path dst = tmp.resolve("Test.java");
+        Files.copy(src, dst);
+
+        Path dst1 = createFactoryFrom(templatesHome().resolve("factory.template"),
+                factoryClassFqn, tmp);
+
+        javac(tmp, dst);
+        Path explodedJar = Files.createDirectory(tmp.resolve("exploded-jar"));
+        javac(explodedJar, dst1);
+        jar(tmp.resolve("test.jar"), explodedJar);
+
+        Path build = Files.createDirectory(tmp.resolve("build"));
+        Files.copy(tmp.resolve("Test.class"), build.resolve("Test.class"));
+        Files.copy(tmp.resolve("test.jar"), build.resolve("test.jar"));
+
+        Map<String, String> props
+                = singletonMap(Context.INITIAL_CONTEXT_FACTORY, factoryClassFqn);
+
+        Result r = java(props, asList(build.resolve("test.jar"), build), "Test");
+
+        if (r.exitValue != 0 || !r.output.isEmpty())
+            throw new RuntimeException(r.output);
+    }
+
+
+    private static Path createFactoryFrom(Path srcTemplate,
+                                          String factoryFqn,
+                                          Path dstFolder) throws IOException {
+
+        String factorySimpleName, packageName;
+        int i = factoryFqn.lastIndexOf('.');
+        if (i < 0) {
+            packageName = "";
+            factorySimpleName = factoryFqn;
+        } else {
+            packageName = factoryFqn.substring(0, i);
+            factorySimpleName = factoryFqn.substring(i + 1);
+        }
+
+        Path result = dstFolder.resolve(factorySimpleName + ".java");
+        File dst = result.toFile();
+        File src = srcTemplate.toFile();
+        try (BufferedReader r = new BufferedReader(new FileReader(src));
+             BufferedWriter w = new BufferedWriter(new FileWriter(dst))) {
+
+            List<String> lines = processTemplate(packageName, factorySimpleName,
+                    r.lines()).collect(Collectors.toList());
+
+            Iterator<String> it = lines.iterator();
+            if (it.hasNext())
+                w.write(it.next());
+            while (it.hasNext()) {
+                w.newLine();
+                w.write(it.next());
+            }
+        }
+        return result;
+    }
+
+    private static Stream<String> processTemplate(String packageName,
+                                                  String factorySimpleName,
+                                                  Stream<String> lines) {
+        Function<String, String> pckg;
+
+        if (packageName.isEmpty()) {
+            pckg = s -> s.contains("$package") ? "" : s;
+        } else {
+            pckg = s -> s.replaceAll("\\$package", packageName);
+        }
+
+        Function<String, String> factory
+                = s -> s.replaceAll("\\$factoryName", factorySimpleName);
+
+        return lines.map(pckg).map(factory);
+    }
+
+    private static void initialContextFactoryAsService() throws Throwable {
+
+        String factoryClassFqn =
+                "net.java.openjdk.test.BrokenInitialContextFactory";
+
+        Path tmp = Files.createDirectory(Paths.get("InitialContextTest-3"));
+
+        Path src = templatesHome().resolve("test.template");
+        Path dst = tmp.resolve("Test.java");
+        Files.copy(src, dst);
+
+        Path dst1 = createFactoryFrom(templatesHome().resolve("broken_factory.template"),
+                factoryClassFqn, tmp);
+
+        javac(tmp, dst);
+
+        Path explodedJar = Files.createDirectory(tmp.resolve("exploded-jar"));
+        Path services = Files.createDirectories(explodedJar.resolve("META-INF")
+                .resolve("services"));
+
+        Path s = services.resolve("javax.naming.spi.InitialContextFactory");
+        FileWriter fw = new FileWriter(s.toFile());
+        try {
+            fw.write(factoryClassFqn);
+        } finally {
+            fw.close();
+        }
+
+        javac(explodedJar, dst1);
+        jar(tmp.resolve("test.jar"), explodedJar);
+
+        Path build = Files.createDirectory(tmp.resolve("build"));
+        Files.copy(tmp.resolve("Test.class"), build.resolve("Test.class"));
+        Files.copy(tmp.resolve("test.jar"), build.resolve("test.jar"));
+
+        Map<String, String> props = new HashMap<>();
+        props.put("java.ext.dirs", build.toString());
+        props.put(Context.INITIAL_CONTEXT_FACTORY, factoryClassFqn);
+
+        Result r = java(props, singleton(build), "Test");
+
+        if (r.exitValue == 0 || !verifyOutput(r.output, factoryClassFqn))
+            throw new RuntimeException(r.output);
+    }
+
+    // IMO, that's the easiest way that gives you a fair amount of confidence in
+    // that j.u.ServiceLoader is loading a factory rather than Class.forName
+    private static boolean verifyOutput(String output, String fqn) {
+        String s1 = String.format(
+                "Exception in thread \"main\" javax.naming.NoInitialContextException: "
+                        + "Cannot load initial context factory '%s' "
+                        + "[Root exception is java.util.ServiceConfigurationError: "
+                        + "javax.naming.spi.InitialContextFactory: "
+                        + "Provider %s could not be instantiated]", fqn, fqn);
+
+        String s2 = String.format("Caused by: java.util.ServiceConfigurationError: "
+                + "javax.naming.spi.InitialContextFactory: "
+                + "Provider %s could not be instantiated", fqn);
+
+        String s3 = "Caused by: java.lang.RuntimeException: "
+                + "This is a broken factory. It is supposed to throw this exception.";
+
+        return output.startsWith(s1) && output.contains(s2)
+                && output.contains(s1);
+    }
+
+    private static void jar(Path jarName, Path jarRoot) {
+        String jar = getJDKTool("jar");
+        ProcessBuilder p = new ProcessBuilder(jar, "cf", jarName.toString(),
+                "-C", jarRoot.toString(), ".");
+        quickFail(run(p));
+    }
+
+    private static void javac(Path compilationOutput, Path... sourceFiles) {
+        String javac = getJDKTool("javac");
+        List<String> commands = new ArrayList<>();
+        commands.addAll(asList(javac, "-d", compilationOutput.toString()));
+        List<Path> paths = asList(sourceFiles);
+        commands.addAll(paths.stream()
+                .map(Path::toString)
+                .collect(Collectors.toList()));
+        quickFail(run(new ProcessBuilder(commands)));
+    }
+
+    private static void quickFail(Result r) {
+        if (r.exitValue != 0)
+            throw new RuntimeException(r.output);
+    }
+
+    private static Result java(Map<String, String> properties,
+                               Collection<Path> classpath,
+                               String classname) {
+
+        String java = getJDKTool("java");
+
+        List<String> commands = new ArrayList<>();
+        commands.add(java);
+        commands.addAll(properties.entrySet()
+                .stream()
+                .map(e -> "-D" + e.getKey() + "=" + e.getValue())
+                .collect(Collectors.toList()));
+
+        String cp = classpath.stream()
+                .map(Path::toString)
+                .collect(Collectors.joining(File.pathSeparator));
+        commands.add("-cp");
+        commands.add(cp);
+        commands.add(classname);
+
+        return run(new ProcessBuilder(commands));
+    }
+
+    private static Result run(ProcessBuilder b) {
+        Process p = null;
+        try {
+            p = b.start();
+        } catch (IOException e) {
+            throw new RuntimeException(
+                    format("Couldn't start process '%s'", b.command()), e);
+        }
+
+        String output;
+        try {
+            output = toString(p.getInputStream(), p.getErrorStream());
+        } catch (IOException e) {
+            throw new RuntimeException(
+                    format("Couldn't read process output '%s'", b.command()), e);
+        }
+
+        try {
+            p.waitFor();
+        } catch (InterruptedException e) {
+            throw new RuntimeException(
+                    format("Process hasn't finished '%s'", b.command()), e);
+        }
+
+        return new Result(p.exitValue(), output);
+    }
+
+    private static String getJDKTool(String name) {
+        String testJdk = System.getProperty("test.jdk");
+        if (testJdk == null)
+            throw new RuntimeException("Please provide test.jdk property at a startup");
+        return testJdk + File.separator + "bin" + File.separator + name;
+    }
+
+    private static Path templatesHome() {
+        String testSrc = System.getProperty("test.src");
+        if (testSrc == null)
+            throw new RuntimeException("Please provide test.src property at a startup");
+        return Paths.get(testSrc);
+    }
+
+    private static String toString(InputStream... src) throws IOException {
+        StringWriter dst = new StringWriter();
+        Reader concatenated =
+                new InputStreamReader(
+                        new SequenceInputStream(
+                                Collections.enumeration(asList(src))));
+        copy(concatenated, dst);
+        return dst.toString();
+    }
+
+    private static void copy(Reader src, Writer dst) throws IOException {
+        int len;
+        char[] buf = new char[1024];
+        try {
+            while ((len = src.read(buf)) != -1)
+                dst.write(buf, 0, len);
+        } finally {
+            try {
+                src.close();
+            } catch (IOException ignored1) {
+            } finally {
+                try {
+                    dst.close();
+                } catch (IOException ignored2) {
+                }
+            }
+        }
+    }
+
+    private static class Result {
+
+        final int exitValue;
+        final String output;
+
+        private Result(int exitValue, String output) {
+            this.exitValue = exitValue;
+            this.output = output;
+        }
+    }
+}
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/javax/naming/spi/providers/broken_factory.template	Thu Oct 16 12:34:07 2014 +0100
@@ -0,0 +1,178 @@
+/*
+ * Copyright (c) 2014, 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.
+ */
+
+package $package;
+
+import javax.naming.*;
+import javax.naming.spi.InitialContextFactory;
+import java.util.Hashtable;
+
+public class $factoryName implements InitialContextFactory {
+
+    public $factoryName() {
+        throw new RuntimeException(
+                "This is a broken factory. It is supposed to throw this exception.");
+    }
+
+    @Override
+    public Context getInitialContext(Hashtable<?, ?> env) throws NamingException {
+        return new DummyInitialContext();
+    }
+
+    private class DummyInitialContext implements Context {
+
+        @Override
+        public Object lookup(Name name) {
+            return null;
+        }
+
+        @Override
+        public Object lookup(String name) {
+            return null;
+        }
+
+        @Override
+        public void bind(Name name, Object obj) {
+        }
+
+        @Override
+        public void bind(String name, Object obj) {
+        }
+
+        @Override
+        public void rebind(Name name, Object obj) {
+        }
+
+        @Override
+        public void rebind(String name, Object obj) {
+        }
+
+        @Override
+        public void unbind(Name name) {
+        }
+
+        @Override
+        public void unbind(String name) {
+        }
+
+        @Override
+        public void rename(Name oldName, Name newName) {
+        }
+
+        @Override
+        public void rename(String oldName, String newName) {
+        }
+
+        @Override
+        public NamingEnumeration<NameClassPair> list(Name name) {
+            return null;
+        }
+
+        @Override
+        public NamingEnumeration<NameClassPair> list(String name) {
+            return null;
+        }
+
+        @Override
+        public NamingEnumeration<Binding> listBindings(Name name) {
+            return null;
+        }
+
+        @Override
+        public NamingEnumeration<Binding> listBindings(String name) {
+            return null;
+        }
+
+        @Override
+        public void destroySubcontext(Name name) {
+        }
+
+        @Override
+        public void destroySubcontext(String name) {
+        }
+
+        @Override
+        public Context createSubcontext(Name name) {
+            return null;
+        }
+
+        @Override
+        public Context createSubcontext(String name) {
+            return null;
+        }
+
+        @Override
+        public Object lookupLink(Name name) {
+            return null;
+        }
+
+        @Override
+        public Object lookupLink(String name) {
+            return null;
+        }
+
+        @Override
+        public NameParser getNameParser(Name name) {
+            return null;
+        }
+
+        @Override
+        public NameParser getNameParser(String name) {
+            return null;
+        }
+
+        @Override
+        public Name composeName(Name name, Name prefix) {
+            return null;
+        }
+
+        @Override
+        public String composeName(String name, String prefix) {
+            return null;
+        }
+
+        @Override
+        public Object addToEnvironment(String propName, Object propVal) {
+            return null;
+        }
+
+        @Override
+        public Object removeFromEnvironment(String propName) {
+            return null;
+        }
+
+        @Override
+        public Hashtable<?, ?> getEnvironment() {
+            return null;
+        }
+
+        @Override
+        public void close() {
+        }
+
+        @Override
+        public String getNameInNamespace() {
+            return null;
+        }
+    }
+}
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/javax/naming/spi/providers/factory.template	Thu Oct 16 12:34:07 2014 +0100
@@ -0,0 +1,173 @@
+/*
+ * Copyright (c) 2014, 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.
+ */
+
+package $package;
+
+import javax.naming.*;
+import javax.naming.spi.InitialContextFactory;
+import java.util.Hashtable;
+
+public class $factoryName implements InitialContextFactory {
+
+    @Override
+    public Context getInitialContext(Hashtable<?, ?> env) throws NamingException {
+        return new DummyInitialContext();
+    }
+
+    private class DummyInitialContext implements Context {
+
+        @Override
+        public Object lookup(Name name) {
+            return null;
+        }
+
+        @Override
+        public Object lookup(String name) {
+            return null;
+        }
+
+        @Override
+        public void bind(Name name, Object obj) {
+        }
+
+        @Override
+        public void bind(String name, Object obj) {
+        }
+
+        @Override
+        public void rebind(Name name, Object obj) {
+        }
+
+        @Override
+        public void rebind(String name, Object obj) {
+        }
+
+        @Override
+        public void unbind(Name name) {
+        }
+
+        @Override
+        public void unbind(String name) {
+        }
+
+        @Override
+        public void rename(Name oldName, Name newName) {
+        }
+
+        @Override
+        public void rename(String oldName, String newName) {
+        }
+
+        @Override
+        public NamingEnumeration<NameClassPair> list(Name name) {
+            return null;
+        }
+
+        @Override
+        public NamingEnumeration<NameClassPair> list(String name) {
+            return null;
+        }
+
+        @Override
+        public NamingEnumeration<Binding> listBindings(Name name) {
+            return null;
+        }
+
+        @Override
+        public NamingEnumeration<Binding> listBindings(String name) {
+            return null;
+        }
+
+        @Override
+        public void destroySubcontext(Name name) {
+        }
+
+        @Override
+        public void destroySubcontext(String name) {
+        }
+
+        @Override
+        public Context createSubcontext(Name name) {
+            return null;
+        }
+
+        @Override
+        public Context createSubcontext(String name) {
+            return null;
+        }
+
+        @Override
+        public Object lookupLink(Name name) {
+            return null;
+        }
+
+        @Override
+        public Object lookupLink(String name) {
+            return null;
+        }
+
+        @Override
+        public NameParser getNameParser(Name name) {
+            return null;
+        }
+
+        @Override
+        public NameParser getNameParser(String name) {
+            return null;
+        }
+
+        @Override
+        public Name composeName(Name name, Name prefix) {
+            return null;
+        }
+
+        @Override
+        public String composeName(String name, String prefix) {
+            return null;
+        }
+
+        @Override
+        public Object addToEnvironment(String propName, Object propVal) {
+            return null;
+        }
+
+        @Override
+        public Object removeFromEnvironment(String propName) {
+            return null;
+        }
+
+        @Override
+        public Hashtable<?, ?> getEnvironment() {
+            return null;
+        }
+
+        @Override
+        public void close() {
+        }
+
+        @Override
+        public String getNameInNamespace() {
+            return null;
+        }
+    }
+}
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/javax/naming/spi/providers/test.template	Thu Oct 16 12:34:07 2014 +0100
@@ -0,0 +1,40 @@
+/*
+ * Copyright (c) 2014, 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 javax.naming.Context;
+import javax.naming.InitialContext;
+import javax.naming.NamingException;
+import java.util.Properties;
+
+public class Test {
+
+    public static void main(String[] args) throws NamingException {
+        Properties env = System.getProperties();
+        Context ctx = new InitialContext(env);
+        try {
+            ctx.lookup("");
+        } finally {
+            ctx.close();
+        }
+    }
+}