Example usage for java.lang Class getClassLoader

Introduction

In this page you can find the example usage for java.lang Class getClassLoader.

Prototype

@CallerSensitive
@ForceInline 
public ClassLoader getClassLoader()

Source Link

Document

Returns the class loader for the class.

Usage

From source file:org.apache.hadoop.hbase.ipc.ProtobufRpcClientEngine.java

@Override
public IpcProtocol getProxy(Class<? extends IpcProtocol> protocol, InetSocketAddress addr, User ticket,
        Configuration conf, SocketFactory factory, int rpcTimeout) throws IOException {
    final Invoker invoker = new Invoker(protocol, addr, ticket, conf, factory, rpcTimeout);
    return (IpcProtocol) Proxy.newProxyInstance(protocol.getClassLoader(), new Class[] { protocol }, invoker);
}

From source file:com.netflix.paas.config.base.JavaAssistArchaeusConfigurationFactory.java

@SuppressWarnings({ "unchecked", "static-access" })
public <T> T get(Class<T> configClass, DynamicPropertyFactory propertyFactory,
        AbstractConfiguration configuration) throws Exception {
    final Map<String, Supplier<?>> methods = ConfigurationProxyUtils.getMethodSuppliers(configClass,
            propertyFactory, configuration);

    if (configClass.isInterface()) {
        Class<?> proxyClass = Proxy.getProxyClass(configClass.getClassLoader(), new Class[] { configClass });

        return (T) proxyClass.getConstructor(new Class[] { InvocationHandler.class })
                .newInstance(new Object[] { new InvocationHandler() {
                    @Override//w ww .j av a 2s . c  o m
                    public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
                        Supplier<?> supplier = (Supplier<?>) methods.get(method.getName());
                        if (supplier == null) {
                            return method.invoke(proxy, args);
                        }
                        return supplier.get();
                    }
                } });
    } else {
        final Enhancer enhancer = new Enhancer();
        final Object obj = (T) enhancer.create(configClass, new net.sf.cglib.proxy.InvocationHandler() {
            @Override
            public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
                Supplier<?> supplier = (Supplier<?>) methods.get(method.getName());
                if (supplier == null) {
                    return method.invoke(proxy, args);
                }
                return supplier.get();
            }
        });

        ConfigurationProxyUtils.assignFieldValues(obj, configClass, propertyFactory, configuration);
        return (T) obj;
    }
}

From source file:net.darkmist.alib.res.PkgRes.java

public PkgRes(Class<?> cls) {
    if (cls == null)
        throw new NullPointerException("cls is null");
    this.loader = cls.getClassLoader();
    prefix = appendResourcePathPrefixFor(null, cls).toString();
}

From source file:ca.uhn.fhir.rest.client.RestfulClientFactory.java

@SuppressWarnings("unchecked")
private <T extends IRestfulClient> T instantiateProxy(Class<T> theClientType,
        InvocationHandler theInvocationHandler) {
    T proxy = (T) Proxy.newProxyInstance(theClientType.getClassLoader(), new Class[] { theClientType },
            theInvocationHandler);//from  w ww . ja va2 s  .  c o  m
    return proxy;
}

From source file:org.freezedry.serialization.ObjectSerializer.java

@Override
public synchronized <T> T deserialize(final InputStream input, final Class<T> clazz) {
    // read the input stream into an object. we use the the (apache commons-io) ClassLoaderObjectInputStream
    // to read the object because we need to be able to use the same class loader that loaded the class in
    // the first place (for example, the RestfulClassLoader).
    T object;// w ww .  j a v a 2s  .  co m
    try (final ClassLoaderObjectInputStream in = new ClassLoaderObjectInputStream(clazz.getClassLoader(),
            input)) {
        object = clazz.cast(in.readObject());
    } catch (IOException | ClassNotFoundException e) {
        final StringBuilder message = new StringBuilder();
        message.append("Unable to serialize object to output stream:").append(Constants.NEW_LINE);
        message.append("  Input Stream Type: ").append(input.getClass().getName()).append(Constants.NEW_LINE);
        message.append("  Object Type: ").append(clazz.getName()).append(Constants.NEW_LINE);
        LOGGER.error(message.toString(), e);
        throw new IllegalArgumentException(message.toString(), e);
    }
    return object;
}

From source file:org.apache.fop.events.DefaultEventBroadcaster.java

/**
 * Creates a dynamic proxy for the given EventProducer interface that will handle the
 * conversion of the method call into the broadcasting of an event instance.
 * @param clazz a descendant interface of EventProducer
 * @return the EventProducer instance/*from w  w  w.  j  a  v  a  2 s .c om*/
 */
protected EventProducer createProxyFor(Class clazz) {
    final EventProducerModel producerModel = getEventProducerModel(clazz);
    if (producerModel == null) {
        throw new IllegalStateException("Event model doesn't contain the definition for " + clazz.getName());
    }
    return (EventProducer) Proxy.newProxyInstance(clazz.getClassLoader(), new Class[] { clazz },
            new InvocationHandler() {
                public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
                    String methodName = method.getName();
                    EventMethodModel methodModel = producerModel.getMethod(methodName);
                    String eventID = producerModel.getInterfaceName() + "." + methodName;
                    if (methodModel == null) {
                        throw new IllegalStateException("Event model isn't consistent"
                                + " with the EventProducer interface. Please rebuild FOP!"
                                + " Affected method: " + eventID);
                    }
                    Map params = new java.util.HashMap();
                    int i = 1;
                    Iterator iter = methodModel.getParameters().iterator();
                    while (iter.hasNext()) {
                        EventMethodModel.Parameter param = (EventMethodModel.Parameter) iter.next();
                        params.put(param.getName(), args[i]);
                        i++;
                    }
                    Event ev = new Event(args[0], eventID, methodModel.getSeverity(), params);
                    broadcastEvent(ev);

                    if (ev.getSeverity() == EventSeverity.FATAL) {
                        EventExceptionManager.throwException(ev, methodModel.getExceptionClass());
                    }
                    return null;
                }
            });
}

From source file:fast.servicescreen.server.RequestServiceImpl.java

private String getClassLocation() {
    Class<? extends RequestServiceImpl> myClass = this.getClass();
    String myClassName = myClass.getName();
    String resourceName = myClassName.replace('.', '/') + ".class";
    String classpath = myClass.getClassLoader().getResource(resourceName).toString();

    // cut file: prefix
    classpath = classpath.substring("file:".length());

    return classpath;
}

From source file:appeng.recipes.loader.RecipeResourceCopier.java

/**
 * List directory contents for a resource folder. Not recursive. This is basically a brute-force implementation. Works for regular files and also JARs.
 *
 * @param clazz Any java class that lives in the same place as the resources you want.
 * @param path Should end with "/", but not start with one.
 *
 * @return Just the name of each member item, not the full paths.
 *
 * @throws URISyntaxException            if it is a file path and the URL can not be converted to URI
 * @throws IOException                   if jar path can not be decoded
 * @throws UnsupportedOperationException if it is neither in jar nor in file path
 *///from w w w  .  j av a2 s . c om
@Nonnull
private String[] getResourceListing(@Nonnull final Class<?> clazz, @Nonnull final String path)
        throws URISyntaxException, IOException {
    assert clazz != null;
    assert path != null;

    final ClassLoader classLoader = clazz.getClassLoader();
    if (classLoader == null) {
        throw new IllegalStateException(
                "ClassLoader was not found. It was probably loaded at a inappropriate time");
    }

    URL dirURL = classLoader.getResource(path);
    if (dirURL != null) {
        final String protocol = dirURL.getProtocol();
        if (protocol.equals(FILE_PROTOCOL)) {
            // A file path: easy enough

            final URI uriOfURL = dirURL.toURI();
            final File fileOfURI = new File(uriOfURL);
            final String[] filesAndDirectoriesOfURI = fileOfURI.list();

            if (filesAndDirectoriesOfURI == null) {
                throw new IllegalStateException(
                        "Files and Directories were illegal. Either an abstract pathname does not denote a directory, or an I/O error occured.");
            } else {
                return filesAndDirectoriesOfURI;
            }
        }
    }

    if (dirURL == null) {
        /*
         * In case of a jar file, we can't actually find a directory.
         * Have to assume the same jar as clazz.
         */
        final String className = clazz.getName();
        final Matcher matcher = DOT_COMPILE_PATTERN.matcher(className);
        final String me = matcher.replaceAll("/") + CLASS_EXTENSION;
        dirURL = classLoader.getResource(me);
    }

    if (dirURL != null) {
        final String protocol = dirURL.getProtocol();
        if (protocol.equals(JAR_PROTOCOL)) {
            /* A JAR path */
            final String dirPath = dirURL.getPath();
            final String jarPath = dirPath.substring(5, dirPath.indexOf('!')); // strip out only
            // the JAR file
            final JarFile jar = new JarFile(URLDecoder.decode(jarPath, UTF_8_ENCODING));
            try {
                final Enumeration<JarEntry> entries = jar.entries(); // gives ALL entries in jar
                final Collection<String> result = new HashSet<String>(INITIAL_RESOURCE_CAPACITY); // avoid duplicates

                // in case it is a
                // subdirectory
                while (entries.hasMoreElements()) {
                    final JarEntry entry = entries.nextElement();
                    final String entryFullName = entry.getName();
                    if (entryFullName.startsWith(path)) { // filter according to the path
                        String entryName = entryFullName.substring(path.length());
                        final int checkSubDir = entryName.indexOf('/');
                        if (checkSubDir >= 0) {
                            // if it is a subdirectory, we just return the directory name
                            entryName = entryName.substring(0, checkSubDir);
                        }
                        result.add(entryName);
                    }
                }

                return result.toArray(new String[result.size()]);
            } finally {
                jar.close();
            }
        }
    }

    throw new UnsupportedOperationException("Cannot list files for URL " + dirURL);
}

From source file:net.darkmist.alib.res.PkgRes.java

public PkgRes(Object obj) {
    Class<?> cls;

    if (obj == null)
        throw new NullPointerException("obj is null");
    cls = obj.getClass();/* w  w  w.j  a va2 s.  c om*/
    loader = cls.getClassLoader();
    prefix = appendResourcePathPrefixFor(null, cls).toString();
}

From source file:com.seer.datacruncher.eventtrigger.DynamicClassLoader.java

public Object newProxyInstance(Class interfaceClass, String implClassName) throws RuntimeException {
    JVInvocationHandler handler = new JVInvocationHandler(implClassName);
    return Proxy.newProxyInstance(interfaceClass.getClassLoader(), new Class[] { interfaceClass }, handler);
}