Example usage for java.lang Class getClassLoader

List of usage examples for java.lang Class getClassLoader

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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.brooklyn.util.core.ClassLoaderUtilsTest.java

private void assertLoadSucceeds(ClassLoaderUtils clu, String bundledClassName, Class<?> expectedClass)
        throws ClassNotFoundException {
    BundledName className = new BundledName(bundledClassName);

    Class<?> cls = clu.loadClass(bundledClassName);
    assertEquals(cls.getName(), className.name);
    if (expectedClass != null) {
        assertEquals(cls, expectedClass);
    }/*from  w w  w  .j a v  a2 s . co  m*/

    ClassLoader cl = cls.getClassLoader();
    BundledName resource = className.toResource();
    String bundledResource = resource.toString();
    URL resourceUrl = cl.getResource(resource.name);
    assertEquals(clu.getResource(bundledResource), resourceUrl);
    assertEquals(clu.getResources(bundledResource), ImmutableList.of(resourceUrl), "Loading with " + clu);

    BundledName rootResource = new BundledName(resource.bundle, resource.version, "/" + resource.name);
    String rootBundledResource = rootResource.toString();
    assertEquals(clu.getResource(rootBundledResource), resourceUrl);
    assertEquals(clu.getResources(rootBundledResource), ImmutableList.of(resourceUrl));
}

From source file:org.apache.nifi.registry.flow.mapping.NiFiRegistryFlowMapper.java

private List<ControllerServiceAPI> mapControllerServiceApis(final ControllerServiceNode service) {
    final Class<?> serviceClass = service.getControllerServiceImplementation().getClass();

    final Set<Class<?>> serviceApiClasses = new HashSet<>();
    // get all of it's interfaces to determine the controller service api's it implements
    final List<Class<?>> interfaces = ClassUtils.getAllInterfaces(serviceClass);
    for (final Class<?> i : interfaces) {
        // add all controller services that's not ControllerService itself
        if (ControllerService.class.isAssignableFrom(i) && !ControllerService.class.equals(i)) {
            serviceApiClasses.add(i);/*ww w.ja va2  s . c o  m*/
        }
    }

    final List<ControllerServiceAPI> serviceApis = new ArrayList<>();
    for (final Class<?> serviceApiClass : serviceApiClasses) {
        final BundleCoordinate bundleCoordinate = extensionManager.getBundle(serviceApiClass.getClassLoader())
                .getBundleDetails().getCoordinate();

        final ControllerServiceAPI serviceApi = new ControllerServiceAPI();
        serviceApi.setType(serviceApiClass.getName());
        serviceApi.setBundle(mapBundle(bundleCoordinate));
        serviceApis.add(serviceApi);
    }
    return serviceApis;
}

From source file:org.apache.sling.validation.impl.ValidationServiceImpl.java

private void validatePropertyValue(String property, ValueMap valueMap, Resource resource, String relativePath,
        ResourceProperty resourceProperty, CompositeValidationResult result) {
    Object fieldValues = valueMap.get(property);
    if (fieldValues == null) {
        if (resourceProperty.isRequired()) {
            result.addFailure(relativePath, null, I18N_KEY_MISSING_REQUIRED_PROPERTY_WITH_NAME, property);
        }//  w w w .  j av a  2s.c  o m
        return;
    }
    List<ParameterizedValidator> validators = resourceProperty.getValidators();
    if (resourceProperty.isMultiple()) {
        if (!fieldValues.getClass().isArray()) {
            result.addFailure(relativePath + property, null, I18N_KEY_EXPECTED_MULTIVALUE_PROPERTY);
            return;
        }
    }

    for (ParameterizedValidator validator : validators) {
        // convert the type always to an array
        Class<?> type = validator.getType();
        if (!type.isArray()) {
            try {
                // https://docs.oracle.com/javase/6/docs/api/java/lang/Class.html#getName%28%29 has some hints on class names
                type = Class.forName("[L" + type.getName() + ";", false, type.getClassLoader());
            } catch (ClassNotFoundException e) {
                throw new SlingValidationException("Could not generate array class for type " + type, e);
            }
        }
        // it is already validated here that the property exists in the value map
        Object[] typedValue = (Object[]) valueMap.get(property, type);
        // see https://issues.apache.org/jira/browse/SLING-4178 for why the second check is necessary
        if (typedValue == null || (typedValue.length > 0 && typedValue[0] == null)) {
            // here the missing required property case was already treated in validateValueMap
            result.addFailure(relativePath + property, validator.getSeverity(), I18N_KEY_WRONG_PROPERTY_TYPE,
                    validator.getType());
            return;
        }

        // see https://issues.apache.org/jira/browse/SLING-662 for a description on how multivalue properties are treated with ValueMap
        if (validator.getType().isArray()) {
            // ValueMap already returns an array in both cases (property is single value or multivalue)
            validateValue(result, typedValue, property, relativePath, valueMap, resource, validator);
        } else {
            // call validate for each entry in the array (supports both singlevalue and multivalue)
            @Nonnull
            Object[] array = (Object[]) typedValue;
            if (array.length == 1) {
                validateValue(result, array[0], property, relativePath, valueMap, resource, validator);
            } else {
                int n = 0;
                for (Object item : array) {
                    validateValue(result, item, property + "[" + n++ + "]", relativePath, valueMap, resource,
                            validator);
                }
            }
        }
    }
}

From source file:com.liferay.maven.plugins.ServiceBuilderMojo.java

protected void initPortalClassLoader() throws Exception {
    super.initPortalClassLoader();

    Class<?> clazz = getClass();

    URLClassLoader urlClassLoader = (URLClassLoader) clazz.getClassLoader();

    Method method = URLClassLoader.class.getDeclaredMethod("addURL", URL.class);

    method.setAccessible(true);/*from  ww w  .j av a 2s  .  c om*/

    File file = new File(implResourcesDir);

    URI uri = file.toURI();

    method.invoke(urlClassLoader, uri.toURL());
}

From source file:com.autobizlogic.abl.util.BeanUtil.java

private static Field getFieldFromClass(Class<?> cls, String fieldName, Class<?> argClass,
        boolean onlyProtectedAndHigher) {
    Field[] allFields = cls.getDeclaredFields();
    for (Field field : allFields) {
        if (!field.getName().equals(fieldName))
            continue;
        int modifiers = field.getModifiers();
        if (onlyProtectedAndHigher && Modifier.isPrivate(modifiers))
            continue;
        if (argClass != null) {
            Class<?> genericType = getGenericType(field.getType());
            if (!genericType.isAssignableFrom(argClass)) {
                String extraInfo = "";
                // If the two classes have the same name, it's probably a classloader problem,
                // so we generate more informative output to help debug
                if (field.getType().getName().equals(argClass.getName())) {
                    extraInfo = ". It looks like the two classes have the same name, so this is "
                            + "probably a classloader issue. The bean field's class comes from "
                            + field.getType().getClassLoader() + ", the other class comes from "
                            + argClass.getClassLoader();
                }/*  w w w .j  a v  a2 s  . c o  m*/
                throw new RuntimeException("Bean field " + fieldName + " of class " + cls.getName()
                        + " is of the wrong type (" + field.getType().getName() + ") for the given argument, "
                        + "which is of type " + argClass.getName() + extraInfo);
            }
        }

        return field;
    }

    return null;
}

From source file:me.piebridge.android.preference.PreferenceFragment.java

@Override
public void onStart() {
    super.onStart();
    // FIXME: mPreferenceManager.setOnPreferenceTreeClickListener(this);
    try {/*from   w  ww.  java  2s  . c  o m*/
        Class<?> clazz = Class.forName("android.preference.PreferenceManager$OnPreferenceTreeClickListener");
        Object proxy = Proxy.newProxyInstance(clazz.getClassLoader(), new Class[] { clazz },
                new InvocationHandler() {
                    @Override
                    public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
                        if (method.getName().equals("onPreferenceTreeClick")) {
                            return onPreferenceTreeClick((PreferenceScreen) args[0], (Preference) args[1]);
                        }
                        return null;
                    }
                });
        callVoidMethod(mPreferenceManager, "setOnPreferenceTreeClickListener", new Class[] { clazz },
                new Object[] { proxy });
    } catch (ClassNotFoundException e) {
        e.printStackTrace();
    }
}

From source file:hudson.security.SecurityRealm.java

/**
 * Returns true if this {@link SecurityRealm} allows online sign-up.
 * This creates a hyperlink that redirects users to {@code CONTEXT_ROOT/signUp},
 * which will be served by the {@code signup.jelly} view of this class.
 *
 * <p>// ww  w .java 2  s  .  c  om
 * If the implementation needs to redirect the user to a different URL
 * for signing up, use the following jelly script as {@code signup.jelly}
 *
 * <pre>{@code <xmp>
 * <st:redirect url="http://www.sun.com/" xmlns:st="jelly:stapler"/>
 * </xmp>}</pre>
 */
public boolean allowsSignup() {
    Class clz = getClass();
    return clz.getClassLoader().getResource(clz.getName().replace('.', '/') + "/signup.jelly") != null;
}

From source file:org.apache.apex.malhar.lib.function.FunctionOperator.java

private byte[] functionClassData(Function f) {
    Class<? extends Function> classT = f.getClass();

    byte[] classBytes = null;
    byte[] classNameBytes = null;
    String className = classT.getName();
    try {//from  w  w w .ja v a2  s . c o  m
        classNameBytes = className.replace('.', '/').getBytes();
        classBytes = IOUtils.toByteArray(
                classT.getClassLoader().getResourceAsStream(className.replace('.', '/') + ".class"));
        int cursor = 0;
        for (int j = 0; j < classBytes.length; j++) {
            if (classBytes[j] != classNameBytes[cursor]) {
                cursor = 0;
            } else {
                cursor++;
            }

            if (cursor == classNameBytes.length) {
                for (int p = 0; p < classNameBytes.length; p++) {
                    if (classBytes[j - p] == '$') {
                        classBytes[j - p] = '_';
                    }
                }
                cursor = 0;
            }
        }
        ClassReader cr = new ClassReader(new ByteArrayInputStream(classBytes));
        ClassWriter cw = new ClassWriter(0);
        AnnonymousClassModifier annonymousClassModifier = new AnnonymousClassModifier(Opcodes.ASM4, cw);
        cr.accept(annonymousClassModifier, 0);
        classBytes = cw.toByteArray();
    } catch (IOException e) {
        throw new RuntimeException(e);
    }
    int dataLength = classNameBytes.length + 4 + 4;

    ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream(dataLength);
    DataOutputStream output = new DataOutputStream(byteArrayOutputStream);

    try {
        output.writeInt(classNameBytes.length);
        output.write(className.replace('$', '_').getBytes());
        output.writeInt(classBytes.length);
        output.write(classBytes);
    } catch (IOException e) {
        throw new RuntimeException(e);
    } finally {
        try {
            output.flush();
            output.close();
        } catch (IOException e) {
            throw new RuntimeException(e);
        }
    }

    return byteArrayOutputStream.toByteArray();

}

From source file:com.github.hrpc.rpc.ProtobufRpcEngine.java

@Override
public ProtocolProxy<ProtocolMetaInfoPB> getProtocolMetaInfoProxy(ConnectionId connId, Option conf,
        SocketFactory factory) throws IOException {
    Class<ProtocolMetaInfoPB> protocol = ProtocolMetaInfoPB.class;
    return new ProtocolProxy<ProtocolMetaInfoPB>(protocol,
            (ProtocolMetaInfoPB) Proxy.newProxyInstance(protocol.getClassLoader(), new Class[] { protocol },
                    new Invoker(protocol, connId, conf, factory)));
}

From source file:org.apache.hadoop.hbase.ipc.bak.SchedulableWritableRpcEngine.java

/** Construct a client-side proxy object that implements the named protocol,
 * talking to a server at the named address. */
@Override/*from  ww  w .j  a  v  a  2 s.  c o m*/
public <T extends VersionedProtocol> T getProxy(Class<T> protocol, long clientVersion, InetSocketAddress addr,
        Configuration conf, int rpcTimeout) throws IOException {
    if (this.client == null) {
        throw new IOException("Client must be initialized by calling setConf(Configuration)");
    }

    T proxy = (T) Proxy.newProxyInstance(protocol.getClassLoader(), new Class[] { protocol }, new Invoker(
            client, protocol, addr, userProvider.getCurrent(), conf, HBaseRPC.getRpcTimeout(rpcTimeout)));

    /*
     * TODO: checking protocol version only needs to be done once when we setup a new
     * HBaseClient.Connection.  Doing it every time we retrieve a proxy instance is resulting
     * in unnecessary RPC traffic.
     */
    long serverVersion = ((VersionedProtocol) proxy).getProtocolVersion(protocol.getName(), clientVersion);
    if (serverVersion != clientVersion) {
        throw new HBaseRPC.VersionMismatch(protocol.getName(), clientVersion, serverVersion);
    }

    return proxy;
}