| /* |
| * Copyright (c) 2009, 2012, 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. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * 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 com.sun.jmx.remote.internal; |
| |
| import java.util.Properties; |
| import java.io.IOException; |
| import java.rmi.Remote; |
| import java.rmi.NoSuchObjectException; |
| |
| import java.security.AccessController; |
| import java.security.PrivilegedAction; |
| |
| /** |
| * A helper class for RMI-IIOP and CORBA APIs. |
| */ |
| |
| public final class IIOPHelper { |
| private IIOPHelper() { } |
| |
| // loads IIOPProxy implementation class if available |
| private static final String IMPL_CLASS = |
| "com.sun.jmx.remote.protocol.iiop.IIOPProxyImpl"; |
| private static final IIOPProxy proxy = |
| AccessController.doPrivileged(new PrivilegedAction<IIOPProxy>() { |
| public IIOPProxy run() { |
| try { |
| Class<?> c = Class.forName(IMPL_CLASS, true, |
| IIOPHelper.class.getClassLoader()); |
| return (IIOPProxy)c.newInstance(); |
| } catch (ClassNotFoundException cnf) { |
| return null; |
| } catch (InstantiationException e) { |
| throw new AssertionError(e); |
| } catch (IllegalAccessException e) { |
| throw new AssertionError(e); |
| } |
| }}); |
| |
| /** |
| * Returns true if RMI-IIOP and CORBA is available. |
| */ |
| public static boolean isAvailable() { |
| return proxy != null; |
| } |
| |
| private static void ensureAvailable() { |
| if (proxy == null) |
| throw new AssertionError("Should not here"); |
| } |
| |
| /** |
| * Returns true if the given object is a Stub. |
| */ |
| public static boolean isStub(Object obj) { |
| return (proxy == null) ? false : proxy.isStub(obj); |
| } |
| |
| /** |
| * Returns the Delegate to which the given Stub delegates. |
| */ |
| public static Object getDelegate(Object stub) { |
| ensureAvailable(); |
| return proxy.getDelegate(stub); |
| } |
| |
| /** |
| * Sets the Delegate for a given Stub. |
| */ |
| public static void setDelegate(Object stub, Object delegate) { |
| ensureAvailable(); |
| proxy.setDelegate(stub, delegate); |
| } |
| |
| /** |
| * Returns the ORB associated with the given stub |
| * |
| * @throws UnsupportedOperationException |
| * if the object does not support the operation that |
| * was invoked |
| */ |
| public static Object getOrb(Object stub) { |
| ensureAvailable(); |
| return proxy.getOrb(stub); |
| } |
| |
| /** |
| * Connects the Stub to the given ORB. |
| */ |
| public static void connect(Object stub, Object orb) |
| throws IOException |
| { |
| if (proxy == null) |
| throw new IOException("Connection to ORB failed, RMI/IIOP not available"); |
| proxy.connect(stub, orb); |
| } |
| |
| /** |
| * Returns true if the given object is an ORB. |
| */ |
| public static boolean isOrb(Object obj) { |
| return (proxy == null) ? false : proxy.isOrb(obj); |
| } |
| |
| /** |
| * Creates, and returns, a new ORB instance. |
| */ |
| public static Object createOrb(String[] args, Properties props) |
| throws IOException |
| { |
| if (proxy == null) |
| throw new IOException("ORB initialization failed, RMI/IIOP not available"); |
| return proxy.createOrb(args, props); |
| } |
| |
| /** |
| * Converts a string, produced by the object_to_string method, back |
| * to a CORBA object reference. |
| */ |
| public static Object stringToObject(Object orb, String str) { |
| ensureAvailable(); |
| return proxy.stringToObject(orb, str); |
| } |
| |
| /** |
| * Converts the given CORBA object reference to a string. |
| */ |
| public static String objectToString(Object orb, Object obj) { |
| ensureAvailable(); |
| return proxy.objectToString(orb, obj); |
| } |
| |
| /** |
| * Checks to ensure that an object of a remote or abstract interface |
| * type can be cast to a desired type. |
| */ |
| public static <T> T narrow(Object narrowFrom, Class<T> narrowTo) { |
| ensureAvailable(); |
| return proxy.narrow(narrowFrom, narrowTo); |
| } |
| |
| /** |
| * Makes a server object ready to receive remote calls |
| */ |
| public static void exportObject(Remote obj) throws IOException { |
| if (proxy == null) |
| throw new IOException("RMI object cannot be exported, RMI/IIOP not available"); |
| proxy.exportObject(obj); |
| } |
| |
| /** |
| * Deregisters a server object from the runtime. |
| */ |
| public static void unexportObject(Remote obj) throws IOException { |
| if (proxy == null) |
| throw new NoSuchObjectException("Object not exported"); |
| proxy.unexportObject(obj); |
| } |
| |
| /** |
| * Returns a stub for the given server object. |
| */ |
| public static Remote toStub(Remote obj) throws IOException { |
| if (proxy == null) |
| throw new NoSuchObjectException("Object not exported"); |
| return proxy.toStub(obj); |
| } |
| } |