jdk8-mips64-public/corba: src/share/classes/javax/rmi/CORBA/Util.java@9c913ea7e4a1 (annotated)

src/share/classes/javax/rmi/CORBA/Util.java@9c913ea7e4a1 (annotated)

src/share/classes/javax/rmi/CORBA/Util.java

Thu, 24 May 2018 16:41:12 +0800

author: aoqi
date: Thu, 24 May 2018 16:41:12 +0800
changeset 1410: 9c913ea7e4a1
parent 1377: ec7b9aafd7e1
parent 748: 6845b95cba6b
permissions: -rw-r--r--

Merge

 /*
  * Copyright (c) 1998, 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.  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.
  */
 /*
  * Licensed Materials - Property of IBM
  * RMI-IIOP v1.0
  * Copyright IBM Corp. 1998 1999  All Rights Reserved
  *
  */
 package javax.rmi.CORBA;
 import java.rmi.RemoteException;
 import org.omg.CORBA.ORB;
 import org.omg.CORBA.INITIALIZE;
 import org.omg.CORBA.SystemException;
 import org.omg.CORBA.Any;
 import org.omg.CORBA.portable.InputStream;
 import org.omg.CORBA.portable.OutputStream;
 import org.omg.CORBA.portable.ObjectImpl;
 import javax.rmi.CORBA.Tie;
 import java.rmi.Remote;
 import java.io.File;
 import java.io.FileInputStream;
 import java.io.SerializablePermission;
 import java.net.MalformedURLException ;
 import java.security.AccessController;
 import java.security.PrivilegedAction;
 import java.util.Properties;
 import java.rmi.server.RMIClassLoader;
 import com.sun.corba.se.impl.orbutil.GetPropertyAction;
 /**
  * Provides utility methods that can be used by stubs and ties to
  * perform common operations.
  */
 public class Util {
     // This can only be set at static initialization time (no sync necessary).
     private static final javax.rmi.CORBA.UtilDelegate utilDelegate;
     private static final String UtilClassKey = "javax.rmi.CORBA.UtilClass";
     private static final String ALLOW_CREATEVALUEHANDLER_PROP = "jdk.rmi.CORBA.allowCustomValueHandler";
     private static boolean allowCustomValueHandler;
     static {
         utilDelegate = (javax.rmi.CORBA.UtilDelegate)createDelegate(UtilClassKey);
         allowCustomValueHandler = readAllowCustomValueHandlerProperty();
     }
     private static boolean readAllowCustomValueHandlerProperty () {
        return AccessController
         .doPrivileged(new PrivilegedAction<Boolean>() {
             @Override
             public Boolean run() {
                 return Boolean.getBoolean(ALLOW_CREATEVALUEHANDLER_PROP);
             }
         });
     }
     private Util(){}
     /**
      * Maps a SystemException to a RemoteException.
      * @param ex the SystemException to map.
      * @return the mapped exception.
      */
     public static RemoteException mapSystemException(SystemException ex) {
         if (utilDelegate != null) {
             return utilDelegate.mapSystemException(ex);
         }
         return null;
     }
     /**
      * Writes any java.lang.Object as a CORBA any.
      * @param out the stream in which to write the any.
      * @param obj the object to write as an any.
      */
     public static void writeAny(OutputStream out, Object obj) {
         if (utilDelegate != null) {
             utilDelegate.writeAny(out, obj);
         }
     }
     /**
      * Reads a java.lang.Object as a CORBA any.
      * @param in the stream from which to read the any.
      * @return the object read from the stream.
      */
     public static Object readAny(InputStream in) {
         if (utilDelegate != null) {
             return utilDelegate.readAny(in);
         }
         return null;
     }
     /**
      * Writes a java.lang.Object as a CORBA Object. If <code>obj</code> is
      * an exported RMI-IIOP server object, the tie is found
      * and wired to <code>obj</code>, then written to
      * <code>out.write_Object(org.omg.CORBA.Object)</code>.
      * If <code>obj</code> is a CORBA Object, it is written to
      * <code>out.write_Object(org.omg.CORBA.Object)</code>.
      * @param out the stream in which to write the object.
      * @param obj the object to write.
      */
     public static void writeRemoteObject(OutputStream out,
                                          java.lang.Object obj) {
         if (utilDelegate != null) {
             utilDelegate.writeRemoteObject(out, obj);
         }
     }
     /**
      * Writes a java.lang.Object as either a value or a CORBA Object.
      * If <code>obj</code> is a value object or a stub object, it is written to
      * <code>out.write_abstract_interface(java.lang.Object)</code>. If <code>obj</code>
 is
 an exported
      * RMI-IIOP server object, the tie is found and wired to <code>obj</code>,
      * then written to <code>out.write_abstract_interface(java.lang.Object)</code>.
      * @param out the stream in which to write the object.
      * @param obj the object to write.
      */
     public static void writeAbstractObject(OutputStream out,
                                            java.lang.Object obj) {
         if (utilDelegate != null) {
             utilDelegate.writeAbstractObject(out, obj);
         }
     }
     /**
      * Registers a target for a tie. Adds the tie to an internal table and calls
      * {@link Tie#setTarget} on the tie object.
      * @param tie the tie to register.
      * @param target the target for the tie.
      */
     public static void registerTarget(javax.rmi.CORBA.Tie tie,
                                       java.rmi.Remote target) {
         if (utilDelegate != null) {
             utilDelegate.registerTarget(tie, target);
         }
     }
     /**
      * Removes the associated tie from an internal table and calls {@link
 Tie#deactivate}
      * to deactivate the object.
      * @param target the object to unexport.
      */
     public static void unexportObject(java.rmi.Remote target)
         throws java.rmi.NoSuchObjectException
     {
         if (utilDelegate != null) {
             utilDelegate.unexportObject(target);
         }
     }
     /**
      * Returns the tie (if any) for a given target object.
      * @return the tie or null if no tie is registered for the given target.
      */
     public static Tie getTie (Remote target) {
         if (utilDelegate != null) {
             return utilDelegate.getTie(target);
         }
         return null;
     }
     /**
      * Returns a singleton instance of a class that implements the
      * {@link ValueHandler} interface.
      * @return a class which implements the ValueHandler interface.
      */
     public static ValueHandler createValueHandler() {
         isCustomSerializationPermitted();
         if (utilDelegate != null) {
             return utilDelegate.createValueHandler();
         }
         return null;
     }
     /**
      * Returns the codebase, if any, for the given class.
      * @param clz the class to get a codebase for.
      * @return a space-separated list of URLs, or null.
      */
     public static String getCodebase(java.lang.Class clz) {
         if (utilDelegate != null) {
             return utilDelegate.getCodebase(clz);
         }
         return null;
     }
     /**
      * Returns a class instance for the specified class.
      * <P>The spec for this method is the "Java to IDL language
      * mapping", ptc/00-01-06.
      * <P>In Java SE Platform, this method works as follows:
      * <UL><LI>Find the first non-null <tt>ClassLoader</tt> on the
      * call stack and attempt to load the class using this
      * <tt>ClassLoader</tt>.
      * <LI>If the first step fails, and if <tt>remoteCodebase</tt>
      * is non-null and
      * <tt>useCodebaseOnly</tt> is false, then call
      * <tt>java.rmi.server.RMIClassLoader.loadClass(remoteCodebase, className)</tt>.
      * <LI>If <tt>remoteCodebase</tt> is null or <tt>useCodebaseOnly</tt>
      * is true, then call <tt>java.rmi.server.RMIClassLoader.loadClass(className)</tt>.
      * <LI>If a class was not successfully loaded by step 1, 2, or 3,
      * and <tt>loader</tt> is non-null, then call <tt>loader.loadClass(className)</tt>.
      * <LI>If a class was successfully loaded by step 1, 2, 3, or 4, then
      *  return the loaded class, else throw <tt>ClassNotFoundException</tt>.
      * @param className the name of the class.
      * @param remoteCodebase a space-separated list of URLs at which
      * the class might be found. May be null.
      * @param loader a <tt>ClassLoader</tt> that may be used to
      * load the class if all other methods fail.
      * @return the <code>Class</code> object representing the loaded class.
      * @exception ClassNotFoundException if class cannot be loaded.
      */
     public static Class loadClass(String className,
                                   String remoteCodebase,
                                   ClassLoader loader)
         throws ClassNotFoundException {
         if (utilDelegate != null) {
             return utilDelegate.loadClass(className,remoteCodebase,loader);
         }
         return null ;
     }
     /**
      * The <tt>isLocal</tt> method has the same semantics as the
      * <tt>ObjectImpl._is_local</tt>
      * method, except that it can throw a <tt>RemoteException</tt>.
      *
      * The <tt>_is_local()</tt> method is provided so that stubs may determine if a
      * particular object is implemented by a local servant and hence local
      * invocation APIs may be used.
      *
      * @param stub the stub to test.
      *
      * @return The <tt>_is_local()</tt> method returns true if
      * the servant incarnating the object is located in the same process as
      * the stub and they both share the same ORB instance.  The <tt>_is_local()</tt>
      * method returns false otherwise. The default behavior of <tt>_is_local()</tt> is
      * to return false.
      *
      * @throws RemoteException The Java to IDL specification does not
      * specify the conditions that cause a <tt>RemoteException</tt> to be thrown.
      */
     public static boolean isLocal(Stub stub) throws RemoteException {
         if (utilDelegate != null) {
             return utilDelegate.isLocal(stub);
         }
         return false;
     }
     /**
      * Wraps an exception thrown by an implementation
      * method.  It returns the corresponding client-side exception.
      * @param orig the exception to wrap.
      * @return the wrapped exception.
      */
     public static RemoteException wrapException(Throwable orig) {
         if (utilDelegate != null) {
             return utilDelegate.wrapException(orig);
         }
         return null;
     }
     /**
      * Copies or connects an array of objects. Used by local stubs
      * to copy any number of actual parameters, preserving sharing
      * across parameters as necessary to support RMI semantics.
      * @param obj the objects to copy or connect.
      * @param orb the ORB.
      * @return the copied or connected objects.
      * @exception RemoteException if any object could not be copied or connected.
      */
     public static Object[] copyObjects (Object[] obj, ORB orb)
         throws RemoteException {
         if (utilDelegate != null) {
             return utilDelegate.copyObjects(obj, orb);
         }
         return null;
     }
     /**
      * Copies or connects an object. Used by local stubs to copy
      * an actual parameter, result object, or exception.
      * @param obj the object to copy.
      * @param orb the ORB.
      * @return the copy or connected object.
      * @exception RemoteException if the object could not be copied or connected.
      */
     public static Object copyObject (Object obj, ORB orb)
         throws RemoteException {
         if (utilDelegate != null) {
             return utilDelegate.copyObject(obj, orb);
         }
         return null;
     }
     // Same code as in PortableRemoteObject. Can not be shared because they
     // are in different packages and the visibility needs to be package for
     // security reasons. If you know a better solution how to share this code
     // then remove it from PortableRemoteObject. Also in Stub.java
     private static Object createDelegate(String classKey) {
         String className = (String)
             AccessController.doPrivileged(new GetPropertyAction(classKey));
         if (className == null) {
             Properties props = getORBPropertiesFile();
             if (props != null) {
                 className = props.getProperty(classKey);
             }
         }
         if (className == null) {
             return new com.sun.corba.se.impl.javax.rmi.CORBA.Util();
         }
         try {
             return loadDelegateClass(className).newInstance();
         } catch (ClassNotFoundException ex) {
             INITIALIZE exc = new INITIALIZE( "Cannot instantiate " + className);
             exc.initCause( ex ) ;
             throw exc ;
         } catch (Exception ex) {
             INITIALIZE exc = new INITIALIZE( "Error while instantiating" + className);
             exc.initCause( ex ) ;
             throw exc ;
         }
     }
     private static Class loadDelegateClass( String className )  throws ClassNotFoundException
     {
         try {
             ClassLoader loader = Thread.currentThread().getContextClassLoader();
             return Class.forName(className, false, loader);
         } catch (ClassNotFoundException e) {
             // ignore, then try RMIClassLoader
         }
         try {
             return RMIClassLoader.loadClass(className);
         } catch (MalformedURLException e) {
             String msg = "Could not load " + className + ": " + e.toString();
             ClassNotFoundException exc = new ClassNotFoundException( msg ) ;
             throw exc ;
         }
     }
     /**
      * Load the orb.properties file.
      */
     private static Properties getORBPropertiesFile ()
     {
         return (Properties) AccessController.doPrivileged(
             new GetORBPropertiesFileAction());
     }
     private static void isCustomSerializationPermitted() {
         SecurityManager sm = System.getSecurityManager();
         if (!allowCustomValueHandler) {
             if ( sm != null) {
                 // check that a serialization permission has been
                 // set to allow the loading of the Util delegate
                 // which provides access to custom ValueHandler
                 sm.checkPermission(new SerializablePermission(
                         "enableCustomValueHandler"));
             }
         }
     }
 }

Mercurial > jdk8-mips64-public > corba / annotate

src/share/classes/javax/rmi/CORBA/Util.java@9c913ea7e4a1 (annotated)

src/share/classes/javax/rmi/CORBA/Util.java