jdk8-mips64-public/corba: comparison src/share/classes/javax/rmi/PortableRemoteObject.java

--1:000000000000
+:55540e827aef
+/*
+* Copyright 1998-2004 Sun Microsystems, Inc.  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.  Sun designates this
+* particular file as subject to the "Classpath" exception as provided
+* by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+* CA 95054 USA or visit www.sun.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;
+import java.lang.reflect.Method ;
+import org.omg.CORBA.INITIALIZE;
+import javax.rmi.CORBA.Util;
+import java.rmi.RemoteException;
+import java.rmi.NoSuchObjectException;
+import java.rmi.Remote;
+import java.io.File;
+import java.io.FileInputStream;
+import java.util.Properties;
+import java.net.MalformedURLException ;
+import java.security.AccessController;
+import java.security.PrivilegedAction;
+import java.rmi.server.RMIClassLoader;
+import com.sun.corba.se.impl.orbutil.GetPropertyAction;
+/**
+* Server implementation objects may either inherit from
+* javax.rmi.PortableRemoteObject or they may implement a remote interface
+* and then use the exportObject method to register themselves as a server object.
+* The toStub method takes a server implementation and returns a stub that
+* can be used to access that server object.
+* The connect method makes a Remote object ready for remote communication.
+* The unexportObject method is used to deregister a server object, allowing it to become
+* available for garbage collection.
+* The narrow method takes an object reference or abstract interface type and
+* attempts to narrow it to conform to
+* the given interface. If the operation is successful the result will be an
+* object of the specified type, otherwise an exception will be thrown.
+*/
+public class PortableRemoteObject {
+private static javax.rmi.CORBA.PortableRemoteObjectDelegate proDelegate = null;
+private static final String PortableRemoteObjectClassKey =
+"javax.rmi.CORBA.PortableRemoteObjectClass";
+private static final String defaultPortableRemoteObjectImplName =
+"com.sun.corba.se.impl.javax.rmi.PortableRemoteObject";
+static {
+proDelegate = (javax.rmi.CORBA.PortableRemoteObjectDelegate)
+createDelegateIfSpecified(PortableRemoteObjectClassKey);
+}
+/**
+* Initializes the object by calling <code>exportObject(this)</code>.
+* @exception RemoteException if export fails.
+*/
+protected PortableRemoteObject() throws RemoteException {
+if (proDelegate != null) {
+PortableRemoteObject.exportObject((Remote)this);
+}
+}
+/**
+* Makes a server object ready to receive remote calls. Note
+* that subclasses of PortableRemoteObject do not need to call this
+* method, as it is called by the constructor.
+* @param obj the server object to export.
+* @exception RemoteException if export fails.
+*/
+public static void exportObject(Remote obj)
+throws RemoteException {
+// Let the delegate do everything, including error handling.
+if (proDelegate != null) {
+proDelegate.exportObject(obj);
+}
+}
+/**
+* Returns a stub for the given server object.
+* @param obj the server object for which a stub is required. Must either be a subclass
+* of PortableRemoteObject or have been previously the target of a call to
+* {@link #exportObject}.
+* @return the most derived stub for the object.
+* @exception NoSuchObjectException if a stub cannot be located for the given server object.
+*/
+public static Remote toStub (Remote obj)
+throws NoSuchObjectException {
+if (proDelegate != null) {
+return proDelegate.toStub(obj);
+}
+return null;
+}
+/**
+* Deregisters a server object from the runtime, allowing the object to become
+* available for garbage collection.
+* @param obj the object to unexport.
+* @exception NoSuchObjectException if the remote object is not
+* currently exported.
+*/
+public static void unexportObject(Remote obj)
+throws NoSuchObjectException {
+if (proDelegate != null) {
+proDelegate.unexportObject(obj);
+}
+}
+/**
+* Checks to ensure that an object of a remote or abstract interface type
+* can be cast to a desired type.
+* @param narrowFrom the object to check.
+* @param narrowTo the desired type.
+* @return an object which can be cast to the desired type.
+* @throws ClassCastException if narrowFrom cannot be cast to narrowTo.
+*/
+public static java.lang.Object narrow ( java.lang.Object narrowFrom,
+java.lang.Class narrowTo)
+throws ClassCastException {
+if (proDelegate != null) {
+return proDelegate.narrow(narrowFrom, narrowTo);
+}
+return null;
+}
+/**
+* Makes a Remote object ready for remote communication. This normally
+* happens implicitly when the object is sent or received as an argument
+* on a remote method call, but in some circumstances it is useful to
+* perform this action by making an explicit call.  See the
+* {@link Stub#connect} method for more information.
+* @param target the object to connect.
+* @param source a previously connected object.
+* @throws RemoteException if <code>source</code> is not connected
+* or if <code>target</code> is already connected to a different ORB than
+* <code>source</code>.
+*/
+public static void connect (Remote target, Remote source)
+throws RemoteException {
+if (proDelegate != null) {
+proDelegate.connect(target, source);
+}
+}
+// Same code as in javax.rmi.CORBA.Util. 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 here.
+private static Object createDelegateIfSpecified(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) {
+className = defaultPortableRemoteObjectImplName;
+}
+try {
+return (Object) 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());
+}
+}
+class GetORBPropertiesFileAction implements PrivilegedAction {
+private boolean debug = false ;
+public GetORBPropertiesFileAction () {
+}
+private String getSystemProperty(final String name) {
+// This will not throw a SecurityException because this
+// class was loaded from rt.jar using the bootstrap classloader.
+String propValue = (String) AccessController.doPrivileged(
+new PrivilegedAction() {
+public java.lang.Object run() {
+return System.getProperty(name);
+}
+}
+);
+return propValue;
+}
+private void getPropertiesFromFile( Properties props, String fileName )
+{
+try {
+File file = new File( fileName ) ;
+if (!file.exists())
+return ;
+FileInputStream in = new FileInputStream( file ) ;
+try {
+props.load( in ) ;
+} finally {
+in.close() ;
+}
+} catch (Exception exc) {
+if (debug)
+System.out.println( "ORB properties file " + fileName +
+" not found: " + exc) ;
+}
+}
+public Object run()
+{
+Properties defaults = new Properties() ;
+String javaHome = getSystemProperty( "java.home" ) ;
+String fileName = javaHome + File.separator + "lib" + File.separator +
+"orb.properties" ;
+getPropertiesFromFile( defaults, fileName ) ;
+Properties results = new Properties( defaults ) ;
+String userHome = getSystemProperty( "user.home" ) ;
+fileName = userHome + File.separator + "orb.properties" ;
+getPropertiesFromFile( results, fileName ) ;
+return results ;
+}
+}

Mercurial > jdk8-mips64-public > corba / file comparison

comparison: src/share/classes/javax/rmi/PortableRemoteObject.java

src/share/classes/javax/rmi/PortableRemoteObject.java