corba/src/share/classes/javax/rmi/CORBA/Stub.java - edge/openjdk - Git at Google

 /*
  * Copyright (c) 1998, 2013, 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 org.omg.CORBA.ORB;
 import org.omg.CORBA.INITIALIZE;
 import org.omg.CORBA_2_3.portable.ObjectImpl;

 import java.io.IOException;
 import java.rmi.RemoteException;
 import java.io.File;
 import java.io.FileInputStream;
 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;


 /**
  * Base class from which all RMI-IIOP stubs must inherit.
  */
 public abstract class Stub extends ObjectImpl
     implements java.io.Serializable {

     private static final long serialVersionUID = 1087775603798577179L;

     // This can only be set at object construction time (no sync necessary).
     private transient StubDelegate stubDelegate = null;
     private static Class stubDelegateClass = null;
     private static final String StubClassKey = "javax.rmi.CORBA.StubClass";

     static {
         Object stubDelegateInstance = createDelegate(StubClassKey);
         if (stubDelegateInstance != null)
             stubDelegateClass = stubDelegateInstance.getClass();
     }


     /**
      * Returns a hash code value for the object which is the same for all stubs
      * that represent the same remote object.
      * @return the hash code value.
      */
     public int hashCode() {

         if (stubDelegate == null) {
             setDefaultDelegate();
         }

         if (stubDelegate != null) {
             return stubDelegate.hashCode(this);
         }

         return 0;
     }

     /**
      * Compares two stubs for equality. Returns <code>true</code> when used to compare stubs
      * that represent the same remote object, and <code>false</code> otherwise.
      * @param obj the reference object with which to compare.
      * @return <code>true</code> if this object is the same as the <code>obj</code>
      *          argument; <code>false</code> otherwise.
      */
     public boolean equals(java.lang.Object obj) {

         if (stubDelegate == null) {
             setDefaultDelegate();
         }

         if (stubDelegate != null) {
             return stubDelegate.equals(this, obj);
         }

         return false;
     }

     /**
      * Returns a string representation of this stub. Returns the same string
      * for all stubs that represent the same remote object.
      * @return a string representation of this stub.
      */
     public String toString() {


         if (stubDelegate == null) {
             setDefaultDelegate();
         }

         String ior;
         if (stubDelegate != null) {
             ior = stubDelegate.toString(this);
             if (ior == null) {
                 return super.toString();
             } else {
                 return ior;
             }
         }
         return super.toString();
     }

     /**
      * Connects this stub to an ORB. Required after the stub is deserialized
      * but not after it is demarshalled by an ORB stream. If an unconnected
      * stub is passed to an ORB stream for marshalling, it is implicitly
      * connected to that ORB. Application code should not call this method
      * directly, but should call the portable wrapper method
      * {@link javax.rmi.PortableRemoteObject#connect}.
      * @param orb the ORB to connect to.
      * @exception RemoteException if the stub is already connected to a different
      * ORB, or if the stub does not represent an exported remote or local object.
      */
     public void connect(ORB orb) throws RemoteException {

         if (stubDelegate == null) {
             setDefaultDelegate();
         }

         if (stubDelegate != null) {
             stubDelegate.connect(this, orb);
         }

     }

     /**
      * Serialization method to restore the IOR state.
      */
     private void readObject(java.io.ObjectInputStream stream)
         throws IOException, ClassNotFoundException {

         if (stubDelegate == null) {
             setDefaultDelegate();
         }

         if (stubDelegate != null) {
             stubDelegate.readObject(this, stream);
         }

     }

     /**
      * Serialization method to save the IOR state.
      * @serialData The length of the IOR type ID (int), followed by the IOR type ID
      * (byte array encoded using ISO8859-1), followed by the number of IOR profiles
      * (int), followed by the IOR profiles.  Each IOR profile is written as a
      * profile tag (int), followed by the length of the profile data (int), followed
      * by the profile data (byte array).
      */
     private void writeObject(java.io.ObjectOutputStream stream) throws IOException {

         if (stubDelegate == null) {
             setDefaultDelegate();
         }

         if (stubDelegate != null) {
             stubDelegate.writeObject(this, stream);
         }
     }

     private void setDefaultDelegate() {
         if (stubDelegateClass != null) {
             try {
                  stubDelegate = (javax.rmi.CORBA.StubDelegate) stubDelegateClass.newInstance();
             } catch (Exception ex) {
             // what kind of exception to throw
             // delegate not set therefore it is null and will return default
             // values
             }
         }
     }

     // 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 Util.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.StubDelegateImpl();
         }

         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());
     }

 }
	/*
	* Copyright (c) 1998, 2013, 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 org.omg.CORBA.ORB;
	import org.omg.CORBA.INITIALIZE;
	import org.omg.CORBA_2_3.portable.ObjectImpl;

	import java.io.IOException;
	import java.rmi.RemoteException;
	import java.io.File;
	import java.io.FileInputStream;
	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;


	/**
	* Base class from which all RMI-IIOP stubs must inherit.
	*/
	public abstract class Stub extends ObjectImpl
	implements java.io.Serializable {

	private static final long serialVersionUID = 1087775603798577179L;

	// This can only be set at object construction time (no sync necessary).
	private transient StubDelegate stubDelegate = null;
	private static Class stubDelegateClass = null;
	private static final String StubClassKey = "javax.rmi.CORBA.StubClass";

	static {
	Object stubDelegateInstance = createDelegate(StubClassKey);
	if (stubDelegateInstance != null)
	stubDelegateClass = stubDelegateInstance.getClass();
	}


	/**
	* Returns a hash code value for the object which is the same for all stubs
	* that represent the same remote object.
	* @return the hash code value.
	*/
	public int hashCode() {

	if (stubDelegate == null) {
	setDefaultDelegate();
	}

	if (stubDelegate != null) {
	return stubDelegate.hashCode(this);
	}

	return 0;
	}

	/**
	* Compares two stubs for equality. Returns <code>true</code> when used to compare stubs
	* that represent the same remote object, and <code>false</code> otherwise.
	* @param obj the reference object with which to compare.
	* @return <code>true</code> if this object is the same as the <code>obj</code>
	* argument; <code>false</code> otherwise.
	*/
	public boolean equals(java.lang.Object obj) {

	if (stubDelegate == null) {
	setDefaultDelegate();
	}

	if (stubDelegate != null) {
	return stubDelegate.equals(this, obj);
	}

	return false;
	}

	/**
	* Returns a string representation of this stub. Returns the same string
	* for all stubs that represent the same remote object.
	* @return a string representation of this stub.
	*/
	public String toString() {


	if (stubDelegate == null) {
	setDefaultDelegate();
	}

	String ior;
	if (stubDelegate != null) {
	ior = stubDelegate.toString(this);
	if (ior == null) {
	return super.toString();
	} else {
	return ior;
	}
	}
	return super.toString();
	}

	/**
	* Connects this stub to an ORB. Required after the stub is deserialized
	* but not after it is demarshalled by an ORB stream. If an unconnected
	* stub is passed to an ORB stream for marshalling, it is implicitly
	* connected to that ORB. Application code should not call this method
	* directly, but should call the portable wrapper method
	* {@link javax.rmi.PortableRemoteObject#connect}.
	* @param orb the ORB to connect to.
	* @exception RemoteException if the stub is already connected to a different
	* ORB, or if the stub does not represent an exported remote or local object.
	*/
	public void connect(ORB orb) throws RemoteException {

	if (stubDelegate == null) {
	setDefaultDelegate();
	}

	if (stubDelegate != null) {
	stubDelegate.connect(this, orb);
	}

	}

	/**
	* Serialization method to restore the IOR state.
	*/
	private void readObject(java.io.ObjectInputStream stream)
	throws IOException, ClassNotFoundException {

	if (stubDelegate == null) {
	setDefaultDelegate();
	}

	if (stubDelegate != null) {
	stubDelegate.readObject(this, stream);
	}

	}

	/**
	* Serialization method to save the IOR state.
	* @serialData The length of the IOR type ID (int), followed by the IOR type ID
	* (byte array encoded using ISO8859-1), followed by the number of IOR profiles
	* (int), followed by the IOR profiles. Each IOR profile is written as a
	* profile tag (int), followed by the length of the profile data (int), followed
	* by the profile data (byte array).
	*/
	private void writeObject(java.io.ObjectOutputStream stream) throws IOException {

	if (stubDelegate == null) {
	setDefaultDelegate();
	}

	if (stubDelegate != null) {
	stubDelegate.writeObject(this, stream);
	}
	}

	private void setDefaultDelegate() {
	if (stubDelegateClass != null) {
	try {
	stubDelegate = (javax.rmi.CORBA.StubDelegate) stubDelegateClass.newInstance();
	} catch (Exception ex) {
	// what kind of exception to throw
	// delegate not set therefore it is null and will return default
	// values
	}
	}
	}

	// 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 Util.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.StubDelegateImpl();
	}

	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());
	}

	}