| /* ValueHandlerDelegateImpl.java -- |
| Copyright (C) 2005 Free Software Foundation, Inc. |
| |
| This file is part of GNU Classpath. |
| |
| GNU Classpath is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 2, or (at your option) |
| any later version. |
| |
| GNU Classpath 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 for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with GNU Classpath; see the file COPYING. If not, write to the |
| Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
| 02110-1301 USA. |
| |
| Linking this library statically or dynamically with other modules is |
| making a combined work based on this library. Thus, the terms and |
| conditions of the GNU General Public License cover the whole |
| combination. |
| |
| As a special exception, the copyright holders of this library give you |
| permission to link this library with independent modules to produce an |
| executable, regardless of the license terms of these independent |
| modules, and to copy and distribute the resulting executable under |
| terms of your choice, provided that you also meet, for each linked |
| independent module, the terms and conditions of the license of that |
| module. An independent module is a module which is not derived from |
| or based on this library. If you modify this library, you may extend |
| this exception to your version of the library, but you are not |
| obligated to do so. If you do not wish to do so, delete this |
| exception statement from your version. */ |
| |
| |
| package gnu.javax.rmi.CORBA; |
| |
| import gnu.CORBA.CDR.gnuRuntime; |
| |
| import org.omg.CORBA.BAD_PARAM; |
| import org.omg.CORBA.CustomMarshal; |
| import org.omg.CORBA.portable.OutputStream; |
| import org.omg.CORBA.portable.Streamable; |
| import org.omg.SendingContext.RunTime; |
| |
| import java.io.Externalizable; |
| import java.io.ObjectStreamClass; |
| import java.io.Serializable; |
| import java.rmi.Remote; |
| |
| import javax.rmi.CORBA.ValueHandler; |
| import javax.rmi.CORBA.ValueHandlerMultiFormat; |
| |
| /** |
| * Implementation of the ValueHandler. |
| * |
| * @author Audrius Meskauskas (AudriusA@Bioinformatics.org) (implementation) |
| */ |
| public class ValueHandlerDelegateImpl |
| extends RmiUtilities |
| implements ValueHandler, ValueHandlerMultiFormat |
| { |
| /** |
| * Return the maximal supported stream format version. We currently |
| * support the version 1. |
| * |
| * TODO Support the version 2. |
| */ |
| public byte getMaximumStreamFormatVersion() |
| { |
| return 1; |
| } |
| |
| /** |
| * Write value using the given stream format version. |
| */ |
| public void writeValue(OutputStream output, Serializable value, byte version) |
| { |
| if (version!=1) |
| throw new BAD_PARAM("Unsupported stream format version "+version); |
| else |
| writeValue(output, value); |
| } |
| |
| /** |
| * This implementation associates RunTime with stream rather than with the |
| * value handler and this method is not used in the implementation. It is |
| * implemented just for the sake of compatibility. |
| */ |
| public RunTime getRunTimeCodeBase() |
| { |
| return new gnuRuntime(null, null); |
| } |
| |
| /** |
| * Checks if an instance of this class can write its fields itself. |
| */ |
| public boolean isCustomMarshaled(Class clz) |
| { |
| return CustomMarshal.class.isAssignableFrom(clz) |
| || Streamable.class.isAssignableFrom(clz); |
| } |
| |
| /** |
| * No replacement, returns the passed parameter. |
| */ |
| public Serializable writeReplace(Serializable value) |
| { |
| return value; |
| } |
| |
| /** |
| * Compute the repository id in the RMI hashed format. |
| */ |
| public String getRMIRepositoryID(final Class cx) |
| { |
| long hash = 0; |
| Class of = cx.isArray() ? cx.getComponentType() : null; |
| |
| if (cx.equals(String[].class)) |
| return RMI_STRING_ARRAY_ID; |
| else if (cx.equals(String.class)) |
| return RMI_STRING_ID; |
| else if (cx.equals(Class.class)) |
| return RMI_CLASS_ID; |
| else if (Remote.class.isAssignableFrom(cx) |
| || !Serializable.class.isAssignableFrom(cx) |
| || cx.isInterface() |
| || (cx.isArray() && (!Serializable.class.isAssignableFrom(of) |
| || of.isPrimitive() || Remote.class.isAssignableFrom(of))) |
| |
| ) |
| // Some classes that have zero hash code and serial no version id |
| // included. |
| return "RMI:" + cx.getName() + ":" + toHex(hash); |
| else if (cx.isArray()) |
| // Arrays have the same hashcode and uid as they components. |
| return "RMI:" + cx.getName() + ":" + toHex(getHashCode(of)) + ":" |
| + toHex(getSid(of)); |
| else |
| { |
| if (Externalizable.class.isAssignableFrom(cx)) |
| hash = 1; |
| else |
| hash = getHashCode(cx); |
| |
| return "RMI:" + cx.getName() + ":" + toHex(hash) + ":" |
| + toHex(getSid(cx)); |
| } |
| } |
| |
| /** |
| * Get the class serial version UID. |
| */ |
| long getSid(Class cx) |
| { |
| ObjectStreamClass osc = ObjectStreamClass.lookup(cx); |
| return osc.getSerialVersionUID(); |
| } |
| } |