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Diffstat (limited to 'libjava/classpath/gnu/javax/rmi/CORBA/ValueHandlerDelegateImpl.java')
| -rw-r--r-- | libjava/classpath/gnu/javax/rmi/CORBA/ValueHandlerDelegateImpl.java | 163 |
1 files changed, 163 insertions, 0 deletions
diff --git a/libjava/classpath/gnu/javax/rmi/CORBA/ValueHandlerDelegateImpl.java b/libjava/classpath/gnu/javax/rmi/CORBA/ValueHandlerDelegateImpl.java new file mode 100644 index 00000000000..dc3b3cd6ee8 --- /dev/null +++ b/libjava/classpath/gnu/javax/rmi/CORBA/ValueHandlerDelegateImpl.java @@ -0,0 +1,163 @@ +/* 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(); + } +}
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