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+/* ValueHandler.java --
+   Copyright (C) 2002, 2004, 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 javax.rmi.CORBA;
+
+import java.io.Serializable;
+
+import org.omg.CORBA.CustomMarshal;
+import org.omg.CORBA.portable.InputStream;
+import org.omg.CORBA.portable.OutputStream;
+import org.omg.CORBA.portable.Streamable;
+import org.omg.SendingContext.RunTime;
+
+/**
+ * Serializes Java objects to and from CDR (GIOP) streams. The working instance
+ * of the value handler is returned by {@link Util#createValueHandler} and can
+ * be altered by setting the system property "javax.rmi.CORBA.ValueHandlerClass"
+ * to the name of the alternative class that must implement ValueHandler.
+ *
+ * @author Audrius Meskauskas (AudriusA@Bioinformatics.org)
+ */
+public interface ValueHandler
+{
+  /**
+   * Get CORBA repository Id for the given java class.
+   *
+   * The syntax of the repository ID is the initial ?RMI:?, followed by the Java
+   * class name, followed by name, followed by a hash code string, followed
+   * optionally by a serialization version UID string.
+   *
+   * For Java identifiers that contain illegal OMG IDL identifier characters
+   * such as ?$?, any such illegal characters are replaced by ?\U? followed by
+   * the 4 hexadecimal characters (in upper case) representing the Unicode
+   * value.
+   *
+   * @param clz a class for that the repository Id is required.
+   *
+   * @return the class repository id.
+   */
+  String getRMIRepositoryID(Class clz);
+
+  /**
+   * Returns the CodeBase for this ValueHandler.
+   *
+   * @return the codebase.
+   */
+  RunTime getRunTimeCodeBase();
+
+  /**
+   * Indicates that the given class is responsible itself for writing its
+   * content to the stream. Such classes implement either {@link Streamable}
+   * (default marshalling, generated by IDL-to-java compiler) or
+   * {@link CustomMarshal} (the user-programmed marshalling).
+   *
+   * @param clz the class being checked.
+   * @return true if the class supports custom or default marshalling, false
+   * otherwise.
+   */
+  boolean isCustomMarshaled(Class clz);
+
+  /**
+   * Read value from the CORBA input stream in the case when the value is not
+   * Streamable or CustomMarshall'ed. The fields of the class being written will
+   * be accessed using reflection.
+   *
+   * @param in a CORBA stream to read.
+   * @param offset the current position in the input stream.
+   * @param clz the type of value being read.
+   * @param repositoryID the repository Id of the value being read.
+   * @param sender the sending context that should provide data about the
+   * message originator.
+   *
+   * @return the object, extracted from the stream.
+   */
+  Serializable readValue(InputStream in, int offset, Class clz,
+    String repositoryID, RunTime sender);
+
+  /**
+   * When the value provides the writeReplace method, the result of this method
+   * is written. Otherwise, the value itself is written.
+   *
+   * @param value the value that should be written to the stream.
+   *
+   * @return the value that will be actually written to the stream.
+   */
+  Serializable writeReplace(Serializable value);
+
+  /**
+   * Write value to CORBA output stream using java senmatics.
+   *
+   * @param out a stream to write into.
+   * @param value a java object to write.
+   */
+  void writeValue(OutputStream out, Serializable value);
+}