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131 lines
4.8 KiB
Java
131 lines
4.8 KiB
Java
/* ValueHandler.java --
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Copyright (C) 2002, 2004, 2005 Free Software Foundation, Inc.
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This file is part of GNU Classpath.
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GNU Classpath is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU Classpath is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU Classpath; see the file COPYING. If not, write to the
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Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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02110-1301 USA.
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Linking this library statically or dynamically with other modules is
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making a combined work based on this library. Thus, the terms and
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conditions of the GNU General Public License cover the whole
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combination.
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As a special exception, the copyright holders of this library give you
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permission to link this library with independent modules to produce an
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executable, regardless of the license terms of these independent
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modules, and to copy and distribute the resulting executable under
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terms of your choice, provided that you also meet, for each linked
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independent module, the terms and conditions of the license of that
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module. An independent module is a module which is not derived from
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or based on this library. If you modify this library, you may extend
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this exception to your version of the library, but you are not
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obligated to do so. If you do not wish to do so, delete this
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exception statement from your version. */
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package javax.rmi.CORBA;
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import java.io.Serializable;
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import org.omg.CORBA.CustomMarshal;
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import org.omg.CORBA.portable.InputStream;
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import org.omg.CORBA.portable.OutputStream;
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import org.omg.CORBA.portable.Streamable;
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import org.omg.SendingContext.RunTime;
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/**
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* Serializes Java objects to and from CDR (GIOP) streams. The working instance
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* of the value handler is returned by {@link Util#createValueHandler} and can
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* be altered by setting the system property "javax.rmi.CORBA.ValueHandlerClass"
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* to the name of the alternative class that must implement ValueHandler.
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*
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* @author Audrius Meskauskas (AudriusA@Bioinformatics.org)
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*/
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public interface ValueHandler
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{
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/**
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* Get CORBA repository Id for the given java class.
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*
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* The syntax of the repository ID is the initial ?RMI:?, followed by the Java
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* class name, followed by name, followed by a hash code string, followed
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* optionally by a serialization version UID string.
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*
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* For Java identifiers that contain illegal OMG IDL identifier characters
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* such as ?$?, any such illegal characters are replaced by ?\U? followed by
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* the 4 hexadecimal characters (in upper case) representing the Unicode
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* value.
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*
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* @param clz a class for that the repository Id is required.
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*
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* @return the class repository id.
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*/
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String getRMIRepositoryID(Class clz);
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/**
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* Returns the CodeBase for this ValueHandler.
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*
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* @return the codebase.
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*/
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RunTime getRunTimeCodeBase();
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/**
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* Indicates that the given class is responsible itself for writing its
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* content to the stream. Such classes implement either {@link Streamable}
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* (default marshalling, generated by IDL-to-java compiler) or
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* {@link CustomMarshal} (the user-programmed marshalling).
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*
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* @param clz the class being checked.
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* @return true if the class supports custom or default marshalling, false
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* otherwise.
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*/
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boolean isCustomMarshaled(Class clz);
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/**
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* Read value from the CORBA input stream in the case when the value is not
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* Streamable or CustomMarshall'ed. The fields of the class being written will
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* be accessed using reflection.
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*
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* @param in a CORBA stream to read.
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* @param offset the current position in the input stream.
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* @param clz the type of value being read.
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* @param repositoryID the repository Id of the value being read.
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* @param sender the sending context that should provide data about the
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* message originator.
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*
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* @return the object, extracted from the stream.
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*/
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Serializable readValue(InputStream in, int offset, Class clz,
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String repositoryID, RunTime sender);
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/**
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* When the value provides the writeReplace method, the result of this method
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* is written. Otherwise, the value itself is written.
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*
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* @param value the value that should be written to the stream.
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*
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* @return the value that will be actually written to the stream.
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*/
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Serializable writeReplace(Serializable value);
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/**
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* Write value to CORBA output stream using java senmatics.
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*
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* @param out a stream to write into.
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* @param value a java object to write.
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*/
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void writeValue(OutputStream out, Serializable value);
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}
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