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172 lines
5.0 KiB
Java
172 lines
5.0 KiB
Java
/* DynAnyHelper.java --
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Copyright (C) 2005, 2006 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 org.omg.DynamicAny;
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import gnu.CORBA.OrbRestricted;
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import org.omg.CORBA.BAD_OPERATION;
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import org.omg.CORBA.BAD_PARAM;
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import org.omg.CORBA.TypeCode;
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import org.omg.CORBA.Any;
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import org.omg.CORBA.portable.InputStream;
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import org.omg.CORBA.MARSHAL;
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import org.omg.CORBA.portable.OutputStream;
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/**
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* The helper operations for {@link DynAny}. Following the 1.5 JDK
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* specifications, DynAny is always a local object, so the two methods of this
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* helper ({@link #read} and {@link #write} are not in use, always throwing
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* {@link MARSHAL}.
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*
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* @specnote always throwing MARSHAL in read and write ensures compatibility
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* with other popular implementations like Sun's.
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*
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* @author Audrius Meskauskas, Lithuania (AudriusA@Bioinformatics.org)
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*/
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public abstract class DynAnyHelper
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{
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/**
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* Cast the passed object into the DynAny. As DynAny is a local object, the
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* method just uses java type cast.
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*
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* @param obj the object to narrow.
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* @return narrowed instance.
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* @throws BAD_PARAM if the passed object is not a DynAny.
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*/
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public static DynAny narrow(org.omg.CORBA.Object obj)
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{
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try
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{
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return (DynAny) obj;
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}
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catch (ClassCastException cex)
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{
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throw new BAD_PARAM(obj.getClass().getName() + " is not a DynAny");
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}
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}
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/**
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* Narrow the given object to the DynAny. For the objects that are
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* always local, this operation does not differ from the ordinary
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* {@link #narrow} (ClassCastException will be thrown if narrowing something
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* different). See also OMG issue 4158.
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*
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* @param obj the object to cast.
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*
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* @return the casted DynAny.
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*
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* @since 1.5
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*/
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public static DynAny unchecked_narrow(org.omg.CORBA.Object obj)
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{
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return narrow(obj);
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}
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/**
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* Get the type code of the {@link DynAny}.
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*/
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public static TypeCode type()
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{
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return OrbRestricted.Singleton.create_interface_tc(id(), "DynAny");
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}
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/**
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* Insert the DynAny into the given Any.
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*
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* @param any the Any to insert into.
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*
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* @param that the DynAny to insert.
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*/
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public static void insert(Any any, DynAny that)
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{
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any.insert_Object(that);
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}
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/**
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* Extract the DynAny from given Any.
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*
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* @throws BAD_OPERATION if the passed Any does not contain DynAny.
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*/
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public static DynAny extract(Any any)
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{
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return narrow(any.extract_Object());
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}
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/**
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* Get the DynAny repository id.
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*
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* @return "IDL:omg.org/DynamicAny/DynAny:1.0", always.
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*/
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public static String id()
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{
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return "IDL:omg.org/DynamicAny/DynAny:1.0";
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}
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/**
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* This should read DynAny from the CDR input stream, but (following the JDK
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* 1.5 API) it does not.
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*
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* @param input a org.omg.CORBA.portable stream to read from.
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*
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* @specenote Sun throws the same exception.
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*
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* @throws MARSHAL always.
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*/
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public static DynAny read(InputStream input)
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{
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throw new MARSHAL(DynAnyFactoryHelper.not_applicable(id()));
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}
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/**
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* This should read DynAny from the CDR input stream, but (following the JDK
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* 1.5 API) it does not.
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*
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* @param output a org.omg.CORBA.portable stream to write into.
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*
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* @specenote Sun throws the same exception.
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*
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* @throws MARSHAL always.
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*/
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public static void write(OutputStream output, DynAny value)
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{
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throw new MARSHAL(DynAnyFactoryHelper.not_applicable(id()));
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}
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}
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