1 /* POAHelper.java --
2    Copyright (C) 2005 Free Software Foundation, Inc.
3 
4 This file is part of GNU Classpath.
5 
6 GNU Classpath is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2, or (at your option)
9 any later version.
10 
11 GNU Classpath is distributed in the hope that it will be useful, but
12 WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14 General Public License for more details.
15 
16 You should have received a copy of the GNU General Public License
17 along with GNU Classpath; see the file COPYING.  If not, write to the
18 Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
19 02110-1301 USA.
20 
21 Linking this library statically or dynamically with other modules is
22 making a combined work based on this library.  Thus, the terms and
23 conditions of the GNU General Public License cover the whole
24 combination.
25 
26 As a special exception, the copyright holders of this library give you
27 permission to link this library with independent modules to produce an
28 executable, regardless of the license terms of these independent
29 modules, and to copy and distribute the resulting executable under
30 terms of your choice, provided that you also meet, for each linked
31 independent module, the terms and conditions of the license of that
32 module.  An independent module is a module which is not derived from
33 or based on this library.  If you modify this library, you may extend
34 this exception to your version of the library, but you are not
35 obligated to do so.  If you do not wish to do so, delete this
36 exception statement from your version. */
37 
38 
39 package org.omg.PortableServer;
40 
41 import gnu.CORBA.Minor;
42 
43 import org.omg.CORBA.BAD_PARAM;
44 import org.omg.CORBA.TypeCode;
45 import org.omg.CORBA.ORB;
46 import org.omg.CORBA.Any;
47 import org.omg.CORBA.portable.InputStream;
48 import org.omg.CORBA.MARSHAL;
49 import org.omg.CORBA.portable.OutputStream;
50 
51 /**
52  * The helper operations for the CORBA object {@link POA}.
53  *
54  * @author Audrius Meskauskas, Lithuania (AudriusA@Bioinformatics.org)
55  */
56 public abstract class POAHelper
57 {
58   /**
59    * Cast the passed object into the POA. As POA is a local object, the method
60    * just uses java type cast.
61    *
62    * @param obj the object to narrow.
63    * @return narrowed instance.
64    * @throws BAD_PARAM if the passed object is not a POA.
65    */
narrow(org.omg.CORBA.Object obj)66   public static POA narrow(org.omg.CORBA.Object obj)
67   {
68     try
69       {
70         return (POA) obj;
71       }
72     catch (ClassCastException cex)
73       {
74         throw new BAD_PARAM(obj.getClass().getName() + " is not a POA");
75       }
76   }
77 
78   /**
79    * Get the type code of the {@link POA}.
80    */
type()81   public static TypeCode type()
82   {
83     return ORB.init().create_interface_tc(id(), "POA");
84   }
85 
86   /**
87    * Insert the POA into the given Any.
88    *
89    * @param any the Any to insert into.
90    *
91    * @param that the POA to insert.
92    */
insert(Any any, POA that)93   public static void insert(Any any, POA that)
94   {
95     any.insert_Object(that);
96   }
97 
98   /**
99    * Extract the POA from given Any.
100    *
101    * @throws BAD_OPERATION if the passed Any does not contain POA.
102    */
extract(Any any)103   public static POA extract(Any any)
104   {
105     return narrow(any.extract_Object());
106   }
107 
108   /**
109    * Get the POA repository id.
110    *
111    * @return "IDL:omg.org/PortableServer/POA:2.3", always.
112    */
id()113   public static String id()
114   {
115     return "IDL:omg.org/PortableServer/POA:2.3";
116   }
117 
118   /**
119    * This should read POA from the CDR input stream, but, following the specs,
120    * it doesnot. The jdk 1.5 API specification defines that POA cannot be
121    * exported.
122    *
123    * @param input a org.omg.CORBA.portable stream to read from.
124    *
125    * @specenote Sun throws the same exception.
126    *
127    * @throws MARSHAL, always.
128    */
read(InputStream input)129   public static POA read(InputStream input)
130   {
131     MARSHAL m = new MARSHAL("Inappropriate");
132     m.minor = Minor.Inappropriate;
133     throw m;
134   }
135 
136   /**
137    * This should read POA from the CDR input stream, but, following the specs,
138    * it doesnot. The jdk 1.5 API specification defines that POA cannot be
139    * exported.
140    *
141    * @param input a org.omg.CORBA.portable stream to read from.
142    *
143    * @specenote Sun throws the same exception.
144    *
145    * @throws MARSHAL, always.
146    */
write(OutputStream output, POA value)147   public static void write(OutputStream output, POA value)
148   {
149     MARSHAL m = new MARSHAL("Inappropriate");
150     m.minor = Minor.Inappropriate;
151     throw m;
152   }
153 }