1 /* PolicyHelper.java --
2    Copyright (C) 2005, 2006 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
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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
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36 exception statement from your version. */
37 
38 
39 package org.omg.CORBA;
40 
41 import gnu.CORBA.Minor;
42 import gnu.CORBA.OrbRestricted;
43 
44 import org.omg.CORBA.Any;
45 import org.omg.CORBA.BAD_OPERATION;
46 import org.omg.CORBA.TypeCode;
47 import org.omg.CORBA.portable.Delegate;
48 import org.omg.CORBA.portable.InputStream;
49 import org.omg.CORBA.portable.ObjectImpl;
50 import org.omg.CORBA.portable.OutputStream;
51 
52 /**
53 * The helper operations for the
54 * CORBA object {@link Policy}.
55 *
56 * @author Audrius Meskauskas, Lithuania (AudriusA@Bioinformatics.org)
57 */
58 public abstract class PolicyHelper
59 {
60   /**
61    * Get the type code of the {@link Policy}.
62    *
63    * @return interface typecode, named "Policy".
64    */
type()65   public static TypeCode type()
66   {
67     return OrbRestricted.Singleton.create_interface_tc(id(), "Policy");
68   }
69 
70   /**
71    * Insert the Policy into the given Any.
72    *
73    * @param any the Any to insert into.
74    * @param that the Policy to insert.
75    */
insert(Any any, Policy that)76   public static void insert(Any any, Policy that)
77   {
78     any.insert_Streamable(new PolicyHolder(that));
79   }
80 
81   /**
82    * Extract the Policy from given Any.
83    *
84    * @throws BAD_OPERATION if the passed Any does not contain Policy.
85    */
extract(Any any)86   public static Policy extract(Any any)
87   {
88     try
89       {
90         PolicyHolder h = (PolicyHolder) any.extract_Streamable();
91         return h.value;
92       }
93     catch (ClassCastException ex)
94       {
95         BAD_OPERATION bad = new BAD_OPERATION("Policy expected");
96         bad.minor = Minor.Any;
97         throw bad;
98       }
99   }
100 
101   /**
102    * Get the Policy repository id.
103    *
104    * @return "IDL:omg.org/CORBA/Policy:1.0", always.
105    */
id()106   public static String id()
107   {
108     return "IDL:omg.org/CORBA/Policy:1.0";
109   }
110 
111   /**
112    * Cast the passed object into the Policy. If the
113    * object has a different java type, create an instance
114    * of the _PolicyStub, using the same delegate, as for
115    * the passed parameter. Hence, unlike java type cast,
116    * this method may return a different object, than has been passed.
117    *
118    * @param obj the object to narrow.
119    * @return narrowed instance.
120    * @throws BAD_PARAM if the passed object is not a Policy.
121    */
narrow(org.omg.CORBA.Object obj)122   public static Policy narrow(org.omg.CORBA.Object obj)
123   {
124     if (obj == null)
125       return null;
126     else if (obj instanceof Policy)
127       return (Policy) obj;
128     else
129       {
130         // Check for the policy id cannot be performed because
131         // this helper must read various subclasses of the Policy,
132         // and the IOR profile currently supports only one id.
133 
134         Delegate delegate = ((ObjectImpl) obj)._get_delegate();
135         return new _PolicyStub(delegate);
136       }
137   }
138 
139   /**
140    * Read the object from the CDR intput stream (IOR profile expected).
141    *
142    * @param input a org.omg.CORBA.portable stream to read from.
143    */
read(InputStream input)144   public static Policy read(InputStream input)
145   {
146     return narrow(input.read_Object());
147   }
148 
149   /**
150    * Write the object to the CDR output stream (as IOR profile).
151    *
152    * @param output a org.omg.CORBA.portable stream stream to write into.
153    * @param value a value to write.
154    */
write(OutputStream output, Policy value)155   public static void write(OutputStream output, Policy value)
156   {
157     output.write_Object(value);
158   }
159 }
160