1 /* IDLTypeHelper.java --
2 Copyright (C) 2005 Free Software Foundation, Inc.
4 This file is part of GNU Classpath.
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)
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.
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
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
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. */
39 package gnu
.CORBA
.CDR
;
41 import gnu
.CORBA
.Minor
;
43 import org
.omg
.CORBA
.MARSHAL
;
44 import org
.omg
.CORBA
.portable
.BoxedValueHelper
;
45 import org
.omg
.CORBA
.portable
.InputStream
;
46 import org
.omg
.CORBA
.portable
.OutputStream
;
48 import java
.io
.Serializable
;
49 import java
.lang
.reflect
.Method
;
50 import java
.lang
.reflect
.Modifier
;
53 * Handles case when the CORBA IDL type with the known helper is wrapped into
56 * @author Audrius Meskauskas, Lithuania (AudriusA@Bioinformatics.org)
58 public class IDLTypeHelper
59 implements BoxedValueHelper
64 protected Class helper
;
67 * Argument values for Helper.id().
69 static final Object
[] ARGS_ID_V
= new Object
[0];
72 * Argument types for Helper.id()).
74 static final Class
[] ARGS_ID
= new Class
[0];
77 * Argument types for Helper.read.
79 static final Class
[] ARGS_READ
= new Class
[] { org
.omg
.CORBA
.portable
.InputStream
.class };
82 * Create an IDLTypeHelper that works via given helper class.
84 public IDLTypeHelper(Class a_helperClass
)
86 helper
= a_helperClass
;
90 * Get the Id, returned by this helper (use reflection).
92 public String
get_id()
96 Method m
= helper
.getMethod("id", ARGS_ID
);
97 return (String
) m
.invoke(null, ARGS_ID_V
);
101 MARSHAL m
= new MARSHAL(msg() + " id()");
102 m
.minor
= Minor
.Boxed
;
109 * Read an instance from the stream.
111 public Serializable
read_value(InputStream input
)
115 Method m
= helper
.getMethod("read", ARGS_READ
);
116 return (Serializable
) m
.invoke(null, new Object
[] { input
});
120 MARSHAL m
= new MARSHAL(msg() + " read(..)");
121 m
.minor
= Minor
.Boxed
;
128 * Write the instance to the stream.
130 public void write_value(OutputStream output
, Serializable value
)
134 Method
[] m
= helper
.getMethods();
136 for (int i
= 0; i
< m
.length
; i
++)
138 if (m
[i
].getName().equals("write")
139 && ((m
[i
].getModifiers() & Modifier
.STATIC
) != 0))
141 Class
[] p
= m
[i
].getParameterTypes();
143 if (p
.length
== 2 && OutputStream
.class.isAssignableFrom(p
[0])
144 && p
[1].isAssignableFrom(value
.getClass()))
146 m
[i
].invoke(null, new Object
[] { output
, value
});
154 MARSHAL m
= new MARSHAL(msg() + " write(..)");
155 m
.minor
= Minor
.Boxed
;
162 * Create the start of message for exceptions.
166 return "Failed calling " + helper
.getName() + " method: ";