OldJIDLObjectKeyTemplate.java revision 608:7e06bf1dcb09 
1/*
2 * Copyright (c) 2000, 2003, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.  Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26package com.sun.corba.se.impl.ior;
27
28import org.omg.CORBA.OctetSeqHolder ;
29
30import org.omg.CORBA_2_3.portable.InputStream ;
31import org.omg.CORBA_2_3.portable.OutputStream ;
32
33import com.sun.corba.se.spi.ior.ObjectId ;
34import com.sun.corba.se.spi.ior.ObjectKeyFactory ;
35
36import com.sun.corba.se.spi.orb.ORB ;
37import com.sun.corba.se.spi.orb.ORBVersion ;
38import com.sun.corba.se.spi.orb.ORBVersionFactory ;
39
40import com.sun.corba.se.impl.ior.ObjectKeyFactoryImpl ;
41
42import com.sun.corba.se.impl.encoding.CDRInputStream ;
43
44/**
45 * Handles object keys created by JDK ORBs from before JDK 1.4.0.
46 */
47public final class OldJIDLObjectKeyTemplate extends OldObjectKeyTemplateBase
48{
49    /**
50     * JDK 1.3.1 FCS did not include a version byte at the end of
51     * its object keys.  JDK 1.3.1_01 included the byte with the
52     * value 1.  Anything below 1 is considered an invalid value.
53     */
54    public static final byte NULL_PATCH_VERSION = 0;
55
56    byte patchVersion = OldJIDLObjectKeyTemplate.NULL_PATCH_VERSION;
57
58    public OldJIDLObjectKeyTemplate( ORB orb, int magic, int scid,
59        InputStream is, OctetSeqHolder osh )
60    {
61        this( orb, magic, scid, is );
62
63        osh.value = readObjectKey( is ) ;
64
65        /**
66         * Beginning with JDK 1.3.1_01, a byte was placed at the end of
67         * the object key with a value indicating the patch version.
68         * JDK 1.3.1_01 had the value 1.  If other patches are necessary
69         * which involve ORB versioning changes, they should increment
70         * the patch version.
71         *
72         * Note that if we see a value greater than 1 in this code, we
73         * will treat it as if we're talking to the most recent ORB version.
74         *
75         * WARNING: This code is sensitive to changes in CDRInputStream
76         * getPosition.  It assumes that the CDRInputStream is an
77         * encapsulation whose position can be compared to the object
78         * key array length.
79         */
80        if (magic == ObjectKeyFactoryImpl.JAVAMAGIC_NEW &&
81            osh.value.length > ((CDRInputStream)is).getPosition()) {
82
83            patchVersion = is.read_octet();
84
85            if (patchVersion == ObjectKeyFactoryImpl.JDK1_3_1_01_PATCH_LEVEL)
86                setORBVersion(ORBVersionFactory.getJDK1_3_1_01());
87            else if (patchVersion > ObjectKeyFactoryImpl.JDK1_3_1_01_PATCH_LEVEL)
88                setORBVersion(ORBVersionFactory.getORBVersion());
89            else
90                throw wrapper.invalidJdk131PatchLevel( new Integer( patchVersion ) ) ;
91        }
92    }
93
94
95    public OldJIDLObjectKeyTemplate( ORB orb, int magic, int scid, int serverid)
96    {
97        super( orb, magic, scid, serverid, JIDL_ORB_ID, JIDL_OAID ) ;
98    }
99
100    public OldJIDLObjectKeyTemplate(ORB orb, int magic, int scid, InputStream is)
101    {
102        this( orb, magic, scid, is.read_long() ) ;
103    }
104
105    protected void writeTemplate( OutputStream os )
106    {
107        os.write_long( getMagic() ) ;
108        os.write_long( getSubcontractId() ) ;
109        os.write_long( getServerId() ) ;
110    }
111
112    public void write(ObjectId objectId, OutputStream os)
113    {
114        super.write(objectId, os);
115
116        if (patchVersion != OldJIDLObjectKeyTemplate.NULL_PATCH_VERSION)
117           os.write_octet( patchVersion ) ;
118    }
119}
120